Epson Tm U220 2b311x

Confidential

Service manual TM-U220 Series (Type A)

Issued date

,

,

Issued by

English EPSON

404619501 Rev. B

Confidential

TM-U220 Type A Service Manual CONFIDENTIALITY AGREEMENT

BY USING THIS DOCUMENT, YOU AGREE TO ABIDE BY THE OF THIS AGREEMENT. PLEASE RETURN THIS DOCUMENT IMMEDIATELY IF YOU DO NOT AGREE TO THESE . ❏

This document contains confidential, proprietary information of Seiko Epson Corporation or its s. You must keep such information confidential. If the is a business entity or organization, you must limit disclosure to those of your employees, agents, and contractors who have a need to know and who are also bound by obligations of confidentiality.

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On the earlier of (a) termination of your relationship with Seiko Epson, or (b) Seiko Epson’s request, you must stop using the confidential information. You must then return or destroy the information, as directed by Seiko Epson.

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If a court, arbitrator, government agency, or the like orders you to disclose any confidential information, you must immediately notify Seiko Epson. You agree to give Seiko Epson reasonable cooperation and assistance in the negotiation.

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You may use confidential information only for the purpose of operating or servicing the products to which the document relates, unless you obtain the prior written consent of Seiko Epson for some other use.

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Seiko Epson warrants that it has the right to disclose the confidential information. SEIKO EPSON MAKES NO OTHER WARRANTIES CONCERNING THE CONFIDENTIAL INFORMATION OR ANY OTHER INFORMATION IN THE DOCUMENT, INCLUDING (WITHOUT LIMITATION) ANY WARRANTY OF TITLE OR NON-INFRINGEMENT. Seiko Epson has no liability for loss or damage arising from or relating to your use of or reliance on the information in the document.

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You may not reproduce, store, or transmit the confidential information in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of Seiko Epson.

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Your obligations under this Agreement are in addition to any other legal obligations. Seiko Epson does not waive any right under this Agreement by failing to exercise it. The laws of Japan apply to this Agreement.

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No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Seiko Epson Corporation.

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The contents of this document are subject to change without notice. Please us for the latest information.

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While every precaution has been taken in the preparation of this document, Seiko Epson Corporation assumes no responsibility for errors or omissions.

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Neither is any liability assumed for damages resulting from the use of the information contained herein.

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Neither Seiko Epson Corporation nor its s shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the U.S.) failure to strictly comply with Seiko Epson Corporation’s operating and maintenance instructions.

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Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of any options or any consumable products other than those designated as Original EPSON Products or EPSON Approved Products by Seiko Epson Corporation.

Cautions

EPSON® and ESC/POS® are ed trademarks of Seiko Epson Corporation

Rev. B

i

Confidential Contents Revision Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv For Safe Repair and Maintenance Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v Key to Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v Safety Precautions on Maintenance/Repair/Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi Modular Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii Aim of the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii Manual Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii Chapter 1 Product Overview Notes on Connecting the Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2 Part Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2 Control (LEDs and Button) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3 Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3 Power Switch and Power Switch Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3 Power Switch Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3 Inserting Roll Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4 Installing or Replacing the Ribbon Cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7 Differences between the TM-U300, TM-U200, and TM-U220 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8 Chapter 2 Repair Guide Repair Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 Outline of Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 Repair Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 Confirming the ’s Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 Confirming the Printer Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2 Service Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5 Chapter 3 Troubleshooting Preparations for Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 Before Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2 Diagnosing Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2 Symptoms and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3 Symptoms when Power is On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3 Symptoms when the All Function Test is Executed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15 Symptoms for other operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20 Test Points on the Main Circuit Board Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21 Resistance Values of Printer Mechanism Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22 Chapter 4 Disassembly and Assembly Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Standard Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Lubrication Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Tool List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Notes for Assembly and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2 Shortest Route for Disassembly of Major Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 Disassembling the TM-U220 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4 Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4 Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5 Disassembling the Mechanism Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6 Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

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Confidential

TM-U220 Type A Service Manual

DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disassembling the Carriage Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disassembling the Rotation Frame Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disassembling the Roll Paper Guide / Roll Paper Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disassembling the Autocutter Unit / Fixed Blade Holder Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disassembly and Assembly Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lubrication Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-7 4-8 4-8 4-9 4-10 4-10 4-11 4-12 4-12 4-13 4-14 4-14 4-15 4-16 4-28

Chapter 5 Adjustment and Setting Setting the Installation Position for the Roll Paper Near-End Detector . . . . . . . . . . . . . . . . . . . . . . . . . Adjusting the Detection Point for the Roll Paper Near-End Detector . . . . . . . . . . . . . . . . . . . . . . . . . . Setting the Paper Roll Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setting the Autocutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Platen Gap Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Carriage Belt Tension Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust Various Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How to Confirm the Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjusting the DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Memory Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Memory Switch Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-7 5-7 5-10 5-12

Chapter 6 Preparation for Shipment Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How to Clean the Cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing Dirt, Paper Chips, and Dust from Inside the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-1 6-1 6-1 6-1 6-2

Appendix Parts List Reference Number List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Rev. B

iii

Confidential Revision Table

iv

Revision

Pages

Description

Rev. A

All pages

Newly authorized.

Rev. B

1-2

Part names added.

1-3

Control (LEDs and buttons) added.

1-4

Inserting roll paper added.

1-8

Installing and replacing the ribbon cassette added.

4-3, 4-4

Illustration was changed.

4-5, 4-16, 4-17

An explanation of the roll paper cover assembly was added.

4-6, 4-7

Cutter rotation plate (1129) added.

4-7

Step 6 added to disassembly.

4-10, 4-11, 4-20

Paper feed roller plate B deleted.

4-11

An explanation of the platen assembly 1 was added.

4-30

An explanation of the lubrication reference was added.

Chapter 6

Inserting roll paper and installing or replacing the ribbon cassette was moved to Chapter 1.

Rev. B

Confidential


For Safe Repair and Maintenance Work Key to Symbols The symbols in this manual are identified by their level of importance, as defined below. Read the following carefully before handling the product.

WARNING: You must follow warnings carefully to avoid serious bodily injury.

CAUTION: Observe cautions to avoid minor injury to yourself, damage to your equipment, or loss of data. Note: Notes have important information and useful tips on the operation of your equipment.

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v

Confidential Safety Precautions on Maintenance/Repair/Inspection

WARNING: ❏ Be sure to use the EPSON-supplied fuse on the circuit board. Use of another fuse may result in fire. ❏ Remove the power cord and all other cables from this product before disassembly or reassembly to prevent electrical shock. ❏ To prevent the possibility of electrical shock, do not perform maintenance, repair, or inspection during a thunderstorm. ❏ Shut down your equipment immediately if it produces smoke, a strange odor, or unusual noise. Continued use may lead to fire or electric shock. Immediately unplug the equipment. ❏ Only disassemble this product as described in this manual. Do not make modifications to the unit. Tampering with this product may result in injury, fire, or electric shock. ❏ Be sure to use the specified power source. Connection to an improper power source may cause fire or shock. ❏ Never insert or disconnect the power plug with wet hands. Doing so may result in severe shock.

CAUTION: ❏ Parts on the circuit board may become hot during operation. Therefore, wait approximately 10 minutes after turning the power off before touching them. ❏ To avoid injury, take care not to insert fingers or any part of the hand in the paper roll opening where the manual cutter is installed. ❏ Do not open the paper roll cover without taking the necessary precautions, as this can result in injury from the autocutter fixed blade.

Modular Connectors Use the modular connectors specifically designed for the cash drawer and customer display for this product. Do not connect these connectors to an ordinary telephone line.

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About this Manual Aim of the Manual This manual was created to provide the information on printer maintenance and repair required by technicians who handle this work.

Manual Content The manual is made up of the following sections Chapter 1

Product Overview

Provides an overview of the product.

Chapter 2

Repair Guide

Describes the instructions to complete repair of the product.

Chapter 3

Troubleshooting

Provides information on troubleshooting.

Chapter 4

Disassembly and Assembly

Describes disassembly and assembly procedures. Also, shows exploded diagrams and lubrication point diagrams for this product.

Chapter 5

Adjustments and Settings

Describes adjusting and settings procedures.

Chapter 6

Preparation for shipment

Describes preparation for transport. Also provides information on maintenance, inspection, and cleaning.

Appendix

Parts List

Provides a parts list. Also describes screw types.

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Chapter 1

Product Overview The TM-U220 is a serial impact dot-matrix printer for POS systems that can print on roll paper of various widths. This manual describes the TM-U220 Type A, which has a take-up shaft for journal paper. The following model types are available for the TM-U220. Type A

Type D

Type B

TM-U220 external views

TM-U220 Model Comparison Type A

Type B

Type D

Two-color printing

Yes

Yes

Yes

Autocutter

Yes

Yes

No

Take-up device

Yes

No

No

Paper width

76 / 69.5 / 57.5 mm {3" / 2.74" / 2.26"}

76 / 69.5 / 57.5 mm {3" / 2.74" / 2.26"}

76 / 69.5 / 57.5 mm {3" / 2.74" / 2.26"}

Interface (supplied with printer)*

Serial or parallel

Serial or parallel

Serial or parallel

Characters ed

Alphanumeric (ANK) or multilingual**



Note: * Other compatible interfaces, such as USB and Ethernet, are available from the dealer. ** Multilingual means that the printer can print any one of the following: Japanese Kanji, Simplified Chinese, Traditional Chinese, Thai characters, or Korean characters.

Notes on Connecting the Power Supply Unit Be sure to use the correct power supply unit, as listed in the table below. TM-U220 alphanumeric model

TM-U220 multilingual model

1. AC adapter C (packed with the alphanumeric model) 2. PS-180 (option)

PS-180 (packed with the multilingual model)

Note: The AC adapter C, which is packed with the alphanumeric model, cannot be used with the multilingual model. Be sure to use the PS-180 with the multilingual model. If the AC adapter C power supply is connected to the multilingual model by mistake, the printer may not operate correctly. For example, printing may stop before all lines are printed, or the printer might print the same line repeatedly.

Rev. B

Product Overview 1-1

Confidential Configurations This TM-U220 is configured by combining features from the list below. Table 1-1 Configurations Features

Selection

Description

Interface types

UB-S01 (RS-232) UB-P02II (IEEE 1284 (bidirectional parallel)) EPSON UB universal interface board options

Use an EPSON-approved interface board

Paper width selections

76, 69.5, or 57.5 mm {3", 2.74", or 2.26"}

Be sure to change the paper guide spacer if paper of a different width is used. Then, set the customized value in printer memory for the correct paper width. For details about how to set the paper width, see Chapter 6, “Installation.”

Power supply unit types

Exclusive external power supply for the alphanumeric model: AC Adapter C (North America only) (pre-packaged). External power supply unit for the multilingual model: PS-180

Do not use the AC Adapter C with the multilingual model.

Installation positions

Horizontally (default) Vertically by use of the optional WH-10 wall-hanging bracket

Note: Selections in the table above may be added to or changed in the future. dpi: dots per 25.4 mm (dots per inch)

Part Names The figure below shows part names for the TM-U220.

Roll paper cover Ribbon cassette cover

Power switch Control

1-2 Product Overview

Rev. B

Confidential


Control (LEDs and Button)

LEDs POWER On when power is on. ERROR On when printer is offline. Off when printer is online. Flashes during an error. PAPER OUT On when paper is out or nearly out. Flashes during self-test

Button FEED This button feeds roll paper or starts a self-test. Note: Paper cannot be fed by using this button when a paper out is detected.

Power Switch and Power Switch Cover The power switch is on the front of the printer. Press this switch to turn on the printer.

Power Switch Cover This cover prevents the power from being turned off accidentally during printing. If you need to turn the power on or off while the cover is attached, you can insert a small screwdriver or similar tool into one of the holes in the cover to flip the switch.

WARNING: If an accident occurs while the power switch cover is attached, immediately unplug the power supply cable to avoid fire.

Rev. B


Confidential Inserting Roll Paper

CAUTION: Be sure to use only roll paper that meets the specifications. Be sure not to touch the manual cutter. Otherwise, you may cut your fingers. 1. Using scissors, cut the leading edge of the roll paper.

2. Turn on the printer and open the roll paper cover by using the tab.

3. Open the unit by using the unit open lever, as shown below.

Unit open lever


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Confidential


4. Insert the roll paper.

Note: Note the direction that the paper comes off the roll, as shown above. When using two-ply paper, be sure that the top and bottom sheets are aligned at the paper exit. Do not allow paper to be loaded as shown below.

5. If you are not using the take-up flange, pull out a small amount of roll paper and close the roll paper cover. Then, tear off the paper with the manual cutter. You can skip steps 6 through 11. 6. When using 2-ply roll paper, pull out the roll paper to the bottom front of the printer, as shown below.

Rev. B


Confidential 7. Close the unit, as shown below.

8. Insert the end of the bottom layer of paper (journal paper) into the paper take-up flange, as shown below.

Take-up flange

9. Insert the paper take-up flange into the printer. Be sure that the paper is aligned with the flange, as shown.

10. Feed the paper with the FEED button so that the paper is taken up by the flange. 11. Close the roll paper cover and tear off the roll paper with the manual cutter, as shown below.

Note: Do not open the roll paper cover during printing or paper feeding. When using the printer, be sure to cut the roll paper with the manual cutter after paper feeding is complete.


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Installing or Replacing the Ribbon Cassette

CAUTION: EPSON recommends the use of only genuine EPSON ribbon cassettes. Ribbon cassettes not manufactured by EPSON may cause damage to your printer that is not covered by EPSON’s warranties. To install the ribbon cassette for the first time or to replace a used ribbon, follow the steps below. 1. Unpack the ribbon cassette and turn the knob in the direction shown to take up any slack.

Knob

2. Open the printer’s ribbon cassette cover using the tabs on each side of the cover.

3. Remove the old ribbon, if there is one. 4. Insert cassette as shown below. Put ribbon between print head and platen. Push cassette down until it clicks. Note: Make sure the ribbon is installed between the print head and the platen without wrinkles or creases.

5. Again, turn the cassette knob 2 or 3 times to take up slack. 6. Close the printer’s ribbon cassette cover.

Rev. B


Confidential Differences between the TM-U300, TM-U200, and TM-U220 Specification

TM-U300 (Type A, B, C, D)

TM-U200 (Type A, B, D)

TM-U220 (Type A, B, D)

Print speed

3.5 lines/second (at 40 columns, 16 i)



Paper feed speed

25 lines/second

25 lines/second

30 lines/ second

Character tables

Alphanumeric 95, international 32, extended 126 x 7



Paper loading

Paper roll holding shaft

Semi automatic loading

Drop in loading

Paper near-end sensor

Yes

Option

Configured option

Cover open detector

Yes

No

Yes

Paper width

76 mm

76 mm

76 mm, 69.5 mm, or 57.5 (B and D only)

Number of copies

Original + 2 copies (at 77°F) Original + 1 copy (at all temperatures)

A and B: original + 1 copy; D: original + 2 copies

All models: original + 1 copy

Autocutter (Type A, B only)

Full cut or partial cut set by command

Partial cut default; full cut set by command

Partial/full cut set by command

Auto take-up unit

Type A, C

Type A

Type A

Print area

76 mm paper: Width: Left margin: Right margin:

63.34 mm (200 dots x 400 positions) 6 mm 6.5 mm (approx.)

76 mm paper: Width: Left margin: Right margin:

63.34 mm (200 dots x 400 positions) 5.9 mm 6.76 mm

76 mm paper: Width: Left margin: Right margin: 69.5 mm paper: Width: Left margin: Right margin: 57.5 mm paper: Width: Left margin: Right margin:


57 mm (180 dots x 360 positions) 6.7 mm 5.8 mm


Space from autocut to print start: Space from manual cut to print start:

36 mm

27 mm

27 mm

Type A, B: 26 mm; Type C, D: 28 mm

20.2 mm

Type D: 22.1 mm; Type A, B: 34.9 mm

Receive buffer

Alphanumeric: Multilingual:

1KB/40 bytes 512 bytes/40 bytes


1KB/40 bytes 512 bytes/40 bytes


4KB/40 bytes 4KB/40 bytes

NV bit image memory


none none


none none


128KB 128KB

NV memory


none none


none none


8KB 8KB

Power supply

PA-6509 or PB-6509 (North America)

PB-6509 (North America)

AC Adapter C — Low-cost universal power supply for impact dot matrix printer supplied in box.

Dimensions (W x D x H)

Type A:

Type A:

Type A:

Type B: Type C: Type D:

170 x 288 x 183 mm {6.7 x 11.3 x 7.2"} 170 x 253 x 148 mm {6.7 x 10 x 5.8"} 158 x 295 x 145 mm {6.2 x 11.6 x 5.7"} 158 x 235 x 125 mm {6.2 x 9.3 x 4.9"}

Type B: Type D:

160 x 295 x 160 mm {6.3 x 11.6 x 6.3"} 160 x 248 x 150 mm {6.3 x 9.8 x 5.9"} 160 x 248 x 133 mm {6.3 x 9.8 x 5.2"}

Type B: Type D:

160 x 286 x 157.5 mm {6.3 x 11.3 x 6.2"} 160 x 248 x 138.5 mm {6.3 x 9.8 x 5.5"} 160 x 248 x 138.5 mm {6.3 x 9.8 x 5.5"}

Installation

Horizontally with a 15° slant, maximum. Type B, D: Vertically on wall using WH-10 bracket.

Horizontally with a 15° slant, maximum.

Horizontally with a 15° slant, maximum. Optional IR tray also can be used. Type B, D: Vertically on wall using WH-10 bracket.

Buzzer

None

None

Printer also can be used with annunciator interface.


Rev. B

Confidential


Chapter 2

Repair Guide This chapter gives instructions to complete repair of the product. Follow the process in this section for repair.

Repair Process Outline of Repair Check each item before and after repair, as shown in the following flowchart. This chapter explains the operations to confirm a “normal state” of operation of items in the flowchart. If an item is in a state other than the “normal state,” follow the instructions in the chapter to troubleshoot based on the symptom.

Repair Flow

Confirm the right status Troubleshooting

If no problem is found, the product is considered to be normal, and can be sent to the ’s environment.

Assembly/disassembly

Adjustment/setting

Confirming the ’s Environment Confirm the printer’s settings by using the service utility.

Confirming the Printer Status Confirm the status of the printer you are repairing. Confirm that the power turns on/off; run the self-test; run all function tests with the service utility; and check other items, following the table below. Perform the appropriate measures for the symptom.

Rev. B

Repair Guide 2-1

Confidential Printer Status Checks Operation

Normal printer operation

When a problem occurs

Power on.

Power LED light comes on. Mechanical initializing operation occurs. ERROR LED light is off.

POWER LED does not light. (See page 3-3.) ERROR LED light. (See page 3-3.) ERROR LED flashes. (See page 3-4.) PAPER OUT LED lights. (See page 3-6.)

Run the self-test. *Refer to page 2-2 for operation.

POWER LED light comes on. Prints the printer status. (See page 2-3.) Prints the roll pattern after the FEED button is pressed. (See page 2-3.) Mechanical initialization occurs. ERROR LED light is off.

Self-test cannot be performed. (See page 3-6.) Printing cannot be performed. (See page 3-7.) The print result is not normal. (See page 3-12.) A paper jam occurs. (See page 3-14.) PAPER OUT LED lights. (See page 3-6.)

Run the “all function test” with the service utility. *Refer to page 2-7 for operation.

Reads printer status. Prints the RECEIPT sheet. (See page 2-9.) Prints the STATUS sheet after confirming the sensor operation. (See page 2-10.) Prints the REPORT sheet. (See page 2-12.)

The communication test fails. (See page 3-16.) The print result is not normal. (See page 3-12.) Drawer kick is not performed. (See page 3-17.) The sensor does not work. (See page 3-18.)

Perform other checks of operation.

Normal opening/closing of roll paper cover. Normal opening/closing of ribbon cover. The case is dirty.

Parts do not move smoothly. (See page 3-20.) The case is dirty. (See page 3-20.)

Once you have confirmed the printer status using the table above, you can perform the necessary functions below. ❏ Identification of defective parts. (See Chapter 3.) ❏ Preparation for replacing parts. (Read and follow the precautions and notes at the beginning of Chapter 4.) ❏ Parts replacement, assembly, and disassembly. (See Chapter 4.) ❏ Adjustment and setting. (See Chapter 5.) ❏ Preparation for shipment. (See the Chapter 6 before sending the printer back to the customer.)

Self-test Operation The self-test can be run using the service utility or by operating the control . See page 2-12 for information about control operation. Before running the self-test, make sure the roll paper and ribbon are installed correctly in the printer. Then, turn power off. To run the self-test, turn the power back on while holding down the FEED button. The first page of the self-test printout should look like the example in the table below. To print the second part of the self-test, press FEED again.

2-2 Repair Guide

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Printer Status Print Normal printout result

➀

➁

Explanation

➀ Version information Main program version Boot program version ➁ Interface classification Interface information ➂ Receive buffer capacity *1) ➃ Busy release conditions for receive buffer full *2) ➄ Busy condition *3) ➅ Resident character *4)

➂

7 Paper roll width *5) ➇ Dot spacing between characters *6) 9 Characters per line *7) Autocutter unit installed/not installed *8)

➃

Note: ➄

➅

7

➇

*1) Differs depending on DIP SW1-2. *2) Differs depending on MSW 8-7. Prints only when the receive buffer capacity is 4KB. (Does not print when the receive buffer capacity is 40 bytes.) *3) Differs depending on DIP SW1-8. *4) Performs a multilingual CG judgment when printing resident characters. *5) Differs depending on the paper roll width set with the memory switch (customized value). *6) Differs depending on DIP SW2-1. *7) Differs depending on the paper roll width and dots between characters. *8) Differs depending on DIP SW2-2.

9

Rev. B

Repair Guide 2-3

Confidential Roll Pattern Normal print result

Explanation

Black (6 lines)

Red (6 lines)

Red (6 lines)

Paper feeds 2 lines. Paper is fed to a position where the can see the ending message at left.

2-4 Repair Guide

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Service Utility Using the service utility, you can confirm the printer status and change settings. The following section explains the operation for confirming the printer status. * To use the repair functions in the service utility, a is required. Refer to the manual supplied with the service utility for the . Start up of the service utility When you start the service utility, the following communication conditions dialog box appears.

1. Select the model (TM-U220). 2. Select the type of I/F.

3. Select the parameters to communicate with the printer. 4. Test the communication.

1. Model selection: Select the TM-U220 (Type A model printer). 2. Communication condition selection: Select the I/F used with the printer. You can confirm the communication conditions set for the printer by running the self-test. Refer to the self-test section for details. 3. Communication test: 4. Confirm the communication status with the connected printer. Normally, the following message appears. .

When the communication conditions are set correctly, the following functions are available. ❏ Self-test mode 1: Outputs the same results as the self-test printout of status. ❏ Self-test mode 2: Outputs the same results as the self-test printout of the roll pattern.

Rev. B

Repair Guide 2-5

Confidential ❏ Real-time status: Lets you confirm sensor operations, such as cover open/close, in real time. ❏ Printer status: Lets you read and set the printer values collectively. Also, you can save the settings to a file, read the set values in the file, and the display the default state. Refer to the chapter on adjustment settings.

Printer sequence selection When you click the Next button at the bottom of the communication conditions dialog box, the printer sequence selection screen appears.

1. Select a printer sequence to execute.

2. Click Next to proceed. ❏ Test printing:

This outputs a test pattern to confirm printer status. Follow the screen instructions to operate. ❏ Confirmation of the drawer operation:

You can confirm the drawer open function and the change in the open/close status. Follow the screen instructions to operate. ❏ Setting for notification of power on:

You can enable or disable the notification function for power on. ❏ Firmware update:

You can update the firmware. Follow the screen instructions to operate. ❏ Main circuit board replacement wizard/backup wizard/restore wizard:

You can back up the data in the main circuit board and restore it in the repaired product. Follow the screen instructions to operate.

2-6 Repair Guide

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All Function Test When you select the all function test in the printer sequence selection screen and click Next, the all function test screen appears.

1. Select the test elements.

2. Click to start the All Function Test.

Select the test elements and click the Start button to start the all function test. Using this test, you can check the following functions for the printer. ❏ Communication function:

You can confirm that communication with the printer is enabled/disabled. ❏ Setting function:

Reads and prints on the status sheet the status settings for EPSON NV memory, memory switches, communication conditions, and customized value. ❏ Receipt print function:

Prints patterns to confirm print operations and print quality. ❏ Roll paper cut function:

The Type A model autocutter cuts roll paper after each printing on the roll. ❏ Drawer open/close function:

Runs a test of drawer open/close operation while printing the receipt pattern. Be sure to connect the drawer kick to the printer before executing the all function test. ❏ Sensor function:

Confirms the operation of sensors controlling and detecting printer operations. The checking method for the sensor indicated with the arrow is displayed on the screen. Operate the printer following the instructions on the screen.

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Repair Guide 2-7

Confidential

1. Indicate the sensor to test.

2. Follow the message to operate the printer. 3. Click If you want to skip the test.

When the sensor detects the printer operation correctly, OK is displayed. When the sensor is not installed (depending on the printer model), you can skip with the Skip button. Test results are OK when the tests confirm the normal operation of the sensors.

2-8 Repair Guide

Rev. B

Confidential


Output result When the printer operates normally, the following sheet is printed. Refer to the chapters on “Troubleshooting” and “Adjustment and Setting” when print results differ. Receipt Print Normal print result ➀ ➁ ➂ ➃ ➄ ➅

Explanation ➀ Prints execution date. ➁ Prints execution time. ➂ Prints “EPSON/” ➃ Prints “TM-U220.” ➄ Prints product serial number. *1) ➅ Prints graphic pattern. Checks for missing dots. (See“Dots are missing continuously” on page 3-12.) ➆ Prints ANK characters. *2) ➇ Performs full cut. *3)

Note: ➆

*1) When the serial number is not ed on the product itself, “NG” is printed. *2) When using the 2-color ribbon, prints in 2 colors. *3) When autocutter setting is partial cut, full cut is not performed.

➇

Rev. B

Repair Guide 2-9

Confidential Status Print Normal print result ➀ ➁ ➂ ➃ ➄

➅

Explanation ➀ Prints execution date. ➁ Prints execution time. ➂ Prints “EPSON.” ➃ Prints “TM-U220.” ➄ Prints product serial number. *1) ➅ Prints setting status of memory switches. *2) ➆ Prints setting status of customize value. *3) ➇ Performs partial cut. *4)

Note:

➆

*1) When the serial number is not ed on the product itself, “NG” is printed. *2, 3) When the default setting is changed, “*” is printed before the memory switch number. *4) When autocutter setting is full cut, partial cut is not performed.

➇

2-10 Repair Guide

Rev. B

Confidential Normal print result ➀

TM-U220 Type A Service Manual Explanation ➀ Prints program version. Main program version is printed. Boot program version is printed. Original program version is printed. ➁ Prints ”power on status” set with printer sequence. ➂ Displays size of main ROM. (Differs depending on specifications.) ➃ Displays size of extended ROM. (Differs depending on specifications.)

➁

➂

➄ Prints defined bit image data in NV memory. *1) ➅ Prints defined data in NV memory. *2) ➆ Prints information on EPSON NV memory. It is changeable with the printer status. *3) Manufacturer name Model name Product serial no. ➇ Prints defined data for the space page. ➈ Prints definition of command default values.

Note: *1, 2) Data defined by a must be backed up and restored.

➃

➄

➅

➆

➇

➈

Rev. B

Repair Guide 2-11

Confidential Report Print Normal print result

Explanation ➀ Prints execution date. ➁ Prints execution time. ➂ Prints “EPSON.” ➃ Prints “TM-U220.” ➄ Prints the serial number for the product. ➅ Prints the execution status of all function test. ➆ Prints test results of sensor operation. *1)

➀ ➁ ➂ ➃ ➄

➅

Note: *1) When an operation such as cover open sensor check is skipped using the button on the screen, the report shows a problem for that item. (Refer to “Cannot one of the tests for a sensor” on page 3-18.)

➆

Running a Self-test The steps below describe how to run a self-test by operating the control . 1. Make sure the printer is turned off and the roll paper cover is closed properly. 2. While holding down the FEED button, turn on the printer using the switch on the front of the printer. The self-test prints the printer settings and then prints the following, cuts the paper, and pauses. (The PAPER OUT light flashes.) If you want to continue SELF-TEST printing, Please press the FEED button. 3. Press the FEED button to continue printing. The printer prints a pattern using the built-in character set. 4. The self test automatically ends and cuts the paper after printing the following: *** completed *** 5. The printer is ready to receive data as soon as it completes the self test. Note: If you want to pause the self-test manually, press the FEED button. Press the FEED button again to continue the self-test.

2-12 Repair Guide

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Chapter 3

Troubleshooting Preparations for Troubleshooting Before troubleshooting, check and, if necessary, correct the following points. Paper is jammed inside the printer

CAUTION: Be sure not to touch the manual cutter. Otherwise, you may cut your fingers. 1. Turn the power off. 2. Open the roll paper cover using the tab, as shown in the below illustration. Roll paper cover

Tab

3. Remove the jammed paper. Note: If you turn the power off accidentally during printing, the cutter blade may stop in the paper feed path. So, paper may not be fed normally at first when you turn the power on again. If the cutter blade does not return to the normal position, the autocutter unit may be jammed. If so, follow the procedure described below to repair the autocutter unit. 1. Power off the unit and open the roll paper cover. 2. Remove the jammed paper.

Rev. B

Troubleshooting 3-1

Confidential 3. Return the cutter blade to the normal position by rotating the autocutter knob in the direction of the arrow. When the blade is returned to the normal position, the lever moves to the center of the hole in the autocutter frame. Hole

Lever

Autocutter unit Knob

4. Lift up the roll paper cover. Note: ❏ Besides a paper jam, a foreign object, such as a push pin, can cause the autocutter to lock up. In this case, follow the same procedure described above to return the cutter to its normal position.

Before Servicing Pages iv to v at the beginning of this manual provide precautions you should observe to perform work safely and supply the necessary information to service this product safely. Always read that information before starting your work.

Diagnosing Failures Use one of the following methods to identify the area where a failure occurred. ❏ See the tables in the section "Symptoms and Solutions" for diagnosing failures by the symptom of the problem. ❏ See "Test Points on the Main Circuit Board Unit" for failures on the main circuit board unit.

3-2 Troubleshooting

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Symptoms and Solutions Symptoms when Power is On POWER LED does not light Table 3-1 POWER LED not Lit Probable part/probable cause

Checkpoints

Action to correct the problem

Check the connections. Make sure the connector is plugged in.

Plug in the connector. Completed if the POWER LED lights.

Check the output voltage. Make sure 24 V is coming out.

Replace power unit. Completed if the POWER LED lights.

Cable connector (1098)

Check the connectors. Make sure the ones below are plugged in: ❑ Connector (CN10) on the main circuit board unit (201) ❑ Connector (CNC3) on the sub circuit board unit (123)

Plug in the connectors. Completed if the POWER LED lights.

Sub circuit board unit (123)

Check the sub circuit board unit for damage. Make sure it looks normal.

Replace the sub circuit board unit (123). Completed if the POWER LED lights.

Check the resistance value of fuses F1 and F4. Make sure neither fuse is blown.

If the circuit board has no damage, such as burns, replace fuse F1 or F4. Completed if the POWER LED lights. If the fuse blows when power is turned on, unplug all connectors from the mechanism assembly (120) and check again. If the POWER LED does not light and the fuse is blown, replace the main circuit board unit.

External power unit

Main circuit board unit (201) (Refer to page 3-21.)

Check the operation of SW1. Check the power voltage. Make sure the power voltage has proper voltage rating.

Replace the main circuit board unit (201). Completed if operation is normal.

ERROR LED lights Table 3-2 ERROR LED On Probable part/probable cause

Checkpoints


Roll paper cover assembly (119)

Check the roll paper cover assembly. Make sure the roll paper cover is closed.

Close the roll paper cover assembly. Completed if the ERROR LED turns off.

Paper-end state

Check the roll paper.

Load the roll paper properly. Completed if the ERROR LED turns off.

Rev. B

Troubleshooting 3-3

Confidential ERROR LED flashes Table 3-3 ERROR LED Flashes Probable part/probable cause

Checkpoints


Home position detection error

Check for jammed paper around the carriage. Make sure there is no paper jam.

Remove any jammed paper. Completed if operation is normal.

Check the tension of the carriage belt (507). Make sure the carriage belt has appropriate tension.

Adjust carriage belt tension (Refer to page 5-6). Completed if operation is normal.

Check operation of the parts around the carriage by moving the carriage from side to side. Make sure the belt drive pulley (505) rotates by moving the carriage sub assembly (1025) from side to side.

Reinstall the carriage belt (507) into the carriage sub assembly (1025). Completed if operation is normal.

Check the resistance value of the carriage motor sub assembly (1034). Make sure it is 7.2 Ω or less.

Replace the carriage motor sub assembly (1034). Completed if operation is normal.

Check the operation of the HP board assembly (518). Make sure the signal changes when you block the sensor.

Replace the HP board assembly (518). Completed if operation is normal.

Check the connection of main circuit board unit (201) connectors. Make sure they are plugged in securely. CN7: carriage motor sub assembly (1034) CN4: HP board assembly (518)

Plug in the connectors securely. Completed if operation is normal.

Check if the parts on the main circuit board unit (201) have any damage. Make sure connector CN7 and U8 look normal.


R/W error in memory

Check for repeatability. Make sure operation is normal by rebooting.


High-voltage error

Check the DC power voltage on the main circuit board unit (201). Make sure the power voltage has the proper voltage rating. (Refer to page 3-21.)


Check the DC power voltage on the main circuit board unit (201). Make sure the power voltage has proper voltage rating. (Refer to page 3-21.)


Low-voltage error

3-4 Troubleshooting

Rev. B

Confidential


Table 3-3 ERROR LED Flashes Probable part/probable cause

Checkpoints


U execution error

Check the connection of the I/F circuit board unit (122). Make sure the connector is plugged into the main circuit board unit (201).

Connect the I/F circuit board unit (122). Completed if operation is normal.

Check parts on the I/F circuit board unit (122) for damage. Make sure the I/F circuit board unit appears normal.


Check main circuit board unit (201) parts for damage. Make sure the main circuit board unit (201) looks normal.


Check the print head temperature. Make sure it is not too high.

Wait for the print head temperature to drop. Completed if operation is normal.

Check connection of the head FFC (521). Make sure it is plugged into the print head unit (503) and connector (CN9) on the main circuit board unit (201).

Connect the head FFC (521). Completed if operation is normal.

Check the continuity of the print head unit (503). Make sure wires are not broken or shorted out.

Connect the print head unit (503). Completed if operation is normal.

Check if main circuit board unit (201) parts have any damage. Make sure the main circuit board unit (201) looks normal.


Check the setting of DIP SW2-6. OFF: Initial state ON: Rewriting flash memory.

Switch DIP SW2-6 on the main circuit board unit (201) to OFF. Completed if operation is normal. If operation is not normal, rewrite the firmware. Completed if operation is normal.

Head high-temperature detection circuit error

The ERROR LED flashes 3 or 6 times and then does not operate all.

Rev. B

Troubleshooting 3-5

Confidential PAPER OUT LED lights Table 3-4 PAPER OUT LED is Lit Probable part/probable cause

Checkpoints


Roll paper

Check the roll paper. Make sure it is loaded correctly. Make sure enough paper is left.

Replace the roll paper. Completed if the PAPER OUT LED turns off.

Paper end assembly (514)

Check operation of the paper end assembly (514). Make sure the continuity changes when you operate the switch.

Replace the paper end assembly (514). Completed if the PAPER OUT LED turns off.

Near-end sensor

Check operation of the micro switch (1039). Make sure the continuity changes when you operate the switch.

Replace the near-end sensor. Completed if the PAPER OUT LED turns off.

Main circuit board unit (201)

Check the parts for damage. Make sure the following parts look normal. CN6:for lead wires of the near-end sensor CN4:on the HP board assembly


Symptoms when the self-test is run Self-test is not printed Before running the self-test, make sure the roll paper and ribbon are installed correctly in the printer. Then turn power off. To run the self-test, turn the power on while holding down the FEED button. If the test does not print, check the following: ❏ When the POWER LED does not light: Refer to page 3-3. ❏ When the ERROR LED lights: Refer to page 3-3. ❏ When the ERROR LED flashes: Refer to page 3-4.

3-6 Troubleshooting

Rev. B

Confidential


When only the initializing operation is executed Table 3-5 Only the Initializing Operation Occurs Probable part/probable cause Checkpoints


DIP switch setting

For the serial I/F, check the reset function setting for pins # 6 and # 25. If the I/F cable is connected and the reset function is available, the I/F may always be resetting.

Disable the reset function with the DIP switch setting. Completed if operation is normal.


Check the operation of SE2. Make sure pressing the FEED button feeds paper. Make sure the continuity changes when you operate the switch.


The printer does not print The print head operates, but paper is not fed Table 3-6 The Printer Does not Print Probable part/probable cause

Checkpoints


Roll paper is inserted incorrectly

Check the roll paper. Make sure it meets specifications. Make sure it is loaded correctly.

Load roll paper that meets specifications. Completed if operation is normal.

Paper jam

Check the paper path. Make sure there is no paper jam.

Open the roll paper cover assembly and remove any jammed paper. Completed if operation is normal.

Gear does not rotate

Check the gear operation. Make sure the following gears rotate: Paper feed gear (1063) Paper feed middle gear B (510) Paper feed middle gear (509) Paper feed reduction gear 1 (1093) Make sure the paper feed motor sub assembly (1046) shaft rotates with rotation of paper feed reduction gear 2 (1058).

Replace the defective gear. Completed if operation is normal.

Paper hold spring (1014)

Check the mounting state. Make sure it is mounted correctly. (See page 4-18.)

Insert the paper hold spring (1014) correctly. Completed if operation is normal.

Paper hold roller (1015)

Check operation. Make sure it rotates smoothly.

Replace the paper hold roller (1015). Completed if operation is normal.

Check the operation. Make sure the roller rotates smoothly.

Clean, so that the paper guide roller (1045) rotates correctly. Completed if operation is normal.

Check for damage. You should see no damage, such as wear.

Replace the mechanism assembly (120). Completed if operation is normal.

Paper guide roller (1045)

Rev. B

Troubleshooting 3-7

Confidential Table 3-6 The Printer Does not Print Probable part/probable cause

Checkpoints


Plug in the connectors. Completed if operation is normal.

PF (paper feed) lead wire set (1047)

Check the connectors. Make sure they are plugged in securely: Paper feed motor sub assembly (1046) Connector (CN8) on the main circuit board unit (201) Check the wires for breaks and shorts. Make sure no wires are broken or shorted out.

Replace the PF lead wire set (1047). Completed if operation is normal.

Paper feed motor sub assembly (1046)

Check the resistance value. Make sure it is 7.2 Ω or less.

Replace the paper feed motor sub assembly (1046). Completed if operation is normal.


Check if the parts have any damage. Make sure the following parts look normal. Connector (CN8) U8


3-8 Troubleshooting

Rev. B

Confidential


Paper is fed, but characters are not printed Table 3-7 Paper is Fed, but Characters do not Print Probable part/probable cause

Checkpoints


Check the ribbon mounting. Make sure it is installed correctly.

Load the ribbon cassette correctly. Completed if operation is normal.

Check the ribbon. Make sure it is not wrinkled, kinked, or broken.

Replace the ribbon cassette with a new one. Completed if printing is correct.

Head FFC (521)

Check the continuity with a tester. Make sure wires are not broken or shorted out.

Replace the head FFC (521). Completed if printing is correct.

Print head unit (503)

Check the continuity with a tester. Make sure wires are not broken or shorted out.

Replace the print head unit (503). Completed if printing is correct.


Check parts for damage. Make sure the following parts look normal. Connector (CN9) QM22, QM23, QM24

Replace the main circuit board unit (201). Completed if the print is correct.

Ribbon cassette

Error occurs during printing Table 3-8 ERROR during Printing Probable part/probable cause

Checkpoints


Check the connection of the main circuit board unit (201) connector. Make sure the AC lead wire set (1090) is connected.

Plug in the connector. Completed if operation is normal.

Check the operation of the drive gear sub assembly (1072). Make sure it rotates with rotation of the cutter motor sub assembly (117).

Replace the drive gear sub assembly (1072). Completed if operation is normal.

Check the operation of the cutter motor sub assembly (117).

Replace the cutter motor sub assembly (117). Completed if operation is normal.

Check the operation of the micro switch (121). Make sure the continuity changes when you operate the switch.

Replace the micro switch (121). Completed if operation is normal.

Check the AC lead wire set (1090) for breaks and shorts. Make sure wires are not broken or shorted out.

Replace the AC lead wire set (1090). Completed if operation is normal.

Check fuse F3 on the main circuit board unit (201). Make sure it is not blown.

If the circuit board has no damage such as burns, replace fuse F3. Completed if operation is normal. If the fuse blows again in operation of the autocutter, replace the main circuit board unit.

Autocutter (AC) error

Rev. B

Troubleshooting 3-9

Confidential Table 3-8 ERROR during Printing Probable part/probable cause

Head high-temperature detection circuit error

Roll paper cover open error

3-10 Troubleshooting

Checkpoints


Check the parts on the main circuit board unit (201) for damage. Make sure the following parts look normal. Connector (CN2) QM1


Check the print head temperature. Make sure it is not too high.

Wait for the print head temperature to drop. Completed if operation is normal.

Check the error frequency. Make sure it does not occur too often.

Replace the print head unit (503). If the symptom continues, replace the main circuit board unit (201). Completed if operation is normal.

Check the state of the cover when the error occurs. Be sure not to open the roll paper cover during printing.

If MSW 8-8 is OFF, close the roll paper cover again. Completed if operation is normal. If the MSW 8-8 is ON, turn power on again. Completed if operation is normal. If the error occurs when the roll paper cover is not open, refer to “Cannot one of the tests for a sensor” on page 3-18.

Check the error frequency. Make sure it does not occur too often.

Replace the print head unit (503). Completed if operation is normal. If the symptom continues, replace the main circuit board unit (201). Completed if operation is normal.

Rev. B

Confidential


Paper is not cut correctly Table 3-9 Cutter not Working Correctly Probable part/probable cause

Checkpoints


DIP switch setting

Check the setting of DSW 2-2. OFF: Autocutter is disabled. ON: Autocutter is enabled.

Switch DSW 2-2 to ON. Completed if cutting is normal.

Full cut/partial cut setting

Check the full cut and partial cut setting. Make sure the autocutter unit (113) is mounted in the correct position.

Mount the autocutter unit (113) in the correct position. Completed if cutting is normal.

Fixed blade spring (1016)

Check the spring power. Make sure it has enough power to push the fixed blade (513) against the fixed blade holder (1017).

Replace the fixed blade spring (1016). Completed if cutting is normal.

Check the fixed blade (513). Make sure it does not have any nicks.

Replace the fixed blade (513). Completed if cutting is normal.

Check the movable cutter blade on the cutter frame assembly (114). Make sure it does not have any nicks.

Replace the cutter frame assembly (114). Completed if cutting is normal.

Cutter blade

Ribbon feed mechanism does not operate Table 3-10 Ribbon Feed Mechanism not Functioning Correctly Probable part/probable cause

Checkpoints


Check the mounting. Make sure it is installed correctly.

Install the ribbon cassette correctly. Completed if printing is normal.

Check the ribbon cassette itself. Make sure the ribbon is fed by turning the tab.

Replace the ribbon cassette with a new one. Completed if printing is normal.

Ribbon take-up function

Check the take-up operation. Be sure the following parts move with operation of the carriage sub assembly (1025): ❑ Belt drive pulley (505) ❑ Ribbon middle gear (512) ❑ Ribbon drive plate sub assembly (517) ❑ Ribbon take-up gear sub assembly (516)

Replace the defective gear. Completed if the operation is normal.

Adjustment roller shaft holders (506)

Check the platen gap adjustment. 0.45 mm: falls with no weight applied 0.55 mm: does not fall

Adjust the platen gap (refer to page 5-5). Completed if printing is normal.

Ribbon cassette

Rev. B

Troubleshooting 3-11

Confidential Print result is not normal Print is light or irregular Table 3-11 Light or Irregular Print Probable part/probable cause

Checkpoints


Check the ribbon mounting. Make sure it is installed correctly.


Check the ribbon cassette. Make sure the ribbon is fed by turning the tab.

Replace the ribbon cassette with a new one. Completed if printing is normal.

Ribbon take-up function

Check the take-up operation. Be sure the following parts operate with operation of the carriage sub assembly (1025) ❑ Belt drive pulley (505) ❑ Ribbon middle gear (512) ❑ Ribbon drive plate sub assembly (517) ❑ Ribbon take-up gear sub assembly (516)

Replace the defective gear. Completed if the operation is normal.




Ribbon cassette

Print is dark Table 3-12 Dark Print Probable part/probable cause

Checkpoints





Probable part/probable cause

Checkpoints


Head FFC (521)

Check the continuity with a tester. Make sure no wires are broken or shorted out.

Replace the head FFC (521). Completed if printing is normal.

Dots are missing continuously Table 3-13 Missing Dots

Check the continuity with a tester. Make sure no wires are broken or shorted out. Print head unit (503) Check the state of the dot wires. Make sure they are not broken.


Replace the print head unit (503). Completed if printing is normal.

Rev. B

Confidential


Line spacing is irregular Table 3-14 Irregular Line Spacing Probable part/probable cause

Checkpoints



Check the roll paper. Make sure it meets specifications and is loaded correctly.

Load roll paper that meets specifications correctly. Completed if operation is normal.

Paper jam

Check the paper path. Make sure there is no paper jam.

Open the roll paper cover and remove the paper jam. Completed if operation is normal.

Gear does not rotate

Check gear operation. Make sure the following gears rotate with each other. Paper feed gear (1063) Paper feed middle gear B (510) Paper feed middle gear (509) Paper feed reduction gear 1 (1093) Make sure the shaft of platen assembly 3 (522) rotates with the rotation of paper feed reduction gear 2 (1058).

Replace the defective gear. Completed if operation is normal.

Paper hold spring (1014)

Check the spring mounting. Make sure it is mounted correctly. (Refer to page 418)

Insert the paper hold spring (1014) correctly. Completed if operation is normal.



Replace the paper hold roller (1015). Completed if operation is normal.

Paper guide roller (1045)


Clean, so the paper guide roller (1045) rotates correctly. Completed if operation is normal.

Two-color printing is not performed, or colors are mixed Table 3-15 Printing is not Two-color, or Colors are Mixed Probable part/probable cause

Checkpoints


Check the ribbon type. Make sure it is for 2-color printing.

Replace the ribbon cassette with one for 2-color printing. Completed if printing is normal.

Check the mounting. Make sure the ribbon is installed correctly.


Check the mounting of the spring. Make sure the following springs are mounted correctly. Ribbon take-up spring (1088) Ribbon frame spring (1022)

Mount the springs correctly. Completed if printing is normal.

Ribbon cassette

Two-color shift function

Rev. B


Confidential Printed contents are not normal Table 3-16 Abnormal Printing Content Probable part/probable cause

Checkpoints

Action for the problem

Firmware version

Check the version number. (See page 2-1.) Make sure it is the same as the version used by the customer, or the latest version.

Update the firmware. Completed if printing is normal.

Boot version

Check the version number. (See page 2-1.) Make sure it is the same as the version used by the customer, or the latest version.


DIP switch settings

Check the DIP switch settings printed. Make sure the following items are same as the DIP switch settings. (See page 5-7.) Serial Interface (when serial I/F is installed) Receive buffer capacity Receive buffer full release condition Handshaking operation Characters per line (L) Autocutter unit If they are not correct, check the continuity of the DIP switch.

Replace the main circuit board unit (201). Completed if printing is normal.

Check the resident character set. Make sure it is same as the character set used by the customer.


Resident character

Check if this error message is printed: ### ERROR ### If so, the multilingual font is not correct. Please the correct one. Make sure the message above is not printed.

Update the firmware. Completed if printing is normal. If printing is not normal, replace the main circuit board unit (201).

Check the print item corresponding to the paper width. Make sure the entire area of the paper width is printed.

Match the paper width setting to the paper width. Completed if printing is normal


Checkpoints




Load roll paper that meets specifications correctly. Completed if operation is normal.

Fixed blade (513)

Check for defects. Make sure you see no defects, such as deformation.

Replace the fixed blade (513). Completed if operation is normal.

Paper hold rollers (1015)

Check operation. Make sure the 2 rollers rotate smoothly.

Replace the paper hold roller(s) (1015). Completed if operation is normal.

Paper width

Paper jam occurs Table 3-17 Paper Jams


Rev. B

Confidential


Table 3-17 Paper Jams Probable part/probable cause

Checkpoints


Check operation. Make sure the 2 rollers rotate smoothly.

Clean, so that both paper guide rollers (1045) rotate correctly. Completed if operation is normal.

Check for defects. Make sure you see no defects, such as wear.

Replace the mechanism assembly (120). Completed if operation is normal.

Check for defects. Make sure you see no defects, such as deformation.

Replace the roll paper holder plate (508). Completed if operation is normal.


Checkpoints

Action for the problem



Load roll paper that meets specifications correctly. Completed if printing noise is reduced.



Adjust the platen gap. (Refer to page 5-5.) Completed if the printing noise is reduced.

Paper guide rollers (1045)

Roll paper holder plate (508)

Printing is loud Table 3-18 Noisy Printing

Symptoms when the All Function Test is Executed When an error occurs during printing: Refer to page 3-9. When paper is cut incorrectly: Refer to page 3-11.

Rev. B


Confidential Communication test fails Table 3-19 Communication Test Failure Probable part/probable cause

Checkpoints


Communication condition

Check the communication settings. Make sure the settings printed by the self-test are the same as the communication settings shown by the service utility.

Set the correct communication settings. Completed if operation is normal.

Check the I/F cable connection. Make sure the I/F cable is plugged in securely.

Plug in the I/F cable correctly. Completed if operation is normal.

Check the continuity with a tester. Make sure no wires are cut or shorted out. Be sure the cable is wired correctly.

Replace the I/F cable. Completed if operation is normal.

Check the connection. Make sure the connector is plugged in securely.


Check the parts for defects.

Replace the I/F circuit board unit (122). Completed if operation is normal.

Check parts on the main circuit board unit (201) for defects. Make sure connector (CN1) is connected.

Replace the main circuit board unit (201). Completed if operation is normal

I/F cable

I/F circuit board unit (122)


Printing is not normal When print is light or irregular: Refer to page 3-12. When print is dark: Refer to page 3-12. When dots are missing continuously: Refer to page 3-12. When line spacing is irregular: Refer to page 3-13. When two-color printing is not performed, or the colors are mixed: Refer to page 3-13.


Rev. B

Confidential


Printed output is not normal Table 3-20 Abnormal Output is Printed Probable part/probable cause

Checkpoints


Communication setting

When a question mark (?) is printed, check communication settings. Make sure DTR/DSR control is selected by DIP switch or memory switch.

Select DTR/DSR control. Completed if ? is not printed.

I/F cable

When a question mark (?) is printed, check the continuity of the I/F cable with a tester. Make sure DTR/DSR cross.

Replace the I/F cable. Completed if the operation is normal.

Printer information setting

Check the printer information setting. Make sure the following information is printed: Maker name: “EPSON” Printer name: ”TM-U220” Serial No: Serial number on the manufacturer’s plate

Set again, using the printer status function. Completed if printing is normal.

Memory switch setting

Check the memory switch setting. Make sure it is the same as the setting used by customer. If you do not know the customer’s setting, make sure it is in the factory default state. (Refer to page 5-10.)

Set again, using the printer status function. Completed if printing is normal.

Drawer 1 or 2 is not kicked out Table 3-21 Drawer 1 or 2 not Kicked Out Probable part/probable cause

Checkpoints


Drawer kick

Check the connection. Make sure the cable is plugged in securely. Check each leading pin for drawer 1 or drawer 2.

Plug in the connector. Completed if the drawer is kicked out.


Check board parts for defects. Make sure connectors (CNC2 and CNC3) are connected securely.

Replace the sub circuit board unit. Completed if the drawer is kicked out.


Check the parts for defects. the parts below. Connector (CN10) Element (U7)

Replace the main circuit board unit. Completed if the drawer is kicked out.

Rev. B


Confidential Cannot one of the tests for a sensor Cannot the NE (near-end) sensor test Table 3-22 Test for the NE Sensor Fails Probable part/probable cause

Checkpoints


Check connection. Ensure cable is plugged in. Be sure the NE lead wire set (1096) is connected to the connectors below. Micro switch (1039) Connector (CN6) on the main circuit board unit (201)

Plug in the connector. Completed if the test es.

Check the continuity with a tester. Make sure wires are not cut or shorted out. that wires are arranged correctly.

Replace the NE lead wire set. Completed if the test es.

Micro switch (1039)

Check micro switch (1039) operation. Make sure the continuity changes when you operate the switch.

Replace the near-end sensor. Completed if the test es.

NE detector holder (1042) NE detector lever (1043)

Check the operation. Make sure the NE detector lever rotates smoothly.

Replace the NE detector holder or lever. Completed if the test es.


Check the parts for defects. Make sure connectors (CNC2 and CN6) are connected.

Replace the main circuit board unit. Completed if the test es.

NE lead wire set (1096)

Cannot the test for the RE (real end) sensor Table 3-23 Test for the RE Sensor Fails Probable part/probable cause

Checkpoints



HP board assembly (518)

Check the connection. Make sure the cable is plugged in. Make sure the connector on the HP board assembly (518) is connected to connector (CN4) on the main circuit board unit (201). Check the continuity with a tester. Make sure wires are not cut or shorted out. Be sure wiring is arranged correctly.

Replace the HP board assembly (518). Completed if the test es.


Check the continuity of paper end assembly (514) wires with a tester. Make sure wires are not cut or shorted out. Be sure wiring is arranged correctly.

Replace the paper end assembly. Completed if the test es.


Check the parts for defects. Make sure connector (CN4) is connected.



Rev. B

Confidential


Cannot the test for the roil cover Table 3-24 Paper Roll Cover Test Fails Probable part/probable cause

Checkpoints


Memory switch setting

Check the setting of MSW 8-5. If the setting is OFF, status is not sent from the roll cover, but the RE sensor is changed. Confirm if the setting status is ON.

Change the setting of MSW 8-5 to ON. Completed if the test es.

Check the connection. Make sure the cable is plugged in. Make sure the connector on the HP board assembly (518) is connected to connector (CN4) on the main circuit board unit (201).


Check the continuity with a tester. Make sure wires are not cut or shorted out. Be sure wires are arranged correctly.

Replace the HP board assembly (518). Completed if the test es.

Cover open assembly (515)

Check the continuity of the wires for the cover open assembly (515) with a tester. Be sure wires are not cut or shorted out. Be sure wires are arranged correctly.

Replace the cover open assembly. Completed if the test es.





Cannot the test for the paper FEED button Table 3-25 Paper FEED Button Test Fails Probable part/probable cause

Checkpoints



Check the operation of SW2. Make sure roll paper is fed when you press the paper FEED button. Make sure the continuity changes when you press the button.


Cannot the test for drawer 3 status Table 3-26 Drawer 3 Status Fails Probable part/probable cause

Checkpoints


Drawer kick

Check the connection. Make sure the cable is plugged in. Check each leading pin for drawer 1 or drawer 2.

Plug in the connector. Completed if the drawer is kicked out.


Check the parts for defects. Make sure connectors (CNC2 and CNC3) are connected.

Replace the sub circuit board unit. Completed if the drawer is kicked out.



Replace the main circuit board unit. Completed if the drawer is kicked out.

Rev. B


Confidential Symptoms for other operations Parts do not move smoothly Cannot take up the roll paper smoothly Table 3-27 Opening and Closing the Roll Paper Cover Assembly is not Smooth Probable part/probable cause

Checkpoints


Paper take-up shaft assembly (134)

Confirm that the paper take-up assembly is attached correctly. Make sure parts are located in the correct positions.

Confirm that the paper take-up shaft assembly (134) is attached correctly. Completed if the paper is taken up correctly when you press the paper FEED button.

Take-up belt (523)

Confirm that the belt is attached and has no defects, such as wear and deformation. Be sure the belt is located in the correct position.

Confirm that the take-up belt (523) is attached correctly. Completed if the belt is driven correctly.

Cannot open and close he ribbon cover smoothly Table 3-28 Opening and Closing the Ribbon Cover is not Smooth Probable part/probable cause

Checkpoints


Ribbon cover (109)

Confirm the condition of 2 projections on the cover. Make sure neither is broken.

Replace the ribbon cover (109). Completed if the cover opens and closes smoothly.

Cannot open and close the roll paper cover assembly smoothly Table 3-29 Opening and Closing the Roll Paper Cover Assembly is not Smooth Probable part/probable cause

Checkpoints


Frame rotation spacer (1050)

Confirm that the spacer is fixed. Make sure it is located in the correct position.

Confirm that the frame rotation spacer is attached correctly. Completed if cover opens and closes.

Rotation springs

Confirm spring attachment. Make sure they are located in the correct positions.

Confirm that rotation spring R (1006) is attached correctly. Completed if cover opens and closes.

Platen release spring (1056)

Confirm spring attachment. Make sure it is located in the correct position.

Confirm that the platen release spring (1056) is attached correctly. Completed if cover opens and closes.

Hook spring C (1092)

Confirm spring attachment. Make sure it is located in the correct position.

Confirm that hook spring C (1092) is attached correctly. Completed if cover opens and closes.

The case is dirty Use a dry cloth or one lightly moistened with water to clean case. Be sure to disconnect the power cord from the wall outlet before doing this. Avoid using alcohol, benzene, thinner, trichloroethylene, or ketone-based substances to remove dirt or foreign matter from the printer, because these substances can affect or damage plastic and rubber parts.


Rev. B

Confidential


Test Points on the Main Circuit Board Unit Table 3-30 Test Points on the Main CIrcuit Board Unit Power supply

Power supply

Logic circuit power supply

Mechanism power supply

Pin name

Status

Test connector

Component connector

Correct value

Semiconductor switch on

—

—

U9, pin 3 or pin 4

5V

Semiconductor switch off

—

—

Q1, pins 5 or 6 or 7 or 8

24 V

Logic circuit power supply

—

—

U9, pin 5

3.3 V

Logic circuit power supply (GND)

—

—

Bottom assembly frame

0V

Autocutter (117) power supply

—

—

F3

24 V

Print head power supply

—

—

Q7, pins 5 or 6 or 7 or 8

24 V

Roll paper cover open sensor (515) power supply

Cover opened

—

HP sensor (518) power supply

NE sensor (1096) power supply

RE sensor (514) power supply

Drawer power supply

Rev. B

—

3.3 V CN4, pin 5

Cover closed

—

0V

On home position

—

0V

Not on home position

—

Sufficient roll paper installed

—

Sufficient roll paper not installed

—

Roll paper installed

—

Roll paper not installed

—

—

—

CN4, pin 2

3.3 V 3.3 V

CN6, pin 1

0V 0V

CN4, pin 4

CNC3, pin 5

3.3 V 24 V


Confidential The locations of the main elements on the main circuit board unit are identified below. U9

Q7

CN6

CN4

CN8 F3

CN7

Q1

Resistance Values of Printer Mechanism Components Part Name

Internal Element

Function

Where to Check

Normal Status

Carriage motor (1034)

4-phase stepping motor

Head carriage drive

Remove the cable connector connected to CN7 on the main circuit board. Test between pin 1 and pin 3 and between pin 2 and pin 4.

Approx. 7.2 Ω (per 1 phase)

Receipt paper feed motor (1046)

4-phase stepping motor

Receipt paper feed

Remove the cable connector connected to CN8 on the main circuit board. Test between pin 1 and pin 3 and between pin 2 and pin 4.

Approx. 7.2 Ω (per 1 phase)


Rev. B

Confidential TM-U220 Type A Service Manual

Chapter 4

Disassembly and Assembly This chapter gives instructions to disassemble and assemble the product. Also, the text explains maintenance and cleaning.

Lubricants Lubrication is critical to retaining the printer at its initial performance level throughout its life, as well as avoiding potential problems. Always lubricate at prescribed intervals, using the correct lubricants.

Standard Lubrication ❏ During disassembly and reassembly, clean the parts first, then lubricate them. ❏ Lubricate or overhaul after every 7.5 million lines printed.

Lubricants The types of lubricants used greatly affect the printer’s performance and durability, and a lubricant’s low-temperature characteristics require special attention. EPSON has conducted thorough analyses of the technical data and wide-ranging experimentation on different lubricants. The EPSON selection of lubricants prescribed for use with the printer is based on the results of such research. The prescribed EPSON lubricants are available in 40 cc (40 gr) metal cans or plastic containers (the smallest unit of supply). The three types of lubricants used with this printer are G-15, G-36, and O-13.

Lubrication Points The table on the next page describes the lubrication points, types, and classes. Also see the explanations contained in the diagrams in this chapter.

Tool List ❏ Use the tools below for assembly, disassembly, and adjustment.

Rev. B

Items

Parts code

Note

Gap gauge

1080567

Size: 0.45 mm

1080568

Size: 0.55 mm

Tension gauge

1213123

—

E-ring holder

1074111

Size: 2.3

1080545

Size: 3

1080546

Size: 4

Disassembly and Assembly 4-1

Confidential ❏ Use the grease or oil types indicated below for lubrication. Items

Parts code

Note

Oil

1041442

O-13

Grease

1080605

G-15

1080619

G-36

❏ Use items in the list below when operating the printer. Items

Parts code

Note

AC adapter

2081786

—

Ribbon cassettes

S0152440000

ERC-38 (B)

S0152450000

ERC-38 (B/R)

S0152460000

ERC-38 (P)

Notes for Assembly and Disassembly ❏ For assembly, reverse the procedures described under “Disassembly.” ❏ The symbol in the disassembly procedure indicates that the item needs to be checked. ❏ The 6 symbol in the disassembly procedure indicates an item that needs to be lubricated.

CAUTION: ❏ Wear a grounded wrist band when handling the internal circuit boards to prevent damage from static electricity. ❏ When removing an internal circuit board, place it on an anti-static rubber sheet or similar surface to prevent damage from static electricity. ❏ Be careful not to subject the circuit boards to shock or vibration, because this may damage them. ❏ Do not touch the circuit board or cable terminals with your hands to prevent contamination that may result in a malfunction. Hold circuit boards only by their edges. ❏ Always remove the power supply unit from the printer before working. Power is flowing to the internal circuit boards even if you turn the printer off at the power supply switch. You may damage the printer if you work while the power supply is still attached. ❏ Remove all peripheral equipment connected to the printer before starting work. ❏ Do not perform any work that is not described in this chapter. Doing so may result in injury or damage to the printer.

4-2 Disassembly and Assembly

Rev. B


Shortest Route for Disassembly of Major Parts The diagram below shows the shortest route for disassembly of major parts. Perform disassembly by following this diagram as well as the explanations for the target item.

How to use the key map: 1. Find the component enclosed in a box with solid black lines (not dotted lines) that you want to remove. 2. Trace the line upward from that component to START. 3. You need to remove all components or units in the path back to START. Note that the steps for disconnecting cables and removing plates on the units are not described in this key map.

Rev. B


Confidential Disassembling the TM-U220 Exploded diagram

107

1084 119

109

128

1092 110

107

S03 1099

W01 S02

111

126

108 S03 134 136 1111 135 F S13 136 127 102

S03 S03

S13

127

S03 130

113

129 1110 131

523

139

S02

S03 S02

S02

139

B S02 120

A

S01

122 1085 S01

123 S01

D

S01

1004 201

S01

S03

S01 A

E

S03

S03

112 B

F

C S01

1095

112

106 S03

S03


Rev. B


Disassembly Procedures Disassembly steps Part names

❶

Roll paper cover assembly (119)

Disassembly procedures ❏ ❏ ❏ ❏

Open the roll paper cover assembly (119). Push and take out the open lever shaft (1001), and then remove 1 screw (S02). Release the hooks in 3 positions as shown in the diagram, and remove 2 screws (S03). Remove the roll paper cover assembly (119).

When removing the roll paper cover assembly, release the 3 hooks. (See page 4-16.)

❷

Top case (108)

❏ ❏ ❏

Remove 2 screws (S03). Open the ribbon cover (109). Remove the top case (108) and ribbon cover (109) together.

When attaching the top case be sure not to catch the cables in the frame. (See page 4-19.) Back case (130) Paper take-up gear assembly (1110) Take-up belt (523)

❏ Remove 2 screws (S02). After that, remove the back case (130). ❏ Remove the paper take-up gear assembly (1110).

❹

I/F circuit board unit (122)

❏ Remove the I/F circuit board unit (122).

❺

Bottom plate (1004)

❏ Remove 4 screws (S03),and remove the bottom plate (1004).

❻


❏ Remove connectors attached to the main circuit board unit (201). ❏ Remove 4 screws (S01), and remove the main circuit board unit (201).

❸

When attaching the paper take-up gear assembly (1110), be sure that the take-up gear shaft (139) is attached from the correct direction.

When reattaching each cable to the main circuit board, be sure each cable is attached correctly. (See page 4-27.) Sub circuit board unit (123)

❏ Remove 2 screws (S01), and remove the sub circuit board unit (123).

❼

Autocutter unit (113)

❏ Remove 2 screws (S02), and remove the autocutter unit (113). When attaching the autocutter, confirm that the cutting pattern is selected correctly (partial cut or full cut). (See page 5-4.)

❽

Bottom frame assembly (1085)

❏ Remove 4 screws (S02), and remove the bottom frame assembly (1085). After that, remove the mechanism assembly (120).

Rev. B


Confidential Disassembling the Mechanism Assembly Exploded diagram

E04

S15

S02 1114

137

138

E04

E01

1125 S02

1104 1129

E01

S07

S07

1108

S11 1005 S11 1047 1010

1038

1013

S11 1046 C

E03

502 515 S11 S11

G 1018 S05

S11 S11

1009

1093 E01

523

1110 131 139

S05 E02 1106 S05 1119

1105

S05 W02 S08 1006 S05

1011 1112


1050

E02 1049 E02

Rev. B


DIsassembly Procedures Disassembly Part names steps

❶

Assembly procedures

Take-up belt (523)

❏ ❏

Platen rotation frame 2 (1125) Frame rotation unit (1005)

❏ ❏ ❏ ❏ ❏ ❏

Remove the back case (130). Remove the take-up gear shaft (139). After that, remove the paper take-up gear assembly (131). ❏ Remove the take-up belt (523). When reattaching the take-up gear shaft (139) and take-up belt (523), be sure the shaft is attached correctly. (See page 422.) Also, when attaching platen rotation plate 2 (137), be sure the plate is attached correctly. (See page 4-20.) Remove the cutter rotation plate (1129). Remove platen rotation frame 2 (1125). With platen rotation frame 1 unit closed, remove E-ring 3 (E01). Release rotation spring R (1006) from the hooks. Remove E-ring 4 (E03), and remove the rotation shaft (1009). Remove the frame rotation unit (1005).

Remove the unit while spreading its sides to the right and left. (See page 4-10.) 6 Lubricate the frame rotation unit (1005) with G-36. Cutter frame (1108)

❏ 6

Remove 2 screws (S02), and remove the cutter frame (1108). Lubricate the cutter frame (1108) with G-15.

❷

Fixed blade holder assembly (1013)

❏

Remove 2 screws (S11), and remove the fixed blade holder assembly (1013).

❸

Roll paper guide unit (1038)

❏

Remove 2 screws (S05), and remove the roll paper guide (1038).

❹

Roll paper holder (1010)

❏ ❏

Remove 2 screws, and remove the back case (130). Remove 2 screws (S08), and remove 5 screws (S05) with 1 washer (W02), and then remove the roll paper holder (1010).

❺

Cover open assembly (515)

❏

Remove 1 screw (502) securing the cover open assembly (515).

Paper feed motor sub assembly (1046)

❏

Remove 2 screws (S11), and remove the paper feed motor sub assembly (1046).

Platen fixing shaft R (1049) Middle take-up gear (1106)

❏

Remove 1 E-ring 2.3 (E02), and remove platen fixing shaft R (1049) and the middle take-up gear (1106). Lubricate platen fixing shaft R (1049) with G-36.

Take-up transmission shaft (1112) Take-up transmission gear (1105)

❏

Base frame (1011)

After this, you can remove the base frame (1011). 6 Lubricate the base frame (1011) with G-36.

❻

Rev. B

6

6

Remove 1 E-ring 2.3 (E02), and remove the take-up transmission shaft (1112) and take-up transmission gear (1105). Lubricate the take-up transmission shaft (1112) with G-36.


Confidential Disassembling the Carriage Unit Exploded diagram

520 519

1022

S06 503

1089

521

1025

507 D

E02 1081

1029 S12

1086

S14

E02 E E01

517 512 S11 505 G

516

518

506

1011 1128 1026 1097

1030

E03

1128 1027 1034 S09


S09

506

Rev. B


DIsassembly Procedures Reassembly Part names steps

❶

Ribbon frame assembly (519)

Assembly procedures ❏ ❏ ❏ 6

❷

Carriage sub assembly (1025) Carriage belt (507) Head FFC (521)

❏ ❏ ❏ ❏ ❏ ❏ ❏

Remove the ribbon frame spring (1022). Remove 1 E-ring 4 (E03), and remove the ribbon frame assembly (519). After this, you can remove the print head unit (503). Lubricate the carriage sub assembly (1025) with O-13. Remove the right and left adjustment roller shaft holders (506). Pull out the carriage shaft (1027). Remove the head FFC (521) from the carriage sub assembly (1025). Loosen 2 screws (S12, S14) securing the belt tension plate sub assembly (1086). Remove the carriage belt (507), together with the carriage sub assembly (1025). Remove the belt tension plate sub assembly (1086). Remove the head FFC (521).

Note for replacing the adjustment roller shaft holders (See page 4-22): When you need to remove the adjustment roller shaft holders (506), you must replace each holder with a new part. This is necessary because the part changes when you remove it. Note for attaching the carriage sub assembly (1025) (See page 4-24): When you reassemble the carriage sub assembly (1025), you also need to adjust the unit’s platen gap. (See page 5-5.) Note for attaching the carriage belt (507) (See page 4-23): When you reattach the carriage belt, adjust its tension. (See page 56.) Confirm the head FFC (521) is connected correctly. (See page 4-23.) 6 6

Lubricate the carriage sub assembly (1025) with O-13. Lubricate the belt tension plate sub assembly (1086) with G-36.

Carriage guide plate (1030) Carriage guide plate sub assembly (1026)

❏

Remove 2 screws (S11), and remove the carriage guide plate (1030). Remove the carriage guide plate sub assembly (1026). Lubricate the carriage guide plate (1030) and the belt tension plate sub assembly (1086) with G-36.

Ribbon drive plate sub assembly (517) Ribbon middle gear (512) Ribbon take-up gear sub assembly (516) Belt drive pulley (505)

❏

❺

Carriage motor sub assembly (1034)

❏

Remove 2 screws (S09), and remove the carriage motor sub assembly (1034).

❻


❏

Remove 1 screw (S11), and remove the HP board assembly (518).

❸

❹

Base frame (1011)

Rev. B

❏ 6

❏ ❏ ❏

Remove 1 E-ring 2.3 (E02), and remove the ribbon drive plate sub assembly (517). Remove the ribbon middle gear (512). Remove the ribbon take-up gear sub assembly (516). Remove 1 E-ring 3 (E01), remove the belt drive pulley (505).

When replacing the HP board assembly (518), you need to remove the solder. Resolder when attaching the HP board assembly (518). (See page 4-24.) After this, you can remove the base frame (1011). 6 Lubricate the base frame (1011) with G-15 and G-36.


Confidential Disassembling the Rotation Frame Unit Exploded diagram S10 S10 S09 140 E01

S09

1125

S10 S10

504

1054 1058

1053

1061 E01

E01 509

S09

1057 510 1055 1056 524 E01


Rev. B


DIsassembly Procedures Reassembly steps Part names

❶

Platen release lever (504)

Assembly procedures ❏ Remove 2 E-rings 3 (E01), and remove the platen release lever (504) and platen shaft (1054). 6

❷

Gear plate D sub assembly (1057) Paper feed middle gear (509) Paper feed middle gear B (510)

Lubricate the platen shaft (1054) with G-15.

❏ Remove 2 screws (S10), and remove the gear plate D sub assembly (1057). ❏ Remove 1 E-ring 3 (E01), and remove the paper feed reduction gear 2 (1058). ❏ Remove the paper feed middle gear (509) and paper feed middle gear B (510). 6 Lubricate the gear plate D sub assembly (1057) with G-15.

❸

Platen assembly 3 (522)

❏ Remove 1 E-ring 3 (E01), and pull out the platen shaft (1054). ❏ In doing so, remove the paper feed middle gear B (510), the platen release plate (1055), and the platen release lever (504) together. Take care not to lose the platen release spring (1056). ❏ Remove platen assembly 3 (522). ❏ Remove 1 screw (S09), and remove the bottom holding plate BM (1061). When installing the frame rotation unit (1005) on the base frame assembly, check how to lead the autocutter unit (113) cable. (See page 4-19.)

❹

Platen frame (1053)

❏

Platen rotation frame 2 (1125)

After this, you can remove the platen rotation frame 2 (1125).

Remove 3 screws (S10), and remove the platen frame (1053).

6 Lubricate the platen rotation frame 2 (1125) with G-15.

Rev. B


Confidential Disassembling the Roll Paper Guide / Roll Paper Holder Exploded diagram

1101 1039 1096 1041 1126 1042 D 514 1040

1043

G

1045

1038 1010

508

S08 S08


Rev. B


DIsassembly Procedures Use the steps below for disassembling the roll paper holder. Reassembly steps

Part names

Assembly procedures

❶


❏ Remove the paper end assembly (514). When replacing the paper end assembly (514), you need to pull out the wire attached on the HP circuit board. (See page 4-24.)

❷

Roll paper holder (1010)

❏ ❏

Remove 2 screws (S05), and remove the roll paper holder plate (508). Remove the roll paper holder (1010).

Use the steps below for disassembling the roll paper guide. Reassembly steps Part names

❶

❷

Rev. B

Assembly procedures

NE lead wire set (1096)

❏

Remove the NE lead wire set (1096).


❏

Remove the paper end assembly (514).

Roll paper guide (1038)

❏

Turn the detector adjustment screw (1040), and remove the NE detector assembly (1041) and the nut (1126). Then, remove the roll paper guide (1038).


Confidential Disassembling the Autocutter Unit / Fixed Blade Holder Assembly Exploded diagram

S04 F 1090 1071 104 118

117

115

103 121 105

114

513

1016

1017

1127 1102 1015

1014


Rev. B


DIsassembly Procedures Use the steps below for disassembling the autocutter unit. Reassembly steps

❶

Part names

Assembly procedures

Cutter cover assembly (115)

❏ Remove the cutter cover assembly (115). 6

❷

Cutter motor sub assembly (117) Micro switch (121)

Lubricate the cutter frame assembly (114) with G-36.

❏ Remove 1 screw (S04), and remove the cutter motor sub assembly (117). ❏ Remove 1 screw (105), and remove the micro switch (121). ❏ Remove 2 guard tubes C (118). When removing a guard tube C (118), you need to pull out the wire attached to the motor. (See page 4-19.) 6 Lubricate the paper hold roller (1015) with G-36.

Follow the steps below to disassemble the fixed blade holder assembly. Reassembly steps

Part names

Assembly procedures

❶

Fixed blade (513)

❏ ❏ ❏

❷


❏

Remove the fixed blade (513). Remove the fixed blade spring (1016). Remove the fixed blade holder (1017). When you replace the paper hold roller (1015), you need to remove 1 E-ring 2.3 (E02).

Remove the paper hold roller (1015) and the paper hold roller shaft (1102). ❏ Remove the paper hold spring (1014). When installing the paper hold spring (1014), check how to attach the hook. (See page 4-18.) 6 Lubricate the paper hold roller (1015) with G-36.

Rev. B


Confidential Disassembly and Assembly Reference Removing the Roll Paper Cover Assembly 1. Push the shaft and take it out from the inside of the frame. 2. Remove 1 screw. 3. Release the hooks in 3 positions, as shown. 4. Remove 2 screws.

Open lever shaft (1001)

Removing and Attaching the Top Case When removing the top case, release both hooks, as shown at right. Hooks

Case


Rev. B

Confidential TM-U220 Type A Service Manual Removing and Attaching the Top Case (Continued) Lift the case to remove as shown at right.

Removing and Attaching Rotation Spring R When removing the springs, push the springs to the inside to release each hook, as shown.

When attaching the springs, insert each hook in the hole as shown.

Hook

Rev. B


Confidential Attaching the Paper Hold Spring Place the paper hold spring on the fixed blade holder, as shown.

Attaching the Fixed Blade Holder Assembly and Manual Cutter Holder

Spring

Fixed blade holder assembly

Hole

Hook

Attaching the Cover Open Assembly When attaching the cover open assembly to the frame, be sure that the wires are threaded through the hole. Cover open assembly

Hole

Wires


Rev. B

Confidential TM-U220 Type A Service Manual Leading the Autocutter Unit Wires

Guard tube and lead wires

Guard tube and lead wires

Be sure there is slack in the cable, as shown.

Autocutter unit cable

This is the point for attaching the top case hook. When attaching the top case, be sure not to catch the autocutter unit cable at this point.

Rev. B


Confidential Attaching Platen Rotation Plate 2 Confirm that the edge of platen rotation plate 2 does not touch the edge of platen rotation frame 2. The point not to touch is marked with red in the illustration.

Platen rotation plate 2

Platen rotation frame 2

Attaching the Platen Release Spring When attaching the platen release spring, you need to put it on the plate as shown. Insulator plate assembly


Platen release plate

Rev. B

Confidential TM-U220 Type A Service Manual Attaching Platen Assembly 3 (522) 1. Attach platen assembly 3 (522) to the platen frame (1053) with 2 screws (S09) from upper of the platen rotation frame 2 (1125).

S10 S10 S09

2. Attach platen assembly 3 (522) to the platen frame (1053) with 2 screws (S10) from left side of the platen rotation frame 2 (1125).

E01

S09

3. Attach platen assembly 3 (522) to the platen frame (1053) with 2 screws (S10) from right side of the platen rotation frame 2 (1125).

1125

S10

S10

1058 E01

1061

1053

509 S09 1057 510 1055 1056

Rev. B


Confidential Attaching the Take-up Belt Install the back case (130) onto the mechanism assembly. After that, install the take-up belt (523) and paper take-up gear assembly (131) onto the back case. Put the back case sheet over the hole in the back case. Paper take-up gear assembly (1110) Take-up gear shaft (139) Paper take-up gear assembly (131)

Take-up belt (523)

Back case (130)

Hook the take-up belt (523) to the take-up transmission gear (1105). Middle take-up gear (1106)

Take-up transmission gear (1105)

Take-up belt (523)

Take-up transmission shaft (1112)

Removing the Adjustment Roller Shaft Holder When removing the shaft holder adjustment roller, you need to rotate it as following.

Adjustment roller shaft holder


Rev. B

Confidential TM-U220 Type A Service Manual Attaching the Carriage Belt

Carriage belt

Carriage sub assembly

Attaching the Head FFC When attaching the FFC to the frame, be sure that the FFC is threaded as shown.

Rev. B


Confidential Attaching the Carriage Sub Assembly When assembling the carriage unit, be sure the carriage sub assembly is attached to the carriage guide plate as shown. When removing the adjustment roller shaft holder, rotate it as shown.

Carriage guide plate



Attaching the HP Board Assembly When replacing the HP board assembly, be sure the wires are soldered to the board as shown below.

RED GRY BLK BLU ORG BRW WHT

BRW

WHT

When attaching the HP board assembly, be sure the wires are threaded through the hole and the board is attached to the hooks as shown.

HP board assembly Hook

Hole


Rev. B

Confidential TM-U220 Type A Service Manual Attaching the Roll Paper Guide Unit Roll paper guide unit

Wires

Rev. B


Confidential Wiring Placement for Each Cable The illustration below indicates paths for the cable wiring.

Cover open assembly wires (515) Paper feed motor sub assembly wires (1046)

HP board assembly wires (518)

Wires in the PF lead wire set (1047)


Wires in the NE lead wire set (1096)

Rev. B

Confidential TM-U220 Type A Service Manual Attaching Each Cable to the Main Circuit Board

CN2:

Connecting the cable for the autocutter unit (113)

CN4:

Connecting the cable for the HP board assembly (518)

CN6:

Connecting the cable for the NE lead wire set (1096)

CN7: CN8:

Connecting the cable for the carriage motor sub assembly (1034) Connecting the cable for the PF lead wire set (1047)

CN10: Connecting the cable from CNC3.

When connecting the cables to the main circuit board, be sure there is slack in the lead wires, as shown.

FFC

Wires

Wires

Rev. B


Confidential Lubrication Reference Lubrication Some lubrication points are indicated in the illustrations below. See the first few pages of this chapter for additional information about lubrication, and also see the oil drop icons beside text ages in the disassembly procedure tables for various printer components.


Rev. B

Confidential TM-U220 Type A Service Manual Lubricate the points between the carriage shaft and carriage sub assembly (2 points) with O-13. Carriage sub assembly

Carriage shaft Lubricate 1 point on the carriage sub assembly with G-36. Lubricate one point on the carriage guide plate with G-36.



Lubricate the switching points on the carriage guide plate sub assembly (ribbon switch lever) with G-36.

Carriage guide plate sub assembly

Lubricate the point of between the rotation shaft and base frame with G-36.

Rotation shaft

Base frame

Rev. B


Confidential Oil the t of the paper feed reduction gear 1 (1093) and the NE detector lever (1043).

Paper feed reduction gear 1 (1093)

Oil (G-36)

E-ring 3 (E01)

NE detector lever

Oil the t of the paper feed reduction gear 2 and the paper feed reduction shaft 2. Paper feed reduction gear 2

Oil (G-36) E-ring 3 (E01)

Paper feed reduction shaft 2

Oil the t of the middle take-up gear and platen fixing shaft R. Oil the t of the take-up transmission gear and the take-up transmission shaft.

Oil (G-36) Middle take-up gear

Oil (G-36) Take-up transmission gear


Rev. B

Confidential


Chapter 5

Adjustment and Setting Setting the Installation Position for the Roll Paper Near-End Detector This printer allows you to change the installation position for the roll paper near-end detector using the following steps. 1. Loosen the detector adjustment screw with a coin or similar tool. Turn the screw at least 3 or 4 times. 2. Push the detector lever in until it touches the back of the hole. 3. While pushing the detector lever, turn the tab until the lever clicks into place in the desired hole.

Detector adjustment screw Detector lever

4. Secure the detector adjustment screw. 5. Make sure the detector lever moves smoothly.

Rev. B

Adjustment and Setting 5-1

Confidential Adjusting the Detection Point for the Roll Paper Near-End Detector Below are 2 reasons the roll paper NE detector might require an adjustment: ❏ To adjust the detection for the diameter of the roll paper core. ❏ To adjust the amount of remaining paper before the sensor detects a near end.

1. Open the roll paper cover, and remove the paper roll. 2. Loosen the detector adjustment screw with a coin or similar tool. 3. Adjust the detector by sliding the lever in either of the directions shown below.

Knob Detector adjustment screw Detector lever

4. Tighten the detector adjustment screw. 5. Check to be sure that the detecting lever moves freely. 6. Replace the paper roll.

5-2 Adjustment and Setting

Rev. B

Confidential


Setting the Paper Roll Width The TM-U220 accommodates 76 mm {3"}, 69.5 mm {2.74"}, and 57.5 mm {2.26"} width paper rolls with no adjustments. For the each roll width, use the roll paper spacer included with the printer. Note: ❏ The default paper width setting value saved in NV memory is 76 mm. So, if the customer does not use 76 mm width paper, return the printer only after setting the memory switch to the customer’s paper width value using the appropriate method for each printer function below. Use the TM Service Utility (See page 2-5.) Use the Memory Switch Setup Mode (See page 5-12.) ❏ For printer models with a paper near-end detector, be careful not to pinch the near-end detector lead wires between the roll paper spacer and the roll paper holder, and be sure to push the lead wires inside, so that the paper-end detector lead wires do not the motor gear.

1. Open the paper roll cover. 2. To set the each roll paper width, position the spacer as shown in the illustration below.

A: paper width = 76 m m Roll paper spacer

B: paper width = 69.5 mm

A Positions for attaching the screw (on the left side)

C: paper width = 57.5mm

B C

3. Position the roll paper spacer for the appropriate paper width. (See figure above.) 4. Tighten the spacer with 2 screws included with the spacer. (See figure above.)

Rev. B


Confidential Setting the Autocutter The TM-U220 autocutter can be set to either “partial cut“ or “full cut“ using the steps below. Note: Do not change the cutting type from partial cut to full cut after the printer has been used. Otherwise, the printer may not be reliable, because the wear-out level of the cutter blade differs. 1. Make sure the power supply is disconnected. 2. Open the roll paper cover, and remove it. (See page 4-16.) 3. Loosen the screw as indicated in following figure.

Remove the screw

Loosen the screw

Emergency cutter

4. Lift the top of the cutter unit upward towards you, and remove from the dowel. dowel

Cutter unit

5. When you select partial cut (default), you have to adjust the dowel to the right, as shown. When you select full cut, you have to adjust the dowel to left, as shown. Partial cut

Full cut

6. Tighten the 2 screws. Attach the roll paper cover again, and install the shaft that was taken out in step 2. Note: ❏ Run the self-test to confirm the cutter action. (See page 2-2.) 5-4 Adjustment and Setting

Rev. B

Confidential


Platen Gap Adjustment Adjust the platen gap on the reassembled TM-U220 printer unit. Use the following steps to adjust the platen gap for the printer. Adjust the printer’s platen gap when you have performed any one of the following: Disassembly Items Requiring Platen Gap Adjustment of the Printer ❏

When you have replaced or removed the platen assembly.

❏

When you loosened the screws fastening the carriage unit.

❏

When you replaced or removed the print head.

Note: Once removed, do not reuse an adjustment roller shaft holder. Also, the platen gap adjustment uses the standard of “0.45 mm thickness gauge falls; 0.55 mm thickness gauge does not fall” 1. Open the platen rotation frame, and tighten the adjustment roller shaft holder firmly. 2. Hold up the platen rotation frame and make sure the adjustment roller shaft holder is tightened firmly on the both sides. 3. Move the print head unit to the left; insert the gauge from the left side; and adjust the gap while rotating the adjustment shaft holder. 4. Move the print head unit to the right; insert the gauge from the right side; and adjust the gap while rotating the adjustment shaft holder. 5. Move the print head unit to the left; insert the gauge from the left side; and check the gap. If it does not meet the standard, adjust the gap while rotating the adjustment shaft holder. 6. Move the print head unit to the right; insert the gauge from the right side; and check the gap. If it does not meet the standard, adjust the gap while rotating the adjustment shaft holder.

Gauge

Gauge

Adjustment roller shaft holder Narrower gap

Rev. B

Wider gap


Confidential Carriage Belt Tension Adjustment 1. Loosen the screw for the belt tension plate assembly. Hook the end of the tension gauge to the hole in the belt tension plate assembly, adjust the tension properly, and tighten with the screw. 2. Check the belt tension. Note: Make sure the belt tension plate is stable when loosening the screw that you tightened for the belt tension plate while pulling the carriage belt with the tension gauge by 7.35N. 3. Tighten the belt tension plate assembly again with the screw.

Tension gauge

Hook the end of the tension gauge and adjust the tension.


Rev. B

Confidential


Adjust Various Settings The items below can be adjusted for this printer: ❏ DIP switches (communication condition, busy condition, print column, receive buffer capacity, etc.) ❏ Memory switches (serial communication conditions, roll paper width, cover open status handling, etc.) ❏ Roll paper width (76 mm / 69.5 mm / 59.5 mm): adjusted with the spacer and memory switch ❏ Roll paper near-end detector position

The current settings can be confirmed by the self-test. (See page 2-2.) Note: When you use a serial interface model with 1200 bps, 2400 bps, or 19200 bps, you have to adjust the “serial interface selection“ DIP switch and the “serial communication condition“ memory switch. When you adjust these items, we recommend that you confirm whether the new setting is enabled or disabled. Confirming by performing a self-test. (See page 2-2.)

How to Confirm the Current Settings Use a self-test to confirm the current settings. (See page 2-2.)

Adjusting the DIP Switches The printer has 2 sets of DIP switches. The function of the DIP switches is different for each interface model. If you need to change settings, follow the steps below to make your changes:

CAUTION: Turn off the power while removing the DIP switch cover to prevent an electric short, which can damage the printer. Use a Phillips (crosshead) screwdriver to remove the screw holding the DIP switch cover.

Rev. B


Confidential Look at the numbers and letters in the area indicated in the illustration. If the last letters are “US,” use the “US” tables on the next page. If the last letters are “STD,” use the “STD” tables below.

ON OFF

ON OFF

Note: The switch functions are shown in the following sections. US DIP switch functions are slightly different from the STD functions. STD Tables Serial Model (DIP Switch 1)

(DIP Switch 2)

SW Function

On

Off

SW Function

On

Off

1

Data receive error

Ignored

Prints “?”

1

Print column selection

42/35

40/33

2

Receive buffer capacity

40 bytes

4KB

2

Reserved Fixed to On — (autocutter enabled/ disabled)

3

Handshaking

XON/XOFF

DTR/DSR

3

Reserved

—

Fixed to Off

4

Word length

7 bits

8 bits

4

Serial interface selection

Memory switch

DIP switch

5

Parity check

Yes

No

5

Reserved

—

Fixed to Off

6

Parity selection

Even

Odd

6

Reserved

—

Fixed to Off

7

Transmission speed

4800 bps

9600 bps

7

Pin 6 reset signal

Used

Not used

8

Busy condition

Receive buffer full

Receive buffer full or offline

8

Pin 25 reset signal

Used

Not used

Parallel / USB / Ethernet Model (Not for Serial Models) (DIP Switch 1)

(DIP Switch 2)

SW

Function

On

Off

SW Function

On

1

Auto line feed

Enabled

Disabled

1


42/35

40/33

2


40 bytes

4KB

2

Reserved (Autocutter enabled/ disabled)

Fixed to On

—

3~7 Reserved

—

Fixed to Off

3~7 Reserved

—

Fixed to Off

8

Receive buffer full


8

Used

Not used

BUSY condition

Pin 31 reset signal

Off

Note: See the tables on the next page when the letters in the illustration above are “US.” See “Notes for DIP Switch 2-1” on page 5-9 for further information on the settings for DIP SW 2-1. When you use a serial interface model with 1200 bps, 2400 bps, or 19200 bps, adjust the “serial interface selection“ DIP switch function and the “serial communication condition“ memory switch.


Rev. B

Confidential


US Tables Serial Model (DIP Switch 1)

(DIP Switch 2)

SW Function

On

Off

SW Function

On

Off

1

Data receive error

Ignored

Prints “?”

1

Print column

42/35

40/33

2


40 bytes

4KB

2


Fixed to On —

3

Handshaking

XON/XOFF

DTR/DSR

3

Pin 6 reset signal

Used

Not used

4

Word length

7 bits

8 bits

4

Pin 25 reset signal

Used

Not used

5

Parity check

Yes

No

5

Reserved

—

Fixed to Off

6

Parity selection

Even

Odd

6

Reserved

—

Fixed to Off

7

Transmission speed

4800 bps

9600 bps

7

Reserved

—

Fixed to Off

8

Busy condition

Receive buffer full


8

Serial interface selection

Memory switch

DIP switch

Parallel / USB / Ethernet Model (Not for Serial Models) (DIP Switch 1)

(DIP Switch 2)

SW

Function

On

Off

SW

Function

On

1

Auto line feed

Enabled

Disabled

1


42/35

Off 40/33

2


40 bytes

4KB

2


Fixed to On

—

3

Fixed to Off

Reserved

—

Fixed to Off

3

Reserved

—

4~7 Reserved

—

Fixed to Off

4

Pin 31 reset signal

Used

Not used

8

Receive buffer full


5~8 Reserved

—

Fixed to Off

Busy condition

Note: See the previous page for STD tables. Notes for DIP Switch 2-1 DIP switch 2-1 defines the number of print columns per line as shown in the following table. DIP switch 2-1 status Paper width

Character font

ON

OFF

76 mm

Font A (9 x 9)

35

33

Font B (7 x 9)

42

40

Font A (9 x 9)

32

30

Font B (7 x 9)

40

36

Font A (9 x 9)

27

25

Font B (7 x 9)

33

30

69.5 mm

57.5 mm

Units: l (characters per line)

Rev. B


Confidential Memory Switches This printer has memory switches, which are software switches that can be set to On or Off with the memory switch setting utility. Available memory switch settings include MSW 2, MSW 8, the customized value setting, and serial communication condition. Settings are shown in the table below. (The default for all settings is Off.) Note: Memory switches can be changed using either of the following methods. • Memory switch setting utility • Memory switch setup mode (There are limitations on the settings available.) For the memory switch settings that can be changed using the memory switch setup mode, see page 5-12. Memory switch settings are stored in NV memory. Therefore, even if the printer is turned off, the settings are maintained. Excessive use of this function may destroy the NV memory. As a guideline, do not use this function more than 10 times a day. Memory Switch 2 SW

Function

On

Off

1

Reserved

—

Fixed to Off

2

Reserved

—

Fixed to Off

3

Selection of the Simplified Chinese character code system

GB2312

GB18030

—

Fixed to Off

4 ~ 8 Reserved

Note: MSW 2-3: Setting memory switch MSW 2-3 affects Simplified Chinese models only. Memory Switch 8 SW

Function

1 ~ 4 Reserved

On

Off

—

Fixed to Off

5

Selection for cover open status

Cover open

Paper end

6

Reserved

—

Fixed to Off

7

Condition to release Busy in the receive buffer Remaining space ≥ 138 bytes

Remaining space ≥ 256 bytes

8

Printer cover open during operation

Automatically recovers


Can recover by correction of the error and command

Rev. B

Confidential


Note: MSW 8-5: When Off is selected, the status bit for "roll paper end sensor" is transmitted from the printer every time the roll paper cover is opened or closed. When On is selected, the status bit for "roll paper cover open / close" is changed and is transmitted from the printer every time the roll paper cover is opened or closed. MSW 8-8: When Off is selected, the status bit for "automatically recoverable error" is changed and transmitted from the printer every time the roll paper cover is opened. When On is selected, the status bit for "mechanical error" is changed and transmitted from the printer every time the roll paper cover is opened. MSW 8-5 and 8-8 can be set using the memory switch setup mode. See page 5-12. Customized Value Function Roll paper width

Selectable values 57.5 mm

69.5 mm

76 mm (default value)

—

Note: These values can be set using the memory switch setup mode. (See page 5-12.) Also, when adjusting the roll paper width, see page 5-3. Serial Communications Function baud rate

Selectable values 1200 bps

2400 bps

4800 bps

9600 bps

19200 bps

—

None

Odd

Even

—

Handshake

DSR/DTR

XON/XOFF

Data length

7 bit

8 bit

Parity

Note: There are 2 methods for changing serial communication conditions: hardware DIP switches and software memory switches, set using the service utility. DIP SW2 selects which settings are effective: DIP switches or memory switches. Also, these memory settings can be set using the memory switch setup mode described below.

Rev. B


Confidential Memory Switch Setup Mode The following settings are available in the memory switch setup mode: ❏ Basic serial communication conditions (serial interface only) ❏ Receive buffer full release condition (MSW 8-7) ❏ Roll paper width (customized value) ❏ Cover open status (MSW 8-5)

Note: All new settings are lost if the power is turned off during the memory switch setup mode. Be sure to follow the proper procedure, and turn the power off at the correct time. Starting memory switch setup mode Use the following steps to start memory switch setup mode. 1. Open the roll paper cover. 2. Turn the power on while pressing the paper FEED button. 3. Press the FEED button twice while the POWER, ERROR, and PAPER OUT LEDs are lighting. 4. Close the cover. The printer prints the current settings for the memory switches and instructions. 5. Follow the printed instructions to set the switches. Note: During memory switch setup, the PAPER OUT LED may flash. The number of times the LED flashes indicates the number of times to press the FEED button before closing the roll paper cover. Ending memory switch setup mode Once the setting is performed, the contents of the setting are stored. Then, the printer initializes. When initialization is finished, the printer returns to normal operating mode. Selecting individual settings ❏ Basic serial interface settings

To select transmission conditions, first choose “Serial interface settings”; then select data length, handshake, or parity.


Rev. B

Confidential


Press the FEED button the number of times required to select the desired “Serial interface settings” transmission conditions. Press FEED button

Setting selected

0 ~ 3 times:

No change

4 times:

19200 bps

5 times:

9600 bps

6 times:

4800 bps

7 times:

2400 bps

8 times:

1200 bps

9 or more times:

No change

bps: Indicates the number of transmitted bits per second (bps).

❏ Data length, handshake, or parity

Press the FEED button the number of times required to select the desired data length, handshake, or parity setting to be used for transmissions. Press FEED button

Setting selected Data Length

0 times:

No change

1 time:

8 bits

Handshake

Parity

DTR/DSR control

No parity

2 times:

Even

3 times:

Odd

4 times:

XON/XOFF control

No parity

5 times:

Even

6 times:

Odd

7 times:

7 bits

DTR/DSR control

No parity

8 times:

Even

9 times:

Odd

10 times:

XON/XOFF control

No parity

11 times:

Even

12 times:

Odd

13 or more times:

Rev. B

No change


Confidential


Chapter 6

Preparation for Shipment Follow the instructions below before sending the printer back to the customer.

Inspection and Maintenance Perform inspection and maintenance procedures described below properly to allow this unit to operate for the years of trouble-free operation for which it is designed.

Maintenance Procedures The inspection procedures described in the below table. Periodic Inspection Checkpoints

Standards

Remedies

Do not allow dust, paper particles, or dirt to build up on or in the printer.

Clean the printer thoroughly with a vacuum cleaner.

Do not leave small pieces of paper in the paper path.

Remove any pieces of paper from the paper path.

Lubrication

See the explanations in this chapter.

Lubricate the points shown in the diagrams.

Operation check

When you check each printer component, you should find no abnormalities.

Check the printer following “Repair Guide,” in Chapter 2.

Shape of the springs

No spring should be bent or deformed.

Replace any deformed springs.

Ribbon cassette

The ribbon cassette should be properly installed in the printer.

See “Installing or Replacing the Ribbon Cassette” on page 1-7.

Dust, paper particles, or dirt on and in the printer

Cleaning How to Clean the Cases

WARNING: To avoid electric shock, be sure to disconnect the power cord from the electrical outlet. Use a dry cloth to wipe away dirt. If the dirt proves difficult to remove, slightly moisten the cloth with water or a mild detergent solution.

CAUTION: Never clean the case with disinfectant, bleach, alcohol, benzene, thinner, chlorine, or ketone; otherwise the dirt may become difficult to remove. Also, these chemicals may cause the case to discolor, dissolve, or deform.

Rev. B

Preparation for Shipment 6-1

Confidential Removing Dirt, Paper Chips, and Dust from Inside the Printer Wipe off stains with a clean, dry cloth. If the stains do not wipe off, use a neutral detergent.

CAUTION: Check the amount of lubrication on each cleaned area and lubricate as needed. See “Lubricants” at the beginning of Chapter 4. Also see the explanations for the lubrication points contained in the diagrams in Chapter 4.

6-2 Preparation for Shipment

Rev. B


Appendix

Parts List Reference Number List

Table A-1 Parts List by Reference Number Ref. #

Service Manual Name

Parts Price List Name

Qty.

Supplied as a part?

102

Power switch cover

Cover,power switch

1

Yes

103

M-T88 shield tube

Shield tube M-T88

2

Yes

104

Manual cutter screw

Screw,manual cutter

1

Yes

105

Switch 1 screw

Screw,switch,1

1

Yes

106

Caution C seal

Seal,caution,C

1

Yes

107

Logo plate

Logo plate

2

Yes

108

Top case

Case,top

1

Yes

109

Ribbon cover

Cover,ribbon

1

Yes

110

Switch

Switch

1

Yes

111

Operation label A

Label,operation,A

1

Yes

112

Rubber foot

Rubber foot

2

Yes

113

Autocutter unit

Auto cutter unit

1

Yes

114

Cutter frame assembly

Frame, cutter assembly

1

Yes

115

Cutter cover assembly

Cover, cutter assembly

1

No

117

Cutter motor sub assembly

Motor, cutter sub assembly

1

Yes

118

Guard tube C

Guard tube,C

1

Yes

119

Cover Roll paper assembly

Cover,roll paper assembly,AA

1

Yes

120

Mechanism assembly

Mechanism assembly,A

1

Yes

121

Micro switch

Micro switch

1

Yes

122

I/F circuit board unit

I/F circuit board unit

1

Yes

123

Sub circuit board unit

Sub circuit board unit

1

Yes

124

AC adapter

AC adapter

1

Yes

125

AC cable, USA

AC cable, USA

1

Yes

126

Front sheet

sheet, front

1

Yes

128

Lever open shaft A

Shaft,lever open,A

1

Yes

130

Back case

Case,Back,AA

1

Yes

131

Paper take-up gear assembly

Paper Take-up gear assembly

1

Yes

134

Paper take-up shaft assembly

Paper take-up shaft assembly

1

Yes

135

Take-up flange

Take-up flange

1

Yes

136

Take-up flap

Take-up flap

1

Yes

Rev. B

Parts List Appendix-1

Confidential Table A-1 Parts List by Reference Number Ref. #

Service Manual Name


Qty.

Supplied as a part?

137

Platen rotation plate 2

Plate,platen rotation,2

1

Yes

138

Cover open lever A

Lever ,cover open,A

1

Yes

139

Take-up gear shaft

Shaft,take-up gear

1

Yes

140

Operation label D

Label,operation,D

1

Yes

141

Rubber foot B

Rubber foot,B

2

Yes

201

Main circuit board unit

Main circuit board unit

1

Yes

502

Switch 1 screw

Screw,switch,1

1

Yes

503

Print head unit

Print head unit

1

Yes

504

Platen release lever

Lever,platen release

1

Yes

505

Belt drive pulley

Pulley,belt drive

2

Yes

506


Shaft holder,adjustment roller

1

Yes

507

Carriage belt

Carriage belt

1

Yes

508

Roll paper holder plate

Holder roll paper plate

1

Yes

509

Paper feed middle gear

Gear,paper feed middle

1

Yes

510

Paper feed middle gear B

Gear,paper feed middle, B

1

Yes

512

Ribbon middle gear

Gear,ribbon middle

1

Yes

513

Fixed blade

Fixed blade

1

Yes

514

Paper end assembly

Paper end assembly

1

Yes

515

Cover open assembly

Cover open assembly

1

Yes

516

Ribbon take-up gear sub assembly

Gear, ribbon take-up sub assembly

1

Yes

517

Ribbon drive plate sub assembly

Plate,ribbon drive sub assembly

1

Yes

518

HP board assembly

HP board assembly

1

Yes

519

Ribbon frame assembly

Frame,ribbon assembly

1

Yes

520

Operation label C

Label,operation,C

1

Yes

521

Head FFC

FFC,head

1

Yes

522

Platen assembly 3

Platen assembly,3

1

Yes

523

Take-up belt

Belt,take-up

1

Yes

1001

Open lever shaft

Shaft,lever open

1

No

1003

Open lever

Lever,open

1

No

1004

Bottom plate

Plate,bottom

1

No

1005

Frame rotation unit

Frame rotation unit

1

No

1006

Rotation spring R

Spring,rotation,R

1

No

1009

Rotation shaft

Shaft,rotation

1

No

1010

Roll paper holder

Holder,roll paper

1

No

1011

Base frame

Frame,base

1

No

1012

Base frame

Frame,base

1

No

1013

Fixed blade holder assembly

Holder,fixed blade assembly

1

No

Appendix-2 Parts List

Rev. B

Confidential TM-U220 Type A Service Manual Table A-1 Parts List by Reference Number Ref. #

Service Manual Name


Qty.

Supplied as a part?

1014

Paper hold spring

Spring,paper hold

1

No

1015

Paper hold roller

Roller,paper hold

2

No

1016

Fixed blade spring

Spring,fixed blade

1

No

1017

Fixed blade holder

Holder,fixed blade

1

No

1018

Cover open plate

Plate,cover open

1

No

1022

Ribbon frame spring

Spring,ribbon frame

1

No

1023

Ribbon frame shaft L

Shaft,ribbon frame,L

1

No

1024

Ribbon frame

Frame,ribbon

1

No

1025



1

No

1026

Carriage guide plate sub assembly

Plate,carriage guide sub assembly

1

No

1027

Carriage shaft

Shaft,carriage

1

No

1028

Carriage motor plate sub assembly

Plate,carriage motor sub assembly

1

No

1029

Belt tension pulley

Pulley,belt tension

1

No

1030


Plate,carriage guide

1

No

1032

Belt pulley shaft

Shaft,belt pulley

1

No

1033

Belt tension plate

Plate belt tension

1

No

1034

Carriage motor sub assembly

Motor,carriage sub assembly

1

No

1035

Ribbon take-up gear shaft

Shaft,ribbon take-up gear

1

No

1036

Middle ribbon gear shaft

Shaft,ribbon middle gear

1

No

1037

Roll paper guide

Guide,roll paper

1

No

1038

Roll paper guide unit

Guide,roll paper unit

1

No

1039

Micro switch

Micro switch

1

No

1040

Detector adjustment screw

Detector adjustment screw

1

No

1041

NE detector assembly

N.E.detector assembly

1

No

1042

NE detector holder

Holder,N.E.detector

1

No

1043

NE detector lever

Lever,N.E.detector

1

No

1044

Roll paper holder assembly

Holder roll paper assembly

1

No

1045

Paper guide roller

Roller,paper guide

1

No

1046

Paper feed motor sub assembly

Motor paper feed sub assembly

1

No

1047

PF lead wire set

Lead wire set,PF

1

No

1048


Shaft,paper feed reduction,1

1

No

1049

Platen fixing shaft R

Shaft,platen fix,R

1

No

1050

Rotation frame spacer

Spacer,frame rotation

1

No

1052

Cover open lever

Lever,cover open

1

No

1053

Platen frame

Frame,platen

1

No

1054

Platen shaft

Shaft,platen

1

No

1055

Platen release plate

Plate,platen release

1

No

Rev. B



Service Manual Name


Qty.

Supplied as a part?

1056

Platen release spring

Spring,platen release

1

No

1057

Gear plate D sub assembly

Plate,gear,D sub assembly

1

No

1058

Paper feed reduction gear 2

Gear,paper feed reduction,2

1

No

1059


Shaft,paper feed reduction,2

1

No

1060

Middle paper feed shaft

Shaft,paper feed middle

1

No

1061

Bottom holding plate bm

Holding plate,bm,bottom

1

No

1063

Paper feed gear

Gear, paper feed

1

No

1069

S Push N, 3, F / Zn

S Push N,3,F / Zn

1

No

1071

Cutter cover sub assembly

Cover, cutter sub assembly

1

No

1072

Drive gear sub assembly

Gear, drive sub assembly

1

No

1073

Insulator plate assembly

Plate,insulator assembly

1

No

1074

Platen

Platen

1

No

1075

Paper feed roller

Paper feed roller

1

No

1076

Platen assembly 1

Platen assembly,1

1

No

1077

Belt tension plate assembly

Plate belt tension assembly

1

No

1078

Carriage

Carriage

1

No

1079

Base frame sub unit

Frame,base sub unit

1

No

1080

Micro switch

Micro switch

1

No

1081

Ferrite core

Ferrite core

1

No

1084

Roll paper cover BA

Cover,roll paper,BA

1

No

1085

Bottom frame assembly

Frame,bottom assembly

1

No

1086

Belt tension plate sub assembly

Plate belt tension sub assembly

1

No

1088

Ribbon take-up spring

Spring,ribbon take-up

1

No

1089

FFC cover tape

Tape,FFC cover

1

No

1090

AC lead wire set

Lead wire set,AC

1

No

1091

Micro switch

Micro switch

1

No

1092

Hook spring C

Spring,hook,C

1

No

1093

Paper feed reduction gear 1

Gear,paper feed reduction,1

1

No

1094

Gear drive

Gear drive

1

No

1095

IC cover

IC Cover

1

No

1096

NE lead wire set

Lead wire set, NE

1

No

1097

Ribbon release spring

Spring,ribbon release

1

No

1099

Ribbon cassette

Ribbon cassette

1

No

1100

CBS-TITE screw, 3X12, F/ZN

C.B.S-TITE SCREW,3X12,F/ZN

2

No

1101

CBB-TITE screw, 2X8, F/ZN

C.B.B-TITE SCREW,2X8,F/ZN

1

No

1102

Paper hold roller shaft

Shaft, paper hold roller

1

No

1104

Cutter rotation spring

Spring,rotation cutter

1

No


Rev. B

Confidential TM-U220 Type A Service Manual Table A-1 Parts List by Reference Number Ref. #

Service Manual Name


Qty.

Supplied as a part?

1105

Take-up transmission gear

Gear,take-up transmission

1

No

1106

Middle take-up gear

Gear,take-up middle

1

No

1107

Cutter frame sub assembly

Frame cutter sub assembly

1

No

1108

Cutter frame

Frame,cutter

1

No

1109

Cutter shaft

Shaft,cutter

1

No

1110



1

No

1111

Take-up flapper spring

Take-up flapper spring

1

No

1112

Take-up transmission shaft

Shaft,take-up transmission

1

No

1114

Rotation cutter frame assembly

Frame rotation cutter assembly

1

No

1115

Cutter rotation frame sub assembly

Frame rotation cutter sub assembly

1

No

1116

Cutter rotation frame

Frame,rotation cutter

1

No

1117

Cutter paper guide

Paper guide,cutter

1

No

1118

Rotation frame spacer

Spacer,frame rotation

1

No

1119

Roll paper guide spring

Spring,roll paper guide

1

No

1120

Roll paper guide plate

Plate,roll paper guide

1

No

1121

Manufacturer’s plate

Manufacture’s plate

1

No

1122

Roll paper cover

Cover,roll paper

1

No

1123

Open lever

Lever,open

1

No

1124

Platen rotation frame 2 unit

Frame platen rotation,2 unit

1

No

1125

Platen rotation frame 2

Frame,platen rotation,2

1

No

1126

Nut

Nut

1

Yes

1127

E-ring 2.3

E-ring 2.3

1

No

1128

CBS-TITE, 3X5, F/ZN

C.B.S- TITE,3X5,F/ZN

2

No

1129

Cutter rotation plate

Plate,rotation cutter

1

No

E01

E-ring 3

E-ring,3

9

Yes

E02

E-ring 2.3

E-ring,2.3

5

Yes

E03

E-ring 4

E-ring,4

2

Yes

E04

E-ring 3

E-ring,3

2

Yes

S01

S(O) screw, 3X6

C.P.S.(O) Screw,3X6

8

Yes

S02

S-TITE, 3X5,F/ZN

C.P.SITITE,3X5,F/ZN

8

Yes

S03

CBS screw, 3X6

C.B.S. Screw,3X6

12

Yes

S04

CB screw, 2X2.5, F/ZN

C.B. Screw,2X2.5,F/ZN

1

Yes

S05

CBP-TITE screw, 3X8, F/ZN

C.B.P-TITE Screw,3X8,F/ZN

5

Yes

S06

Screw (P tight)

SCREW(P tight)

1

Yes

S07

CBP-TITE, 3X10, F/ZN

C.B.P-TITE,3X10,F/ZN

2

Yes

S08



3

Yes

S09

CBS-TITE, 3X4, F/ZN

C.B.S-TITE,3X4,F/ZN

5

Yes

Rev. B



Service Manual Name


Qty.

Supplied as a part?

S10

CBS screw, 3X6, F/ZN

C.B.S. Screw,3X6,F/ZN

5

Yes

S11

CBS- TITE, 3X5, F/ZN

C.B.S- TITE,3X5,F/ZN

9

Yes

S12

SPS screw

C.P.S.P.S. Screw

1

Yes

S13

CBS-TITE, 3X4, F/ZN

C.B.S-TITE,3X4,F/ZN

2

Yes

S14

S(O) screw

C.P.S.(O) Screw

1

Yes

S15



1

Yes

W01

Plain washer

Plane washer

1

Yes

W02

Plain washer

Plane washer

1

Yes


Rev. B

EPSON

SEIKO EPSON CORPORATION

Printed in Japan

Epson Tm U220 2b311x

Overview 6h3y3j

More details h6z72

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