Service manual

EPSON EPL-5800 Revision B
Troubleshooting Troubleshooting 62
3.1.2.1 Check Point
The table below lists the check-point for identifying the possible cause and a remedy for
each error detected by the printer.
ABNORMAL LASER
ABNORMAL POLYGON MOTOR
ABNORMAL MAIN MOTOR
ABNORMAL FAN MOTOR
ABNORMAL FUSING
POWER CANNOT BE TURNED ON
Table 3-4. Troubleshooting for Abnormal Laser
Cause Remedy
Abnormal laser diode Replace the print head unit.
Replace the main control board.
Table 3-5. Troubleshooting for Abnormal Polygon Motor
Cause Remedy
Abnormal Polygon Motor Replace the print head unit.
Replace the main control board.
Table 3-6. Troubleshooting for Abnormal Main Motor
Check Item Remedy
Main Motor (M1) does not
rotate.
Replace the main motor (M1).
Replace the main control board.
Table 3-7. Troubleshooting for Abnormal Fan Motor
Check Item Remedy
Cooling Fan Motor (M2) does
not rotate.
Replace the cooling fan motor (M2).
Replace the main control board.
Table 3-8. Troubleshooting for the Abnormal Fusing
Check Item Remedy
Is the fusing unit warmed-up?
→
Yes
Replace the thermistor (TH1) or the
fusing unit.
Replace the main control board.
Replace the power unit (PU1).
↓
No
Is there continuity between Pin 1 and Pin 3
of the connector of the fusing unit?
→
No
Replace the fusing unit.
Replace the heater lamp (H1) or the
thermostat (TS1).
→
Yes
Replace the power unit (PU1) or the
main control board.
Table 3-9. Power Cannot be Turned ON
Check Item Remedy
Is the power code plugged in?
→
No
Connect the power code to the plug.
↓
Yes
Is the power code connected to the printer
body?
→
No
Connect the power code to the printer.
↓
Yes
Is the power switch (S1) ON?
→
No
Turn the power switch ON.
↓
Yes
Is the interlock switch (S2) ON?
→
No
Adjust the position of the interlock
switch (S2).
↓
Yes
Is the fuse (F1 or F2) in the power unit PU1)
disconnected?
→
No
Replace the PU1 or the main control
board.
→
Yes
Replace the fuse (F1 or F2).