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 Disassembly, Assembly, and Adjustment 5-37
TM-U200 Series (Type B) Service Manual
Confidential
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.
The procedure in step 2 below differs depends on if you attach the release lever to the auto-
cutter 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).
Auto-cutter assembly
Auto-cutter plate assembly
(0.59 to 0.78 N • m (6 to 8 kgf • cm)]
CBS-tite (M3x4)
Dowel
Dowel
RE (2.3)
Auto-cutter lock lever
Auto-cutter lock
lever spring
Release lever
Slit
Tab
Auto-cutter plate
assembly