Service manual
Table Of Contents
- Revision Table
- Introduction
- Chapter 1
- Features and General Specifications
- Chapter 2
- Mechanism Configuration and Operating Principles
- Printer Mechanism Operating Principles
- Print mechanism unit
- Print head unit movement
- Wire movement when a single dot is printed
- Printing a character (9x9 font)
- Paper Feed Mechanism Unit
- Paper loading (semi-automatic loading)
- 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
- Electrical Circuitry Operating Principles
- Principles of Operation
- Printer Mechanism Driver Circuits
- Printer Mechanism Operating Principles
- Chapter 3
- Handling and Maintenance
- Chapter 4
- Troubleshooting
- Chapter 5
- Disassembly, Assembly, and Adjustment
- Small Part Specifications
- Disassembly
- Sub-assembly A
- Main Assembly 1
- Main Assembly 2
- Main Assembly 3
- Main Assembly 4
- Main Assembly 5
- Main Assembly 6
- Main Assembly 7
- Main Assembly 8
- Main Assembly 9
- Main Assembly 10
- Main Assembly 11
- Main Assembly 12
- Main Assembly 13
- Main assembly 14
- Main Assembly 15
- Main Assembly 16
- Main Assembly 17
- Main Assembly 1 (Case Unit)
- Main Assembly 2 (Case Unit)
- Main Assembly 3 (Case Unit)
- Main Assembly 4 (Case Unit)
- Main Assembly 5 (Case Unit)
- Main Assembly 6 (Case Unit)
- Main Assembly 7 (Case Unit)
- Main Assembly 8 (Case Unit)
- Main Assembly 9 (Case Unit)
- Main Assembly 10 (Case Unit)
- Main Assembly 11 (Case Unit)
- Main Assembly 12 (Case Unit)
- Adjustment
- Appendix
- Appendix
- Addendum 1
- Main Circuit Board Types and Maintenance
- Addendum 2
- Lower Plate Change and ROM Spacer Abolition
- Addendum 3
- Auto-Cutter Release Tab Change
Rev. B Main Circuit Board Types and Maintenance Addendum 1-1
TM-U200 Series (Type B) Service Manual
Confidential
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.