Konica-Minolta bizhub C20

Detection timing

Type	Description
Detection of misfeed at fusing section	The exit sensor/1 (PS8) is not unblocked even after the lapse of a given period of time after the paper has blocked the exit sensor/1 (PS8)
	The duplex transport sensor (PS26) is not unblocked even after the lapse of a given period of time after the paper has blocked the exit sensor/1 (PS8) during paper take-up from the duplex unit.
Detection of paper left in fusing section	The exit sensor/1 (PS8) is blocked when the power switch is turned ON, a door or cover is opened and closed, or a misfeed or malfunction is reset.

Relevant electrical parts

Exit sensor/1 (PS8)
Duplex transport sensor (PS26)

Print control board (PRCB)

Action

Step	Action	Control signal	Location
1	Initial check items.
2	Make the sensor check of exit sensor/1 (PS8) and, if any abnormal condition is found, replace the fuser unit with a new one.
3	PS26 sensor check	PRCB PJ27-3 (ON)	C to D-3
4	Change PRCB.