Troubleshooting
Rev. A
5-
5.2 Unit Level Troubleshooting
This section provides flowcharts which enable you to isolate the defective unit. Once the defective unit is
identified by following the corresponding chart, proceed to Section 5.3 to identify more specific part to be
replaced at the component level.
Table 5-4. Symptom and Problem
Symptom Problem Flowchart No.
The printer does not operate at all.
No LED indicator lights up.
The printer mechanism does not operate at all.
1
An error is indicated.
An error is indicated by LED indicators. 2
Printing operation is abnormal.
The printer does not print.
Abnormal printing occurs.
Print quality is poor.
3
Paper is fed abnormally.
The printer feeds paper abnormally.
Paper is jamming.
The top edge of the loaded paper is improperly
positioned.
4
Control panel operates abnormally.
Button operation has no affect on the printer. 5
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