Specifications

EPL-5700 Chapter3 Troubleshooting
Rev. A
3-11
3.4.2 Troubleshooting for Abnormal Operations
3.4.2.1 Abnormal Laser
Table 3-13. Remedy for Abnormal Laser 1
Check Item Remedy
1.Laser diode is abnormal. ---
• Exchange the print head unit.
• Exchange main control board.
3.4.2.2 Abnormal Polygon Motor
Table 3-14. Remedy for Abnormal Laser 2
Check Item Remedy
1.Polygon motor is abnormal. ---
• Exchange the print head unit.
• Exchange main control board.
3.4.2.3 Abnormal Fusing
Table 3-15. Remedy for Abnormal Laser 3
Check Item Remedy
1.Is the heater light turned on
when the power is turned on?
Yes
• Exchange thermister or fusing
unit.
• Exchange the main control
board.
• Exchange the power unit.
2.Is there continuity between
Pin1 and Pin3 of the
Connector CN2 on the fusing
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 Remedy
1.Is the power switch On? No Turn the power switch On.
2.Is the power code
connected to the printer
body?
No Connect the power code well.
3.Is the power code
connected to the plug?
No Connect the power code to
the plug.
4.Is the interlock switch On? No Adjust the position of the
interlock switch.
5.Does the interlock switch
operate normally?
No Exchange the interlock switch.
6.Is the fuse F1 in the power
unit disconnected?
No
• Exchange the power unit.
• Exchange the main control
unit.
Yes Exchange the fuse F1.