Chapter 4. Troubleshooting; Common Causes Of Malfunctions; Testing; Fault Isolation - Printronix P6000 Series Maintenance Manual

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NOTE: The procedures in this chapter were developed from data collected on
an earlier model printer. They should, therefore, only be used as a general
guide for troubleshooting.
4-1. General
This chapter provides procedures to fault isolate to field replaceable units. A working knowledge
of the P6000 Series Operator's Guide and the User's Reference Manual is required to perform
fault isolation procedures contained in this chapter.

4-2. Common Causes of Malfunctions

Improper printer operation may be caused by electronic failures, mechanical failures, or interface
problems. Many problems can be corrected by replacing one of the PCBAs. Other problems asso
ciated with poor print quality can be cleared up by adjusting hammer alignment, platen gap, shuttle
turnaround time, or belt tension. The remaining problems can be attributed to particular assem
blies of the printing mechanism, or occasionally, to cables or interconnecting PCBAs.

4-3. Testing

a. Self Test
The printer continuously monitors some of its own functions. When a problem develops, fault in
dications appear on the digital display. For further information, refer to the User's Reference
Manual.
b. Performance Tests
Performance tests can be used to evaluate printer operation. These tests, which are also discussed
in the User's Reference Manual, are presented in paragraph 4-5 at the end of this chapter.

4-4. Fault Isolation

Failures are divided into catagories as listed in the Malfunction Symptom Index, Table 4-1. To
fault isolate, locate your symptom in the table. The table will direct you to a flow chart which will
guide you through the correct troubleshooting procedure. Note that these flow charts do not take
multiple failures into consideration.
P6040/P6080 Troubleshooting
CHAPTER 4
TROUBLESHOOTING
4-1