Epson TM U200D - B/W Dot-matrix Printer Service manual

Confidential
Service manual
TM-U200 Series (Type B)
Issued date
,
,
Issued by
English
400852401
EPSON
EPSON
SEIKO EPSON CORPORATION
Printed in Japan
Confidential
TM-U200 Series (Type B) Service Manual
Revision Table
Rev.
Page
Description
Rev. A
all pages
Newly authorized
Rev. B
1-1,
1-20,
2-13,
2-14,
2-15,
2-20,
2-23,
2-24,
2-25,
A-6,
A-7,
A-8,
A-9,
A-13,
A-14,
A-15,
A-16,
A-17,
A-22,
A-23,
Addendum 1
Revision due to main circuit board modification (See Addendum 1 for detail
description).
5-45,
5-46,
A-22,
A-23,
Addendum 2
Revision due to lower plate modification and deletion of ROM spacer (See
Addendum 2 for detail description).
5-37,
5-38,
A-22,
A-23,
Addendum 3
Revision due to release lever addition (See Addendum 3 for detail description).
All pages
Printed “Confidential” mark
Revision Table i
Confidential
ii Revision Table
Confidential
TM-U200 Series (Type B) Service Manual
CONFIDENTIALITY AGREEMENT
BY USING THIS DOCUMENT, YOU AGREE TO ABIDE BY THE TERMS OF THIS AGREEMENT. PLEASE RETURN
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 ON 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 on the document.
❏
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.
❏
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.
❏
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.
❏
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 theU. 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.
Cautions
EPSON® and ESC/POS® are registered trademarks of Seiko Epson Corporation
Rev. B
i
Confidential
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.
CAUTION:
Observe cautions to avoid minor injury to your self, damage to your equipment, or loss
of data.
Note:
Notes have important information and useful tips on the operation of your equipment.
Safety Precautions on Maintenance/Repair/Inspection
WARNING:
Be sure to use the designated type of fuse for the circuit board. Use of a different type
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 thunder storm.
ii
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
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.
Parts on the circuit board may become hot during operation. Therefore, wait
approximately 10 minutes after turning the power off before touching them.
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.
Do not use an alcohol, benzine, thinner, trichloroethylene, or ketone-based solvent to
clean the parts. This type of solvent may damage the plastic and rubber parts.
Wipe off any dirt with a dry or slightly moist cloth. Be sure to remove the power cord
from the outlet at this time.
Note that the print head and the paper feed motors become very hot during normal
operation, creating the danger of burn injury. Be sure to wait for about 10 minutes after
turning printer power off before begining the maintenance, repair, or inspection.
Modular Connector
The following label is visible near the modular connector (drawer kick-out connector) on the
back of this product.
Use modular connector specifically designed for cash drawers for this product. Do not connect
this connector to an ordinary telephone line.
Rev. B
iii
Confidential
CONTENTS
Chapter 1 Features and General Specifications
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Character Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Auto Cutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Paper Roll Supply Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Receive Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Ribbon Cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
External Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Printer Installation Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Main Unit Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Paper Feed Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Carriage Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Print Head Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Home Position Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Paper End Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Paper Roll Near-end Detector (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Power Supply Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Drawer Kick-Out Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
RS-232 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
RS-485 Serial Interface (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
IEEE 1284 Parallel Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
Buttons and Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Panel Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Error Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Printer Operation When an Error Occurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Data Receive Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Buffer Full Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Detectors and Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Hexadecimal Dump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Performing a Hexadecimal Dump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
External Power Supply PS-170 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Chapter 2 Mechanism Configuration and Operating Principles
Printer Mechanism Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Print mechanism unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Print head unit movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Wire movement when a single dot is printed . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Printing a character (9x9 font) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Paper Feed Mechanism Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Paper loading (semi-automatic loading) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
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Confidential
TM-U200 Series (Type B) Service Manual
Paper feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Feed Mechanism Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detection Mechanism Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Home position detection mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper detection mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper roll near-end detection mechanism (optional) . . . . . . . . . . . . . . . . . . . .
Auto-cutter mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Switch Mechanism Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switching from Black to Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Releasing from Red to Black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Circuitry Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Various detector circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host interface circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drawer kick-out drive circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIP switch read circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer Mechanism Driver Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print head driver circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Carriage motor driver circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto-cutter driver circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
2-7
2-8
2-9
2-9
2-10
2-10
2-10
2-11
2-11
2-11
2-12
2-12
2-16
2-16
2-17
2-18
2-21
2-22
2-22
2-23
2-26
2-26
2-27
2-28
Chapter 3 Handling and Maintenance
Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Use Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ribbon Cassette Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Paper Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Ribbon Cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Jammed Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Power Switch Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tool List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3-1
3-1
3-1
3-2
3-2
3-5
3-7
3-12
3-13
3-13
3-14
3-14
3-14
3-14
3-15
3-15
Chapter 4 Troubleshooting
Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initiating the Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self-test Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ending the Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Types and Countermeasures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rev. B
4-1
4-1
4-1
4-1
4-2
4-9
4-15
v
Confidential
Chapter 5 Disassembly, Assembly, and Adjustment
Small Part Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Removing the fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Removing the print head unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Removing the auto-cutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Removing the main circuit board assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Sub-assembly A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Paper feed frame unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Main Assembly 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Ribbon switch lever, ribbon release spring, ribbon release lever, ribbon intermediate gear, ribbon transmission
gear, ribbon take-up assembly, and ribbon drive plate assembly . . . . . . . . . 5-12
Main Assembly 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Tension plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Main Assembly 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Paper feed frame assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Main Assembly 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Carriage motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Main Assembly 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Carriage sub assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Main Assembly 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Carriage shaft assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Main Assembly 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Adjustment roller shaft holder assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Main Assembly 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Carriage guide shaft assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Main Assembly 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Belt tension spring assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Main Assembly 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Sensor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Main Assembly 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Carriage motor heat sink assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Main Assembly 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Print head FPC assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Main Assembly 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Print head unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Main assembly 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Left cover fixing plate and right cover fixing plate . . . . . . . . . . . . . . . . . . . . . . 5-24
Main Assembly 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Ribbon frame earth plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Main Assembly 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Ribbon frame assembly, ribbon frame spring, and ribbon frame fixing plate 5-26
Main Assembly 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Thumb-screw and head cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Main Assembly 1 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
Lower cutter plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
Main Assembly 2 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
Upper plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
Main Assembly 3 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Main circuit board assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Main Assembly 4 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Inserting the cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Main Assembly 5 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Lower case assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Main Assembly 6 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
Manual cutter assembly and auto-cutter fixing plate . . . . . . . . . . . . . . . . . . . . 5-35
vi
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 7 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37
Auto-cutter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37
Main Assembly 8 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40
Paper roll receive rollers, upper case, guide roller, and switch panel assemblies 5-40
Main Assembly 9 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43
Interface circuit board assembly and connector plate . . . . . . . . . . . . . . . . . . . 5-43
Main Assembly 10 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45
Lower plate, ROM cover, and rubber foot assembly . . . . . . . . . . . . . . . . . . . . 5-45
Main Assembly 11 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46
Main cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46
Main Assembly 12 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-47
Near-end detector assembly (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-47
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50
Platen gap adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50
Appendix
RS-485 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
XON/XOFF Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Format When Using RS-485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-232 Serial Interface Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IEEE 1284 Parallel Interface Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-485 Serial Interface Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-232 Serial Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IEEE 1284 Parallel Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-485 Serial Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer Mechanism Unit Overall Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . .
Case Unit Overall Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Case Unit Overall Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer Mechanism Unit Lubrication Points Diagram . . . . . . . . . . . . . . . . . . . . . . .
Case Unit Lubrication Points Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-1
A-4
A-4
A-6
A-6
A-10
A-11
A-12
A-13
A-13
A-18
A-19
A-20
A-21
A-22
A-23
A-24
A-25
Addendum 1 Main Circuit Board Types and Maintenance
Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
EP-ROM equipped main circuit board no longer used in ANK font model 1
Number of switches in DIP switch set DSW2 changed in ANK font model 1
Function assignment of 8-switch DIP switch set DSW2 changed in ANK font model 2
Servicing Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Using the correct main circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Using the correct DIP switch setting table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Using the correct circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Addendum 2 Lower Plate Change and ROM Spacer Abolition
Description of Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Servicing Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Addendum 3 Auto-Cutter Release Tab Change
Description of Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Assembly Procedure Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Spare Parts Supply Unit Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rev. B
vii
Confidential
Introduction
TM-U200 Series (Type B) printers are one-station printers for ECR and POS use that can print the results of weighing
or measuring. The main features of the TM-U200 Series (Type B) printers are the following:
❏
High-speed printing through logic-seeking control
❏
Excellent reliability and long life resulting from the use of two stepping motors, one for moving the carriage and
one for paper feeding
❏
Flexible paper feed setting permits printing in accordance with any user-defined format
❏
Command protocol based on ESC/POS, a widely used standard
❏
Built-in drawer kick-out interface provides capability to drive two drawers
❏
Selectable character fonts (7 x 9, 9 x 9)
❏
Semi-automatic paper loading capability
❏
AC adapter (included) provides compact power supply
❏
Compact and light in weight
❏
Automatic Status Back (ASB) function to automatically send printer status changes
❏
Auto-cutter euipped
❏
Two-color printing: black and red are selectable.
viii Introduction
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Chapter 1
Features and General Specifications
FEED button
ERROR LED
Power switch
POWER LED
PAPER OUT LED
(PAPER OUT/PRESS FEED)
PROM
Power supply connector
Drawer kick-out connector
Frame ground screw
DIP switch bank 1
Interface connector
Frame ground screw
DIP switch bank 2 (*)
(*) There are three kinds of DIP
switch bank 2. See Addendum
1 of this manual for more
details.
Figure 1-1 TM-U200 Series (Type B) appearance
Rev. B
Features and General Specifications 1-1
Confidential
Features
Printing Specifications
Printing method:
Serial impact dot-matrix
Head wire configuration:
9-pin serial type
0.353 mm
(0.014")
0.29 mm (0.01")
(wire diameter)
0.317 mm (0.012")
Figure 1-2 Dot configuration
Dot pitch:
0.353 mm (1/72")
Dot wire diameter
0.29 mm (0.01")
Printing direction:
Bidirectional with logic seeking
Printing width:
63.34 mm (2.49")
Line feed:
4.233 mm (1/6"): default setting
Programmable in units of 1/144 inch by using commands.
Paper feed method
Friction feed
Paper feed speed:
Approximately 4.17 inches/second (25 lines/second) during
continuous paper feeding
Characters per line:
See the table on the next page.
Characters per inch:
See the table on the next page.
Total dot count (horizontal
direction)
7 x 9 font: 400 half-dot positions per line
9 x 9 font: 400 half-dot positions per line
Print speed
Approximately 3.5 lines/second (40 columns, 16 cpi)
Approximately 6.4 lines/second (16 columns, 16 cpi)
NOTE:If the print duty ratio is too high, the operation of the print head is stopped by the duty limit. In such
circumstances, the print speeds shown above cannot be guaranteed.
cpi = characters per inch.
1-2 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Character dimensions, characters per inch, characters per line
Character Structure
Horizontal x Vertical
Character
Structure
Character Set
Character
Dimensions
WxH
Dot Spacing
Between
Characters
Characters Per
Line (cpl)
Characters Per
Inch (cpi)
7x9
ANK
1.2 x 3.1 mm
(.047 x .122")
3 half dots
40
16
Graphics
1.7 x 3.1 mm
(.070 x .122")
0
40
16
ANK
1.6 x 3.1 mm
(.063 x .122")
3 half dots
33
13.3
Graphics
2.0 x 3.1 mm
(.079 x .122")
0
33
13.3
ANK
1.2 x 3.1 mm
(.047 x .122")
2 half dots
42
17.8
Graphics
1.6 x 3.1 mm
(.063 x .122")
0
42
17.8
ANK
1.6 x 3.1 mm
(.063 x .122")
2 half dots
35
14.5
Graphics
1.9 x 3.1 mm
(.075 x .122")
0
35
14.5
9x9
7x9
9x9
NOTE: The default font is 7 x 9; the dot spacing between characters is either 3 half dots or 2 half dots, depending on
the setting of DIP switch 2-1.
Character Specifications
Character sets:
Alphanumeric: 95
International: 32
Graphics: 128 x 8 pages
Character structure:
7 x 9 with 400 half-dot positions per line
9 x 9 with 400 half-dot positions per line
1.24 mm (0.049")
1.59 mm (0.063")
0.353 mm
(0.014")
2.4 mm
(0.094")
3.1 mm
(0.122")
0.159 mm (0.006")
Figure 1-3 Character size (7 x 9 font example)
Rev. B
Features and General Specifications 1-3
Confidential
Paper
Paper types:
Paper roll:
Paper roll width:
76 ± 0.5 mm (2.99 ± .020")
Paper roll maximum
diameter:
83 mm (3.27")
Paper roll core:
Unless there is an optional near-end detector, you cannot use a
paper roll with the core and paper glued together.
Normal paper:
Thickness:
Weight:
Pressure-sensitive paper
Original sheet + up to 1 copy sheet
Thickness:
1 sheet: 0.05 to 0.08 mm (.0020 to .0031")
Total thickness: 0.2 mm (.0079") or less
Recommended paper: Mitsubishi - carbonless paper (blue)
Top and middle sheets: N40Hi
paper thickness: 0.06 mm (.0024")
weight: 47.2 g/m2 (12.6 lb)
Bottom sheet:
N60
paper thickness: 0.08 mm (.0031")
weight: 68.0 g/m2 (18.1 lb)
Plain paper or pressure-sensitive paper
1 sheet: 0.06 to 0.085 mm (.0024 to .0034")
52.3 to 64 g/m2 (13.9 to 17 lb)
(45 to 55 kg/1000 sheets/1091 x 788)
Cutting position (auto-cutter)
Cutting position (manual cutter)
27 mm (1.063")
20.2 mm (0.79") (*1)
(*2)
63.34 mm (2.49")
Maximum of 200 dots, 400 positions
[6.76 mm (0.27")]
[5.9 mm (0.23")]
76 mm (2.99")
Figure 1-4 Printing area
(*1) This dimension shows the distance from the manual cutter to the print position.
(*2)Values for the printing area are calculated (between dot centers) with the wire diameter (0.29 mm [.011"]).
1-4 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Auto Cutter
Partial cut is executed by a command. (A partial cut leaves one point uncut.)
Paper Roll Supply Device
Supply device:
Drop-in loading
Receive Buffer
ANK font model: Either 1000 bytes or 40 bytes, selectable by DIP switches.
Multilingual fornt model: Either 512 bytes or 40 bytes, selectable by DIP switches.
Electrical Specifications
Power supply
One of the following five AC adapters is included, depending on
the specifications:
AC adapter specifications
Power consumption
(except when driving
drawer kick-out):
Settings and
shipment
Input voltage range
Model
name
Japan
100 V ± 10%, 50/60 Hz
PA-6508
North America
120 V ± 10%, 60 Hz
PB-6509
Europe (Germany)
230 V ± 10%, 50 Hz
PB-6510
Europe (U.K.)
230 V ± 10%, 50 Hz
PA-6511
Australia
240 V ± 10%, 50 Hz
PA-6513
Operating: Mean average 43 W
Standby: Average 6 W
Ribbon Cassette
Ribbon cassette specifications
Model number
Color
Ribbon life (*1)
ERC-38 (P)
Purple
4 million characters (with continuous printing at 25° C [77° F])
ERC-38 (B)
Black
3 million characters (with continuous printing at 25° C [77° F])
ERC-38 (B/R)
Black and
Red
Black: 1.5 million characters (with continuous printing at 25° C [77° F])
Red: 750,000 characters (with continuous printing at 25° C [77° F])
(*1) Ribbon life is based on the following conditions:
Character font:7 x 9 font (with descenders)
Print pattern:ASCII 96-character rolling pattern. See the specification published by EPSON for the print
pattern example.
NOTE: Malfunctions and other problems may occur if a ribbon cassette other than the specified one is used.
Rev. B
Features and General Specifications 1-5
Confidential
External Dimensions and Weight
Height:
150 mm (5.91")
Width:
160 mm (6.30")
Depth:
248 mm (9.76")
Weight:
Approximately 2.5 kg (5.5 lb)
Color:
EPSON standard gray
Environmental Specifications
Temperature:
Operating: 0° to 50° C (32° to 122° F)
At 34° C (93° F) or higher, there are humidity restrictions;
see the figure below.
Storage: –10° to 50° C (14° to 122° F), except paper and ribbon
Humidity:
Operating: 10% to 90% RH (non-condensing)
Storage: 10% to 90% RH (non-condensing), except paper and ribbon
34° C (93° F), 90%
90
Relative Humidity [% RH]
80
40° C (104° F), 65%
60
Operating Temperature Range
40
50° C (122° F), 35%
20
10
0
0
10
20
30
40
50
Environmental Temperature
Figure 1-5 Operating temperature and humidity range
Vibration resistance:
When packed:
Frequency: 5 to 55 Hz
Acceleration: 2 G
Sweep: 10 minutes (half cycle)
Duration: 1 hour
Directions: x, y, and z
1-6 Features and General Specifications
Rev. B
Confidential
Impact resistance:
TM-U200 Series (Type B) Service Manual
When packed:
Package: EPSON standard package
Height: 60 cm (23.62")
Directions: 1 corner, 3 edges, and 6 surfaces
When unpacked:
Height: 5 cm (1.97")
Directions: Lift one edge and release it (for all 4 edges)
Reliability
Life
Mechanism:
7,500,000 lines (See the TM-U200 Series (Type B) Specification for
the print color switching number.
Print head:
150 million characters (using an average of 2 dots/wire per
character.) (The print pattern is shown in the TM-U200 Series
(Type B) Specification in Figure A-1.)
Auto cutter:
800,000 cuts
End of life is defined as the point at which the printer reaches the
beginning of the wear out period.
MTBF
180,000 hours
Failure is defined as a random failure occurring within the time of
the random failure period.
MCBF
18,000,000 lines
This is an average failure interval based on failures relating to
wear out and random failures up to the life of 7,500,000 lines.
Printer Installation Position
Install the printer horizontally. Make sure it does not tilt more than 15°. The printer must also be
installed so that it does not move or vibrate during paper cutting or the drawer kick-out
operation. Fastening tape is available as an option.
Rev. B
Features and General Specifications 1-7
Confidential
Hardware Configuration
Paper end detector
Print head unit
Paper feed motor
Home position sensor
Carriage motor
Paper roll near-end detector (optional)
Interface circuit board
Main circuit board
Figure 1-6 TM-U200 Series (Type B) main unit configuration
1-8 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Unit Specifications
Paper Feed Motor
Type:
4-phase, 48-polarity, PM-type stepping motor
Drive voltage:
24 VDC ± 10%
Winding resistance:
58 Ω ± 2.9 Ω at 25° C (77° F), per phase
Current consumption:
Peak: 1.1 A in worst case
Average: 200 mA at 24 VDC, 25° C (77° F), 600 pps
350 mA maximum
Carriage Motor
Type:
4-phase, 48-polarity, PM-type stepping motor
Drive voltage:
24 VDC ± 10%
Winding resistance:
39.5 Ω ± 1.9 Ω at 25° C (77° F), per phase
Current consumption:
Peak: 1.5 A maximum
Average: 400 mA at 24 VDC, 25° C (77° F), 952 pps
600 mA maximum
Print Head Unit
Number of solenoids:
9
Winding resistance:
19.2 Ω ± 5% at 25° C (77° F), per phase
Drive voltage:
24 VDC ± 10%
Home Position Sensor
Type:
Photo sensor
Voltage:
5 VDC ± 5%
Output level:
LOW when the carriage home position is detected
Rev. B
Features and General Specifications 1-9
Confidential
Paper End Detector
Type:
Microswitch
Voltage:
5 VDC ± 5%
Output level:
High when paper end is detected
Paper Roll Near-end Detector (Optional)
Type:
Microswitch
Voltage:
5 VDC ± 5%
Output level:
Low when a paper near-end is detected
Connectors
Frame ground
screw
Interface
connector
Frame ground
screw
Drawer kick-out Power supply
connector
connector
Figure 1-7 Connector panel (serial interface)
Frame ground Interface Frame ground Drawer kick-out Power supply
connector
connector
screw
connector screw
Figure 1-8 Connector panel (parallel interface)
Interface Connector
See the interface section.
1-10 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Power Supply Connector
This connector is used to connect the printer to an external power source.
Pin assignments:
See the table below.
Power supply connector pin assignments
Pin Number
Signal Name
1
+ power supply
2
GND
3
NC
Shell
Frame GND
2
3
1
NOTE:Be sure to ground the frame ground (FG) screw on the board at the bottom of the unit. Ground wire terminal
hole diameter: 3.2 mm (.13"). Ground wire thickness: AWG 18 or equivalent.
Drawer Kick-Out Connector
A pulse specified by the ESC p command is output to the drawer kick-out connector. The host
can confirm the status of the input signal by using the GS a, GS r, or DLE EOT commands.
Drawer kick-out connector pin assignments
Pin Number
Signal name
Direction
1
Frame GND
—
2
Drawer kick-out drive signal 1
(See "Drawer kick-out drive signal," below.)
Output
3
Drawer open/close signal
(See "Drawer open/closed signal," below.)
Input
4
+24 VDC
—
5
Drawer kick-out drive signal 2
(See "Drawer kick-out drive signal," below.)
Output
6
Signal GND
—
Drawer open/closed signal
The host computer can check the drawer open/closed status with the DLE EOT, GS a, and GS r
commands.
Input signal level:
LOW = 0 V
HIGH = 2 to 5 V (at connector pin 3)
Rev. B
Features and General Specifications 1-11
Confidential
Drawer kick-out drive signal
Output signal:
Voltage = Approximately 24 VDC
Current = 1 A or less
Output waveform:
Outputs the waveforms in Figure 1-8 to pins
2 and 5 of the connector. t1 (ON time) and t2
(OFF time) are specified by ESC p.
CAUTION:
To avoid overcurrent, resistance of the drawer kick-out solenoid must be 24 Ω or more.
t1 x 2 ms
t2 x 2 ms
Figure 1-9 Drawer kick-out drive signal output waveform
NOTES:
❏ Two driver transistors cannot be energized simultaneously.
❏ The drawer drive duty must be as shown below:
ON time
≤ 0.2
(ON time + OFF time)
❏ Be sure to use the printer power supply (connector pin 4) for the drawer power source.
CAUTION:
Do not connect a telephone line to the drawer kick-out connector; otherwise the printer
and the telephone line may be damaged.
1-12 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Interface
RS-232 Serial Interface
Data transmission:
Serial (compatible with RS-232)
Synchronization:
Asynchronous
Handshaking:
DTR/DSR or XON/XOFF control
Signal levels:
MARK = -3 to -15 V: Logic 1/OFF
SPACE = +3 to +15 V: Logic 0/ON
Baud rates:
4800, 9600 bps
Data word length:
7 or 8 bits
Parity settings:
None, even, odd
Stop bits:
1 or more
Connector:
Female D-SUB 25-pin connector or equivalent
NOTES:
❏ Handshaking, data word length, baud rate, and parity depend on DIP switch settings.
❏ Data transmitted from the printer has 1 stop bit (fixed).
Rev. B
Features and General Specifications 1-13
Confidential
Interface Connector Pin Assignments
RS-232 interface connector pin assignments and functions
Pin number
Signal name
I/O
Function
1
FG
—
Frame ground
2
TXD
O
Transmit data
3
RXD
I
Receive data
4
RTS
O
Same as the DTR signal
6
DSR
I
This signal indicates whether the host computer can receive data. SPACE
indicates the host computer can receive data, and MARK indicates the host
computer cannot receive data. When DTR/DSR control is selected, the printer
transmits data after confirming this signal (except when transmitting data by DLE
EOT and GS a). When XON/XOFF control is selected, the printer does not check
this signal. Changing the DIP switch setting lets this signal be used as a reset
signal for the printer. The printer is reset when the signal remains MARK for
1 ms or more.
7
SG
—
Signal ground
20
DTR
O
1) When DTR/DSR control is selected, this signal indicates whether the printer is
busy. SPACE indicates the printer is ready to receive data, and MARK indicates
the printer is busy. A busy condition can be changed using DIP SW 1-8 as follows:
DIP SW 1-8 status
Off line
Printer
ON
OFF
1. During the period from when power is turned on
(including reset using the interface) to when the
printer is ready to receive data.
BUSY
BUSY
2. During self-test
BUSY
BUSY
3. During paper feeding using the paper FEED button.
—
BUSY
4. When the printer stops printing for a paper-end.
—
BUSY
5. When an error has occurred.
—
BUSY
6. When a temporary abnormality occurs in the
power supply voltage
—
BUSY
7. When the receive buffer becomes full. (See Notes.)
BUSY
BUSY
20
DTR
O
2) When XON/XOFF control is selected:
This signal indicates whether the printer is correctly connected and ready to
receive data. SPACE indicates the printer is ready to receive data. The signal is
always SPACE except in the following cases:
❏ During the period after power on until the printer is ready to receive data.
❏ During self test.
25
INIT
I
Changing DIP switch setting enables this signal to be used as a reset signal for
the printer (see the DIP switch settings in the “Buttons and Switches” section of
this chapter). The printer is reset when the signal remains SPACE for 1 ms or more.
NOTES:
❏ When the remaining space in the receive buffer is 16 bytes, the printer buffer becomes full. This status continues
until the space in the receive buffer increases to 32 bytes.
❏ The printer ignores data received when the remaining space in the receive buffer is 0 bytes.
❏ XON is not transmitted when the receive buffer is full.
1-14 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Switching between on line and off line
The printer does not have an on-line/off-line button. It goes off line under the following
conditions:
❏ Between the time when power is turned on (including reset using the interface) and when
the printer is ready to receive data.
❏ During the self-test.
❏ During paper feeding using the paper FEED button.
❏ Between the time when the printer stops printing for a paper-end and when the on-line
recovery wait time finishes after loading paper (if an empty paper supply is detected by
either the paper roll end detector or the paper roll near-end detector with a printing halt
feature enabled for low paper by ESC c 4).
❏ When an error has occurred.
XON/XOFF transmission timing
When XON/XOFF control is selected, the printer transmits XON or XOFF signals as follows.
DIP SW 1-8 status
Printer status
ON
OFF
XON
transmission
• When the printer goes on line after turning power on or after
reset using the interface.
• When the receive buffer is released from the buffer full state.
• When the printer switches from off line to on line (*1).
• When the printer recovers from an error through a command.
Transmission
Transmission
------Transmission
Transmission
Transmission
Transmission
Transmission
Transmission
XOFF
transmission
• During an error condition.
• When the receive buffer becomes full (*2).
Transmission
----
Transmission
Transmission
(*1)XON is not transmitted when the receive buffer is full.
(*2)XOFF is not transmitted when the receive buffer is full.
NOTE:The XON code is 11H and the XOFF code is 13H.
Rev. B
Features and General Specifications 1-15
Confidential
Serial interface connection example
Host
Printer
TXD
RXD
DSR
DTR
CTS
RTS
RXD
TXD
DTR
DSR
FG
FG
SG
SG
NOTES:
❏ Set handshaking so that transmitted data can be received.
❏ Transmit data to the printer after turning on the power and initializing the printer.
RS-485 Serial Interface (option)
Refer to the Appendix for details.
IEEE 1284 Parallel Interface
Complies with the standard described in the IEEE 1284 specification by the Institute of Electrical
and Electronic Engineers, Inc.
Specification
Data transmission:
8-bit parallel
Synchronization:
Externally supplied STROBE signals
Handshaking:
ACK and BUSY signals
Signal levels:
TTL-compatible
Connector:
57RE-40360-830B (DDK) or equivalent (IEEE 1284 Type B)
Reverse communication
(Printer to host):
Nibble or byte mode
Reverse Mode (Data Transmission from Printer to Host)
Status data transmission from the printer to the host occurs in nibble or byte mode. These modes
allow data transmission from the asynchronous printer under control of the host. Data
transmissions in nibble mode are made via the existing control lines in units of four bits (a
nibble). In byte mode, data transmissions proceed by making the eight-bit data lines
bidirectional. Both modes fail to proceed concurrently in compatibility mode, causing half
duplex transmission. The IEEE 1284 nibble/byte modes are under development in draft form
and may be subject to change.
1-16 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Interface Connector Pin Assignments
IEEE 1284 interface connector pin assignments and functions
Pin number
Source
Compatibility Mode
1
Host
Strobe
Host Clk
Host Clk
2
Host/Ptr
Data0 (LSB)
Data0 (LSB)
Data0 (LSB)
3
Host/Ptr
Data1
Data1
Data1
4
Host/Ptr
Data2
Data2
Data2
5
Host/Ptr
Data3
Data3
Data3
6
Host/Ptr
Data4
Data4
Data4
7
Host/Ptr
Data5
Data5
Data5
8
Host/Ptr
Data6
Data6
Data6
9
Host/Ptr
Data7 (MSB)
Data7 (MSB)
Data7 (MSB)
10
Printer
Ack
PtrClk
PtrClk
11
Printer
Busy
PtrBusy/Data3,7
PtrBusy
12
Printer
PError
AckDataReq/
Data2,6
AckDataReq
13
Printer
Select
Xflag/Data1,5
Xflag
14
Hostr
AutoFd
HostBusy
HostBusy
15
NC
ND
ND
16
GND
GND
GND
17
FG
FG
FG
Logic-H
Logic-H
Logic-H
GND
GND
GND
18
Printer
19-30
Nibble Mode
Byte Mode
31
Host
Init
Init
Init
32
Printer
Fault
DataAvail/Data0, 4
DataAvail
GND
ND
ND
33
34
Printer
DK_STATUS
ND
ND
35
Printer
+5V
ND
ND
36
Host
SelectIn
1284-Active
1284-Active
NOTES:
❏ Overscored signal names are LOW active signals.
❏ If a host does not provide for the signal lines listed above, two-way communication fails.
❏ For interfacing, signal lines must use twisted pair cables with the return sides connected to signal ground level.
❏ Interfacing conditions must all be based on the TTL level to meet the characteristics described below. In
addition, both the rise and fall time of each signal must be 0.5 ms or less.
❏ Data transmission must not ignore the ACK or BUSY signal. An attempt to transmit data with either the ACK or
BUSY signal ignored can cause lost data. (Data transmissions to the printer must be made after verifying the ACK
signal or while the BUSY signal is at a LOW level.)
❏ Interface cables should be as short in length as possible.
NC: Not Connected
ND: Not Defined
Rev. B
Features and General Specifications 1-17
Confidential
Reception of status from the printer through the bidirectional parallel interface
In bidirectional parallel interface operation, printer status transmission is available using the
two-way communication facility of the IEEE 1284-compatible nibble/byte modes. In this case,
unlike in RS-232 serial interface operation, real-time interruptions from the printer to the host
are disabled, and so you must pay attention to the following.
❏ The maximum capacity of the printer’s internal buffer is 100 bytes (except ASB status).
Status signals exceeding this capacity are discarded. To prevent possible loss of status, the
host must be ready for data reception (Reverse Mode).
❏ When ASB is used, the host is preferably in the wait state for data reception (Reverse Idle
Mode). When this state is not available, the host enters Reverse Mode to continually monitor
data presence.
❏ When ASB is used, preference is given to ASB status for transmission over other status
signals. Any accumulated ASB status signals left for transmission from the last to the newest
ASB status transmissions are transmitted together at one time as one ASB status showing the
presence of change, followed by the latest ASB status.
Example: In the normal (wait) state, the ASB status is configured as follows:
First Status
Second Status
Third Status
Fourth Status
0001 0000
0000 0000
0000 0000
0000 0000
In a sequence of operations including near end detection and the paper FEED button being
pressed and released, the following pieces of data are accumulated.
First Status
Second Status
Third Status
Fourth Status
➀
0001 0000
0000 0000
0000 0011
0000 0000
Near end
detection.
➁
0101 1000
0000 0000
0000 0011
0000 0000
Paper FEED
button is
pressed.
➂
0001 0000
0000 0000
0000 0011
0000 0000
Paper FEED
button is
released.
When ASB status is received following this, a total of eight (8) bytes of ASB will be transmitted
as follows: Accumulated ASB (➀+➁+➂).
Accumulated ASB (➀+➁+➂)
+
The latest ASB (➂)
Fourth Status
First Status
Second Status
Third Status
Fourth Status
0101 1000
0000 0000
0000 0011
0000 0000
First Status
Second Status
Third Status
Fourth Status
0001 0000
0000 0000
0000 0011
0000 0000
1-18 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Notes on setting DIP switch 1-8 to ON
The printer mechanism stops but does not become busy when an error occurs, printing stops for
a paper end, or paper is fed using the FEED button.
When setting DIP switch 1-8 to ON to enable handshaking with the printer, be sure to check the
printer status with GS a and ASB function. In this setting, the default value of n for GS a is 2.
The printer automatically transmits the printer status, depending on on-line/off-line changes.
When using DLE EOT and DLE ENQ, be sure that the receive buffer does not become full.
❏ If the host cannot transmit data when the printer is busy or if an error occurs, DLE EOT and
DLE ENQ cannot be used when printer is busy because the receive buffer has become full.
❏ With a host that can transmit data when the printer is busy, if the printer’s receive buffer
becomes full while the host is sending bit-image data, a DLE EOT or DLE ENQ command
transmitted during sending of bit-image data is processed as bit-image data, not as a
command. Secondly, any data transmitted when the receive buffer is full may be lost.
Example: Check printer status using GS r after transmitting each line of data and use the 1KB
receive buffer. Transmit one line of data so that the receive buffer does not become full.
Buttons and Switches
Power Switch
Type:
Rocker switch
Function:
The power switch turns the power on or off.
Note:
Turn on the power only after connecting the power supply.
Panel Button
The panel button is enabled or disabled by the ESC c 5 command. This button is inactive if it is
disabled.
Feed (FEED) button:
Type: Non-locking push button
Function: Feeds paper based on the line feed amount set by ESC 2
and ESC 3.
Note:
The ESC c 5 command enables or disables the panel button. When disabled, the button does not
function. However, when loading a paper roll, you can feed paper with the FEED button during the
paper loading waiting time if the paper loading waiting time is set by GS z 0. Press the FEED button
again after the PAPER OUT LED starts blinking to return the printer to the on-line state.
Rev. B
Features and General Specifications 1-19
Confidential
DIP Switches
See Addendum 1 of this manual for the description about the DIP switch settings.
Panel LEDs
Power (POWER) LED:
Paper roll near-end
(PAPER OUT) LED:
Green
On:
24 V power supply is stable.
Off:
24 V power supply is not stable.
Red
On:
Paper roll near-end is detected. (*1)
Off:
Adequate paper remains on the paper roll (normal
condition).
Blinking:
Waiting for restart test print on paper roll or for
return to on-line status after automatic paper
feeding.
(*1) The near-end detector is an option.
Error (ERROR) LED:
Red
On:
Off-line (except during paper feeding using the
FEED button and during the self-test).
Off:
Normal operation.
Blinking
Error state. (Refer to “Error types and
countermeasures” in Chapter 4.)
Self-test
The printer has a self-test function that checks the following:
❏ Control circuit functions
❏ Printer mechanisms
❏ Print quality
❏ Control ROM version
❏ DIP switch settings.
1-20 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
See Chapter 4 for instructions on running a self-test.
Error Processing
Printer Operation When an Error Occurs
The printer executes the following operations upon detecting an error:
Serial interface
❏ All mechanical operations stop.
❏ DTR signal is set to MARK (only when DTR/DSR is selected and DIP switch 1-8 is off).
❏ The ERROR LED blinks.
❏ XOFF is transmitted when XON/XOFF control is selected (only when DIP switch 1-8 is off).
Parallel interface
❏ All mechanical operations stop.
❏ The BUSY signal is set to HIGH (only when DIP switch 1-8 is off).
❏ The ERROR LED blinks.
❏ Fault signal is set to LOW.
Data Receive Error
If one of the following errors occurs, the printer prints “?” or ignores the data, depending on the
setting of DIP switch 1-1:
❏ Parity error
❏ Framing error
❏ Overrun error.
Buffer Full Printing
When subsequent data is received after the printer processes one line of data in the print buffer,
the printer automatically prints the processed data and feeds the paper one line.
Detectors and Printing
When the printer detects a paper near-end, it stops or continues printing, depending on the ESC
c 4 command setting. The roll paper detector always halts printing when there is no paper.
Rev. B
Features and General Specifications 1-21
Confidential
Hexadecimal Dump
This function prints data transmitted from the host computer in hexadecimal numbers and in
their corresponding ASCII characters.
Performing a Hexadecimal Dump
1. Turn the printer power off.
2. Set DIP switch 1-2 to on to select 40 bytes for the receive buffer capacity.
3. Turn the power on while pressing the FEED button.
4. Before finishing the initialization of the printer, release the FEED button, then press the FEED
button again. The printer first prints “Hexadecimal Dump” on the paper roll, and prints the
data received thereafter in hexadecimal numbers and their corresponding characters until
the printer is turned off.
NOTES:
❏ “.” is printed if no printable ASCII character corresponds to the data received.
❏ Control commands are printed in bold for emphasis.
❏ During the hexadecimal dump, all commands except DLE EOT and DLE ENQ are disabled.
❏ Insufficient print data to fill the last line can be printed by taking the printer off line. (See “Switching between on
line and off line“ earlier in this chapter.)
Sample hexadecimal dump
Hexadecimal Dump
1B 21 00 1B 26 02 40 40 1B 69 : . ! . . & . @ @.i
1B 25 01 1B 63 34 00 1B 30 31 : . % . c4 . .. 01
41 42 43 44 45 46 47 48 49 4A : ABCDEFGHIJ
Options
❏ Paper roll near end detector (dealer option)
❏ External power supply PS-170
❏ Printer fastening tape (DF-10)
❏ RS-485 serial interface
❏ IEEE 1284 compatible interface board (Bidirectional parallel: factory-installed)
❏ RS-232 compatible interface board (factory-installed)
1-22 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
External Power Supply PS-170
Specifications
100 V, 120 V, or 230 V (specified at time of purchase)
Input Conditions
Input voltage (rating)
90 to 264 V
(100 VAC-10% to 230 VAC + 15%)
108 VAC to 132 V (120 V type)
Frequency (rating)
50 to 60 Hz ± 3 Hz
Input current (rating)
Less than 100 VA
AC switch
None
Energizing LED
None
Output specifications
Output voltage (rating)
24 VDC ± 5%
Output voltage (rating)
2.0 A
Output electric power
(rating)
48 W
Output peak current
4.5 A (within 300 msec)
NOTE: Use only the EPSON PS-170 power supply to avoid damage to the printer and the power supply.
Rev. B
Features and General Specifications 1-23
Confidential
1-24 Features and General Specifications
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Chapter 2
Mechanism Configuration and Operating Principles
Printer Mechanism Operating Principles
The M-U200 printer mechanism mounted in the TM-U200 Series (Type B) is composed of six
mechanisms: print, paper feed, ribbon feed, detector, auto-cutter, and ribbon switch.
Figure 2-1 M-U200
Rev. B
Mechanism Configuration and Operating Principles 2-1
Confidential
Print mechanism unit
The print mechanism unit consists of the parts shown in the figure below.
Carriage shaft
Print head unit
Print head ground
plate assembly
Belt tension
pulley
Paper feed
frame assembly
Carriage
guide shaft
Carriage sub
assembly
Belt
Print head FPC
Carriage motor
assembly
Figure 2-2 Print mechanism unit
2-2 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Print head unit movement
When the carriage motor is driven and the carriage motor gear moves in the direction of arrow B
(forward rotation), the rotational power is conveyed to the belt drive pulley, then the belt. Next,
the carriage sub assembly, which is fixed to the belt, moves in the direction of arrow B.
When the carriage motor gear rotates in the direction of arrow A (reverse rotation), the carriage
sub assembly moves in the direction of arrow A.
Carriage motor gear
Belt drive pulley
Belt
Carriage sub assembly
Figure 2-3 Print head unit movement
Wire movement when a single dot is printed
When the specified print head drive pulse is input to the drive coil, the iron core is magnetized,
and the actuating plate is pulled in the direction of arrow A. This action pushes the wire toward
the platen. When the wire strikes the ink ribbon and paper against the platen, a single dot is
printed. (The “platen” is the portion of the paper feed frame being struck by the wires during
printing.)
When energizing of the drive coil is completed, the wire and actuating plate are returned to the
standby position by the wire return spring and actuating plate spring.
Paper roll
Wire return
spring
Actuating
plate
Ink ribbon
B
A
Wire
Wire guide
Iron core
Platen
Drive coil
Figure 2-4 Printing
Rev. B
Mechanism Configuration and Operating Principles 2-3
Confidential
Printing a character (9x9 font)
A character is printed by energizing the print solenoids with respect to the carriage sub
assembly portion. (The reference timing for the print solenoids is the carriage motor phase
switching signals.) The print head unit moves 0.317 mm (0.012”) (in approximately 1.05 ms) each
time the carriage motor rotates one step (7.5°).
To print the character “2,” print solenoids 2 and 9 are energized first using the same timing as
the carriage motor phase switching signal. Then, print solenoid 8 is energized at TnH (being
delayed a half dot). The remaining print solenoids are energized correspondingly, and the
character “2” is finally printed.
TnH(4)
TnH
Carriage motor phase
switch timing
Print solenoid
Tn
Tn+1
Tn+2
Tn+3
Tn+4
Tn+5
1
2
3
4
5
6
7
8
9
Figure 2-5 Print timing chart
2-4 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Paper Feed Mechanism Unit
The paper feed mechanism unit consists of the parts shown in the figure below. Paper feeding is
performed by driving the paper feed motor (stepping motor).
Paper hold roller
Paper hold
spring
Paper feed
roller assembly
Upper paper guide
Paper feed motor
Paper feed
frame assembly
Paper hold
roller shaft
Paper feed
reduction gear
Figure 2-6 Paper feed mechanism unit
Rev. B
Mechanism Configuration and Operating Principles 2-5
Confidential
Paper loading (semi-automatic loading)
When the paper roll is manually inserted into the paper feed roller, the paper detection switch in
the paper path detects the paper, and semi-automatic loading is executed. (Semi-automatic
loading is the function that automatically feeds paper to the top of the paper feed frame
assembly when a paper roll is inserted in the paper path after the detector detects no paper.)
Paper
Paper feed
frame
Paper hold
plate spring
Upper paper guide
Guide roller
Upper case
Paper hold roller
Paper feed roller
Base frame assembly
Figure 2-7 Paper loading
Paper feeding
Paper feeding is performed by conveying the paper feed motor’s rotational power from the
paper feed motor gear through the paper feed reduction gear, paper feed gear, and paper feed
roller.
Since the paper feed roller and paper hold roller are pressed together, paper advances to the top
of the paper feed frame assembly because of the friction between the rubber of the paper feed
roller and the paper hold roller.
2-6 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
During printing, the paper feed motor is driven after each line is printed, causing the paper to be
fed a specified amount. While the FEED button on the control panel is pressed, the paper feed
motor is driven and the paper roll is fed.
Paper roll
Paper feed roller
Paper feed
motor gear
Paper feed
reduction gear
Paper hold roller
Paper feed gear
Figure 2-8 Paper feeding
Ribbon Feed Mechanism Unit
The ribbon feed mechanism unit consists of the parts shown in the figure below. The printer
feeds the ribbon automatically as the carriage motor rotates.
Ribbon cassette
Ribbon intermediate gear
Ribbon frame
assembly
Ribbon take-up
assembly
Ribbon drive
plate assembly
Ribbon transmission
gear
Figure 2-9 Ribbon feed mechanism unit
Rev. B
Mechanism Configuration and Operating Principles 2-7
Confidential
Ribbon feeding
When the carriage motor rotates forward and the carriage motor gear rotates in the direction of
arrow A, the ribbon intermediate gear and ribbon drive gear rotate in the directions of arrows B
and C, respectively. This causes the ribbon drive plate to move in the direction of arrow D, with
the ribbon intermediate gear shaft in the center, until the ribbon drive gear engages the ribbon
transmission gear.
Since the ribbon transmission gear and the ribbon take-up gear are always engaged, the ribbon
take-up gear rotates in the direction of arrow E.
When the carriage motor rotates in the reverse direction and the carriage motor gear rotates in
the direction of arrow F, the ribbon drive plate moves in the direction of arrow G, disengaging
the ribbon drive gear from the ribbon transmission gear.
Therefore, the ribbon take-up assembly rotates in the direction of arrow E only when the
carriage motor rotates forward. Then the ribbon feed and ribbon hold rollers in the ribbon
cassette, which are engaged with the ribbon take-up assembly, rotate and the ribbon is fed.
Carriage motor gear
F
A
Ribbon intermediate gear
Ribbon feed roller
Ribbon take-up
assembly
B
Ribbon drive
gear
C
D
G
Ribbon take-up
gear
Ribbon drive
plate
E
Ribbon transmission gear
Figure 2-10 Ribbon feeding
2-8 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Detection Mechanism Unit
The detection mechanism unit consists of the home position detection, paper detection, and
near-end detection (optional) mechanisms.
Paper detector
Home position sensor
Figure 2-11 Detection mechanism unit
Home position detection mechanism
The home position detection mechanism consists of the detection protrusion at the left side of
the carriage sub assembly and the sensor sub assembly at the left side of the base frame. It
determines the home position, identifies the carriage position, and detects carriage sub assembly
operation errors.
The sensor sub assembly consists of an LED and photo transistor. When the carriage sub
assembly moves, the detection protrusion passes between the LED and photo transistor and
blocks the optical axis of the photo transistor, changing the output level of the photo transistor.
The change in the output level is used as a signal to detect the movement of the carriage sub
assembly.
Printer side
The light is blocked
The light is
not blocked
+5V
High
A
Low
GND
Signal level at A
Carriage sub assembly detection protrusion
Figure 2-12 Home position detection diagram
Rev. B
Mechanism Configuration and Operating Principles 2-9
Confidential
Paper detection mechanism
The paper detection mechanism is located in the paper path. The mechanism provides paper
end detection for the paper roll and semi-automatic loading by detecting presence or absence of
the paper roll when it is inserted. Since the paper detector switch sub assembly is a micro switch,
it is always ON when the paper roll is loaded.
Paper roll near-end detection mechanism (optional)
The near-end detector assembly consists of the near-end detector lever and a microswitch sensor
and is located on the right side of the lower case. This detector senses the amount of paper left
on the paper roll.
The tip of the near-end detection lever is always pressed against the edge of the paper roll by a
spring inside the microswitch. Therefore, when there is a large amount of paper remaining on
the roll, the near-end detection lever is pressed against the side of the paper roll as depicted by
the solid lines in the figure below. This keeps the microswitch turned on. When the amount of
paper left on the roll decreases below a predetermined amount, the tip of the near-end detection
lever no longer presses against the side of the roll and moves in the direction indicated by the
arrow into the hole in the center of the roll core. This turns the microswitch off and generates a
signal indicating that the paper roll is near its end.
Lower case
Paper roll
Microswitch
Near-end
detection lever
Paper roll center
Figure 2-13 Paper roll near-end detection mechanism
Auto-cutter mechanism
The printer executes a partial cut (one point left uncut) by driving the cutter motor.
When the motor is energized from the standby state, the wormwheel rotates in the direction
indicated by arrow A through the gears from the motor. The resulting motion of the wheel pin
through arm slot C causes the arm to move in direction B. This, in turn, causes slot D to move the
2-10 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
movable blade drive pin in direction E to make the blade execute a cut. If the motor continues
rotating, the wormwheel makes one rotation and it makes the movable blade return to the
standby position and the cutting is finished.
Wormwheel
Wheel pin
Movable blade drive pin
Slot D
Arm
Movable blade
Figure 2-14 Auto-cutter mechanism
Ribbon Switch Mechanism Unit
The ribbon switch mechanism unit consists of the carriage motor assembly, carriage sub
assembly, tension plate assembly, tension belt pulley, home position detector assembly, ribbon
frame assembly, ribbon frame spring, ribbon switch lever, ribbon release lever, and ribbon
release spring. The mechanism unit is placed at the left and right of the carriage sub assembly,
whose position is controlled by the number of carriage motor steps, using the home position as
the reference position. It switches between the black and red ribbon in the ribbon switch and
ribbon release areas outside the printing area.
Switching from Black to Red
When the carriage, sub assembly (print head unit) moves in direction E and reaches the ribbon
switch area, the ribbon switch lever is pushed by the ribbon switch section and moved to
position A (shown by the dotted lines). The ribbon assembly frame is pushed upward by the
push face for the ribbon frame. The detent face for the ribbon switch falls into the ribbon switch
lever hole in the ribbon frame assembly and the ribbon frame assembly is set to the red position.
Releasing from Red to Black
When the carriage sub assembly moves in the D direction and reaches the ribbon release area,
the ribbon release lever is pushed by the ribbon release section. Then portion C pushes the
ribbon frame assembly upward. At this time, the detent face for the ribbon switch is released
from the ribbon switch lever hole in the ribbon frame assembly and the ribbon switch lever is
returned to ribbon switch lever position B (shown by the solid lines) by the spring power of the
Rev. B
Mechanism Configuration and Operating Principles 2-11
Confidential
ribbon release spring. When the carriage sub assembly moves in the E direction, the ribbon
frame assembly and ribbon release lever return to their original positions because of the spring
power of the ribbon frame spring.
Ribbon release range
Ribbon switch range
D
Ribbon release lever
Ribbon switch lever
E
A
B
Ribbon release section
Ribbon switch section
C
Ribbon switch lever hole
Push face for ribbon frame
Detent face for ribbon switch
Figure 2-15 Ribbon Switching
Electrical Circuitry Operating Principles
Hardware Configuration
Component connection diagram
The electrical circuitry of the printer consists of the main circuit board and the interface circuit
boards (UB-S01/RS-232, UB-P02/1284, or UB-S02/RS-485). The figure below is a component
connection diagram for the electrical circuitry.
Figure 2-16 Component connection diagram
2-12 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Circuit board block diagram
The main circuit board unit contains the following electrical circuits:
❏ Power supply circuit
❏ Reset circuit
❏ CPU [internal RAM: 16K bits (2K x 8 bits)]
❏ Memory [EPROM 512K bits (64K x 8 bits) or flash memory (4M bits/8M bits) ]
❏ Operation panel control circuit
❏ Drawer kick-out driver circuit
❏ Print head driver circuit
❏ Paper feed motor driver circuit
❏ DIP switch read circuit
❏ Various detector circuits
❏ Carriage motor driver circuit
❏ Auto-cutter driver circuit
The interface circuit board contains the following:
❏ Reset circuit
❏ Host interface circuit
Rev. B
Mechanism Configuration and Operating Principles 2-13
Confidential
The figure below illustrates the circuit block diagram for the printer.
ROM or
flash
memory
Figure 2-17 Circuit board block diagram
2-14 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Memory Map
The following parts are mapped on the printer memory map:
❏ CPU
❏ EPROM or flash memory(program)
External program memory
0000H
External data memory
0000H
Program,
character
generator area
FFFFH
(For multi-lingual)
Intemal memory
0000H
Can not to be used.
Character
generator area
(1)
FFFFH
64KB
F7A0H
0000H
Internal RAM (2KB)
(For multi-lingual)
FFA0H
Character
generator area
(2)
FFFFH
Internal I/O (96bytes)
FFFFH
64KB
0000H
(For multi-lingual)
Character
generator area
(3)
FFFFH
64KB
●
●
●
0000H
(For multi-lingual)
Character
generator area
(16)
FFFFH
64KB
CPU (Internal memory)
ROM (External program memory)
(512K)
EA
OE
RD
A8−A15
A8−A15
D0−D7
D0−D7
373
D0−D7
ALE
G
OC
C0−O7
(CE)P71
(A16)P75
(A17)P76
(A18)P77
(A19)P93
A0A7
A0−A7
CE
(External data memory) (4M/8M)
WR
A8−A15
D0−D7
OE
A0−A7
CE
A16−A19
WE
Figure 2-18 Memory map
Rev. B
Mechanism Configuration and Operating Principles 2-15
Confidential
Principles of Operation
Power Supply Circuitry
The power supply circuit is compact, uses a switching method, and is attached to the main
circuit board. The following sections describe printer power supply circuitry. The following
table shows power supply voltages and their usages.
Power supply voltage usage
Voltage
Usage
+5 V
Logic circuit
Operation panel circuit
Interface circuit board
Various detector circuits
+24 V
Printer:
Carriage motor
Print head
Drawer kick-out drive
Paper feed motor
Auto-cutter
Filter circuit
The +24 V (24 to 30 V) DC power is input from CN1 through the filter circuit, which reduces
outside noise and keeps internally generated noise from flowing through the +24 V power line.
+24 VDC circuit
The +24 V power from the filter circuit is input to printer power and the +5 V regulator circuit.
Printer power and drawer drive power are the converted +24 ± 1 V that is regulated by series of
regulators (U2 to U4).
+5 VDC control circuit
The +5 V regulator circuit switches the +24 V power input and converts it to +5 V. The switching
regulator IC (U1) switches the +24 V input, smooths it via C1, and outputs +5 V. Power for the
RS-232 is generated by the internal charge-up circuit on the RS-232 interface driver.
Figure 2-19 Power supply circuit diagram
2-16 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Control Circuitry
Reset circuit
The reset circuit is used to prevent the CPU from operating erratically and the print head from
printing unexpectedly during the period of unstable voltage immediately after power is turned
on. To accomplish this, the OUT terminal output (pin 5) of the reset IC (U9) is supplied to the
CPU (U5) as the RESET input signal (pin 21).
The reset IC (U9) monitors the +5 V voltage. When the voltage is 4.5 V or more, reset is released
for the CPU and other components, and the printer becomes ready.
In addition, the C terminal (pin 4) of the reset IC (U9) is connected to the reset signal (DSR signal
or pin 25 input signal) from the host interface via DIP switches 2-3 and 2-4. If a reset signal is
applied to this pin, reset IC output goes LOW and the CPU and other components are reset.
The reset signals differ, depending on the interface specifications:
RS-232 serial interface:
IEEE 1284 parallel interface:
Two signals can be selected (DSR signal or pin 25 input signal).
Pin 25 must be used for the RESET signal. DIP switch 2-4 is fixed
to ON. The printer can be reset with the Init signal (pin 31) from
the host.
Figure 2-20 Reset circuit
Pin 29 of CN4 is the reset signal of the IEEE 1284 parallel interface circuit board.
Rev. B
Mechanism Configuration and Operating Principles 2-17
Confidential
CPU
The printer uses an external 8-bit and internal 16-bit CPU, with an external clock of 14.7 MHz.
The CPU (U5) controls the internal processing of the printer according to the printer control
program written in EPROM (U8).
CPU pin functions
Pin
No.
CPU
Function
Signal Name
I/O
Level
Description
1
P57
ELED/DSW9
I/O
TTL
ERROR LED. LOW: on. DIP SW 2-1 is read when
P100, P101 are LOW.
2
NMI
NMI
I
TTL
Not used (connected to +5 V directly).
3
P100
AC1/DSEL
O
TTL
Auto cutter drive (1) and DIP SW read selection.
LOW: read (read once after initialization).
HIGH: break status when used as motor control
port.
4
P101
AC 2/DSEL
O
TTL
Auto cutter drive (2) and DIP SW read selection.
LOW: read (read once after initialization).
HIGH: break status when used as motor control
port. This pin must change at the same time as
P100.
5
AVCC
AVCC
I
(+5 V)
Analog/digital converter standard voltage.
6
AVSS
AVSS
I
(0 V)
Analog/digital converter GND terminal.
7
P60/AN0
V DTC
I
Analog
+24 V power voltage detection.
8
P61/AN1
HD TEMP
I
Analog
Head temperature detection.
9
P62
NE
I
TTL
Paper roll near-end detection.
LOW: no paper; HIGH: paper present.
10
P63
DK S
I
TTL
Drawer open/closed. LOW: open.
11
P64
RE
I
TTL
Paper roll end detection.
LOW: paper present; HIGH: no paper.
12
P65
HP DTC
I
TTL
Carriage home position sensor.
LOW: home position.
13
P66
DET
I
TTL
Host interface DET.
14
P67
AC RST
I
TTL
Auto cutter position detection (reset).
15
VCC
VCC
I
(+5 V)
Main power terminal.
16
P70
CTS
I
TTL
Host interface CTS. LOW: on.
17
P71
CCE
O
TTL
4M ROM CE signal. LOW: active.
18
P72/RXD1
RD
I
TTL
Host interface RD. LOW: on.
19
P73/CLK1
CLK IN/DTR
I/O
TTL
Host interface CLK IN/DTR.
20
P74/TXD1
SD
O
TTL
Host interface SD. LOW: on.
21
RESET
RESET
I
---
CPU reset input. LOW: on.
22
CLK
CLK
O
TTL
Not used. Open.
23
VSS
VSS
I
(0 V)
GND terminal.
24
X1
X1
I
---
Connected to ceramic vibration generator.
f=14.74 MHz ± 0.5%.
2-18 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
CPU pin functions
Rev. B
Pin
No.
CPU
Function
Signal Name
I/O
Level
Description
25
X2
X2
O
---
Connected to ceramic. f=14.74 MHz ± 0.5%.
26
EA
EA
I
TTL
External memory access. LOW: external ROM
HIGH: internal ROM (CPU mask).
27
P75
P75 (A16)
O
TTL
External memory address A16 (software).
28
P76
P76 (A17)
O
TTL
External memory address A17 (software).
29
P77
P77 (A18)
O
TTL
External memory address A18 (software).
30
P80
WDTOUT
O
TTL
Watch dog timer error (and hardware limited
time power supply switch). LOW: error (reset).
31
P81/INT0
CLK IN/DTR
I
TTL
Connected to pin #19.
32
P82
PF SW
I
TTL
Paper feed switch. LOW: active.
33
ALE
ALE
O
TTL
Address latch enable signal. Latches address
on bus AD0 to AD7 at fall.
34
VCC
VCC
I
(+5 V)
Main power terminal (+5 V).
35
AD0
AD0
3-state
TTL
36
AD1
AD1
Address/data bus.
Transmits address (lower 8 bits) and data.
37
AD2
AD2
38
AD3
AD3
39
AD4
AD4
40
AD5
AD5
41
AD6
AD6
42
AD7
AD7
43
A8
A8
O
TTL
Address bus (address upper 8 bits).
44
A9
A9
45
A10
A10
46
A11
A11
47
A12
A12
48
A13
A13
49
A14
A14
50
A15
A15
51
VSS
VSS
I
(0 V)
GND terminal.
52
P20
CR A/DSW1
I/O
TTL
53
P21
CR B/DSW2
54
P22
CR C/DSW3
Carriage motor driver control 2-2 phase
excitation. All terminals on (LOW): hold.
DIP SW 1-1 to 1-4 read when P100, P101 are
LOW.
55
P23
CR D/DSW4
Mechanism Configuration and Operating Principles 2-19
Confidential
CPU pin functions
Pin
No.
CPU
Function
Signal Name
I/O
Level
Description
56
P90
PF A/DSW5
I/O
TTL
57
P91
PF B/DSW6
58
P92
PF C/DSW7
Paper feed motor driver control 2-2 phase
excitation. All terminals on (LOW): hold.
DIP SW 1-5 to 1-8 read when P100, P101 are
LOW.
59
P93
PF D/DSW8
60
RD
RD
O
TTL
External memory data read signal.
61
WR
WR
O
TTL
External memory data write signal.
62
P32
DKD1
O
TTL
Drawer kick-out driver signal 1. LOW: active.
63
P33
DKD2
O
TTL
Drawer kick-out driver signal 2. LOW: active.
64
P40
HEAD8
O
TTL
Print head #8 driver signal. LOW: on.
65
P41
HEAD7
O
TTL
Print head #7 driver signal. LOW: on.
66
P42
HEAD6
O
TTL
Print head #6 driver signal. LOW: on.
67
P43
HEAD5
O
TTL
Print head #5 driver signal. LOW: on.
68
P44
HEAD4
O
TTL
Print head #4 driver signal. LOW: on.
69
P45
HEAD3
O
TTL
Print head #3 driver signal. LOW: on.
70
P46
HEAD2
O
TTL
Print head #2 driver signal. LOW: on.
71
P47
HEAD1
O
TTL
Print head #1 driver signal. LOW: on.
72
P48
HEAD9
O
TTL
Print head #9 driver signal. LOW: on.
73
P51/T04
+24VCOM SW
O
TTL
Head, auto cutter, drawer kick-out power
switch. LOW: drive.
74
P52
CRCOM SW
O
TTL
Carriage motor power switch. LOW: motor
drive.
75
VCC
VCC
I
(+5 V)
Main power terminal (+5 V).
76
P53
PFCOM SW
O
TTL
Paper feed motor power switch LOW: motor
drive.
77
P54
CLK REQ
O
TTL
HOST interface CLK REQ.
78
VSS
VSS
I
(0 V)
GND terminal.
79
P55
RTS
O
TTL
Host interface RTS. LOW: on.
80
P56
PLED/DSW0
I/O
TTL
PAPER OUT LED. Low: on.
DIP SW 2-2 read when P100 is LOW.
ROM or flash memory
The printer control program and the character generator data are written in ROM (U8) or in
flash memory (U101). The control program controls the basic operations of the printer. All CPU
(U5) operations follow this program.
2-20 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
RAM (CPU internal 2K bit)
RAM is used as temporary storage for the following:
❏ Data received from the interface (receive buffer)
❏ Pattern data to be printed by the print head (printer buffer)
❏ Data used by the CPU (U5) during processing (flags, pointers, etc.).
Operation panel
The operation panel is located on the main circuit board and has 3 LEDs (POWER, ERROR, and
PAPER OUT) and 1 switch (FEED). The POWER LED is driven at the same time as +5 V is
supplied by the power supply circuit. The ERROR and PAPER OUT LEDs are driven by U5.
Switch detection is also executed by the U5.
+5V
U5
P82
P57/T03
P56/INT3/TI2
32 PF SW
1
ELED/DSW9
Q35
80 PLED/DSW0
Q36
R41
R15
GND
SW2
R54
1
2
(POWER)
D13
R55
1
2
(PAPER)
D12
R56
1
(ERROR)
D11
C17
2
Figure 2-21 Operation panel circuit
Various detector circuits
When the printer detects paper, the paper detector at the paper inlet turns the input signal to the
CPU (U5) LOW. This detector also functions as the semi-automatic loading detector.
A home position sensor is provided to detect the print head position. The input signal to the
CPU (U5) becomes LOW when home position is detected.
Rev. B
Mechanism Configuration and Operating Principles 2-21
Confidential
A near-end detector is an option that detects the remaining amount of a paper roll. The input
signal to the CPU (U5) becomes LOW when a paper near-end is detected.
+5V
+5V
Mechanism 1
+5R
Printer mechanism
CN8
R40
R36
U5
RE
P64/AN4
11
P62/AN2
2
R37
R38
P65/AN5
1
REC
12
HP DET
9
HPC
3
R39
R53
4
1
2
3
4
+5V
H.P
GND
R.E
NE
R16
C44
C22
C23
1
2
C46
GND
Mechanism 2
CN11
NEC
1
2
1
2
N.E
1
2
GND
Figure 2-22 Various detector circuits
Host interface circuit
The printer has universal interfaces for connection to the host computer. There are three kinds of
interfaces:
❏ EIA/TIA RS-232 intrface
❏ IEEE 1284 interface
❏ EIA/TIA RS-485 interface
See the interface circuit board diagrams in the Appendix.
Drawer kick-out drive circuit
Activating the DKD1 and DKD2 signals from the CPU (U5) causes transistors Q29 and Q30 to
turn on. This causes transistor array QM5 to turn on, and the drawer drive signal is output. The
drawer status signal DK_S, which indicates whether or not the drawer is open, is input to the
CPU (U5), allowing the host to check the status via the interface.
2-22 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
The +24 V drawer power supply is supplied via the regulator IC (U2), which cuts off the supply
in case of excessive current.
{5 V
+5V
D8
Q29
U5
Q30
QM5
DKD
62
1
CN2
D8
FG
DKD 1P
DKD SW
+24V
{24V
DKD 2P
SG
1
9
8
2
7
6
3
5
4
4
3
2
63
R47
P32
P33
+5V
{5
V
{5 V
+5V
R48
D46
R13
5
R28
1
0
6
Q34
10 P63
D2
C39
U2
VI
VO
G
N
D
+
+
C16
C45
DC 24-30V IN
Figure 2-23 Drawer kick-out drive circuit
DIP switch read circuit
The description about the DIP switch read circuit differs depends on the type of the DIP switch
set 2. See Addendum 1 about the type of the DIP switch set 2.
When the DIP switch set 2 is D-type
There are eight switches in DIP switch set 1 and two switches in DIP switch set 2 that are statusreadable switches. Each signal is input to the CPU. The signal is read as LOW when the switch is
on, and HIGH when the switch is off.
Rev. B
Mechanism Configuration and Operating Principles 2-23
Confidential
CPU (U5) pins 52 to 55, pins 56 to 59, and pins 1 and 80 are also used for the carriage motor drive
circuit, paper feed motor drive circuit, and operation panel control circuit. The pins are used to
read DIP switches temporarily immediately after the printer initialization (or the power is
turned on).
+5V
+5V
(*1)
Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21
Q36 Q35
U5
P20
P21
P22
P23
P90
P91
P92
P93
52
53
54
55
56
57
58
59
DSW1
P57
P56
DSW2
1
2
3
4
5
6
7
8
1
2
D24
D23
D22
D21
D20
D19
D18
D17
D14
D25
1
80
+5V
+5 V
+5V
+5 V
R29
R33
Q39
Q38
P100
3
+5 V
R32
Q28
P101
4
Figure 2-24 DIP switch read circuit
(*1): Resistance between E and B is used for pull-up resistors in the transistor.
2-24 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
When the DIP switch set 2 is AD-type or CD-type
There are eight switches in DIP switch set 1 and four switches in DIP switch set 2 that are statusreadable switches. Each signal is input to the CPU. The signal is read as LOW when the switch is
on, and HIGH when the switch is off.
CPU (U5) pins 52 to 55, pins 56 to 59, and pins 1, 27, 28 and 80 are also used for the carriage
motor drive circuit, paper feed motor drive circuit, operation panel control circuit and address
bus. The pins are used to read DIP switches temporarily immediately after the printer
initialization (or the power is turned on).
+5V
(*1)
QM
101
QM
102
QM
101
QM
102
QM
103
RM
105
QM
103
RM6
QM
109
QM
109
RM6 RM6
U5
P20
P21
P22
P23
P90
P91
P92
P93
52
53
54
55
56
57
58
59
DSW1
DSW2
1
DM101
P57
P56
P75
P76
2
3
4
5
DM102
6
7
DM103
8
DM104
1
2
DM105
5
6
DM106
1
80
27
28
+5 V
R29
QM112
P100
P101
3
3
4
5
QM117
2
1
4
Figure 2-25 DIP switch read circuit
(*1): Resistance between E and B is used for pull-up resistors in the transistor.
Rev. B
Mechanism Configuration and Operating Principles 2-25
Confidential
Printer Mechanism Driver Circuits
Print head driver circuit
The head driver signal is output from CPU (U5) pins 64 to 72. Receiving this drive signal,
transistor array QM1 and QM2 and transistor array QM3 turn On, Off, and drive the head.
Power supply time to the head is adjusted by the supplied power voltage. The CPU (U5)
changes the power voltage between analog and digital at AN0 (pin 7) and decides and controls
the head power supply time according to the internal time table.
To prevent damage to the head during excessive printing, a heat sensor has been installed in the
print head. An analog-digital conversion of the partial pressure difference between the heat
sensor and R18 is carried out in AN1 (pin 8) of the CPU (U5) and the temperature is calculated. If
the head is overheating or working improperly, the ERROR LED flashes.
+5V
+24DT
D50
R46
U5
+5V
R8
P60/ANO
P61/AN1
7
V DTC
8
HD TEMP
C29
+
_ C33
R45
R18
R19
AVCC
AVSS
+5V
5
6
D27
C19
C31
C30
D28
Q4
HEAD1
Q5
D32
HEAD5
Q6
D38
QM1
1
RM3
HEAD6
Q7
D39
P47
P43
P42
P46
P44
P45
P41
P50
P40
71
7
8
5
6
3
4
1
2
HEAD2
8
9
6
7
4
5
67
66
3
2
D40
Q12
70
1
0
D44
HEAD4
68
R20
69
Q8
65
Q13
72
HEAD3
64
Print head unit
CN7
1
FG
2
#2
3
#4
4
#6
5
#8
6
COM (# 4.6.8 )
7
#9
8
C0M ( # 1.2.9 )
9
THEM1
10
THEM2
11
COM (# 3.5.7 )
12
#5
13
#7
14
#1
15
#3
Q9
D41
HEAD7
Q10
D42
QM2
1
RM4
HEAD9
Q11
D43
7
8
5
6
3
4
1
2
HEAD8
D45
8
9
6
7
4
5
3
2
1
0
D7
+24A
Figure 2-26 Print head driver circuit
2-26 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Paper feed motor driver circuit
The paper feed motor (stepping motor) possesses an accurate angle of rotation and permits
speed control. It is driven with 2-2 phase excitation. By turning P53 of the CPU to LOW, +24 V
(labeled +24C signal in the figure below) is applied to the COM terminal of its coil, and it is
made to run by changing P90, P91, P92 and P93 to HIGH and LOW. Its speed is determined by
the speed of changing P90, P91, P92, and P93 between HIGH and LOW. At the end of paper
feeding, P53 of the CPU is once again set to HIGH.
+5V
Q18
+5V
PF A/DSW5
Q19
U5
D35
P90/M10
P92/M12
P91/M11
P93/M13
PF C/DSW7
56
Paper feed motor
58
Q20
QM4
57
CN6
RM2
D33
59
1
PF B/DSW6
Q21
D34
7
8
5
6
3
4
1
2
9
8
7
6
1
1
2
2
3
3
4
PF D/DSW8
D37
4
5
2
3
1
0
4
5
5
(ROTOR)
PF A
PF C
PF COM
PF B
PF D
D10
+24C
+24C
Figure 2-27 Paper feed motor driver circuit
Carriage motor driver circuit
The carriage motor (stepping motor) possesses an accurate angle of rotation and permits speed
control. It is driven with 2-2 phase excitation. By turning P52 of the CPU to LOW, +24 V (labeled
+24B signal in the figure below) is applied to the COM terminal of its coil, and it is made to run
by changing P20, P21, P22, and P23 to HIGH and LOW. Its speed is determined by the speed of
changing P20, P21, P22, and P23 between HIGH and LOW. At the end of paper feeding, P52 of
the CPU is once again set to HIGH.
+24B
+24B
+5V
Q14
CR A/DSW1
Q15
U5
P20/M00
P22/M02
P21/M01
P23/M03
52
D29
CR C/DSW3
D9
54
QM3
53
55
Carriage motor
Q16
D30
CR B/DSW2
Q17
D31
CR D/DSW4
D36
1
CN5
RM1
7
8
5
6
3
4
1
2
9
8
6
7
4
5
(ROTOR)
1
1
CR A
2
2
CR C
3
3
CR COM
4
CR B
5
CR D
4
5
3
2
1
0
Figure 2-28 Carriage motor driving circuit
Rev. B
Mechanism Configuration and Operating Principles 2-27
Confidential
Auto-cutter driver circuit
Rotating the DC motor counterclockwise or clockwise causes the auto-cutter to execute a full cut
or a partial cut (one point left uncut). The driver IC (U6) has a full-bridge configuration and
controls motor rotation, clockwise and counterclockwise.
The position of the auto-cutter blade is detected by the signal connected to P67 of the CPU.
+24V
BLOCK (1)
U6
U5
VM
R57
P100
P101
3
1
4
2
IN1
OUTA
IN2
OUTA
R58
GND
7
3
5
4
GND
TA8428K
+5V
C20
Auto-cutter
R34
CN9
1
2
R35
3
P67
4
1
AC M1
2
AC M2
3
GND
4
AC RES
1
2
C21
GND
Figure 2-29 Auto-cutter drive circuit
2-28 Mechanism Configuration and Operating Principles
Rev. B
Confidential
Rev. B
TM-U200 Series (Type B) Service Manual
Mechanism Configuration and Operating Principles 2-29
Confidential
2-30 Mechanism Configuration and Operating Principles
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Chapter 3
Handling and Maintenance
Handling Precautions
Storage Precautions
❏ Avoid storing the printer in a dusty, humid, or extremely cold area. Also avoid areas that are
exposed to direct sunlight for long periods of time.
❏ For long-term storage, place the printer in a polyethylene bag with anti-rust paper (VCI
paper) and keep it in a dry place.
Use Precautions
❏ Always install a ribbon cassette and load paper before printing.
•
If the paper runs out, be sure to load new paper before you resume printing.
•
If you try to print when there is no paper or no ribbon cassette in the printer, the print
quality of subsequent print jobs may suffer (the printing color may become uneven, or
some dots may not be printed) because of damage to the surface of the platen, printing
wires, or ribbon.
❏ Use a ground wire connected to the frame ground (FG) screw to ground the printer.
❏ Be careful when wiring and connecting the interface, power, and drawer kick-out cables to
avoid subjecting the connectors to excessive pressure.
Paper Handling Precautions
❏ Use only paper that meets the paper specifications described in Chapter 1 of this manual.
❏ If the paper used does not meet the required specifications, any of the following may occur:
Rev. B
•
Print quality deterioration
•
Problems in loading paper
•
Paper jams
•
The ribbon may catch on the paper
•
Ink may stain the paper.
Handling and Maintenance 3-1
Confidential
Ribbon Cassette Handling Precautions
❏ Use only the ribbon cassette specified in Chapter 1 of this manual. If another ribbon cassette
is used, any of the following may occur:
•
Print quality deterioration
•
Printer life may be shortened
•
Ink may leak
•
The ribbon may catch on the print head.
❏ Do not re-ink a ribbon. If a ribbon is re-inked:
•
Print quality could deteriorate due to a malfunction of the print wires
•
Ink may leak.
Replacing the Paper Roll
Note:
Be sure to use roll paper that meets the specifications.
1. Turn on the printer.
2. Open the printer cover.
3. Pull the paper and cut the paper at the dotted line shown in the illustration below.
Printer cover
Cut here
3-2 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
4. Press the FEED button to remove the cut paper.
5. Remove the used paper roll.
6. Using scissors, cut the leading edge of the paper roll perpendicular to the paper feed
direction, as shown below.
7. Insert the paper roll.
Note:
Be sure to note the correct direction that the paper comes off the roll, as shown below.
Rev. B
Handling and Maintenance 3-3
Confidential
8. Open the auto-cutter by pulling the tab up and toward you.
9. Hold both edges of the paper and insert it straight into the paper slot. The printer feeds the
paper automatically.
10. If the paper is not coming out of the manual cutter, press the paper FEED button until the
paper comes out.
3-4 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
11. Cut the paper on the manual cutter.
12. Close the auto cutter by using the tab.
13. Close the printer cover.
14. When the PAPER OUT light blinks, press the paper FEED button to set the printer on line.
Note:
The printer is off line until the PAPER OUT light is off.
Replacing the Ribbon Cassette
CAUTION:
Make sure the printer is not receiving data when you replace a ribbon cassette;
otherwise, data may be lost.
1. Open the printer cover.
2. Open the auto-cutter by pulling the tab up and toward you.
3. Remove the used ribbon cassette.
Rev. B
Handling and Maintenance 3-5
Confidential
4. Turn the ribbon cassette’s knob in the direction of the arrow to take up any slack in the
ribbon.
CAUTION:
Never turn the ribbon cassette’s feed knob in the opposite direction of the arrow
marked on the cassette; otherwise the ribbon cassette may be damaged.
5. Insert the ribbon in the position shown in the illustration below and push the ribbon cassette
until it clicks.
Note:
Make sure that the ribbon is installed between the print head and the platen without wrinkles or
creases.
3-6 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
6. Turn the ribbon cassette’s knob 5 or 6 times in the direction of the arrow again to take up any
slack in the ribbon.
Removing Jammed Paper
Follow these steps to clear a paper jam:
CAUTION:
The print head becomes very hot during printing. Allow it to cool before you reach into
the printer.
1. Turn the printer off and open the printer cover.
Rev. B
Handling and Maintenance 3-7
Confidential
2. Pull the paper and cut it at the position shown by the dotted line in the illustration below.
Cut here
3. Remove the paper roll.
4. Open the auto cutter by pulling the tab up and toward you.
5. Remove the jammed paper by pulling it in the direction of paper feeding.
3-8 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Note:
Do not pull the jammed paper in the opposite direction of paper feeding.
6. If paper still remains in the printer, follow the steps below.
7. Remove the ribbon cassette.
8. Loosen the screw securing the print head cover. Turn the screw only until you can tilt it as
shown in the illustrious.
Rev. B
Handling and Maintenance 3-9
Confidential
Note:
Do not remove the screw from the print head cover.
9. Remove the print head cover.
10. Remove all the jammed paper.
Note:
Do not pull the jammed paper in the opposite direction of paper feeding.
11. Replace the print head cover and secure it with the screw.
12. Replace the ribbon cassette and close the auto cutter.
3-10 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
13. If the auto cutter blade is not in its normal position (if you can see the blade in the auto cutter
slit, the blade is not in the normal position), insert a screwdriver into the right side of the
auto cutter and turn the gear inside to move the blade to the normal position.
14. Replace the paper roll and close the printer cover.
Rev. B
Handling and Maintenance 3-11
Confidential
Using the Power Switch Cover
You can use the provided power switch cover to protect the power switch from accidental or
improper operation. Attach the cover as shown in the illustration below.
You can turn the power on or off with the switch cover attached by inserting a pointed object
(like a ball point pen) through either of the two small holes on the switch cover.
CAUTION:
If an accident occurs when the power switch cover is attached, pull the AC adapter
cord out of the outlet immediately; otherwise the printer may be damaged.
3-12 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Inspection and Maintenance
Proper performance of the inspection and maintenance procedures described below allows this
unit to perform for the years of trouble-free operation for which it is designed.
Maintenance Procedures
The inspection procedures described here are divided between two types: daily inspection,
which can be performed by those who use the unit on a daily basis, and periodic inspection, to
be performed by individuals who have a more detailed technical knowledge of the unit.
Daily inspection
Setup
Inspection item
Action
Check for proper connection of cables.
Reconnect any cables that have
come loose.
Check for proper installation of roll paper
and ribbon cassette. Is the ribbon passing
along the proper route?
Correctly install roll paper and the
ribbon cassette.
Check the ribbon for damage.
Replace the ribbon cassette, if
damaged.
Open the roll paper cover and make
sure there are no large pieces of paper
or other foreign matter present.
Clean out any paper or foreign matter.
Checkpoints
Standards
Remedies
Dust, paper particles, or dirt
on and in the printer
No dust, paper particles, or dirt should be
allowed to build up on or in the printer.
Clean the printer thoroughly with a
vacuum cleaner.
No small pieces of paper should be left in
the paper path.
Remove any pieces of paper from the
paper path.
Lubrication
See the “Lubricants” section.
Lubricate the points listed in the
“Lubrication Points” section.
Operation check
When each printer component is
checked, no abnormalities should be
found.
Check the printer following the
Troubleshooting flowcharts in
Chapter 4.
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 “Replacing the Ribbon Cassette”
in this chapter.
Paper particles, paper
scraps, foreign matter
Periodic inspection
Rev. B
Handling and Maintenance 3-13
Confidential
Cleaning
1. Wipe off stains with a clean, dry cloth. If the stains cannot be wiped off, use a neutral
detergent.
CAUTION:
Never use benzene, alcohol, thinner, trichloroethylene, or any of the ketone family of
solvents because they may deform or damage plastic and rubber components.
2. Thoroughly clean all parts of the printer with a vacuum cleaner.
Note:
Check the amount of lubrication in each cleaned area and lubricate as needed. See “Lubricants”
below.
Lubricants
Lubrication is critical to retaining the printer at its initial performance level throughout its
product 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. See the
lubrication points table in this chapter and the lubrication and adhesive points diagrams in
the Appendix.
❏ 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 two types of lubricants used with this printer are G-31 and O-10.
3-14 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Lubrication Points
The following table describes the lubrication points, type, and class. The numbers in the
following table correspond to the numbers in the lubrication and adhesive points diagrams in
the Appendix on pages A-7 and A-8.
Lubrication points
No.
Lubrication point
Lubricant type
(1)
Contact points between the carriage shaft and
carriage sub assembly (2 points)
O-10
(2)
Ribbon intermediate gear shaft
G-31
(3)
Both ends of the guide roller
G-31
(4)
Both ends of the receive roller
G-31
(5)
Switching points of ribbon switch lever
G-31
(6)
Switching point of ribbon release lever
G-31
(7)
Left and right ribbon frame assembly mounting
shaft in the base frame assembly
G-31
(8)
Middle of the paper hold roller shaft
G-31
Tool List
The required tools for this printer are as follows:
❏ Brush #1
❏ Cleaning brush
❏ Phillips screwdriver No. 1
❏ Phillips screwdriver No. 2
❏ Phillips screwdriver No. 2 (with long handle)
❏ Flatblade screwdriver
❏ Pliers
❏ Retaining pliers #2.3
❏ Thickness gauge (0.50 mm, 0.55 mm, 0.60 mm)
❏ Tweezers
❏ Slanted blade cutter
Rev. B
Handling and Maintenance 3-15
Confidential
Lubricants and adhesives list
Lubricants and adhesives
Type/name
Quantity
Grease/G-31
40 gr (1.4 oz)
Oil/O-3
40 gr (1.4 oz)
3-16 Handling and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Chapter 4
Troubleshooting
Use the following to troubleshoot and repair the printer:
Self-test
This procedure tests control circuitry (other than serial communication and parallel
communication send / receive control) and the printer mechanism.
Troubleshooting flowchart
When the source of the problem is not clear, use the flowchart to find and replace a defective
component.
Troubleshooting table
Follow the steps outlined in this table to repair a defect whose symptoms are known.
Self-test
Initiating the Self-test
1. Insert a paper roll and a ribbon cassette in the printer, and close the printer cover.
2. Turn off the printer.
3. Turn on the printer while keeping the FEED button depressed. The self-test starts, and status
information is printed.
Self-test Standby
1. When status information printing is complete, the following is printed:
“Self-test printing. Please press paper FEED button.”
The PAPER OUT LED flashes alternately to indicate the standby condition.
2. Press the FEED button to continue the self-test.
Ending the Self-test
The printer prints “*** completed *** “ and ends the self-test. The printer automatically becomes
ready to receive data after the self-test.
Rev. B
Troubleshooting 4-1
Confidential
Troubleshooting Flowchart
If the source of a problem is not clear, use the flowchart below to find and replace the defective
component. Normally, perform servicing by component replacement. Repairs of the PCBs and
other components should be performed only by technicians.
Start
Power on
Is POWER
LED lit?
No
1
Yes
Is ERROR
LED flashing?
No
Yes
Take steps described in
“Error types and
countermeasures.”
END
Is PAPER
OUT LED lit?
Yes
Is paper roll in
near-end condition
or not inserted?
No
No
Yes
2
Replace or insert paper roll.
Semi-automatic
loading executed?
No
Is self-test normal?
3
Yes
Execute the self-test
No
4
Yes
Does auto-cutter
perform normally?
No
5
Yes
Host sends print data
Is printout
normal?
Yes
No
6
END
4-2 Troubleshooting
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
1 POWER LED does not light
1
Is power supply
cable connected
properly?
No
Connect power supply cable properly.
Yes
No
OK?
Yes
End
Does external power
supply have proper output
voltage rating? (approximately
+40 V in no-load
condition)
Yes
No
Replace external power supply.
No
OK?
Yes
End
Has fuse F1 on
main PCB blown?
No
Yes
Make sure main PCB does not
have any damage such as burns.
Replace Fuse F1
(See Replacing the fuse in Chapter 5)
No
OK?
Yes
End
Replace main PCB
End
Rev. B
Troubleshooting 4-3
Confidential
2 PAPER LED is lit.
2
Turn the power on again.
OK?
Yes
No
END
(*)
Is the paper
roll near end sensor’s
continuity normal?*
No
Replace the nearend sensor.
Yes
No
OK?
Yes
END
Replace printer mechanism
assembly.
Yes
OK?
No
END
Replace main PCB.
END
(*) The near-end sensor is optional.
4-4 Troubleshooting
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
3 Semi-automatic loading is not executed.
3
Yes
Is paper jammed in
the paper inlet path?
Remove the paper.
No
No
OK?
Yes
END
Is connector CN6
attached firmly?
No
Attach connector
firmly.
Yes
No
OK?
Yes
END
Replace printer mechanism
assembly.
OK?
Yes
No
END
Replace main PCB.
END
Rev. B
Troubleshooting 4-5
Confidential
4 Self-test is not normal.
4
Does the printer not
perform at all?
Yes
No
Replace printer
mechanism assembly.
Is the output voltage
of the regulator circuit on
the main board within
the specified range? (*)
Yes
OK?
No
END
No
Replace the main PCB.
Replace the mechanism.
No
OK?
Yes
Replace main PCB.
END
END
END
(*) Confirm the voltage at each terminal in the table below:
Checkpoint
Specified value
Pin 3 of U2, U3, U4
Approx. 24 V
R54
Approx. 5 V
4-6 Troubleshooting
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
5 The auto-cutter does not perform correctly.
Disassembly of the auto-cutter unit
is prohibited. If you disassemble it,
performance cannot be guaranteed.
5
Is there
a paper jam in
the auto-cutter?
Yes
Remove jammed paper.
Yes
Turn on the power again.
No
OK?
Yes
End
Replace the auto-cutter unit.
OK?
Yes
No
End
Replace the main
circuit board.
End
Rev. B
Troubleshooting 4-7
Confidential
6 Data from host is not printed normally.
6
Set DIP switch 1–1 to OFF.
Send data from host to printer.
(*)
Is “?” printed?
Yes
Are serial
interface parameters
set to identical values at
host and printer?
No
No
Make settings identical.
Yes
Does
interface
cable match
specifications?
No
No
OK?
Yes
Replace with a proper cable.
End
Yes
No
OK?
Yes
End
Is
interface PCB
connected to the
main PCB
firmly?
(*) Dotted line indicates
the process of checking
problems for the serial
interface.
No
Connect the interface
PCB firmly.
Yes
No
OK?
Yes
End
Replace interface PCB.
OK?
Yes
No
End
Replace printer
mechanism assembly
End
4-8 Troubleshooting
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Troubleshooting Tables
The tables contain the following columns:
❏ Problem
This is a symptom that can be verified.
❏ Probable cause
This is a listing of one or several possible causes that should be examined.
❏ Level
Level A
The problem can be corrected by persons familiar with the printer who have
general knowledge, but special technical skills are not required.
Level B
The problem requires thorough knowledge and familiarity with the printer as
well as technical skills and experience.
❏ Checkpoint
These are one or more areas in the printer that should be checked.
❏ Action
These are the steps to correct the problem. If the problem persists after taking these steps,
check the other possible causes listed.
Table 4-1 Troubleshooting table for printer operation failure
Problem
Probable cause
The POWER LED
does not light
when the power
is on.
The AC adapter may
be bad.
The fuse may be
blown.
The printer does
not print the self
test.
Rev. B
Level
Checkpoint
Action
B
Check output voltage of the
AC adapter (approximately
+40 VDC with no load).
Replace the AC adapter.
B
Check if fuse F1 on the main
circuit board assembly is blown.
Replace fuse F1. (See
“Replacing the Fuse” in
Chapter 5.)
B
Check if fuse (R42) on the main
circuit board assembly is blown
Replace the main circuit
board.
The main PCB may be
bad.
B
The cause is none of the
above.
Replace the main PCB.
The main PCB may be
bad.
B
Check the self test using
another main circuit board unit.
Replace the main PCB.
The FEED button may
be bad.
B
Check the continuity of the
FEED button (SW2).
Replace SW2.
The printer
mechanism assembly
may be bad.
B
The cause is none of the
above.
Replace the mechanism
assembly.
Troubleshooting 4-9
Confidential
Table 4-1 Troubleshooting table for printer operation failure (Continued)
Problem
Probable cause
Data from the
host is printed
incorrectly.
An incorrect interface
cable may be used.
Checkpoint
Action
A
Check if the interface cable
matches the printer
specifications.
Use the correct interface
cable.
For the serial interface
models, the printer DIP
switch settings do not
match the host
settings.
A
Check if the printer DIP switch
settings match the host settings.
Change the printer DIP
switch settings or host
settings so that they
match.
The main circuit board
unit may be bad.
B
Check the printer using another
main circuit board unit.
Replace the main circuit
board unit.
The mechanism
assembly may be
bad.
B
The cause is none of the
above.
Replace the mechanism
assembly.
The PAPER OUT
LED does not
correctly
indicate the
status of the
paper roll.
The near-end
detector assembly
may be bad. (The
near-end detector is
an option.)
B
Check the signal of the nearend detector assembly.
Replace the near-end
detector assembly.
The printer is not
initialized (home
position
detection error).
The connector is not
inserted correctly.
A
Check if the pins of CR motor
cable are inserted in connector
CN5 of the main circuit board
unit.
Reinsert the connector.
The carriage motor
assembly may be
bad.
B
Check the continuity of each
terminal.
Replace the carriage
motor assembly.
The carriage motor
may be bad.
B
The cause is none of the
above.
Replace the carriage
motor assembly.
The home position
detector assembly
may be bad.
B
Using an oscilloscope, check if
the detection signal is output
when the print head unit passes
above the home position
detector assembly.
Replace the home position
detector assembly.
4-10 Troubleshooting
Level
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Table 4-1 Troubleshooting table for printer operation failure (Continued)
Problem
Probable cause
Semi-automatic
loading is not
executed.
(Paper is not
fed.)
The paper supply
operation may be
incorrect.
Level
Checkpoint
Action
A
Check if the paper roll meets
printer specifications.
Use the correct paper roll.
(See “Paper Specifications”
in Chapter 1.)
The paper path may
be incorrect.
A
Check if the paper supply path
is blocked by paper particles or
foreign materials.
Remove any pieces of
paper, paper particles, or
foreign materials.
The connector is not
inserted correctly.
A
Make sure the PF motor cable
pins are inserted in connector
CN6 of the main circuit board.
Reinsert the connector.
The paper feed motor
may be bad.
B
Check if the motor rotates
during semi-automatic loading.
Replace the paper feed
motor.
The paper hold roller
assembly may be
worn.
B
Check if the paper hold rollers
are worn or damaged.
Replace the paper hold
roller assembly.
The gears may be
worn or damaged.
B
Check if the paper feed
reduction gear and paper feed
gear are worn or damaged.
Replace any worn or
damaged parts.
The paper detection
switch assembly may
be bad.
B
Using an oscilloscope, check if
the detection signal is output
when roll paper is inserted.
Replace the paper
detection switch assembly.
Table 4-2 Troubleshooting table for bad printing
Problem
Probable cause
The printer does
not print. (The
carriage motor
operates, but
nothing is
printed, or the
print color is
light.)
The ribbon in the
ribbon cassette may
be bad.
Dots are missing
continuously. (A
specific dot is
not printed.)
Rev. B
Level
Checkpoint
Action
A
Check if the color of the ribbon
is faded or the ribbon is
wrinkled or torn.
Replace the ribbon
cassette.
The platen gap may
be incorrect.
B
Check the platen gap
(standard: 0.55 mm ± 0.05 mm).
Adjust the platen gap.
(See “Adjustments” in
Chapter 5.)
The common wire of
the print head unit
may be bad.
B
Check the continuity of the
common wire.
Replace the print head
unit.
The head flexible
plastic cable (FPC)
may be bad.
B
Check the continuity of the
common line.
Replace the head FPC.
The head FPC may be
bad.
B
Check the continuity of the
head FPC.
Replace the head FPC.
The drive coil of the
print head unit may
be bad.
B
Using a meter, check the
resistance of the corresponding
drive coil. (Standard: 19.2 ohms
± 5%)
Replace the print head
unit.
The dot wires of the
print head unit may
be bad.
B
Check if the dot wires are
broken.
Replace the print head
unit.
Troubleshooting 4-11
Confidential
Table 4-2 Troubleshooting table for bad printing (Continued)
Problem
Probable cause
Dots are missing
occasionally.
The head FPC may be
bad.
The character
width is
incorrect.
Paper is not fed.
(Printing is
performed on
one line.)
Paper is not fed.
(Printing is
performed on
one line.)
(cont.)
4-12 Troubleshooting
Level
Checkpoint
Action
B
Check the continuity of the
head FPC.
Replace the head FPC.
The print head unit
may be bad.
B
Check if there are paper
particles or ink on the tips of the
dot wires of the print head unit.
Remove any paper
particles or ink, or replace
the print head unit.
The print head unit
may be worn.
B
The cause is none of the
above.
Replace the print head
unit.
Paper particles or
foreign substances
may be attached to
gears, belt driving
pulley, or the belt.
B
Check if any paper particles or
foreign substances are
attached to the belt driving
pulley, belt tension pulley, and
belt.
Remove any paper
particles or foreign
substances.
The gears, belt driving
pulley, or the belt may
be damaged or worn.
B
Check for wear and damage
in the belt driving pulley, belt
tension pulley, and belt.
Replace any worn or
damaged parts.
The operation of the
paper supply may be
incorrect.
A
Check if the specified paper
roll is used.
Use the correct paper roll.
(See “Paper Specifications”
in Chapter 1.)
The paper path may
be incorrect.
A
Check if the paper supply path
is blocked.
Remove paper particles
and foreign substances.
The connector is not
inserted correctly.
A
Make sure that the PF motor
cable pins are inserted in
connector CN6 of the main
circuit board.
Reinsert the connector.
The paper feed roller
may be bad.
B
Check for wear and damage
on the surface of the roller.
Replace the paper feed
roller.
The paper hold roller
assembly may be
worn or damaged.
B
Check for wear and damage
to the rollers of the paper hold
roller assembly.
Replace the paper hold
roller assembly.
Gears may be worn or
damaged.
B
Check for wear and damage
to the paper feed reduction
gear and paper feed gear.
Replace any worn or
damaged parts.
Paper feed motor
assembly may be
bad.
B
Check the continuity of the PF
motor cable assembly.
Replace the paper feed
motor cable assembly.
The paper feed motor
may be bad.
B
The cause is none of the
above.
Replace the paper feed
motor.
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Table 4-2 Troubleshooting table for bad printing (Continued)
Problem
Probable cause
The paper feed
pitch is not
uniform.
Operation of the
paper supply may be
incorrect.
The printer prints,
but the ribbon is
not fed.
Rev. B
Level
Checkpoint
Action
A
Check if the specified paper
roll is used.
Use the correct paper roll.
(See “Paper Specifications”
in Chapter 1.)
The paper path may
be incorrect.
A
Check if the paper supply path
is blocked.
Remove paper particles
and foreign substances.
The connector is not
inserted correctly.
A
Make sure the PF motor cable
pins are inserted in connector
CN6 of the main circuit board.
Reinsert the connector.
The paper feed roller
may be worn or
damaged.
B
Check for wear and damage
on the surface of the roller.
Replace paper feed roller.
The paper hold roller
assembly may be
bad.
B
Check if the paper hold roller
assembly rotates smoothly.
Clean and lubricate the
paper hold roller assembly
or replace it.
The paper hold roller
assembly may be
worn or damaged.
B
Check for wear and damage
to the rollers of the paper hold
roller assembly.
Replace the paper hold
roller assembly.
Gears may be worn or
damaged.
B
Check for wear and damage
to the paper feed reduction
gear and paper feed gear.
Replace any worn or
damaged parts.
The ribbon cassette
may be loose.
A
Check if the ribbon cassette is
installed correctly.
Install the ribbon cassette
correctly. (See “Replacing
the Ribbon Cassette” in
Chapter 3.)
The ribbon cassette
may be bad.
A
Check if the ribbon is fed by
rotating the ribbon-tightening
knob.
Replace the ribbon
cassette.
The ribbon drive plate
assembly may be
bad.
B
Check if the ribbon drive plate
assembly moves smoothly.
Replace the ribbon drive
plate assembly.
The clutch portion of
ribbon take-up
assembly may be
worn.
B
Check whether the ribbon
moves smoothly when you turn
the upper portion of the ribbon
take-up assembly.
Replace ribbon take-up
assembly.
Gears may be worn or
damaged.
B
Check if the ribbon drive
assembly, ribbon intermediate
gear, ribbon transmission gear,
and ribbon take-up assembly
are worn or damaged.
Replace any worn or
damaged parts.
B
Check if any foreign
substances are attached to the
gears.
Remove the foreign
substances.
Troubleshooting 4-13
Confidential
Table 4-2 Troubleshooting table for bad printing (Continued)
Problem
Probable cause
The print color is
mixed. (Half of
the character is
black and the
other half is red.)
The ribbon cassette is
floating.
Color does not
change. (Black
to red or red to
black.)
4-14 Troubleshooting
Level
Checkpoint
Action
A
Verify that the ribbon cassette
is mounted correctly.
Mount the ribbon cassette
in the correct position.
(See “Replacing the
Ribbon Cassette” in
Chapter 3.)
The ribbon is placed
incorrectly.
A
Verify that the ribbon is not
placed between the print
head mask assembly and
paper feed frame assembly.
Place the ribbon between
the print head unit and
print head mask assembly.
The ribbon frame
assembly is deformed.
B
Verify that the ribbon frame
assembly is not deformed.
If deformed, replace the
ribbon frame assembly.
The ribbon is
defective.
A
Verify that the color of the
ribbon is not blurred, or the
ribbon is not rumpled or worm
Replace the ribbon
cassette if the ribbon is
worn or the print color is
light.
The ribbon release
spring is unhooked or
damaged.
B
Verify that the ribbon release
spring is not unhooked or
damaged.
If the spring is unhooked,
hook it back on. If it is
damaged, replace it.
The ribbon frame
spring is unhooked or
damaged.
B
Verify that the ribbon frame
spring is not unhooked or
damaged.
If the spring is unhooked,
hook it back on. If it
damaged, replace it.
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Error Types and Countermeasures
Follow the flowcharts on the next page based on the ERROR LED blinking patterns in the table
below and repair the printer. The printer does the following when an error occurs:
❏ All operations stop
❏ The printer goes off-line (when DIP SW 1-8 is off).
❏ The ERROR LED blinks.
ERROR LED blinking patterns
Error
Error Description
ERROR LED Blinking Pattern
Action
160 ms
(1) Head high-temperature error ( 1)
Print head temperature is too high.
Action 1
(2) Home
Auto cutter
error
position
detection error
There
an abnormality
indetected
the
Home is
position
cannot be
auto
cutter.
due to
a paper jam or other problem.
Action 2
Memory or gate
(3) High-voltage
error
array read/write
error
Read/write
check
has failed.
Power supply
voltage
is too high.
Action 3
Low-voltage error
(4) High-voltage
error
Power
Power supply
supply voltage
voltage isistoo
toohigh.
low.
Action 3
4
CPU execution
(5) Low-voltage
error
error
CPU issupply
trying to
execute
an low.
invalid
Power
voltage
is too
address.
Action 45
(6)
(6) Print
CPU head
execution
error
temperature
detection error.
CPU head
is trying
to executeisanout
invalid
Print
temperature
of
address.operating range.
normal
Action 4
6
error
(7) Auto-cutter
Thermistor error
Abnormality
occurs in the
There
is an abnormality
in auto-cutter.
detecting
the print head temperature or the print
head rank can not be read correctly.
**
Action
7
4
*
( 1) This error can occur for a short time during normal printing, when the print head
reaches
a high temperature. No repair
Approx.
2.56 sec
is necessary in this case.
(*1) This error can occur for a short time during normal printing, when the print head reaches a high temperature. No
repair is necessary in this case.
** See troubleshooting flowchart.
*
Rev. B
Troubleshooting 4-15
Confidential
Action 1
Action 1
Wait for the print head temperature to drop.
Has the
printer recovered
from the error?
Yes
END
No
Replace main PCB.
OK?
Yes
No
END
Replace printer mechanism assembly.
END
4-16 Troubleshooting
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Action 2
Action 2
Are there
any chips of paper
in the home position
sensor?
Yes
Remove paper.
No
OK?
Yes
END
Is connector CN5
inserted firmly?
No
Insert the connector
firmly.
Yes
No
OK?
Yes
Replace printer
mechanism assembly.
OK?
No
END
Yes
END
Replace main PCB.
END
Rev. B
Troubleshooting 4-17
Confidential
Action 3
Action 3
Turn the printer power off.
Does external power
supply have proper output
voltage rating? (approx. 40 V
in no-load
condition)
No
Replace external
power supply.
Yes
No
OK?
Yes
END
Replace main PCB.
OK?
Yes
No
END
Replace printer mechanism assembly.
END
4-18 Troubleshooting
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Action 4
Action 4
Replace main PCB.
OK?
Yes
No
END
Replace printer
mechanism assembly.
END
Rev. B
Troubleshooting 4-19
Confidential
4-20 Troubleshooting
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Chapter 5
Disassembly, Assembly, and Adjustment
Small Part Specifications
This section uses abbreviations for small parts, such as screws and washers. The following is a
list of these abbreviations and illustrations of the screw types.
❏ CCS-tite
Cross-recessed Cup head S-tite self-tapping screw
❏ CBS-tite
Cross-recessed Binding head S-tite self-tapping screw
❏ CBB-tite
Cross-recessed Binding head B-tite self-tapping screw
❏ CBT-B
Cross-recessed Binding head self-tapping screw not fluted class 2
❏ CP(O)
Cross-recessed Pan head screw with outside toothed lock washer
❏ CPS-tite
Cross-recessed Path head S-tite self-tapping screw
❏ CPS-tite(O)
Cross-recessed Pan head S-tite screw with outside toothed lock washer
❏ CPS-tite(S-P4) Cross-recessed Pan head S-tite self-tapping screw with Spring lock washer
and plain washer
❏ CPT-B
Cross-recessed Pan head self-tapping screw not fluted class 2
❏ CPP-tite
Cross-recessed Pan head P-tite self-tapping screw
Head (top)
Head (side)
Body
Washer (assembled)
C (Cross)
P (Pan)
S-tite
(O)
B (Bind)
T-B
C (Cup)
B-tite
P-tite
Rev. B
Disassembly, Assembly, and Adjustment 5-1
Confidential
Disassembly
Removing the fuse
1. Turn off the printer.
2. Disconnect the external power supply.
3. Remove the main cover assembly from the printer.
4. Remove the lower plate from the printer.
CPS-tite (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Fuse
5. Use tweezers to remove the blown fuse.
6. Replace the fuse with a 125 V, 2.0 AT Littelfuse 154002T.
5-2 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Removing the print head unit
1. Remove 4 screws, and remove the upper case.
2. Remove the right side screw securing the auto-cutter fixing plate.
Upper case
screw
Auto-cutter
fixing plate
3. Loosen the thumb-screw and remove the head cover.
Head cover
Thumb-screw
Rev. B
Disassembly, Assembly, and Adjustment 5-3
Confidential
4. Remove the ribbon frame spring and ribbon frame fixing plate; then remove the ribbon
frame assembly.
Ribbon frame
fixing plate
Ribbon frame
assembly
Ribbon frame
spring
5. Remove the screw seuring the print head unit.
6. Disconnect the print head FPC and remove the print head unit.
Print head unit
Print head FPC
Refer to the corresponding assembly section(s) in this chapter for the assembly procedure.
5-4 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Removing the auto-cutter
1. Open the main cover assembly.
2. Remove 1 screw, and remove the auto-cutter cover. Remove the cable connector from the
auto-cutter cover (See the second part of the illustration below). Then disconnect the autocutter cable from the cable connector for the auto-cutter.
(The illustration does not have the main cover assembly. However, it’s not necessary to
remove it.)
screw
Auto-cutter
cover
Auto-cutter
cable
Connector
3. Remove 2 REs.
4. Remove the auto-cutter plate shaft, auto-cutter plate spring shaft, and auto-cutter plate
spring. Then remove the auto-cutter.
Auto-cutter
Auto-cutter
plate shaft
Auto-cutter
plate spring
Auto-cutter
plate spring shaft
Refer to the corresponding assembly section(s) in this chapter for assembly procedure.
Rev. B
Disassembly, Assembly, and Adjustment 5-5
Confidential
Removing the main circuit board assembly
1. Remove the lower plate.
lower plate
2. Remove the interface circuit board assembly.
Interface circuit
board assembly
5-6 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
3. Disconnect 5 cables.
4. Remove 5 screws.
5. Follow the steps below; then remove the main circuit board assembly.
① Slide the board toward the arrow ①.
② Move the 2 cables toward the arrow ②.
③ Move the board toward the arrow ③.
④ Once the board is released from the plate (marked with ④), the main circuit board can be
removed from the printer.
connector
connectors
connectors
screws
screws
Refer to the corresponding assembly sections in this chapter for assembly procedures.
Rev. B
Disassembly, Assembly, and Adjustment 5-7
Confidential
Sub-assembly A
Paper feed frame unit assembly
1. Apply G-31 to the middle of the paper hold roller shaft.
2. Pass the paper hold roller shaft through the paper hold plate spring and paper hold roller.
Paper hold roller shaft
Apply G-31
Paper hold
plate spring
Paper hold roller
3. Hold the paper feed roller assembly at the angle shown in the illustration and insert the thin
end of the shaft into the paper feed frame assembly. Then move the roller assembly into
place.
Paper feed frame assembly
Thin
portion
Paper feed roller assembly
5-8 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
4. Attach the paper feed reduction gear to its shaft as shown in the second illustration below.
Make sure that the reduction gear is closer to the frame than the roller assembly gear.
5. Next, insert the J feed roller shaft holder (right) into the frame as shown in the illustration.
(Paper feed
roller assembly)
J feed roller shaft holder (right)
6. Fix the J feed roller shaft holder (left) onto the paper feed roller assembly’s shaft, insert it in
the frame, and lock it with the RE.
RE (2.3)
J feed roller
shaft holder
(left)
Paper feed
reduction gear
Note:
The right J feed roller shaft holder, which is fixed to the paper feed roller assembly, is inserted
into the frame first; then the left J feed roller shaft holder is attached.
Rev. B
Disassembly, Assembly, and Adjustment 5-9
Confidential
7. Attach the paper feed motor to the paper feed frame assembly with a screw.
Paper feed motor
CCS-tite (M3x6)
[0.69 to 0.88 N • m
(7 to 9 kgf • cm)]
Paper feed
frame assembly
8. By fitting the U-cut portion of the upper paper guide to the shaft of the paper feed roller
assembly, attach the paper guide to the paper feed frame assembly. Press the paper guide
until it clicks.
✔
Check that the 2 dowels on the paper feed frame are in the rectangular holes on the upper
paper guide.
Dowels
Paper feed roller
assembly’s shaft
Rectangular
holes
U-cut portion
Upper paper guide
5-10 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
9. Insert the ends of the paper hold roller shaft into the paper feed frame assembly, as shown
below.
Paper feed
frame assembly
Paper hold roller
shaft (assembled)
10. Hook the paper hold springs to the paper feed frame assembly and paper hold roller shaft.
Hook the spring on the paper feed motor side first. (If you hook the other side first, the
paper hold shaft is hard to hook.)
Paper hold spring
Paper feed motor
Paper feed
frame assembly
Paper hold roller shaft
Rev. B
Disassembly, Assembly, and Adjustment 5-11
Confidential
✔
Check that the corner edge of the paper hold plate spring is placed on the paper feed frame
assembly as shown in the illustration below.
✔
Check that the paper hold plate spring is not deformed.
Paper hold plate spring
Corner edge
Paper feed
frame assembly
Main Assembly 1
Ribbon switch lever, ribbon release spring, ribbon release lever, ribbon
intermediate gear, ribbon transmission gear, ribbon take-up assembly, and
ribbon drive plate assembly
1. Place the ribbon switch lever by fitting its hole onto dowel A of the base frame assembly.
While rotating the ribbon switch lever, make sure that the protrusion part does not catch and
moves freely.
2. Hook the ribbon release spring to the notch of the ribbon switch lever and hook B of the base
frame assembly.
3. Fit the holes of the ribbon release lever to 2 shafts of the base frame assembly; then secure it
with the RE.
5-12 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
✔
TM-U200 Series (Type B) Service Manual
Check that the ribbon switch lever and ribbon release lever are attached in the proper
directions.
Notch
Ribbon release lever
Ribbon switch lever
RE (3)
Ribbon release spring
A
Base frame assembly
B
4. Attach the ribbon intermediate gear to the base frame assembly.
5. Attach the ribbon transmission gear and ribbon take-up assembly together to the base frame
assembly.
6. Attach the ribbon drive plate assembly to the base frame assembly and fix with the REs.
RE (2.3)
Ribbon drive
plate assembly
Ribbon take-up
assembly
Ribbon
transmission gear
Ribbon
intermediate gear
Base frame assembly
Rev. B
Disassembly, Assembly, and Adjustment 5-13
Confidential
Main Assembly 2
Tension plate assembly
1. Insert the tab of the tension plate assembly into the base frame assembly; then slide the
tension plate in the direction of arrow 2 to lock it.
Tab
Tension plate assembly
2
1
Base frame assembly
Main Assembly 3
Paper feed frame assembly
1. Place the paper feed frame assembly (sub assembly A) on the base frame assembly so that
portion A is aligned with portion B.
2. Press down the paper feed frame assembly until the tabs on the paper feed frame assembly
lock into the rectangular holes in the paper feed frame.
5-14 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
3. Attach the screws.
CBT-B (M3x10)
[0.49 to 0.69 N • m
(5 to 7 kgf • cm)]
Paper feed frame assembly
Rectangular hole
Portion A
Paper hold
plate spring
CBT-B (M3x10)
[0.49 to 0.69 N • m
(5 to 7 kgf • cm)]
Portion A
Tab
Base frame assembly
✔
Portion B
Check that the paper hold plate spring is not caught on the base frame assembly.
Main Assembly 4
Carriage motor assembly
1. Fit the A corners of the carriage motor assembly under the B corners of the base frame
assembly. Then slide the carriage motor assembly in the direction of the arrow to fit the
other two corners of the carriage motor assembly under the tabs of the base frame assembly.
A corners
Carriage motor assembly
B corners
Tab positions
Base frame assembly
Rev. B
Disassembly, Assembly, and Adjustment 5-15
Confidential
2. Hook the paper feed motor cable to hook A on the base frame assembly. Make sure to route
the cable as shown in the illustration.
3. Route the carriage motor and paper feed motor cables outside the base frame as shown in
the illustration.
Paper feed motor cable
Hook A
Paper feed
frame
Carriage motor cable
Main Assembly 5
Carriage sub assembly
1. Fit the belt over the carriage motor sub assembly gear and the tension plate gear.
Carriage
sub assembly
Belt
Tension plate
gear
Carriage motor
sub assembly gear
5-16 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 6
Carriage shaft assembly
✔
Pass the carriage shaft through the paper feed frame assembly and carriage sub assembly. At
this time, hook the paper hold spring feet to the carriage shaft’s dowels, as shown in the
illustration.
Paper hold
spring hook
Carriage
subassembly
Carriage shaft
Paper feed
frame assembly
✔
Check that the paper hold spring hooks are hooked in the correct direction. (The direction is
different for the right and left springs.)
Rev. B
Disassembly, Assembly, and Adjustment 5-17
Confidential
Main Assembly 7
Adjustment roller shaft holder assembly
1. Attach the adjustment roller shaft holders to the carriage shaft as shown in the illustration.
Adjustment roller
shaft holder
Carriage shaft
2. Push the adjustment roller shaft holders and turn them 90 degrees in the direction of arrow
C. The A portion points straight down.
✔
Check that the adjustment roller shaft holders click into place.
Carriage shaft
C
Adjustment roller
shaft holder
Portion A
5-18 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 8
Carriage guide shaft assembly
1. Insert the carriage guide shaft through the base frame assembly and carriage sub assembly
and lock it with the RE.
Carriage sub assembly
Carriage guide shaft
Base frame assembly
RE (2.3)
Main Assembly 9
Belt tension spring assembly
1. Hook the belt tension spring to the hooks on the tension plate assembly and paper feed
frame assembly.
2. Push the carriage motor assembly in the direction of the arrow to make sure the motor is
properly placed. Then attach the screw.
✔
Be careful not to move the tension plate assembly when securing the screw.
Carriage motor assembly
CPS-tite (S-P4) (M3x8)
[0.49 to 0.69 N • m
(5 to 7 kgf •cm)]
Tension plate
assembly’s hook
Paper feed frame
assembly’s hook
Belt tension spring
Rev. B
Disassembly, Assembly, and Adjustment 5-19
Confidential
3. Move the belt tension spring from the paper feed frame’s hook to the base frame hook.
Base frame hook
Belt tension spring
Main Assembly 10
Sensor assembly
1. Insert the sensor portion of the sensor assembly into the base frame assembly; then attach
the board by pushing it in.
2. Press the board down to attach it completely.
3. Attach the paper detector switch to the base frame assembly.
Paper detector switch
Sensor assembly
Base frame assembly
✔
Make sure the sensor board is not damaged.
4. Hook the sensor assembly lead wires to the base frame assembly as shown in the illustration.
5-20 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
5. Position the paper detection switch sub assembly lead wires as shown in the illustrations,
and make sure that the lead wires are as close as possible to the base frame surface.
Paper detection switch sub assembly lead wires
Sensor sub assembly’s lead wires
Main Assembly 11
Carriage motor heat sink assembly
1. Attach the carriage motor heat sink to the carriage motor assembly, and turn the heat sink in
the direction of the arrow until it stops.
✔
Check that surface B of the carriage motor heat sink and surface A of the paper feed frame
are the same height. If not, adjust the heat sink to make the surfaces the same height. Check
that the motor cables are not caught on the heat sink.
Surface B
Carriage motor
heat sink
Motor cables
Surface A
Carriage motor
assembly
Paper feed frame
Rev. B
Disassembly, Assembly, and Adjustment 5-21
Confidential
Main Assembly 12
Print head FPC assembly
1. After folding the projections of print head FPC, insert the FPC under the arm of the base
frame assembly while fitting the projections with the arm.
2. Fold the straight side of print head FPC. (See the figure.)
3. Pass the straight side of print head FPC through the slit in the base frame assembly.
Projection
Print head FPC
Straight side
Base frame assembly
Arm
Armsection
4. Pull out the print head FPC from the back of base frame assembly.
5. Adjust the print head FPC from the back of base frame assembly.
6. Pass the end of print head FPC through the guide of base frame assembly.
5-22 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
✔
TM-U200 Series (Type B) Service Manual
The projections of print head FPC must be held with the arm of base frame assembly.
Print head FPC processing
Hook
Main Assembly 13
Print head unit
1. Attach the print head FPC to the print head unit.
2. Place the print head FPC under the hooks on the carriage sub assembly, and then secure the
print head unit to the carriage sub assembly with the screw.
Rev. B
Disassembly, Assembly, and Adjustment 5-23
Confidential
3. Place the print head FPC under the hooks on the carriage sub assembly, and then secure the
print head unit to the carriage sub assembly with the screw.
CPP-tite (M3x10)
[0.49 to 0.69 N • m
(5 to 7 kgf • cm)]
Print head unit
Carriage sub assembly
A
Print head FPC
O-10 application points
Hooks
✔
Make sure there is space between the slanting edge of the print head FPC and slanting side
of the carriage sub assembly, and between the FPC edge and portion A. If there is no space,
the print head FPC may not be inserted into the print head unit firmly. Remove the print
head unit and insert the print head FPC again.
There must be space
Main assembly 14
Left cover fixing plate and right cover fixing plate
1. Attach the dowel of the left cover fixing plate into the hole in the paper feed frame, and
secure it with the screw.
5-24 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
2. Attach the dowel of the right cover fixing plate into the hole in the paper feed frame and
secure it with the screw.
CCS-tite (M3x6)
[0.69 to 0.88 N • m
(7 to 9 kgf • cm)]
Right cover fixing plate
Paper feed frame
Left cover fixing plate
CCS-tite (M3x6)
[0.69 to 0.88 N • m
(7 to 9 kgf • cm)]
Rev. B
Disassembly, Assembly, and Adjustment 5-25
Confidential
Main Assembly 15
Ribbon frame earth plate
1. Put the ribbon frame earth plate in the carriage guide shaft.
Ribbon frame earth plate
Carriage guide shaft
Main Assembly 16
Ribbon frame assembly, ribbon frame spring, and ribbon frame fixing plate
1. Apply G-31 to the switching point of the ribbon frame on the ribbon switch lever. (A line of
lubrication: length 4 mm x wide 1 mm)
5-26 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
2. Apply G-31 to the tip of release point of the ribbon frame assembly on the base frame
assembly. (A point of lubrication: diameter 1 mm)
3. Apply G-31 to the each ribbon frame assembly mounting shaft (left and right) in the base
frame assembly. (A line of lubrication: length 2 mm x wide 1 mm)
4. Attach the shaft (A) and (B) of the base frame assembly to the ribbon frame assembly.
5. Attach the ribbon frame fixing plate into the groove in the right ribbon frame assembly
mounting shaft (A).
6. Hook the ribbon frame spring to (C) of the base frame assembly and (D) of the ribbon frame
assembly.
Ribbon frame fixing plate
(D)
Ribbon frame assembly
Ribbon frame spring
Apply G-31
(B)
(C)
Base frame assembly
Apply G-31
Rev. B
(A)
Apply G-31
Disassembly, Assembly, and Adjustment 5-27
Confidential
Main Assembly 17
Thumb-screw and head cover
1. Place the thumb-screw into the hole in the head cover and secure the RE (2.5) in the center of
the thumb-screw.
2. Insert the tab of the head cover into the left cover fixing plate first, and then rotate and
secure with the thumb-screw while aligning the dowel.
Tab
Thumb-screw
Head cover
RE (2.5)
Left cover fixing plate
Dowel
5-28 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 1 (Case Unit)
Lower cutter plate assembly
1. Attach the lower cutter plate to the upper plate and secure it with the screws.
CPS-tite (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Upper plate
Rev. B
Disassembly, Assembly, and Adjustment 5-29
Confidential
Main Assembly 2 (Case Unit)
Upper plate assembly
1. Turn over the printer mechanism assembly.
2. Align the rectangular hole with the hook, hole A with dowel B, and then secure the plate
with the screw.
Upper plate
Hole C
Hole A
Rectangular
hole
Dowel D
Hook
Dowel B
CBS-tite (M3x5) (0.59 to 0.78 N • m (6 to 8 kgf • cm)]
✔
Make sure hole C is aligned with dowel D.
5-30 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Note:
When you remove the upper plate, lift it up in the direction of arrow 1 slightly; then move it in
the direction of arrow 2 to release the hook to remove the plate completely.
Upper plate
Arrow 1
Arrow 2
Hook
Main Assembly 3 (Case Unit)
Main circuit board assembly
1. Attach the main circuit board assembly to the upper plate by attaching the power switch
side first and then the drawer kick-out and power connectors side. Secure the circuit board
with the screws.
Rev. B
Disassembly, Assembly, and Adjustment 5-31
Confidential
✔
Make sure to use the correct screw for each location.
CP(0) (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
CPS-tite (M3x6)
CP(0)(M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
CPS-tite (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Main circuit
board assembly
Power switch
Upper plate
5-32 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 4 (Case Unit)
Inserting the cables
1. Insert the lead wires of the print head FPC, the sensor assembly, and the auto-cutter
assembly into the connectors.
2. Insert the paper feed motor cable into CN6 and the carriage motor cable into CN5. At this
time, make sure to insert the cables so that black or red colored side connects to the pin 1
side of each connector.
Carriage motor cable
Red cable
Black cable
Main circuit
board assembly
Paper feed
motor cable
Print head FPC
CN6
CN5
(Pin 1 side)
Sensor assembly’s lead wires
Auto-cutter assembly’s lead wires
✔
Make sure not to confuse paper feed motor cable and carriage motor cable. Also check that
the black or red side of each cable is on the pin 1 side of the connector.
Main Assembly 5 (Case Unit)
Lower case assembly
1. Attach the lower case to the printer mechanism assembly. It is easy to assemble if you first
place portion B of the lower case under portion A of the upper plate.
Rev. B
Disassembly, Assembly, and Adjustment 5-33
Confidential
2. Bring out the paper feed motor and carriage motor cables through portion C and the sensor
assembly lead wires through portion D.
3. Secure the lower case with the screws.
[Adjustment] Perform the platen gap adjustment by referring to the Adjustment section at the end of
this chapter.
Lower case
Portion B
Portion C
Portion D
CPT-B (M3x12)
[0.59 to 0.78 N • m
[6 to 8 kgf • cm)]
Portion A
Upper plate
CPT-B (M3x12)
[0.59 to 0.78 N • m
[6 to 8 kgf • cm)]
Auto-cutter assembly’s lead wires
Sensor assembly’s lead wires
5-34 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 6 (Case Unit)
Manual cutter assembly and auto-cutter fixing plate
1. Attach the manual cutter to the paper feed frame assembly and secure it with the screw.
CBS-tite (M3x5)
[0.69 to 0.8 N • m
[7 to 9 kgf • cm)]
Manual cutter
Paper feed frame
✔
Check that the manual cutter is aligned with the paper feed frame as shown in the
illustration below.
Paper feed frame
Manual cutter
Rev. B
Disassembly, Assembly, and Adjustment 5-35
Confidential
2. While aligning the dowels, install the auto-cutter fixing plate and secure it with the screw.
3. Secure the earth plate with the screw.
T
CBS-tite (M3x5)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Auto-cutter
fixing plate
CP(O) (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Earth plate
5-36 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 7 (Case Unit)
Auto-cutter assembly
1. To attach the auto-cutter assembly to the auto-cutter plate assembly, fit the auto-cutter
assembly onto the left dowel of the auto-cutter plate assembly first, and then fit the right
side onto the right to match the right dowel.
Auto-cutter assembly
Dowel
Dowel
Auto-cutter plate assembly
CBS-tite (M3x4)
(0.59 to 0.78 N • m (6 to 8 kgf • cm)]
The procedure in step 2 below differs depends on if you attach the release lever to the autocutter lock lever or not. See Addendum 3 for information about the release lever.
2. When you attach the release lever: Insert the tab on the auto-cutter lock lever into the slit of
the release lever, then attach them into the shaft of the auto-cutter plate assembly. Attach the
auto-cutter lock lever spring with the RE (2.3).
Slit
Tab
RE (2.3)
Auto-cutter lock
lever spring
Release lever
Auto-cutter lock lever
Rev. B
Auto-cutter plate
assembly
Disassembly, Assembly, and Adjustment 5-37
Confidential
When you do not attach the release lever: Attach the auto-cutter lock lever with the RE
(2.3); then attach the auto-cutter lock lever spring with the RE (2.3).
RE (2.3)
RE (2.3)
Auto-cutter lock lever
Auto-cutter lock lever spring
3. Align the auto-cutter plate assembly with the holes of the auto-cutter fixing plate.
4. Attach the auto-cutter plate assembly to the auto-cutter fixing plate. Make sure the holes for
the shafts of the auto-cutter plate assembly match the holes in the auto-cutter fixing plate.
Insert the hook end of the spring in the hole in the auto-cutter plate assembly first, and the
auto-cutter plate spring shaft and auto-cutter plate shaft in the holes of the auto-cutter fixing
plate and secure them with the RE (3). Attach the other side of the spring into the hook of the
auto-cutter fixing plate.
Holes for shafts
Auto-cutter plate assembly
Auto-cutter plate shaft
Hole for spring
RE (3)
Hook end of spring
Hook of
auto-cutter
fixing plate
Auto-cutter plate spring
5-38 Disassembly, Assembly, and Adjustment
Auto-cutter plate
spring shaft
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
5. Connect the auto-cutter cable to the cable connector for the auto-cutter.
Cable connector
of the auto-cutter
Auto-cutter cable
6. Insert the connectors you connected in step 6 into the slit in the auto-cutter cover. Insert the
cable wires of the auto-cutter into the other slit in the auto-cutter cover.
Auto-cutter cover
The other slit
Slit
Rev. B
Disassembly, Assembly, and Adjustment 5-39
Confidential
7. While aligning the dowel, install the auto-cutter cover, and secure it with the screw. Arrange
the cable wires so that they come through the cut portion shown in the illustration.
CBS-tite (M3x5)
(0.59 to 0.78 N • m (6 to 8 kgf • cm)]
Auto-cutter cover
Cut portion
Main Assembly 8 (Case Unit)
Paper roll receive rollers, upper case, guide roller, and switch panel assemblies
1. The lead wires of the auto-cutter assembly should be arranged as shown in the second part
of the illustration below.
2. Apply G-31 to both of the paper roll receive rollers.
3. Attach the paper roll receive rollers to the lower case.
4. While holding the auto-cutter as shown in the illustration, attach the upper case to the lower
case and secure it with the screws.
5. Apply G-31 to both ends of the guide roller.
6. Attach the guide roller to the upper case.
5-40 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
7. Remove any dust and dirt from the switch panel mounting surface and paste the switch
panel on the upper case.
Apply G-31
CPT-B (M3x12)
CPT-B (M3x12)
[0.59 to 0.78 N • m
[6 to 8 kgf • cm)]
Switch panel
Guide roller
Upper case
Apply G-31
Apply G-31
Paper roll
receiver rollers
Lower case
Rev. B
Disassembly, Assembly, and Adjustment 5-41
Confidential
5-42 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 9 (Case Unit)
Interface circuit board assembly and connector plate
1. Turn over the printer.
2. Attach the connector plate to the interface circuit board assembly and secure with the
hexagon lock screws (serial interface) or the CPS-tite screws (parallel interface).
3. Connect the interface circuit board assembly to the main circuit board assembly and secure
with the screws
Serial Interface.
CP(0) (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Hexagon
lock screws
[0.39 to 0.59 N • m
(4 to 6 kgf • cm)]
Connector plate
CP(0) (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Interface circuit
board assembly
Main circuit board assembly
Rev. B
Disassembly, Assembly, and Adjustment 5-43
Confidential
Parallel Interface
CPS-tite(M3✕6)
(4 to 6 kgf • cm)
Interface circuit
board assembly
✔
Check that the interface board assembly is firmly connected to the main circuit board
assembly.
5-44 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main Assembly 10 (Case Unit)
Lower plate, ROM cover, and rubber foot assembly
The procedures in this section differ depends on if an EP-ROM is used or a flash memory is used
on the main circuit board. See Addendum 1 in this manual for more detail about the main circuit
board.
For EP-ROM equipped main circuit board
1. Attach the lower plate to the lower case and secure it with the screws.
Note:
There are two different lower plates, one has an L-shaped hole, and the other has a rectangle hole to
attach the ROM cover. Use the lower plate having L-shaped hole for the printer with EP-ROM
equipped main circuit board. See Addendum 2 for the description about the change on the lower plate.
2. Affix the ROM spacer to the ROM cover, then attach the ROM cover to the lower plate and
secure it with the screws.
3. Attach the rubber feet to the lower case. For the rubber foot attached to the front of the
printer, turn the foot lightly until it stops.
CPS-tite (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Rubber foot
Rubber foot
(at the front
of the printer)
Lower case
ROM spacer
Lower plate
ROM cover
Rev. B
Disassembly, Assembly, and Adjustment 5-45
Confidential
For flash memory equipped main circuit board
1. Attach the lower plate to the lower case and secure it with the screws.
2. Attach the ROM cover to the lower plate and secure it with the screws.
3. Attach the rubber feet to the lower case. For the rubber foot attached to the front of the
printer, turn the foot lightly until it stops.
CPS-tite (M3x6)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
Rubber foot
Rubber foot
(at the front
of the printer)
Lower case
Lower plate
ROM cover
Main Assembly 11 (Case Unit)
Main cover assembly
1. Secure the hinge assembly to the main cover assembly with the screws (2 portions).
5-46 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
2. Secure the hinge assembly of the main cover assembly to the upper case with the screws (2
portions).
Main cover assembly
CPT-B (3x12)
(0.59 to 0.78 N • m (6 to 8 kgf • cm)]
Hinge assembly
CPT-B (3x12)
(0.59 to 0.78 N • m (6 to 8 kgf • cm)]
Upper case
Main Assembly 12 (Case Unit)
Near-end detector assembly (optional)
1. Attach the near-end detector lever to the near-end detector frame.
Rev. B
Disassembly, Assembly, and Adjustment 5-47
Confidential
2. Connect the lead wire assembly’s connector to the near-end detector and attach it to the
near-end detector frame with the screw.
CBB-tite (M2x8)
[0.1 to 0.2 N • m
(1 to 2 kgf • cm)]
Near-end detector
Lead wire assembly
Near-end detector
frame
Near-end detector
lever
3. Decide whether you want to install the spacers.
The amount (A) of paper remaining (including the paper roll core) when the near-end
detector senses a paper near-end is changed by the spacers.
d
A
The amount (A) with the spacers: 3 to 4 mm (0.12 to 0.16”)
The amount (A) with the spacers: 6 mm (0.24”)
The value of (A) is obtained by calculation only. Therefore, it may not be appropriate for all
printers.
5-48 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
4. Attach the spacers (if desired) and near-end detector assembly to the lower case and secure
them with the screws. Make sure the spacers are positioned in the correct direction, as
shown in the illustration.
Connector CN11
Round corner
Round corner
of spacer
Near-end detector assembly
CPT-B (M3x12)
[0.59 to 0.78 N • m
(6 to 8 kgf • cm)]
5. Insert the near-end detector’s lead wires into the connector.
Near-end detector’s
lead wires
✔
Make sure to arrange the lead wires as shown in the illustration.
6. The inner diameter of the paper core should be 10.5 to 12.5 mm (0.41 to 0.49”).
Rev. B
Disassembly, Assembly, and Adjustment 5-49
Confidential
✔
After assembling the near-end detector assembly, make sure the near-end detection lever
moves smoothly.
Adjustment
Platen gap adjustment
1. Turn the ribbon frame knob in the direction of the arrow to remove the ribbon frame
assembly from the printer and remove the manual cutter.
2. Move the print head unit so that it is 1 to 2 cm (0.39 to 0.79”) from portion A of the paper
hold plate spring and insert the scaling gauge between the print head unit and platen.
3. Measure the space and if the value is out of the standard range [0.55 mm ± 0.05 mm (0.022”±
0.002”)], turn the adjustment roller shaft holders to get a value within the specified range.
5-50 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
4. Perform the adjustment at two positions.
Ribbon frame assembly
Ribbon frame knob
Portion A
Scaling guage
Paper hold
plate spring
Wide
Narrow
Print head unit
Platen
Adjustment roller
shaft holder
Rev. B
Disassembly, Assembly, and Adjustment 5-51
Confidential
5-52 Disassembly, Assembly, and Adjustment
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Appendix
RS-485 Serial Interface
Data transmission:
Bit serial
Synchronization:
Asynchronous
Handshaking:
Depends on the DIP switch settings
(DTR/DSR or XON/XOFF control )
Signal levels:
2.0 V to 5.0 V: Logic 1
0.0 V to 0.8 V: Logic 0
Baud rates:
Depends on the settings of the TM series printer
(2400 to 19200)
Data word lengths:
Depends on the settings of the TM series printer
(7 or 8 bits)
Parity settings:
Depends on the settings of the TM series printer
(None, even, odd)
Stop bits:
Depends on the settings of the TM series printer
(1 or more)
NOTES:
❏ Handshaking is set through the DIP switches on TM series printers. The choices indicated in parentheses above
are typical choices or a typical range of choices supported by TM series printers.
❏ DR1 > DR2 CS1 > CS2 indicates that:
Channel 1 is HIGH.
Channel 2 is LOW.
❏ DR1 < DR2 CS1 < CS2 indicates that:
Channel 2 is HIGH.
Channel 1 is LOW.
Signal levels and communication control functions
Rev. B
CS1
CS2
Function
H
L
Communication is available
L
H
Communication is not available
Appendix A-1
Confidential
If the electric potential of CS1 is higher than CS2, the TM series printer is ready for
communication (the host is ready to receive data). If the electric potential of CS1 is lower than
CS2, the TM series printer is not ready for communication (the host is not ready to receive data).
DR1
DR2
Function
H
L
Communication is available
L
H
Communication is not available
If the electric potential of DR1 is higher than DR2, the TM series printer is ready for
communication (the host is ready to receive data). If the electric potential of DR1 is lower than
DR2, the TM series printer is not ready for communication (the host is not ready to receive data).
A-2 Appendix
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
RS-485 interface connector pin assignments and functions
Pin number
Signal name
I/O
Function
1
FG
—
Frame ground
2
SD1
O
Transmit data
3
RD2
O
Transmit data
4
RD1
I
Receive data
5
RD2
I
Receive data
7
SG
—
Signal ground
8
RD1
O
1) When DTR/DSR is selected, this signal indicates whether the host
computer is BUSY or READY. DR1 > DR2 indicates the printer is READY
and DR1 < DR2 indicates the printer is BUSY. The BUSY condition can be
changed, depending on the off-line conditions set by the DIP switches.
When the DTR/DSR control is selected, the printer goes into the BUSY
state (DR1 < DR2) under the following conditions:
DIP SW Settings
Off line
Conditions
ON
OFF
1. During the period from when power is turned
on (including resetting using the interface) to
when the printer is ready to receive data.
BUSY
BUSY
2. During the self-test.
BUSY
BUSY
3. When the cover is open.
—
BUSY
4. During paper feeding using the paper FEED
button.
—
BUSY
5. When the printer stops printing due to a
paper-end.
—
BUSY
6. When an error has occurred.
—
BUSY
7. When the receive buffer becomes full.
BUSY
BUSY
2) When XON/XOFF control is selected:
This signal indicates whether the printer is correctly connected and
ready to receive data. DR1 > DR2 (READY) indicates the printer is ready
to receive data. The signal is always DR1 > DR2, except in the following
cases:
❏ During the period after the power is turned on until the printer is
ready to receive data.
❏ During the self test.
10
11
CS1
CS2
I
This signal indicates whether the host computer is BUSY or READY.
CS1 > CS2 indicates the printer is READY and CS1 < CS2 indicates the
printer is BUSY.
1) When DTR > DSR is selected:
The signal is checked and data is transmitted only when the host is
ready to receive data (READY), except for transmissions by GS ENQ, DLE
EOT, or GS a.
2) When XON/XOFF control is selected:
Transmits data regardless of the status of this signal.
NOTES:
❏ Receive buffer full state differs depending on the printer models. Refer to the specifications for the printers.
❏ The data received is ignored when the space in the receive buffer is 0 byte.s
Rev. B
Appendix A-3
Confidential
XON/XOFF Transmission Timing
When XON/XOFF control is selected by the DIP switch, the printer transmits XON/OFF to the
host according the table below.
NOTE:
❏ For the different models, XON/XOFF transmission timing differs, depending on the settings of the off-line
conditions by the DIP switches. Refer to the specifications for the printers.
XON/XOFF transmission timing
Off-line status
DIP SW status
Printer status
XON
transmission
XOFF
transmission
ON
OFF
• When the printer goes on line after turning on the
power or reset using the interface.
Transmission
B
Transmission
• When the receive buffer is released from the bufferfull state.
Transmission
Transmission
• When the printer switches from off line to on line (*1).
—
Transmission
• When the printer recovers from an error through a
command.
—
Transmission
• When the receive buffer becomes full.
Transmission
Transmission
• When the printer switches from on line to off line (*2).
Transmission
Transmission
(*1) ON is not transmitted when the receive buffer is full.
(*2) XOFF is not transmitted when the receive buffer is full.
NOTE:The XON code is 11H and the XOFF code is 13H.
Data Format When Using RS-485
Transmission data (8 bits, no parity)
START
STOP
1
2
3
4
5
6
7
8
RS-485 Communication data format
"H" indicates:
Printer transmission data
Printer reception data
A-4 Appendix
SD1 < SD2
RD1 < RD2
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
"L" indicates:
Printer transmission data
Printer reception data
SD1 > SD2
RD1 > RD2
The transmission data is H = 1, L = 0
Note: This format is used when the UART for RS-232 is connected to the RS-485 driver.
Printer reception data level
RD1
RD2
Read data
H
L
Receiving data line is at the LOW level
L
H
Receiving data line is at the HIGH level
Printer transmission data level
Rev. B
SD1
SD2
Send data
H
L
Sending data line is at the LOW level
L
H
Sending data line is at the HIGH level
Appendix A-5
Confidential
Parts Layout
Main circuit board
There are three types for the main circuit board parts layout, type D, AD, and CD. To distinguish
the types, see Addendum 1 of this manual.
Main circuit board (type D)
There are two different parts layouts for the D-type main circuit board. One is for the board
using standard size of devices like a resistor having lead wires on its both sides. The other is for
the new board using small size of devices called chip device which does not have any lead wires.
This is the layout for the D-type board using standard size of devices:
A-6 Appendix
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
This is the layout for the D-type board using chip devices:
Rev. B
Appendix A-7
Confidential
Main circuit board (type AD)
A-8 Appendix
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Main circuit board (type CD)
Rev. B
Appendix A-9
Confidential
RS-232 Serial Interface Circuit Board
A-10 Appendix
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
IEEE 1284 Parallel Interface Circuit Board
Rev. B
Appendix A-11
Confidential
RS-485 Serial Interface Circuit Board
A-12 Appendix
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Appendix
Circuit Diagrams
Main Circuit Board
There are three types for the main circuit board diagram, type D, AD, and CD. To distinguish the types, see Addendum 1 of this manual.
Rev. B
Appendix A-13
Confidential
TM-U200 Series (Type B) Service Manual
Main circuit board diagram (type D)
There are two different diagrams for the D-type main circuit board diagram. One is for the board using standard size of devices like a resistor having lead wires on its both sides. The other is for the new board using small size
of devices called chip device which does not have any lead wires.
This is the diagram for the D-type board using standard size of devices:
+5V
+5V
+5V
DSR RST
#25 RST
#RST
+5V
+24B
+5V
R27
R49
DSR OR #25
R50
+
2
4
B
Q31
D26
CR A/DSW1
D25
Q15
U9
1
C42
+
5
V
R44
IN
3
Q32
D14
5
OUT
C
NC
GND
D1
#4
DSW1
U5
GND
21
WR
ALE
RD
RD
33
60
61
RESET
X1
ALE
RD
WR
X2
24
PF D/DSW8
PF C/DSW7
PF B/DSW6
PF A/DSW5
CR D/DSW4
CR C/DSW3
CR B/DSW2
CR A/DSW1
GND
25
X1
2
MCE
MCE
C15
29
28
27
17
P77
P76
P75
P71
A[8..18]
CNN18
RM6
W
R
JN2
A
1
8
2
3
4
5
C24
A18
A17
A16
U7
C25
UN11
DK2
#
R
S
T
CLK/DTR
RTS
DET
CTS
R14
R1
R43
R52
1
JN1
#RST
DSR RST
#25 RST
RES
RD
SD
A17
A14
A13
A8
A9
A11
RD
A10
PCE
AD7
AD6
AD5
AD4
AD3
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VCC
WE/A18
A17
A14
A13
A8
A9
A11
OE
A10
CE
DQ7/D7
DQ6/D6
DQ5/D5
DQ4/D4
DQ3/D3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A18/NC
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0/D0
DQ1/D1
DQ2/D2
GND
1
0
U8
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
AD0
AD1
AD2
A14
A13
A8
A9
A11
RD
A10
MCE
AD7
AD6
AD5
AD4
AD3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
A14
A13
A8
A9
A11
OE
A10
CE
D7
D6
D5
D4
D3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
GND
Q
3
4
7
8
D
13
14
17
V
C
C
2
0
A11
A10
A9
A8
46
45
44
43
120nS
G
N
D
AD3
AD2
AD1
AD0
38
37
36
35
RD
CLK/DTR
SD
18
19
20
31
13
77
79
16
DET
RES
CTS
RTS
AD[0..7]
Q16
D22
A[0..7]
GND
P G + + +
. N 2 5 2
G D 4 V 4
A
I
N
RD
CLK/DTR
SD
R10
R11
R12
+5V
Q29
1
CN2
SG
DKD 2P
+24V
DKD SW
DKD 1P
FG
6
5
4
3
2
1
P.G
DK2
+24A
DKS
DK1
R47
9
8
DK1
7
6
DK2
5
4
1
3
5
2
4
+5V
D8
DET
RES
RTS
CTS
DKD1
R48
3
AD3
AD2
AD1
AD0
P72/RXD1
P73/SCLK1
P74/TXD1
P81/INT0
P66/AN6
P54/INT2/TI5
P55/WAIT/TO1
P70
DKD1
DKD2
DK S
9
6
7
4
5
PFCOM SW
CRCOM SW
+24COM SW
76
74
73
PLED/DSW0
ELED/DSW9
PF SW
80
1
32
D46
55
54
53
52
CR D/DSW4
CR C/DSW3
CR B/DSW2
CR A/DSW1
Q38
Q28
WDTOUT
R13
R28
72
71
70
69
68
67
66
65
64
P50
P47
P46
P45
P44
P43
P42
P41
P40
Q34
Q19
Q18
Q20
+5V
+24DT
+
5
V
R8
R46
D50
D34
PF D/DSW8
+
2
4
B
9
6
7
4
5
3
2
1
0
R45
D27
C29
D28
+5V
G
N
D
C19
HEAD1
Q5
Q4
5
AVCC
AVCC
D32
HEAD5
6
C31
GND
75
34
15
+5V
Q7
Q6
C32
P80/WDTOUT
NMI
CLK
EA
9
6
7
4
5
2
3
+5V
P
L
E
D
/
D
S
W
0
E
L
E
D
/
D
S
W
9
Q35
D40
P E
L L
E E
D D
/ /
D D
S S
WW
0 9
Q13
D44
HEAD4
G +
N 5
D V
R20
+ +
2 2
4 4
B C
Q12
Q9
P
F
R41
Q36
Q8
S
W
+24DT
(POWER)
D13
SW2
D42
GND
R15
(PAPER)
D12
8
6
4
2
Q11
7
5
3
1
8
9
6
7
4
D43
HEAD8
D11
1
RM4
(FEED)
R55
1
G
N
D
D41
HEAD7
1
1
5
2
(ERROR)
C17
5
2
+24COM SW
D47
VIN
VOUT
SW
G SEN
N
D
C14
+24A
HEAD COM
A/C COM
DKD COM
3
+24A
+24B
+24C
+5V
GND
4
R40
+5V
RE
C45
+5R
CN8
R36
1
2
3
4
REC
C16
R37
Q2
HP DET
R38
HPC
1
2
3
4
+5V
H.P
GND
R.E
R39
GND
CRCOM SW
D7
QM2
2
+24A
+24B
+24C
+5V
GND
1
R6
+
2
4
A
3
1
0
D45
2
2
D4
U2
+24DT
FG
#2
#4
#6
#8
COM(#4,6,8)
#9
COM(#1,2,9)
THEM1
THEM2
COM(#3,5,7)
#5
#7
#1
#3
HEAD3
R5
G
N
D
CN7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
0
GND
+
2
4
D
T
U2-U4
with heat sink
8
6
4
2
D39
HEAD2
C4
78
51
23
VSS
VSS
VSS
1
8
RM3
7
5
3
1
HEAD6
VCC
VCC
VCC
QM1
D38
C30
Q10
Q1
D10
+24C
HEAD9
GND
(ROTOR)
PF A
PF C
PF COM
PF B
PF D
1
2
3
4
5
R19
AC RST
AC1/DSEL
AC2/DSEL
R56
Q24
1
2
3
4
5
HD T
R54
+5V
CN6
8
D37
WDTOUT
R59
8
6
4
2
R18
C33
+24A
+5V
GND
Q27
QM4
1
7
5
3
1
PF B/DSW6
+5V
C39
+24A
+5V
GND
D35
D33
HEAD9
HEAD1
HEAD2
HEAD3
HEAD4
HEAD5
HEAD6
HEAD7
HEAD8
14
3
4
DKS
F.G
PF A/DSW5
PF C/DSW7
7
V DTC
8 HD TEMP
9
NE
11
RE
12
HP DET
P67/AN7
P100
P101
P56/INT3/TI2
P57/TO3
P82
DK S
D2
QM3
+24C
P60/AN0
P61/AN1
P62/AN2
P64/AN4
P65/AN5
P53/INT1/TI4
P52/TO5
P51/TO4
30
2
22
26
R29
AC2/DSEL
(ROTOR)
CR A
CR C
CR COM
CR B
CR D
1
2
3
4
5
Q39
RM2
P32
P33
P63/AN3
DKD2
PF D/DSW8
PF C/DSW7
PF B/DSW6
PF A/DSW5
1
2
3
4
5
3
1
0
D36
Q21
AVSS
62
63
10
59
58
57
56
CN5
8
2
D24
2
1
0
QM5
P.G
+24IN
D31
CR D/DSW4
D23
HEAD[1..9]
Q30
D15
8
6
4
2
CR/PF[A..D] & DSW[1..8]
AD7
AD6
AD5
AD4
RM5
P G + + +
. N 2 5 2
G D 4 V 4
A
I
N
Q17
D21
AC1/DSEL
P23/M03
P22/M02
P21/M01
P20/M00
A11
A10
A9
A8
C40
+
5
V
U8 with IC SOCKET
GND
A15
A14
A13
A12
42
41
40
39
AD7
AD6
AD5
AD4
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
18
19
2
5
6
9
12
15
16
50
49
48
47
P93/M13
P92/M12
P91/M11
P90/M10
11
1
G
G
N OC
D
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
AD0
AD1
AD2
A15
A14
A13
A12
120nS
DKS
DK1
7
5
3
1
CR B/DSW2
D20
#8
#1
A18
A17
A16
CN4
1
RM1
C26
4
D9
D30
D19
C28
GND
WR
PCE
R21
R25
R24
D29
D18
PLED/DSW0
ELED/DSW9
UN12
R26
Q14
CR C/DSW3
D16
#1
D # #
S 2 R
R 5 S
T
R R
S S
T T
RD
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
DSW2
D17
C27
4
2
D48
NE
R53
R16
R7
1
2
C44
C46
C22
D3
Q3
GND
GND
C23
U3
PFCOM SW
D49
+24A
5
+24IN
P.G
2
F1
VIN
VOUT
SW
G SEN
N
D
D6
+24B
CR COM
3
CN1
+30V
GND
N.C
F.G
CN11
U6
AC1/DSEL
AC2/DSEL
C7
1
2
R57
R58
125V,T2A
1
2
3
4
1
2
3
SH
+24DT
1
2
NEC
4
1
IN1
IN2
C6
VM
OUTA
OUTA
GND
7
3
5
4
1
2
N.E
GND
1
2
GND
GND
C10
+5V
C20
C11
CN9
R34
P.G
GND
C12
L1
R35
R17
AC RST
D5
1
2
3
4
1
2
3
4
AC M1
AC M2
GND
AC RES
1
2
U4
C21
5
R9
2
VIN
VOUT
SW
G SEN
N
D
C13
F.G
FG
3
+24C
PF COM
4
GND
C9
1
GND
C8
GND
R42
+5V
U1
SW1
+5I
1
10
2
IN
OUT
LIN
+5V
1
6
1
G
5
C1
C41
C5
C3
GND
C2
GND
Rev. B
1
Appendix A-14
Confidential
TM-U200 Series (Type B) Service Manual
This is the diagram for the D-type board using chip devices:
+5V
+5V
+5V
DSR RST
#25 RST
#RST
+5V
+24B
+5V
R27
R49
DSR OR #25
R50
+
2
4
B
Q31
D26
CR A/DSW1
D25
Q15
U9
1
+
5
V
IN
3
C42
R44
D14
5
OUT
C
NC
GND
Q32
D1
#4
C26
DSW1
U5
GND
WR
GND
21
WR
ALE
RD
RD
4
33
60
61
MCE
RESET
X1
ALE
RD
WR
X2
MCE
C15
29
28
27
17
P77
P76
P75
P71
A[8..18]
CNN18
RM6
W
R
JN2
2
3
4
5
C24
A18
A17
A16
U7
C25
UN11
DK2
#
R
S
T
CLK/DTR
RTS
DET
CTS
R14
R1
R43
R52
1
A
1
8
JN1
#RST
DSR RST
#25 RST
RES
RD
SD
A17
A14
A13
A8
A9
A11
RD
A10
PCE
AD7
AD6
AD5
AD4
AD3
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VCC
WE/A18
A17
A14
A13
A8
A9
A11
OE
A10
CE
DQ7/D7
DQ6/D6
DQ5/D5
DQ4/D4
DQ3/D3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A18/NC
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0/D0
DQ1/D1
DQ2/D2
GND
1
0
U8
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
AD0
AD1
AD2
A14
A13
A8
A9
A11
RD
A10
MCE
AD7
AD6
AD5
AD4
AD3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
A14
A13
A8
A9
A11
OE
A10
CE
D7
D6
D5
D4
D3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
GND
24
X1
120nS
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
18
19
2
5
6
9
12
15
16
Q
3
4
7
8
D
13
14
17
V
C
C
2
0
50
49
48
47
A11
A10
A9
A8
46
45
44
43
AD7
AD6
AD5
AD4
42
41
40
39
AD3
AD2
AD1
AD0
38
37
36
35
RD
CLK/DTR
SD
18
19
20
31
13
77
79
16
A15
A14
A13
A12
G
N
D
DET
RES
CTS
RTS
AD[0..7]
Q16
D22
A[0..7]
GND
P G + + +
. N 2 5 2
G D 4 V 4
A
I
N
RD
CLK/DTR
SD
R10
R11
R12
+5V
Q29
1
SG
DKD 2P
+24V
DKD SW
DKD 1P
FG
6
5
4
3
2
1
P.G
DK2
+24A
DKS
DK1
R47
9
8
DK1
7
6
DK2
5
4
1
3
5
2
4
+5V
D8
DET
RES
RTS
CTS
DKD1
R48
3
7
P72/RXD1
P73/SCLK1
P74/TXD1
P81/INT0
P66/AN6
P54/INT2/TI5
P55/WAIT/TO1
P70
DKD1
DKD2
DK S
PFCOM SW
CRCOM SW
+24COM SW
76
74
73
PLED/DSW0
ELED/DSW9
PF SW
80
1
32
D46
CR D/DSW4
CR C/DSW3
CR B/DSW2
CR A/DSW1
72
71
70
69
68
67
66
65
64
P50
P47
P46
P45
P44
P43
P42
P41
P40
Q28
WDTOUT
R13
R28
Q34
3
Q19
Q18
D35
D33
Q20
+5V
+24DT
+
5
V
R8
R46
D50
7
5
2
3
1
0
R45
D27
C29
D28
+5V
C19
HEAD1
Q5
Q4
5
AVCC
D32
HEAD5
6
C31
GND
75
34
15
+5V
Q7
Q6
C32
P80/WDTOUT
NMI
CLK
EA
9
6
7
4
5
2
3
P
L
E
D
/
D
S
W
0
E
L
E
D
/
D
S
W
9
Q35
D40
P E
L L
E E
D D
/ /
D D
S S
WW
0 9
+5V
Q13
D44
HEAD4
G +
N 5
D V
R20
+ +
2 2
4 4
B C
1
(POWER)
D13
Q12
Q9
P
F
R41
Q36
Q8
S
W
SW2
D42
GND
R15
(PAPER)
D12
1
RM4
(FEED)
8
6
4
2
Q11
7
5
3
1
8
9
6
7
4
D43
HEAD8
D11
G
N
D
D41
HEAD7
R55
1
5
2
(ERROR)
C17
2
2
D4
U2
5
2
+24COM SW
D47
VIN
VOUT
SW
G SEN
N
D
C14
+24A
HEAD COM
A/C COM
DKD COM
3
+24A
+24B
+24C
+5V
GND
4
R40
+5V
RE
R6
C45
+5R
CN8
R36
1
2
3
4
REC
C16
R37
Q2
HP DET
R38
HPC
1
2
3
4
+5V
H.P
GND
R.E
R39
GND
CRCOM SW
D7
QM2
2
+24A
+24B
+24C
+5V
GND
1
+
2
4
A
3
1
0
D45
R5
+24DT
FG
#2
#4
#6
#8
COM(#4,6,8)
#9
COM(#1,2,9)
THEM1
THEM2
COM(#3,5,7)
#5
#7
#1
#3
HEAD3
1
+24DT
G
N
D
CN7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
0
GND
+
2
4
D
T
U2-U4
with heat sink
8
6
4
2
D39
HEAD2
C4
78
51
23
VSS
VSS
VSS
1
8
RM3
7
5
3
1
HEAD6
VCC
VCC
VCC
QM1
D38
C30
Q10
Q1
D10
+24C
HEAD9
GND
(ROTOR)
PF A
PF C
PF COM
PF B
PF D
1
2
3
4
5
R19
AC RST
AC1/DSEL
AC2/DSEL
R56
Q24
1
2
3
4
5
HD T
R54
+5V
9
6
D37
WDTOUT
R59
CN6
8
4
D34
PF D/DSW8
+
2
4
B
8
6
4
2
R18
C33
+24A
+5V
GND
Q27
QM4
1
7
5
3
1
PF B/DSW6
+5V
C39
+24A
+5V
GND
PF A/DSW5
G
N
D
DKS
F.G
Q39
PF C/DSW7
HEAD9
HEAD1
HEAD2
HEAD3
HEAD4
HEAD5
HEAD6
HEAD7
HEAD8
14
3
4
AVCC
P56/INT3/TI2
P57/TO3
P82
DK S
D2
(ROTOR)
CR A
CR C
CR COM
CR B
CR D
1
2
3
4
5
QM3
+24C
P67/AN7
P100
P101
P53/INT1/TI4
P52/TO5
P51/TO4
30
2
22
26
R29
AC2/DSEL
7
V DTC
8 HD TEMP
9
NE
11
RE
12
HP DET
P60/AN0
P61/AN1
P62/AN2
P64/AN4
P65/AN5
P32
P33
P63/AN3
DKD2
55
54
53
52
Q38
RM2
AVSS
62
63
10
PF D/DSW8
PF C/DSW7
PF B/DSW6
PF A/DSW5
1
2
3
4
5
5
1
0
D36
Q21
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
59
58
57
56
2
1
0
QM5
P.G
+24IN
9
6
2
D24
CN5
8
4
D31
CR D/DSW4
D23
HEAD[1..9]
Q30
CN2
8
6
4
2
CR/PF[A..D] & DSW[1..8]
RM5
D15
Q17
D21
AC1/DSEL
P23/M03
P22/M02
P21/M01
P20/M00
A11
A10
A9
A8
C40
+
5
V
U8 with IC SOCKET
GND
P G + + +
. N 2 5 2
G D 4 V 4
A
I
N
7
5
3
1
CR B/DSW2
D20
#8
PF D/DSW8
PF C/DSW7
PF B/DSW6
PF A/DSW5
CR D/DSW4
CR C/DSW3
CR B/DSW2
CR A/DSW1
GND
25
P93/M13
P92/M12
P91/M11
P90/M10
11
1
G
G
N OC
D
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
AD0
AD1
AD2
A15
A14
A13
A12
120nS
DKS
DK1
1
#1
2
A18
A17
A16
CN4
D9
D30
D19
RM1
UN12
R21
R25
R24
D29
D18
PLED/DSW0
ELED/DSW9
C28
PCE
R26
Q14
CR C/DSW3
D16
#1
D # #
S 2 R
R 5 S
T
R R
S S
T T
RD
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
DSW2
D17
C27
4
2
D48
NE
R53
R16
R7
1
2
C44
C46
C22
D3
Q3
GND
GND
C23
U3
PFCOM SW
D49
+24A
5
+24IN
P.G
2
F1
VIN
VOUT
SW
G SEN
N
D
D6
CN1
+30V
GND
N.C
F.G
CN11
+24B
CR COM
3
U6
AC1/DSEL
AC2/DSEL
C7
1
2
R57
R58
125V,T2A
1
2
3
4
1
2
3
SH
+24DT
1
2
NEC
4
1
IN1
IN2
C6
VM
OUTA
OUTA
GND
7
3
5
4
1
2
N.E
GND
1
2
GND
GND
C10
+5V
C20
C11
CN9
R34
P.G
GND
C12
L1
R35
R17
AC RST
D5
1
2
3
4
1
2
3
4
AC M1
AC M2
GND
AC RES 1
2
U4
C21
5
R9
2
VIN
VOUT
SW
G SEN
N
D
F.G
FG
3
+24C
PF COM
4
GND
1
C13
C9
GND
C8
GND
R42
+5V
U1
SW1
+5I
1
10
2
IN
OUT
LIN
+5V
1
6
1
G
5
C1
C41
C5
C3
GND
C2
GND
Rev. B
1
Appendix A-15
Confidential
TM-U200 Series (Type B) Service Manual
For the main circuit board that the DSW2 is type AD
+24B
DSR RST
#25 RST
CLKREQ
C15
PCE2
TP161
PCE1
TP160
C18
A16/DSW11
A15
A14
A13
A12
A11
A10
A9
#RST
DSR RST
#25 RST
RES/DSW6
RD
SD
R26
R21
R25
R24
WR
+5V
+5V
C41
A19/DSW8
A18/BTDET
A8
A7
A6
A5
A4
A3
A2
CLK_REQ
CLK/DTR
RTS
DET
CTS
R104
R14
R1
R43
R52
DK2
U101
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE
RESET
NC
NC
RY/BY
A18/NC
A17
A7
A6
A5
A4
A3
A2
A1
A16
BYTE
VSS
D15/A-1
D7
D14
D6
D13
D5
D12
D4
VCC
D11
D3
D10
D2
D9
D1
D8
D0
OE
VSS
CE
A0
C24
+5V C40
AD6
C25
AD5
AD4
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A13
A8
A9
A11
RD
A10
PCE1
AD7
AD6
AD5
AD4
AD3
AD3
AD2
AD1
AD0
RD
PCE2
A1
VCC
A14
A13
A8
A9
A11
OE
A10
CE
D7
D6
D5
D4
D3
TP7
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DK1
DK1
#RST
1
Q114
3
R117
A7
A6
A5
A4
A3
A2
A1
A0
2
5
6
9
12
15
16
19
20
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
D0
D1
D2
D3
D4
D5
D6
D7
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
3
4
7
8
13
14
17
18
P.G
2
DK2
TP123
R118
1
TP27
3
Q115
1
DM133
6
2
5
3
4
TP124
2
3
1
5
38
37
36
35
+24IN
DKD1
PLED/DSW0
ELED/DSW9
PF SW
62
63
10
76
74
73
80
1
32
TP56
WDTOUT
+5V
R13
Q34
DK S
5
TP36
5
2
D47
C14
SW
TP35
2
5
TP37
4
DM128
1
3
2
P50
P47
P46
P45
P44
P43
P42
P41
P40
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
72
71
70
69
68
67
66
65
64
7
P60/AN0 8
P61/AN1 9
P62/AN2 11
P64/AN4 12
P65/AN5
HEAD9
HEAD1
HEAD2
HEAD3
HEAD4
HEAD5
HEAD6
HEAD7
HEAD8
1
2
3
4
1
30
2
22
26
SEN
4
14
P67/AN7 3
P100 4
P101
AVCC
AVSS
P32
P33
P63/AN3
R45
5
C31
C32
AVCC
HEAD1
C33
HEAD5
2
3
5
TP138
1
TP65
3
HEAD2
TP66
5
Operation Panel
TP38
VIN
SW
VOUT
SEN
CR COM
4
TP54
SW2
GND
SW
SEN
F.G
4
POWER SW
SW1
R114
2
1
10
4
5
2
3
CN6
PF
PF
PF
PF
PF
1
2
3
4
5
A
C
COM
B
D
D10
3
2
4
3
TP68
3
HEAD7
TP69
5
1
D12
D11
GREEN
RED
RED
(ERROR)
DM134
4
2
3
TP153
RM101
DM131
1
5
2
4
3
5
6
7
8
8
9
6
7
4
5
2
3
2TP147
5
TP10
HP DET
TP11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
TP155
6
DM132
1
5
2
4
3
RM102
4
3
2
1
C17
TP151
8
9
6
7
4
5
2
3
TP152
TP148
R40
SENSOR
+5R
1W
R36
REC
1
2
3
4
R37
R38
HPC
R53
TP12
QM108
2 TP15 3
5
1
2
TP16
5
1
R108
TP71
TP72
CN8
1
2
3
4
+5V
H.P
GND
R.E
R16
C44
C46
R107
3
FG
#2
#4
#6
#8
COM(#4,6,8)
#9
COM(#1,2,9)
THEM1
THEM2
COM(#3,5,7)
#5
#7
#1
#3
1
(FEED)
AC2/DSEL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
QM2
5
6
7
8
C23
TP13
CN7
Q13
TP149
TP150
3
RE
R101
TP154
TP146
1
TP9
6
TP145
2
HEAD
QM1
4
3
2
1
TP144
Q101
QM106
TP70
1
1
DM129
4
2
3
C106
N.E SEN.
+24A
R106
C107
6
2
8
R109
4
TP78
R35
QM100
NEC
1
2
10
CN11
1
2
N.E
GND
7
3
C20
9
5
1
AUTO CUTTER
1
2
3
4
CN9
1
2
3
4
AC M1
AC M2
GND
AC RES
C21
+5V
U1
10
IN
G
1
7
C9
C8
+5I
6
PF COM
1
2
+24C
3
PF MOTOR
1
2
3
4
5
DM110
1
TP142
+5V
R56
D13
(PAPER)
R15
AC RST
D5
VOUT
2
R34
U4
9
3
2
PF_D
TP141
C22
QM113
VIN
5
R41
nPFCOM
R17
8
DM109
+5V
+5V
HEAD3
1
TP140
AC1/DSEL
C6
DM130
TP143
TP67
NE
TP40
QM109
(POWER)
C7
3
R39
C10
5
6
+5V
+5V
R54
+24B
3
3
2
PF_B
+5V
PF SW
TP53
R55
U3
5
1
+5V
DM108
1
TP139
PF SW
2
2
2
nPFCOM
+24A
+24B
+24C
5
TP75
QM104
HEAD6
HEAD4
P80/WDTOUT
NMI
CLK
EA
3
8
7
6
5
+5V
TP137
2
TP64
C4
C16
GND
L1
DM122
4
TP63
nPFCOM
+24A
+24B
+24C
D3
1
C11
C12
1
3
QM105
ELED/DSW9
A
C
COM
B
D
+24C
+5V
PLED/DSW0
CR
CR
CR
CR
CR
QM3
QM4
3
1
+5V
+5V
R8
C30
75
VCC 34
VCC 15
VCC
P56/INT3/TI2
P57/TO3
P82
5
CN5
1
2
3
4
5
HD T
C19
TP52
78
VSS 51
VSS 23
VSS
4
+24C
R19
GND
P53/INT1/TI4
P52/TO5
P51/TO4
7
DM107
1
TP73
TP74
TP76
C29
AC RST
AC1/DSEL
AC2/DSEL
6
6
1
2
3
4
5
TP101
1/16W
R18
TP14
P.G
1
OUT 6
LIN
C1
5
C2
C3
Rev. B
AVCC
TP51
P72/RXD1
P73/SCLK1
P74/TXD1
P81/INT0
P66/AN6
P54/INT2/TI5
P55/WAIT/TO1
P70
1
2
3
4
TP132
1
RM103
QM103
D50
9
TP50
V DTC
HD TEMP
NE
RE
HP DET
+5V
C45
+24DT
2
5
+5V
R46
8
2
R102
TP131
2
QM107
HEAD COM
A/C COM
DKD COM
3
1
F1
PF C/DSW7
+24DT
8
7
6
5
TP159
+5V
3
HEAD[1..9]
A11
A10
A9
A8
HEAD9
+24A
VOUT
1
R7
D6
1
2
3
SH
1
PF A/DSW5
D/DSW4
C/DSW3
B/DSW2
A/DSW1
4
3
2
CN1
5
Q117
+24DT
GND
4
TP34
nPFCOM
+30V
GND
N.C
F.G
AC1/DSEL
R29
TP49
HEAD8
VIN
R6
QM110
DC.CON.
2
TP31
D4
U2
TP55
PFCOM
3
2
+5V
R5
+24DT
CRCOM
AC2/DSEL
+5V
TP32
GND
2
Q1
+24COM SW
DKD1
DKD2
DK S
U2-U4
with heat sink
1
4
TP20
TP21
TP22
TP23
18
19
20
31
13
77
79
16
CR
CR
CR
CR
QM112
3
3
2
#1
4
DM121 TP158
1
TP57
1
+24A
R59
QM115
DET
CLK_REQ
CTS
RTS
DET
6
7 CLK_REQ
RTS
5
CTS
8
WDTOUT
3
TP17
TP18
TP19
PFCOM
CRCOM
+24COM SW
TP30
D108
+5V
A15
A14
A13
A12
A19/DSW8
PF_C/DSW7
RES/DSW6
PF A/DSW5
DM101
C39
TP79
P.G
RM5
RES/DSW6
RD
CLK/DTR
SD
+5V
DKS
P77
P76
P75
P71
X1
TP128
CR MOTOR
1
2
3
4
RM104
Q113
3
2
TP127
D9
TP156
TP157
QM102
+5V
1
DKD2
+5V
R28
F.G
+5V
3
2
4
1
TP29
R113
46
45
44
43
AD3
AD2
AD1
AD0
1
OC 11
G
TP28
QM111
A11
A10
A9
A8
42
41
40
39
10
4 RD
3 CLK/DTR
2 SD
1RES/DSW6
50
49
48
47
AD7
AD6
AD5
AD4
TP25
R112
P.G
DK2
+24AD
DKS
DK1
RM105
5
6
7
8
+5V
A15
A14
A13
A12
25
59
P93/M13 58
P92/M12 57
P91/M11 56
P90/M10
55
P23/M03 54
P22/M02 53
P21/M01 52
P20/M00
U7
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
AD0
AD1
AD2
A[0..7]
DKS
D15
6
5
4
3
2
1
+5V
R119
A14
AD[0..7]
DKD
SG
DKD 2P
+24V
DKD SW
DKD 1P
FG
A0
AD7
C104
P.G +24IN
CN2
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
MCE
MCE
X2
1
4
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
R105
R103
4
SG
NRESET
DSR_RESET
N25_RESET
HOST_CTS
RD
SD
SG
PG
+24V
+24V
PG
DK_P
DK_G
DK_2
+5V
SG
CLKREQ
CLKIN/DTR
RTS
DET
CTS
HOST_RTS
PG
+24V
+24V
PG
PG
DK_S
DK_1
2
CN4
R115
29
28
27
17
ALE
RD
WR
GND
24
4
I/F BOARD
C105
33
60
61
A19/DSW8
A18/BTDET
A17/DSW12
A16/DSW11
R111
R116
WR
A17/DSW12
ALE
RD
WR
TP4
U12
2
TP6 4
R110
X1
DM102
2
5
2
1
RD
WR
RESET
2
DSW1
3
DM120
1
3
10
21
3
4
A[8..19]
#8
A19/DSW8
PF_C/DSW7
RES/DSW6
PF A/DSW5
CR D/DSW4
CR C/DSW3
CR B/DSW2
CR A/DSW1
U5
+5V
#1
C26
TP62
CR D/DSW4
4
1
RES/DSW6
1
QM101
TP61
CR B/DSW2
3
2
DM103
1
TP48
1
TP126
10
CLKREQ
PLED/DSW0
ELED/DSW9
DM104
TP125
2
1
TP44
C27
#7
#6
CR C/DSW3
TP60
5
4
TP46
DSW2
#25 RSTO
DSR RSTO
A17/DSW12
A16/DSW11
2
3
2
CR A/DSW1
10
R44
6
OUT 8
NC 3
NC 4
GND
DM111
3
1
4
C28
IN
NC
NC
C
1
TP45
DM105
TP59
3
4
TP8
3
4
DSR
# 2#RST
5RST
RST
U9
7
1
2
5
C42
A19/DSW8
A18/BTDET
A17/DSW12
A16/DSW11
4
3
2
1
Q32
1
2
Q31
D26
TP2
RM6
5
6
7
8
TP43
C101
4
R50
+5V
R49
DSR OR #25
+5V
+5V
DM106
+5V
4
+5V
#RST
TP1
4
TP39
C5
Appendix A-16
Confidential
TM-U200 Series (Type B) Service Manual
For the main circuit board that the DSW2 is type CD
+24B
DSR RST
#25 RST
CLKREQ
C105
A16/DSW11
A15
A14
A13
A12
A11
A10
A9
R21
R25
R24
C41
A19/DSW8
A18/BTDET
A8
A7
A6
A5
A4
A3
A2
CLK_REQ
CLK/DTR
RTS
DET
CTS
R104
R14
R1
R43
R52
DK2
A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE
RESET
NC
NC
RY/BY
A18/NC
A17
A7
A6
A5
A4
A3
A2
A1
A16
BYTE
VSS
D15/A-1
D7
D14
D6
D13
D5
D12
D4
VCC
D11
D3
D10
D2
D9
D1
D8
D0
OE
VSS
CE
A0
C24
+5V C40
AD6
C25
AD5
AD4
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A13
A8
A9
A11
RD
A10
PCE1
AD7
AD6
AD5
AD4
AD3
AD3
AD2
AD1
AD0
RD
PCE2
A1
VCC
A14
A13
A8
A9
A11
OE
A10
CE
D7
D6
D5
D4
D3
TP7
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DK1
#RST
1
Q114
3
R117
A7
A6
A5
A4
A3
A2
A1
A0
2
5
6
9
12
15
16
19
20
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
D0
D1
D2
D3
D4
D5
D6
D7
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
3
4
7
8
13
14
17
18
P.G
2
DK2
TP123
R118
1
TP27
3
Q115
1
DM133
6
2
5
3
4
TP124
2
3
1
5
+24IN
62
63
10
PFCOM
CRCOM
+24COM SW
76
74
73
PLED/DSW0
ELED/DSW9
PF SW
80
1
32
TP56
WDTOUT
+5V
R13
Q34
TP36
5
2
D47
C14
CR D/DSW4
CR C/DSW3
CR B/DSW2
CR A/DSW1
DK S
SW
A11
A10
A9
A8
P50
P47
P46
P45
P44
P43
P42
P41
P40
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
P60/AN0
P61/AN1
P62/AN2
P64/AN4
P65/AN5
72
71
70
69
68
67
66
65
64
7
8
9
11
12
HEAD9
HEAD1
HEAD2
HEAD3
HEAD4
HEAD5
HEAD6
HEAD7
HEAD8
1
2
3
4
1
TP35
SEN
4
30
2
22
26
2
5
TP37
4
DM128
1
3
2
C45
1
R7
14
P67/AN7 3
P100 4
P101
AVCC
AVSS
P32
P33
P63/AN3
R45
TP52
5
C31
AVCC
HEAD1
DM122
4
2
3
C33
HEAD5
2
TP38
HEAD6
TP65
3
HEAD2
TP66
5
+5V
SW
VOUT
SEN
CR COM
4
GREEN
(POWER)
C7
TP54
D12
RED
(PAPER)
R15
SW2
U4
SEN
F.G
R114
2
1
10
5
2
3
PF
PF
PF
PF
PF
A
C
COM
B
D
D10
3
HEAD3
HEAD7
TP69
5
D11
RED
(ERROR)
DM134
4
2
3
TP153
RM101
DM131
1
5
2
4
3
5
6
7
8
8
9
6
7
4
5
2
3
2TP147
5
NE
TP12
TP155
6
DM132
1
5
2
4
3
RM102
4
3
2
1
C17
Q13
QM2
5
6
7
8
TP151
8
9
6
7
4
5
2
3
TP152
R40
SENSOR
+5R
1W
R36
REC
1
2
3
4
R37
R38
HPC
R53
QM108
3
2 TP15 3
5
1
TP16
2
5
1
R108
TP71
TP72
CN8
1
2
3
4
+5V
H.P
GND
R.E
R16
C44
C46
C23
TP13
FG
#2
#4
#6
#8
COM(#4,6,8)
#9
COM(#1,2,9)
THEM1
THEM2
COM(#3,5,7)
#5
#7
#1
#3
TP148
R107
AC2/DSEL
CN7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
TP10
TP11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
TP149
TP150
3
HP DET
R101
TP154
TP146
1
TP9
6
TP145
2
HEAD
QM1
4
3
2
1
TP144
Q101
QM106
TP70
1
1
DM129
4
2
3
C106
N.E SEN.
+24A
R106
C107
6
2
8
R109
4
TP78
R35
QM100
NEC
1
2
10
CN11
1
2
N.E
GND
7
3
C20
9
5
1
AUTO CUTTER
1
2
3
4
CN9
1
2
3
4
AC M1
AC M2
GND
AC RES
+5V
U1
10
IN
G
SW1
4
CN6
1
2
3
4
5
C9
POWER SW
1
7
PF COM
4
C8
+5I
6
C21
+24C
3
1
GND
VOUT
PF MOTOR
1
2
3
4
5
DM110
2
+5V
(FEED)
AC RST
D5
SW
3
+5V
R56
nPFCOM
VIN
4
R34
R17
9
3
TP142
C22
QM113
2
2
R41
C10
5
5
TP141
TP140
1
AC1/DSEL
C6
8
R39
TP40
QM109
D13
3
1
PF_D
TP139
+5V
TP68
3
1
+5V
+5V
R54
+24B
3
DM130
+5V
PF SW
TP53
R55
VIN
6
TP67
RE
Operation Panel
1
3
DM109
2
2
nPFCOM
+24A
+24B
+24C
2
1
PF_B
TP143
QM105
HEAD4
5
DM108
1
TP75
QM104
PF SW
U3
5
TP137
TP138
1
5
TP64
P80/WDTOUT
NMI
CLK
EA
3
A
C
COM
B
D
QM3
QM4
3
2
2
+5V
3
TP63
C4
C16
GND
L1
1
+5V
+5V
R8
C30
C32
ELED/DSW9
CR
CR
CR
CR
CR
+24C
+5V
PLED/DSW0
CN5
1
2
3
4
5
HD T
R19
C19
75
VCC 34
VCC 15
VCC
P56/INT3/TI2
P57/TO3
P82
5
+24C
C29
AC RST
AC1/DSEL
AC2/DSEL
78
VSS 51
VSS 23
VSS
4
DM107
1
TP73
8
7
6
5
TP74
TP76
GND
P53/INT1/TI4
P52/TO5
P51/TO4
7
TP50
V DTC
HD TEMP
NE
RE
HP DET
6
6
1
2
3
4
5
TP101
1/16W
R18
nPFCOM
+24A
+24B
+24C
D3
1
C11
C12
1
OUT 6
LIN
C1
5
C2
C3
Rev. B
AVCC
D50
TP51
P72/RXD1
P73/SCLK1
P74/TXD1
P81/INT0
P66/AN6
P54/INT2/TI5
P55/WAIT/TO1
P70
TP132
1
RM103
1
2
3
4
QM103
TP14
P.G
5
+5V
R46
+5V
+24DT
2
PF C/DSW7
QM107
HEAD COM
A/C COM
DKD COM
3
1
F1
1
+24DT
9
2
R102
TP131
2
HEAD[1..9]
4
3
D6
1
2
3
SH
5
HEAD9
+24A
VOUT
GND
4
TP34
2
CN1
AC1/DSEL
8
TP159
+5V
3
+24DT
VIN
R6
nPFCOM
+30V
GND
N.C
F.G
PF A/DSW5
TP31
D4
U2
5
QM110
DC.CON.
Q117
R5
TP55
PFCOM
TP49
2
8
7
6
5
QM102
+5V
HEAD8
GND
2
Q1
CRCOM
3
+5V
TP32
+24DT
+24COM SW
TP20
TP21
TP22
TP23
DKD1
DKD2
DK S
U2-U4
with heat sink
1
4
DET
CLK_REQ
CTS
RTS
18
19
20
31
13
77
79
16
AC2/DSEL
R29
2
3
2
QM112
DM121 TP158
1
3
TP57
1
+24A
R59
QM115
TP17
TP18
TP19
DET
6
7 CLK_REQ
RTS
5
CTS
8
WDTOUT
3
A15
A14
A13
A12
A19/DSW8
PF_C/DSW7
RES/DSW6
PF A/DSW5
DM101
#1
DKD2
TP30
D108
+5V
P77
P76
P75
P71
X1
C39
TP79
P.G
RM5
RES/DSW6
RD
CLK/DTR
SD
DKD1
+5V
DKS
46
45
44
43
38
37
36
35
+5V
R28
F.G
+5V
3
2
4
1
TP29
R113
A11
A10
A9
A8
AD3
AD2
AD1
AD0
1
OC 11
G
TP28
QM111
50
49
48
47
42
41
40
39
10
4 RD
3 CLK/DTR
2 SD
1RES/DSW6
A15
A14
A13
A12
AD7
AD6
AD5
AD4
TP25
R112
P.G
DK2
+24AD
DKS
DK1
RM105
5
6
7
8
+5V
4
DK1
29
28
27
17
25
59
P93/M13 58
P92/M12 57
P91/M11 56
P90/M10
55
P23/M03 54
P22/M02 53
P21/M01 52
P20/M00
U7
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
AD0
AD1
AD2
A[0..7]
DKS
D15
6
5
4
3
2
1
+5V
R119
A14
A0
AD7
AD[0..7]
DKD
SG
DKD 2P
+24V
DKD SW
DKD 1P
FG
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
MCE
C104
P.G +24IN
CN2
R105
R103
U101
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
WR
+5V
+5V
R116
MCE
X2
4
RM104
Q113
3
2
4
#RST
DSR RST
#25 RST
RES/DSW6
RD
SD
R26
R115
X1
ALE
RD
WR
1
+5V
1
4
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
SG
NRESET
DSR_RESET
N25_RESET
HOST_CTS
RD
SD
SG
PG
+24V
+24V
PG
DK_P
DK_G
DK_2
+5V
SG
CLKREQ
CLKIN/DTR
RTS
DET
CTS
HOST_RTS
PG
+24V
+24V
PG
PG
DK_S
DK_1
R111
TP160
WR
A19/DSW8
A18/BTDET
A17/DSW12
A16/DSW11
RESET
DM102
5
TP128
CR MOTOR
1
2
3
4
1
PCE1
C18
CN4
R110
TP161
33
60
61
3
2
DSW1
CR D/DSW4
TP127
2
D9
TP156
TP157
1
PCE2
ALE
RD
WR
TP4
U12
2
TP6 4
GND
24
#8
1
3
TP62
2
10
RD
WR
I/F BOARD
#1
CR B/DSW2
3
4
21
A17/DSW12
DM103
A19/DSW8
PF_C/DSW7
RES/DSW6
PF A/DSW5
CR D/DSW4
CR C/DSW3
CR B/DSW2
CR A/DSW1
1
2
C26
A[8..19]
C15
DM104
QM101
TP61
DM120
1
3
10
RES/DSW6
U5
+5V
#7
#6
CLKREQ
A17/DSW12
A16/DSW11
#25 RSTO
DSR RSTO
PLED/DSW0
ELED/DSW9
TP48
4
TP46
TP44
C27
TP126
1
4
1
C28
R44
6
OUT 8
NC 3
NC 4
GND
TP60
5
CR C/DSW3
3
2
DSW2
2
1
TP125
2
10
TP8
IN
NC
NC
C
1
TP45
DM105
DM111
3
TP59
3
CR A/DSW1
4
Q32
3
2
4
DSR
# 2#RST
5RST
RST
U9
7
1
2
5
C42
4 A19/DSW8
3 A18/BTDET
2 A17/DSW12
1 A16/DSW11
C101
Q31
D26
TP2
RM6
5
6
7
8
+5V
TP43
4
R50
+5V
R49
DSR OR #25
+5V
4
#RST
TP1
+5V
1
4
+5V
DM106
4
TP39
C5
Appendix A-17
Confidential
TM-U200 Series (Type B) Service Manual
RS-232 Serial Interface Board
TO MAIN BOARD
CN2
+5V
C1
TP2
+12V
U1
16
C2
4
5
RD
DSR
13
8
SD
DTR
14
7
TO HOST
15
FG
SD/SD1
RD/SD2
RS/RD1
/RD2
DR/INIT1
SG
/DR1
/DR2
/CS1
/CS2
ER
INIT2
SHELL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
VCC
C2+
V+
C1+
C2-
C1-
R1I
R2I
R1O
R2O
T1O
T2O
T1I
T2I
GND
V-
2
RTS
DSR
DSR
C3
R21
1
DTR
DTR
+5V
+5V
3
12
9
RD
DSR
11
10
SD
DTR
+
1
2
V
6
+
5
V
+
5
V
SD
RD
SD
RD
C7
#25_RESET
DSR_RESET
SG
SG
SG
SG
1
2
3
4
5
6
7
8
9
SG
10
11
12
13
14
15
16
17
18
19
20
21
22
SG 23
24
25
26
27
28
29
30
SG
DK 1
DK S
PG
PG
+24V
+24V
PG
HOST RTS
CTS
I/F DET
RTS
CLKOUT/DTR
CLKREQ
SG
+5V
DK 2
DK G
DK P
PG
+24V
+24V
PG
SG
SD
RD
(RES)
#25_RESET
DSR_RESET
#RESET
SG
R1
RTS
RTS
Q1
RTS
10K
10K
R7
Q2
+12V
D1
D
S
R
|
R
E
S
E
T
R3
+12V
R4
8
3
1
R2
0
C5
TP1
R16
DSR
R
T
S
#
2
5
|
R
E
S
E
T
10K
10K
RTS
2
C6
R17
U2A
CN1
4
S
G
R20
+
5
V
R18
-12V
R5
D2
R8
-12V
-12V
D3
R13
+12V
R9
C4
R14
R15
R6
5
#25INIT
7
6
R12
U2B
R10
R11
-12V
SG
D4
Rev. B
R19
Appendix A-18
Confidential
TM-U200 Series (Type B) Service Manual
IEEE 1284 Parallel Interface Board
+5V
DD5V
D1
CEN7..0
U1
2
4
6
8
11
13
15
17
U11D
12
1
19
11
13
1A1
1A2
1A3
1A4
2A1
2A2
2A3
2A4
RM12
18
16
14
12
9
7
5
3
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
8 7 6 5
5 6 7 8
RM11
1 2 3 4
4 3 2 1
1G
2G
R2
RM2
U9
2
5
6
9
12
15
16
19
CEN0
CEN1
CEN2
CEN3
CEN4
CEN5
CEN6
CEN7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
3
4
7
8
13
14
17
18
D0
D1
D2
D3
D4
D5
D6
D7
+5V
OC
G
4
3
2
1
5
6
7
8
1
2
3
4
8
7
6
5
1
11
RM1
R48
C19
C15
C14
C26
C20
C23
C21
C24
C22
C25
CN1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
+5V
+5V
+5v
R13
R14
R49
R15
Q5
+5V
R45
R46
R39
R40
R42
DD5V
R43
R11
4
5
6
CN2
DK 1
DK S
PG
PG
+24V
+24V
PG
HOST_RTS
CTS
DET
RTS
CLKIN/DTR
CLKREQ
SG
+5V
DK 2
DK G
DK P
PG
+24V
+24V
PG
SG
SD
RD
(RES)
#25_RESET
DSR_RESET
#RESET
SG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
R16
U2
+5V
R7
C10
CEN0
CEN1
CEN2
CEN3
CEN4
CEN5
CEN6
CEN7
C3
C11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
C18
P31/RXD
P32/SCLK
P33/TXD
P35/RD
P36/WR
P37/TO1/WAIT
P80/INT0
P81/INT1/TI2
NMI
EA
CLK
P00/D0
P01/D1
P02/D2
P03/D3
P04/D4
P05/D5
P06/D6
P07/D7
VSS
VCC
P27/A15
P26/A14
P25/A13
P24/A12
P23/A11
P22/A10
P21/ A9
P20/ A8
P17/ A7
P16/ A6
P15/ A5
P14/ A4
P13/ A3
P12/ A2
P11/ A1
P10/ A0
RESET
X2
X1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
3
2
1
R50
1284ACT
CTS
AFXT
+5V
R51
CEN_DIR
BS_CLR
LOGIC-H
RTS
DK_STAT
ACK
S_BUSY
PE
SLCT
ERR
Q4
R36
4
5
6
C17
3
2
1
R30
C90M00NB
X1
0
-STB/HOSTCLK
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
-ACK/PTRCLK
BUSY/PTRBUSY/37
PE/ACKDATREQ/26
SLCT/XFLAG/15
-AFXT/HOSTBUSY
NC
GND
FG
LOGIC-H
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
-INIT
-ERR/-DTVAIL/04
GND
DK STATUS
+5V
-SELIN/1284ACT
SHELL
U10
2
4
6
8
11
13
15
17
U5A
1
7
2
H_BUSY
1
19
1A1
1A2
1A3
1A4
2A1
2A2
2A3
2A4
R27
R28
R29
R31
R32
18
16
14
12
9
7
5
3
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
1G
2G
DD5V
C27
+5V
Q
P
R
Q
C
L
D
CLK
3
C29
C30
C31
R54
U7
7
5
C28
R53
R52
2
1
+5V
U11C
9
R23
8
6
10
R24
U5B
R25
6
3
R10
5
R26
U11A
U11B
1
4
C16
6
+5V
3
2
5
R12
C5
DD5V
U1
CU1
Rev. B
DD5V
U9
DD5V
U10
CU9
DD5V
U11
CU10
+5V
C32
C33
+5V
U5
CU11
C4
U7
CU5
CU7
Appendix A-19
Confidential
TM-U200 Series (Type B) Service Manual
RS-485 Serial Interface Board
TP2
R12
R9
R13
CS1
8
1
CS2
7
2
CTS
DR2
6
3
DR
DR1
5
4
CS1
R10
CS2
R8
+5V
U2
+
5
V
+5V
CTS
RD1
RD2
R1
CN2
SG
R5
R2
TO MAIN BOARD
R17
CTS
SG
U1
R6
8
1
7
2
SD2
6
3
SD1
5
4
DR
R3
RD
SD
R16
DR
SG
SG
R18
+5V
+5V
TO HOST
SG
FG
SD/SD1
RD/SD2
RS/RD1
/RD2
DR/INIT1
SG
/DR1
/DR2
/CS1
/CS2
ER
INIT2
SHELL
Rev. B
C5
+
5
V
CN1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
FG
0
FG
R11
SD2
SD1
RD2
RD1
SG
DR2
DR1
CS2
CS1
SG
R4
TP1
SD
RD
SG
SD
RD
SG
SG
SG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
DK 1
DK S
PG
PG
+24V
+24V
PG
HOST_RTS
CTS
DET
RTS
CLKIN/DTR
CLKREQ
SG
+5V
DK 2
DK G
DK P
PG
+24V
+24V
PG
SG
SD
RD
(RES)
#25_RESET
DSR_RESET
#RESET
SG
R19
R14
R15
R7
Appendix A-20
Confidential
TM-U200 Series (Type B) Service Manual
Printer Mechanism Unit Overall Exploded Diagram
CPP-tite (M3 x 10)
Print head FPC
Print head unit
CCS-tite (M3 x 6)
Belt
Left cover fixing plate
J feed roller shaft holder (left)
CBS-tite (M3 x 5)
Right cover fixing plate
Ribbon drive plate
assembly
Tension plate assembly
Carriage sub assembly
Manual
cutter
RE (2.3)
Paper hold
spring
Carriage shaft
RE (2.3)
Belt tension spring
Ribbon
transmission gear
Ribbon frame earth plate
Carriage guide shaft
Ribbon release
lever
CCS-tite (M3 x 6)
CBT-B
(M3 x 10)
Adjustment roller
shaft holder
Paper feed motor
Ribbon intermediate
gear
Ribbon release
spring
Ribbon switch
lever
CBT-B (M3 x 10)
RE (3)
Paper feed reduction gear
Paper hold roller
Paper hold roller shaft
Adjustment roller
shaft holder
Paper hold
plate spring
Ribbon cassette
Thumb-screw
Paper feed frame assembly
Paper hold spring
Head cover
CPS-tite (S-P4)
(M3 x 8)
RE (2.5)
Ribbon take-up assembly
Base frame assembly
RE (2.3)
Carriage motor assembly
Ribbon frame spring
Paper feed roller assembly
Sensor assembly
Ribbon frame assembly
Ribbon frame fixing plate
Rev. B
Carriage motor heat sink plate
Upper paper guide
Appendix A-21
Confidential
TM-U200 Series (Type B) Service Manual
Case Unit Overall Exploded Diagram
This is the diagram that the changes described in Addendum 1, 2, and 3 are not taken.
CPS-tite (M3 x 6)
CBS-tite (M3 x 5)
Auto-cutter
lock lever
spring
Lower cutter plate
Hexagon lock screws (*)
Auto-cutter
assembly
Main cover assembly
Auto-cutter cover
Upper plate
RE (2.3)
RE (2.3)
Auto-cutter lock
lever
CP(0) (M3 x 6)
CPT-B (M3 x12)
RE (3)
Auto-cutter plate
assembly
Hinge assembly
CBS-tite (M3 x 4)
Auto-cutter plate shaft
Main circuit board assembly
Connector plate
CPS-tite (M3 x 6)
I/F circuit board
assembly
Auto-cutter
CPT-B (M3 x12)
plate spring
shaft
CPT-B (M3 x12)
Auto-cutter
fixing plate
CBS-tite
(M3 x 5)
CPT-B (M3 x12)
Guide roller
Auto-cutter
plate spring
Upper case
Paper roll receive rollers
CBB-tite (M2 x 8)
PROM
Near-end detector
Switch panel
Lower case
Spacer
Lead wire
assembly
CPT-B (M3 x12)
Near-end detector frame
CBS-tite (M3 x 5)
CP(O) (M3 x 6)
CPT-B (M3 x12)
CP (O)
(M3 x 6)
Rubber foot
Printer mechanism assembly
Lower plate
CPT-B (M3 x12)
Rubber foot
CPS-tite (M3 x 6)
ROM spacer
CPS-tite (M3 x 6)
Rev. B
ROM cover
Near-end detector lever
(*) For the parallel interface, the CPS-tite ( M3 x 6 )
are used.
Appendix A-22
Confidential
TM-U200 Series (Type B) Service Manual
Case Unit Overall Exploded Diagram
This is the diagram that the changes described in Addendum 1, 2, and 3 are taken.
Auto-cutter
lock lever
Lower cutter plate
spring
Hexagon lock screws (*)
CPS-tite (M3 x 6)
CPS-tite (M3 x 6)
CBS-tite (M3 x 5)
Release
lever
Auto-cutter
assembly
Main cover assembly
Auto-cutter cover
Upper plate
RE (2.3)
Auto-cutter lock
lever
CP(0) (M3 x 6)
CPT-B (M3 x12)
Auto-cutter plate
assembly
RE (3)
Hinge assembly
CBS-tite (M3 x 4)
Auto-cutter plate shaft
Main circuit board assembly
Auto-cutter
CPT-B (M3 x12)
plate spring
shaft
CPT-B (M3 x12)
Connector plate
CPS-tite (M3 x 6)
I/F circuit board
assembly
Auto-cutter
fixing plate
CBS-tite
(M3 x 5)
CPT-B (M3 x12)
Guide roller
Paper roll receive rollers
Auto-cutter
plate spring
Upper case
Lower case
CBB-tite (M2 x 8)
Near-end detector
Switch panel
Spacer
Lead wire
assembly
CP(O) (M3 x 6)
Near-end detector frame
CPT-B (M3 x12)
CBS-tite (M3 x 5)
CPT-B (M3 x12)
CP (O)
(M3 x 6)
Rubber foot
Lower plate
Printer mechanism assembly
CPT-B (M3 x12)
Rubber foot
CPS-tite (M3 x 6)
CPS-tite (M3 x 6)
Rev. B
Near-end detector lever
ROM cover
(*) For the parallel interface, the CPS-tite ( M3 x 6 )
are used.
Appendix A-23
Confidential
TM-U200 Series (Type B) Service Manual
Printer Mechanism Unit Lubrication Points Diagram
(1) O-10
(5) G-31
(6) G-31
(7) G-31
(2) G-31
(8) G-31
(7) G-31
Rev. B
Appendix A-24
Confidential
TM-U200 Series (Type B) Service Manual
Case Unit Lubrication Points Diagram
(3) G-31
(3) G-31
(4) G-31
(4) G-31
Rev. B
Appendix A-25
Confidential
TM-U200 Series (Type B) Service Manual
Addendum 1
Main Circuit Board Types and Maintenance
Changes
In ANK font model, the following three changes were made with regard to the main circuit
board.
❏ EP-ROM equipped main circuit board no longer used
❏ Number of switches in DIP switch set DSW2*1 changed from 4 to 8
❏ Function assignment of 8-switch DIP switch set DSW2*1 changed*2
*1 DIP switch set DSW1 is unchanged.
*2 Some products are not applicable with this modification depends on destination of shipment.
EP-ROM equipped main circuit board no longer used in ANK font model
The control program for the printer can be contained in two types of memory: EP-ROM or flash
memory. When EP-ROM is used, the EP-ROM chip is installed in a socket on the main circuit
board. When flash memory is used, the flash memory chip is soldered to the main circuit board.
Previously, the ANK font model used an EP-ROM on the main circuit board, whereas the
multilingual font model used flash memory on the main circuit board. For printers in current
production, the ANK font model also has been changed to flash memory.
However, spare parts for the ANK font model still are supplied with the EP-ROM type main
circuit board.
Number of switches in DIP switch set DSW2 changed in ANK font model
The printer has two sets of DIP switches: DSW1 and DSW2. The number of switches contained
in DSW2 has been changed from 4 to 8. (The multilingual font model has been using 8-switch
DIP switch for the DIP switch set DSW2 from start of mass production.)
The added switches control internal functions of the printer and are not available for user setting
purpose.
Rev. B
Main Circuit Board Types and Maintenance Addendum 1-1
Confidential
Function assignment of 8-switch DIP switch set DSW2 changed in ANK font model
The following changes were made in ANK font model*3. (There has been no change for
multilingual font model.)
*3 Some products are not applicable with this modification depends on destination of shipment even if it is ANK font
model.
Serial interface model
The "printer reset signal enabled/disabled" function was changed from DSW2-7 and DSW2-8 to
DSW2-3 and DSW2-4.
Parallel interface model
The "printer reset signal enabled/disabled" function was changed from DSW2-8 to DSW2-4.
Addendum 1-2 Main Circuit Board Types and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Servicing Precautions
During servicing and repair of the printer, observe the following points.
❏ Use the correct main circuit board
❏ Use the correct DIP switch setting table
❏ Use the correct circuit diagram
For details, please see the following sections.
Using the correct main circuit board
When replacing the main circuit board, select the correct board for the printer. Determine the
board according to the following sequence.
1. Check whether the printer is an ANK font model/Japanese font model/Chinese font
model/Taiwanese font model. If it is an ANK font model, proceed to next step. For the other
models, go to step 3.
2. Check the setting of DIP switch set DSW2 according to the information given in the section
"Using the correct DIP switch setting table" on the next page.
3. Select the correct main circuit board according to the following table.
Main circuit board types
Model
Main circuit board types
DIP switch set
DSW2 type
ANK font model
Main circuit board set, B (equipped with EP-ROM)
Type D
Main circuit board set, D (equipped with EP-ROM)
Main circuit board unit, AW (equipped with flash memory)
Type AD
Main circuit board unit BA (equipped with flash memory)
Type CD
Chinese font model
(Simplified Chinese)
Main circuit board unit AR (equipped with flash memory)
Japanese font model
Main circuit board unit BE (equipped with flash memory)
Taiwanese font model
(Traditional Chinese)
Main circuit board unit AQ (equipped with flash memory)
Type AD
In future, main circuit boards other than those listed above may also become available. Check
for the latest information as follows.
1. Check the model code (noted on manufacturing name plate).
2. Obtain the parts price list matching the model code.
Note:
There are two different parts price lists, one for the EP- ROM equipped model, and one for the flash
memory model. Choose the parts price list for the flash memory model.
Rev. B
Main Circuit Board Types and Maintenance Addendum 1-3
Confidential
3. Check the latest main circuit board type and the part code.
Using the correct DIP switch setting table
The DIP switch set DSW2 can have either 4 or 8 switches. For the 8-switch DSW2, there are two
types with different function assignments.
Before setting the DIP switch set DSW2, check which type is installed in the printer.
Identifying the DIP switch set DSW2 type
The following three types exist for the DIP switch set DSW2.
DIP switch set DSW2 type
Type D
Type AD
Type CD
Identify the type as follows.
1. Remove the lower plate.
2. Check the area shown below to see if there is a printing that begins with “SET.”
3.
If there is no such printing, the DSW2 is type D.
4. If there is a printing that begins with “SET,” use the following table to identify the type.
Printing
DIP switch set DSW2 type
SET, AD
Type AD
SET, CD
Type CD
Addendum 1-4 Main Circuit Board Types and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
DIP switch setting tables
This section contains setting tables for the various DIP switch types. Settings for DIP switch set
DSW1 are also shown, but there have been no changes for this DIP switch set.
DIP switch setting tables (type D)
Serial interface model
DSW1
DIP switch
Function
ON
OFF
1
Data receive error
Ignored
Prints "?"
2
Receive buffer capacity
40 bytes
ANK model: 1000 bytes
Multilingual model: 512
bytes
3
Handshaking
XON/XOFF
DTR/DSR
4
Data word length
7 bits
8 bits
5
Parity check
Yes
No
6
Parity selection
Even
Odd
7
Baud rate selection
4800 bps
9600 bps
8
Busy condition
Receive buffer full
・Off-line
・Receive buffer full
bps: bits per second
DSW2
Rev. B
DIP switch
Function
ON
OFF
1
Print column selection
42 CPL/35 CPL
40 CPL/33 CPL
2
Internal use (no change allowed)
Fixed to ON
---
3
I/F pin 6 reset signal
Enabled
Disabled
4
I/F pin 25 reset signal
Enabled
Disabled
Main Circuit Board Types and Maintenance Addendum 1-5
Confidential
Parallel interface model
DSW1
DIP switch
Function
ON
OFF
1
Auto line feed
Enabled
Disabled
2
Receive buffer capacity
40 bytes
ANK model: 1000 bytes
Multilingual model: 512
bytes
3
Undefined
---
---
4
Undefined
---
---
5
Undefined
---
---
6
Undefined
---
---
7
Undefined
---
---
8
Busy condition
・Receive buffer full
・Off-line
・Receive buffer full
DIP switch
Function
ON
OFF
1
Print column selection
42 CPL/35 CPL
40 CPL/33 CPL
2
Internal use (no change allowed)
Fixed to ON
---
3
Undefined
---
---
4
I/F pin 31 reset signal
Enabled
Disabled
DSW2
Addendum 1-6 Main Circuit Board Types and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
DIP switch setting tables (type AD)
Serial interface model
DSW1
DIP switch
Function
ON
OFF
1
Data receive error
Ignored
Prints "?"
2
Receive buffer capacity
40 bytes
ANK model: 1000 bytes
Multilingual model: 512
bytes
3
Handshaking
XON/XOFF
DTR/DSR
4
Data word length
7 bits
8 bits
5
Parity check
Yes
No
6
Parity selection
Even
Odd
7
Baud rate selection
4800 bps
9600 bps
8
Busy condition
Receive buffer full
・Off-line
・Receive buffer full
bps: bits per second
DSW2
Rev. B
DIP switch
Function
ON
OFF
1
Print column selection
42 CPL/35 CPL
40 CPL/33 CPL
2
Internal use (no change allowed)
Fixed to ON
---
3
Internal use (no change allowed)
---
Fixed to OFF
4
Undefined
---
---
5
Internal use (no change allowed)
---
Fixed to OFF
6
Internal use (no change allowed)
---
Fixed to OFF
7
I/F pin 6 reset signal
Enabled
Disabled
8
I/F pin 25 reset signal
Enabled
Disabled
Main Circuit Board Types and Maintenance Addendum 1-7
Confidential
Parallel interface model
DSW1
DIP switch
Function
ON
OFF
1
Auto line feed
Enabled
Disabled
2
Receive buffer capacity
40 bytes
ANK model: 1000 bytes
Multilingual model: 512
bytes
3
Undefined
---
---
4
Undefined
---
---
5
Undefined
---
---
6
Undefined
---
---
7
Undefined
---
---
8
Busy condition
・Receive buffer full
・Off-line
・Receive buffer full
DIP switch
Function
ON
OFF
1
Print column selection
42 CPL/35 CPL
40 CPL/33 CPL
2
Internal use (no change allowed)
Fixed to ON
---
3
Internal use (no change allowed)
---
Fixed to OFF
4
Undefined
---
---
5
Internal use (no change allowed)
---
Fixed to OFF
6
Internal use (no change allowed)
---
Fixed to OFF
7
Undefined
---
---
8
I/F pin 31 reset signal
Enabled
Disabled
DSW2
Addendum 1-8 Main Circuit Board Types and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
DIP switch setting tables (type CD)
Serial interface model
DSW1
DIP switch
Function
ON
OFF
1
Data receive error
Ignored
Prints "?"
2
Receive buffer capacity
40 bytes
ANK model: 1000 bytes
Multilingual model: 512
bytes
3
Handshaking
XON/XOFF
DTR/DSR
4
Data word length
7 bits
8 bits
5
Parity check
Yes
No
6
Parity selection
Even
Odd
7
Baud rate selection
4800 bps
9600 bps
8
Busy condition
Receive buffer full
・Off-line
・Receive buffer full
bps: bits per second
DSW2
Rev. B
DIP switch
Function
ON
OFF
1
Print column selection
42 CPL/35 CPL
40 CPL/33 CPL
2
Internal use (no change allowed)
Fixed to ON
---
3
I/F pin 6 reset signal
Enabled
Disabled
4
I/F pin 25 reset signal
Enabled
Disabled
5
Internal use (no change allowed)
---
Fixed to OFF
6
Internal use (no change allowed)
---
Fixed to OFF
7
Internal use (no change allowed)
---
Fixed to OFF
8
Undefined
---
---
Main Circuit Board Types and Maintenance Addendum 1-9
Confidential
Parallel interface model
DSW1
DIP switch
Function
ON
OFF
1
Auto line feed
Enabled
Disabled
2
Receive buffer capacity
40 bytes
ANK model: 1000 bytes
Multilingual model: 512
bytes
3
Undefined
---
---
4
Undefined
---
---
5
Undefined
---
---
6
Undefined
---
---
7
Undefined
---
---
8
Busy condition
・Receive buffer full
・Off-line
・Receive buffer full
DIP switch
Function
ON
OFF
1
Print column selection
42 CPL/35 CPL
40 CPL/33 CPL
2
Internal use (no change allowed)
Fixed to ON
---
3
Undefined
---
---
4
I/F pin 31 reset signal
Enabled
Disabled
5
Internal use (no change allowed)
---
Fixed to OFF
6
Internal use (no change allowed)
---
Fixed to OFF
7
Internal use (no change allowed)
---
Fixed to OFF
8
Undefined
---
---
DSW2
Addendum 1-10 Main Circuit Board Types and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Using the correct circuit diagram
Depending on the type of DIP switch set DSW2, there are the following three types of circuit
diagrams.
Circuit diagram type (DIP switch set DSW2 type)
Type D
Type AD
Type CD
Determine the correct circuit diagram according to the same procedure as described in the
section "Using the correct DIP switch setting table".
The circuit diagrams are given on pages A-13, A-14, and A- 15.
Rev. B
Main Circuit Board Types and Maintenance Addendum 1-11
Confidential
Addendum 1-12 Main Circuit Board Types and Maintenance
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Addendum 2
Lower Plate Change and ROM Spacer Abolition
Because the storage device for the printer control program was changed from EP-ROM to flash
memory, the ROM spacer is no longer required and was abolished. Due to this change, the
shape of the lower plate also has changed.
Note:
For details on the main circuit board change, please refer to Addendum 1 of this manual.
Description of Change
The following change was made.
Main circuit board
Shape
EP-ROM type
Lower plate
ROM spacer
ROM cover
Flash memory type
Lower plate
ROM cover
Rev. B
Lower Plate Change and ROM Spacer Abolition Addendum 2-1
Confidential
Servicing Precautions
The ROM spacer serves fasten the EP-ROM to the socket. When servicing an EP-ROM
equipped main circuit board, be sure to observe the following points.
❏ Use a lower plate with the old shape.
❏ Attach the ROM spacer to the ROM cover.
Addendum 2-2 Lower Plate Change and ROM Spacer Abolition
Rev. B
Confidential
TM-U200 Series (Type B) Service Manual
Addendum 3
Auto-Cutter Release Tab Change
To improve the open/close action of the auto-cutter, the auto-cutter release tab was changed.
Consequently, the assembly procedure is now different, and there has been a change in the
spare parts supply unit.
Description of Change
The following change was made.
Description
Before change
R.E (2.3)
Auto-cutter lock
lever spring
R.E (2.3)
Auto-cutter lock lever
After change
R.E (2.3)
Auto-cutter lock
lever spring
Release lever (added)
R.E (2.3) (abolished)
Auto-cutter lock lever
Rev. B
Auto-Cutter Release Tab Change Addendum 3-1
Confidential
Assembly Procedure Change
Please refer to pages 5-37 and 5-38 of this manual.
Spare Parts Supply Unit Change
The following change was made to the spare parts supply unit.
Description
Before change
Auto-cutter lock lever
After change
Auto-cutter lock lever assembly
Release lever (added)
Auto-cutter lock lever
Addendum 3-2 Auto-Cutter Release Tab Change
Rev. B