Contents
Main
NOTICE
Copyright 1997 by SEIKO EPSON CORPORATION Nagano, Japan
PRECAUTIONS
WARNING
CAUTION
WARNING
CAUTION
PREFACE
Page
Page
Chapter 1 Product Descriptions
1.1 Specifications
1.1.1 Features
Page
1.2 Hardware Specifications
1.2.1 Printing Method
1.2.2 Printing Specifications
Rev. A 1-
1.2.3 Paper Handling Specifications
1.2.4 Paper Specification
Rev. A 1-
Note1)
Note3):
Note2):
Note2):
Page
Page
1.2.5 Printable Area
Rev. A 1-11
Note *1)
Printable Area
Printable Area
BM
1.2.6 Ribbon Cartridge
1.2.7 Input data buffer
Note*)
1.2.8 Electrical Specification
1.2.9 Reliability
1.2.10 Environmental Condition
1.2.11 Safety Approvals
1.2.12 CE Marking
1.2.13 Acoustic Noise
1.3 Firmware Specification
1.3.1 Control Codes and Fonts
Page
1.3.2 Interface Specification
1.3.2.1 Parallel interface (Forward channel)
Page
1.3.2.2 Parallel Interface (Reverse channel)
Note*):
Rev. A 1-21
1.3.2.3 Optional Interface
1.3.2.4 Interface Selection
1.3.3 Prevention Hosts from Data Transfer Timeout
1.4 Operation
1.4.1 Control Panel
1.4.1.1 Usual Operation
Page
1.4.1.2 Switches
1.4.1.3 Indicators(LED)
1.4.1.4 Buzzer
1.4.2 Default Setting
Notes.
1.4.3 Bi-d Adjustment
1.4.4 Initialization
1.4.5 Errors
1-3
1.5 Main Components
1.5.1 C214 Main Board
1.5.2 C214PSB Board
Page
Chapter 2 Operating Principles
Rev. A 2-1
2.1 Printer Mechanism Operation
2.1.1 Printing Mechanism
Page
2.1.2 Carriage Mechanism
Page
2.1.3 Ribbon Advance Mechanism
2-
2.1.4 Paper Advance Mechanism
2.1.4.1 Paper Advance Mechanism
2.1.4.2 Paper Advance Detector Mechanism
Page
2.1.4.3 Release Lever Mechanism
Release Lever
Tractor Gear
Roller, PF Drive
Tractor Transmission Gear
2.1.5 Platen Gap Adjustment
Rev. A 2-11
2.2 Power Supply Operation
2.2.1 Power Supply Circuit
2.2.1.1 Power Supply Overview
2.2.1.2 Power Supply Circuit Operation
Rev. A 2-1
2.2.2 Control Circuit
2.2.2.1 Operating Principles of the Control Circuit
2.2.2.2 EEPROM Control Circuit
2.2.2.3 System Reset Circuit
2.2.2.4 Power Off Detector Circuit
2.2.2.5 Print Head Driver Circuit
2.2.2.6 CR Motor Driver Circuit
2.2.2.7 PF Motor Driver Circuit
2.2.2.8 Operation Panel Control Circuit
Page
Chapter 3 Disassembly and Assembly
Page
3.1 Overview
3.1.1 Precautions for Disassembling the Printer
3.1.2 Tools
WARNING
3-2
3.1.3 Service Check After Repair
3.1.4 Specifications for Screws
3-4
3.2 Printer Disassembly and Assembly
Figure 3-1. Disassembly Flowchart
The flowchart below show you the basic order for disassembly.
Before disassembling any part of the printer, note the warnings in Section 3.1.1.
START
3.2.1 HOUSING, UPPER Removal
3-6
3.2.2 Printer Mechanism Removal
3.2.3 C214 MAIN Board Removal
3.2.4 C214 PSB/PSE Board Removal
3.2.5 EP-ROM Replacement
CHECK POINT
3.2.6 Printhead Removal
3.2.7 Ribbon Mask Removal
3.2.8 PAPER EXIT ASSY. Removal
3.2.9 Ribbon Mask Holder Removal
3.2.10 PW Detector (Top) Removal
3.2.11 MOTOR, CR Removal
3.2.12 Carriage Assy. Removal
CHECK POINT
Page
3.2.12.1 RATCHET, RD Removal
3.2.13 PAPER GUIDE Removal
Page
Chapter 3 Disassembly and Assembly
Rev. A 3-21
3-22
3.2.14 Platen Removal
3.2.15 MOTOR, PF Removal
Page
3.2.19 DETECTOR, PE, FRONT Removal
3.2.20 DETECTOR, PE, REAR Removal
3.2.21 LEVER, RELEASE Removal
3.2.22 Tractor ASSY. Removal
Page
Rev. A 4-1
4.1 Adjustment Overview
Note*2)
Note*1)
4.1.1 Required Adjustments
4.1.2 Required Adjustment Tools
4.2 Adjusting and Resetting the Printer
Do not rotate the platen roller during this adjustment.
4.2.1 Platen Gap Adjustment
Rev. A 4-
4.2.2 Factory Setting
Page
Rev. A 4-
4.2.3 Bi-d Adjustment
Page
Page
5.1 Overview
5-
5.2 Unit Level Troubleshooting
Page
Page
Page
Page
Rev. A 5-
Page
View A
R F
R
L
1-24 :Wire Number C :Common Terminal T:Thermistor Terminal
Note*)
Rev. A 5-11
5.3 Repairing the Power Supply Circuit Board
Page
Page
5.4 Repairing the Main Board
Page
Page
5.5 Repairing the Printer Mechanism
Page
Page
6.1 Preventive Maintenance
Page
Appendix
A.1 Connector Summary
A-
Rev. A A-
A-
Page
Page
Page
Page
Page
Page
Page
Page
Page
A-1
Page
A.5 Dimension and Weight
EPSON OVERSEAS MARKETING LOCATIONS
As of September, 1996
