IBM 6400

Table of Contents
Printing Mechanism ...............................................................................38
Shuttle Frame Assembly .................................................................39
Paper Transport System .................................................................41
Ribbon Transport System ...............................................................42
Logical Control Of The Printer ...............................................................43
Printer Electronics...........................................................................43
Operator Panel ......................................................................................44
CMX Controller Board............................................................................45
Data Controller................................................................................47
Engine Controller ............................................................................49
Printer Interface .....................................................................................51
10Base2 And 10Base-T LEDs And DIP Switches ..........................52
10/100Base-T LEDs And DIP Switches ..........................................54
Power Supply Board..............................................................................57
AC Power ........................................................................................57
DC Power........................................................................................57
Graphics ................................................................................................58
5 Troubleshooting................................................... 59
Introduction............................................................................................59
Troubleshooting Aids.............................................................................59
Start Of Call ...........................................................................................60
Troubleshooting Display Messages.......................................................61
Message List...................................................................................62
Troubleshooting Other Symptoms.......................................................109
General Symptom List...................................................................110
Communications Failures ....................................................................131
Operator Print Tests ............................................................................132
Selecting And Running Tests........................................................133
Customer Engineer (CE) Tests............................................................134
Boot Diagnostics Menu .................................................................137
Hex Code Printout ...............................................................................140
ASCII Character Set ............................................................................142
Printer Information Menu .....................................................................143
Soft vs. Hard Reset..............................................................................145
Soft Reset .....................................................................................145
Hard Reset (“Cycle Power”) ..........................................................145
The Power On Sequence ....................................................................146
CMX Controller Board Handshake Sequences.............................146
DC Software Initialization And Power Up......................................150