Service Call
M0C3/M0C4/M0C5/M0C6/M0C7 6-4 SM
No. Type Error Name/Error Condition/Major Cause/Solution
SC220 D Beam synchronization error
The laser synchronization detection signal for the LD is not output within 0.4 sec.
after the laser unit has turned on.
• Disconnected cable from the laser synchronization detector defective
connection
• Defective laser synchronization detector/ main board
• The beam does not enter the laser synchronization detector
1. Turn the power OFF and ON.
2. Replace the polygon mirror motor/ laser unit.
3. Replace the interface harness of the laser unit.
4. Replace the main board.
No. Type Error Name/Error Condition/Major Cause/Solution
SC268 D Laser unit thermistor error
• The laser unit thermistor detected a temperature lower than -30°C for more
than 4 sec.
• The laser unit thermistor detected a temperature higher than 105°C for more
than 1 sec.
• Thermistor disconnected (causes an extremely low temperature reading)
• Defective harness
• Defective main board
1. Turn the power OFF and ON.
2. Replace the laser unit thermistor.
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