Troubleshooting For Abnormal Operations; Abnormal Laser; Abnormal Polygon Motor; Abnormal Fusing - Epson EPL-5700 Service Manual

EPL-5700

3.4.2 Troubleshooting for Abnormal Operations

3.4.2.1 Abnormal Laser

Table 3-13. Remedy for Abnormal Laser 1
Check Item
1.Laser diode is abnormal.

3.4.2.2 Abnormal Polygon Motor

Table 3-14. Remedy for Abnormal Laser 2
Check Item
1.Polygon motor is abnormal.

3.4.2.3 Abnormal Fusing

Table 3-15. Remedy for Abnormal Laser 3
Check Item
1.Is the heater light turned on
when the power is turned on?
2.Is there continuity between
Pin1 and Pin3 of the
Connector CN2 on the fusing
unit.
Rev. A
Remedy
---
Exchange the print head unit.
Exchange main control board.
Remedy
---
Exchange the print head unit.
Exchange main control board.
Remedy
Yes
Exchange thermister or fusing
unit.
Exchange the main control
board.
Exchange the power unit.
No
Exchange the fusing unit.
Exchange he heater light.
Exchange the thermostat.
Yes
Exchange the main control
board.
Exchange the power unit.

3.4.2.4 Power can not be turned on

Table 3-16. Remedy for Abnormal Laser 4
Check Item
1.Is the power switch On?
2.Is the power code
connected to the printer
body?
3.Is the power code
connected to the plug?
4.Is the interlock switch On?
5.Does the interlock switch
operate normally?
6.Is the fuse F1 in the power
unit disconnected?
Chapter3 Troubleshooting
Remedy
No Turn the power switch On.
No Connect the power code well.
No Connect the power code to
the plug.
No Adjust the position of the
interlock switch.
No Exchange the interlock switch.
No
Exchange the power unit.
Exchange the main control
unit.
Yes Exchange the fuse F1.
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