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

1-4 Features and General Specifications Rev. B
Confidential
Paper
(*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
"
]).
Paper types:
Paper roll: Plain paper or pressure-sensitive paper
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: 1 sheet: 0.06 to 0.085 mm (.0024 to .0034")
Weight: 52.3 to 64 g/m
2
(13.9 to 17 lb)
(45 to 55 kg/1000 sheets/1091 x 788)
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/m
2
(12.6 lb)
Bottom sheet: N60
paper thickness: 0.08 mm (.0031")
weight: 68.0 g/m
2
(18.1 lb)
Figure 1-4 Printing area
Maximum of 200 dots, 400 positions
76 mm (2.99")
20.2 mm (0.79") (*1)
Cutting position (manual cutter)
[6.76 mm (0.27")]
(*2)
63.34 mm (2.49")
[5.9 mm (0.23")]
Cutting position (auto-cutter)
27 mm (1.063")