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