Confidential
Service manual
TM-U220 Series
(Type A)
English
404619501
Rev. B
Issued date , ,
Issued by
EPSON
Rev. B i
TM-U220 Type A Service Manual
Confidential
CONFIDENTIALITY AGREEMENT
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THIS DOCUMENT IMMEDIATELY IF YOU DO NOT AGREE TO THESE TERMS.
❏ This document contains confidential, proprietary information of Seiko Epson Corporation or its affiliates. You
must keep such information confidential. If the user 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.
❏ 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.
❏ 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.
❏ 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.
❏ 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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Cautions
❏ No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any
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Seiko Epson Corporation.
❏ The contents of this document are subject to change without notice. Please contact us for the latest information.
❏ While every precaution has been taken in the preparation of this document, Seiko Epson Corporation assumes no
responsibility for errors or omissions.
❏ Neither is any liability assumed for damages resulting from the use of the information contained herein.
❏ Neither Seiko Epson Corporation nor its affiliates 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.
❏ 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.
EPSON
®
and ESC/POS® are registered trademarks of Seiko Epson Corporation
ii Rev. B
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 Panel (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 User’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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TM-U220 Type A Service Manual
Confidential
DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Disassembling the Carriage Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Disassembling the Rotation Frame Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Disassembling the Roll Paper Guide / Roll Paper Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Disassembling the Autocutter Unit / Fixed Blade Holder Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
DIsassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Disassembly and Assembly Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Lubrication Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Chapter 5 Adjustment and Setting
Setting the Installation Position for the Roll Paper Near-End Detector . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Adjusting the Detection Point for the Roll Paper Near-End Detector . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Setting the Paper Roll Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Setting the Autocutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Platen Gap Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Carriage Belt Tension Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Adjust Various Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
How to Confirm the Current Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Adjusting the DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Memory Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Memory Switch Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Chapter 6 Preparation for Shipment
Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
How to Clean the Cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Removing Dirt, Paper Chips, and Dust from Inside the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Appendix Parts List
Reference Number List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
iv Rev. B
Confidential
Revision Table
Revision Pages Description
Rev. A All pages Newly authorized.
Rev. B 1-2 Part names added.
1-3 Control panel (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 v
TM-U220 Type A Service Manual
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.
vi Rev. B
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.
Rev. B vii
TM-U220 Type A Service Manual
Confidential
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.
Rev. B Product Overview 1-1
TM-U220 Type A Service Manual
Confidential
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.
TM-U220 Model Comparison
Note: * Other compatible interfaces, such as USB and Ethernet, are available from the dealer.
** Multilingual support 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.
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.
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 supported
Alphanumeric (ANK) or
multilingual**
Alphanumeric (ANK) or
multilingual**
Alphanumeric (ANK) or
multilingual**
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)
TM-U220 external views
Type B
Type D
Type A
1-2 Product Overview Rev. B
Confidential
Configurations
This TM-U220 is configured by combining features from the list below.
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.
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
Roll paper cover
Control panel
Ribbon cassette cover
Power switch
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Control Panel (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.
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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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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.
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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.
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.
Take-up flange
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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.
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.
Knob
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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 cpi) 3.5 lines/second (at 40 columns, 16 cpi) 4.7 lines/second (at 40 columns, 16 cpi)
Paper feed speed 25 lines/second 25 lines/second 30 lines/ second
Character tables Alphanumeric 95, international 32,
extended 126 x 7
Alphanumeric 95, international 32,
extended 128 x 8
Alphanumeric 95, international 48,
extended 128 x 12
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: 63.34 mm (200 dots x
400 positions)
Left margin: 6 mm
Right margin: 6.5 mm (approx.)
76 mm paper:
Width: 63.34 mm (200 dots x
400 positions)
Left margin: 5.9 mm
Right margin: 6.76 mm
76 mm paper:
Width: 63.34 mm (200 dots x
400 positions)
Left margin: 6.8 mm
Right margin: 5.8 mm
69.5 mm paper:
Width: 57 mm (180 dots x
360 positions)
Left margin: 6.7 mm
Right margin: 5.8 mm
57.5 mm paper:
Width: 47.5 mm (150 dots x
300 positions)
Left margin: 4.2 mm
Right margin: 5.8 mm
Space from autocut to
print start:
Space from manual cut to
print start:
36 mm
Type A, B: 26 mm; Type C, D: 28 mm
27 mm
20.2 mm
27 mm
Type D: 22.1 mm; Type A, B: 34.9 mm
Receive buffer Alphanumeric: 1KB/40 bytes
Multilingual: 512 bytes/40 bytes
Alphanumeric: 1KB/40 bytes
Multilingual: 512 bytes/40 bytes
Alphanumeric: 4KB/40 bytes
Multilingual: 4KB/40 bytes
NV bit image memory Alphanumeric: none
Multilingual: none
Alphanumeric: none
Multilingual: none
Alphanumeric: 128KB
Multilingual: 128KB
NV user memory Alphanumeric: none
Multilingual: none
Alphanumeric: none
Multilingual: none
Alphanumeric: 8KB
Multilingual: 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: 170 x 288 x 183 mm
{6.7 x 11.3 x 7.2"}
Type B: 170 x 253 x 148 mm
{6.7 x 10 x 5.8"}
Type C: 158 x 295 x 145 mm
{6.2 x 11.6 x 5.7"}
Type D: 158 x 235 x 125 mm
{6.2 x 9.3 x 4.9"}
Type A: 160 x 295 x 160 mm
{6.3 x 11.6 x 6.3"}
Type B: 160 x 248 x 150 mm
{6.3 x 9.8 x 5.9"}
Type D: 160 x 248 x 133 mm
{6.3 x 9.8 x 5.2"}
Type A: 160 x 286 x 157.5 mm
{6.3 x 11.3 x 6.2"}
Type B: 160 x 248 x 138.5 mm
{6.3 x 9.8 x 5.5"}
Type D: 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.
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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
Confirming the User’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.
Assembly/disassembly
Confirm the right status
Troubleshooting
If no problem is found, the product is considered to be
normal, and can be sent to the user’s environment.
Adjustment/setting
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Printer Status Checks
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 panel. See page 2-12
for information about control panel 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.
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.)
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Printer Status Print
Normal printout result Explanation
➀
➁
➂
➃
➄
➅
7
➇
9
Main program version
Boot program version
➁ Interface classification
Interface information
➂ Receive buffer capacity *1)
*1) Differs depending on DIP SW1-2.
➃ Busy release conditions for receive buffer full *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.)
➄ Busy condition *3)
*3) Differs depending on DIP SW1-8.
➅ Resident character *4)
*4) Performs a multilingual CG judgment when printing resident
characters.
7 Paper roll width *5)
*5) Differs depending on the paper roll width set with the
memory switch (customized value).
➇ Dot spacing between characters *6)
*6) Differs depending on DIP SW2-1.
9 Characters per line *7)
*7) Differs depending on the paper roll width and dots
between characters.
Autocutter unit installed/not installed *8)
*8) Differs depending on DIP SW2-2.
Note:
➀ Version information
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Roll Pattern
Normal print result Explanation
Paper feeds 2 lines.
Paper is fed to a position where the user can see
the ending message at left
.
Black (6 lines)
Red (6 lines)
Red (6 lines)
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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 password is required. Refer to the manual
supplied with the service utility for the password.
Start up of the service utility
When you start the service utility, the following communication conditions dialog box appears.
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.
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.
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❏
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.
❏
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. Click Next to proceed.
1. Select a printer sequence
to execute.
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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.
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.
2. Click to start the All Function Test.
1. Select the test elements.
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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.
3. Click If you want to skip the test.
1. Indicate the sensor to test.
2. Follow the message to operate
the printer.
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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 Explanation
➀
➁
➂
➃
➄
➅
➆
➇
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:
*1) When the serial number is not registered 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.
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Status Print
Normal print result Explanation
➀
➂
➄
➅
➁
➃
➆
➇
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:
*1) When the serial number is not registered 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.
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Normal print result Explanation
➀
➂
➄
➅
➁
➃
➆
➇
➈
➀ Prints program version.
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.)
➄ Prints defined bit image data in NV memory. *1)
➅ Prints defined data in NV user memory. *2)
➆ Prints information on EPSON NV memory. It is
changeable with the printer status. *3)
➈ Prints definition of command default values.
Note:
*1, 2) Data defined by a user must be backed up
and restored.
Main program version is printed.
Boot program version is printed.
Original program version is printed.
Manufacturer name
Model name
Product serial no.
➇ Prints defined data for the space page.
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Report Print
Running a Self-test
The steps below describe how to run a self-test by operating the control panel.
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.
Normal print result Explanation
➀
➂
➄
➅
➁
➃
➆
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)
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 pass one of the tests for a sensor” on
page 3-18.)
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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.
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.
Roll paper cover
Tab
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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.
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.
Autocutter unit
Lever
Hole
Knob
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