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

1-6 Features and General Specifications Rev. B
Confidential
External Dimensions and Weight
Environmental Specifications
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
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
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
Operating Temperature Range
40° C (104° F), 65%
34° C (93° F), 90%
50° C (122° F), 35%
80
60
40
20
0
0
10 20 30
40
Environmental Temperature
Relative Humidity [% RH]
50
90
10