Contents
Product Description
Specifications
................................................................................................. 8
Features ................................................................................................................ 8
Accessories ........................................................................................................... 8
Printing Specifications ........................................................................................... 9
Paper Handling ...................................................................................................... 9
Paper Specifications ............................................................................................ 11
Electrical Specifications ....................................................................................... 15
Reliability ............................................................................................................. 15
Safety Approvals ................................................................................................. 15
CE Marking .......................................................................................................... 15
Firmware Specifications
............................................................................... 16
Control Codes and Fonts .................................................................................... 16
Interface Specifications ....................................................................................... 18
Parallel Interface (Forward Channel) .................................................. 18
Parallel Interface (Reverse Channel) ................................................. 18
Operation Instruction
.................................................................................... 19
Control Panel ....................................................................................................... 19
Bi-directional Adjustment Function ...................................................................... 19
EEPROM Initialization ......................................................................................... 20
Main Components
......................................................................................... 21
C272MAIN Board ................................................................................................ 22
Printer Mechanism .............................................................................................. 23
Operating Principles
Control Circuit
.............................................................................................. 25
Overview of the Control Circuit Operation ........................................................... 25
System Reset Circuit ........................................................................................... 26
Printhead Driver Circuit ....................................................................................... 27
CR Motor Driver Circuit ....................................................................................... 28
PF Motor Driver Circuit ........................................................................................ 28
EEPROM Control Circuit ..................................................................................... 29
Sensor Circuit ...................................................................................................... 29
Disassembly and Assembly
Adjustment
Overview
...................................................................................................... 33
Pre-operation for the Adjustment Program ......................................................... 33
Bi-D Adjustment .................................................................................................. 35
TPE Level Reset ................................................................................................. 36
Writing the User-characteristic Data ................................................................... 37
Troubleshooting
Overview
...................................................................................................... 40
Troubleshooting Information
........................................................................ 40
Printhead ............................................................................................................. 40
Sensors ............................................................................................................... 40
Motors ................................................................................................................. 40
Error Codes with Indicators and Buzzer .............................................................. 40
Unit Level Troubleshooting
........................................................................... 41
Repairing the C165 PSB/PSE Board
.............................................................. 41
Repairing the C272MAIN Board
..................................................................... 41
Repairing the Printer Mechanism
.................................................................. 43
Maintenance
Appendix
EEPROM Address Map
................................................................................. 47
Connector Summary
..................................................................................... 51
Component Layout
....................................................................................... 53
Circuit Diagram
............................................................................................ 55
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