IBM 6400

59
5 Troubleshooting
Introduction
This chapter lists fault messages and symptoms, and provides procedures for
troubleshooting printer malfunctions.
Always have the
Operator’s Guide and the Setup Guide handy when you
troubleshoot because this manual does not cover printer operation or
configuration. You must operate the printer to check its performance, and
sometimes you may have to reconfigure it.
Troubleshooting Aids
Troubleshooting is faster and more effective if you understand the equipment
and make use of all available tools.
This manual provides a number of troubleshooting aids to help you isolate
printer malfunctions:
• Start of Call................................................................................. page 60
• Troubleshooting Display Messages............................................ page 61
• Message List............................................................................... page 62
• Troubleshooting Other Symptoms............................................ page 109
• General Symptom List .............................................................. page 110
• Communications Failures ......................................................... page 131
• Operator Print Tests ................................................................. page 132
• Customer Engineer (CE) Tests................................................. page 134
• Hex Code Printout .................................................................... page 140
• ASCII Character Set ................................................................. page 142
• The Power On Sequence ......................................................... page 146
• Appendix A: Wire Data ............................................................. page 287