Sharp AR-C200P - Color Laser Printer Manual de servicio Pagina 128

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AR-C200P Rev.5 128 /
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-980k 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-980k 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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