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5
Fuser unit error
•
Do fuser errors occur right after power ON?
(A)
• Yes Is the heat roller thermister disconnected or generating a short circuit? (See Fig. 5-1)
(Approx. 190k-980kΩ in room temperature of 0-43 degrees Celsius.)
•
Yes Replace the fuser unit.
▼• No Is the back-up roller thermister disconnected or generating a short circuit? (See Fig. 5-1)
(Approx. 190k-980kΩ in room temperature of 0-43 degrees Celsius.)
•
Yes Replace the fuser unit.
▼• No
▼• No
Does a fuser unit error occur approx. three minutes after power ON?
• No Proceed to (A).
▼• Is the heater in the fuser unit turned ON? (Is it hot?)
• Yes Replace the engine board.
▼• No Replace the fuser unit.
▼• No
Is AC voltage output between CN1 connector pin 1 and pin 3 in the low-voltage power unit?
• No Replace the low-voltage power unit.
▼• Yes
Replace the fuser unit.
Figure 5.1
▼
Back-up roller thermister
Heat roller thermister
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