Epson Stylus Color 1520 Service Manual page 120

5.2 Unit Level Troubleshooting
This section provides flowcharts that enable you to isolate the defective unit. Once you follow the
corresponding chart and identify the defective unit, refer to Section 5.3 and 5.4 to identify the specific
component to be replaced.
Table 5-4. Symptom and Problem
Symptom
The printer does not operate at all.
An error is indicated.
Printing is abnormal.
The printer feeds paper
abnormally.
The control panel does not
operate.
Problem
T
No LEDs light up.
T
The printer does not operate at all.
T
An error is indicated by the LEDs.
T
The printer does not print.
T
Printing results are abnormal.
T
Print quality is poor.
T
Paper feeding is abnormal.
T
Paper is jamming.
T
The top edge of the paper is positioned
improperly.
T
Buttons have no affect on the printer.
Troubleshooting
Flowchart No.
1
2
3
4
5
5-3