Unit Level Troubleshooting - Epson Stylus Photo 750 Service Manual

EPSON Stylus Photo 750

3.2 Unit Level Troubleshooting

This section contains the flow charts which are used to isolate the faulty
unit by following the flow chart according to the problem caused during
replacing or repairing the unit. You are to identify the faulty unit based
on the primary symptom listed in the Table3-4. After this, refer to 3.4
Unit Repair and find and replace the defective parts.
Table 3-4. Symptoms and Corresponding Flow Chart
Symptom
• No LED goes ON.
Printer does not
• Printer mechanism does not
operate.
operate at all.
• LED indicates error.
Error is detected.
• Printing is not performed.
Abnormal printing
• Bad printing quality.
operation.
• Abnormal printing.
• Abnormal paper feeding.
Paper Feeding is not • Paper jam occurs.
performed correctly.
• Page heading position is not
right.
Abnormal Control No responds from the printer,
Panel even after pressing switches.
Troubleshooting
Cause Flow Chart
1
2
3
4
5
Unit Level Troubleshooting
1. Printer does not operate.
Figure 3-2. Flowchart 1
Revision A
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