Unit Level Troubleshooting - Epson Stylus Pro Service Manual

Stylus Pro Service Manual

5.2 UNIT LEVEL TROUBLESHOOTING

When a problem occurs, you can identify the defective unit by the symptoms exhibited. The table below lists
the symptoms of certain problems. Once the problem is identified, refer to the flowchart that corresponds to
the problem.
Symptom
Printer does not operate at
power on
Error is detected
Failure occurs during printing
Printer does not feed the
paper correctly
Control panel operation is
abnormal
Rev.A
Table 5-5. Symptom and Problem
LEDs do not light up.
Printer mechanism does not operate.
Error is indicated by LED indication.
Printing is not performed.
Abnormal printing (missing dots, etc.)
Print quality is poor
No paper is fed.
Paper feed is irregular.
Paper jam occurs.
No response to button access.
Problem
Troubleshooting
Flowchart No.
1
2
3
4
5
5-3