Konica-Minolta bizhub C353

Detection timing

Type	Description
Detection of misfeed at duplex pre-registration section	• The leading edge of the paper does not turn ON the sensor in front of tim. roller (PS23) even after the lapse of a given period of time after a duplex paper feed sequence has been started.
Duplex pre-registration section loop registration reversing jam detection	• For the second-side feed of paper in the duplex mode, loop forming has not been complete before the second side of a sheet enters the timing roller because the rise timing of load to perform registration is earlier than the rise timing of load to form a loop.
Duplex pre-registration section TOD permit waiting jam	• For the second-side feed of paper in the duplex mode, TOD permit continues to be disabled for a predetermined period of time after the timing of TOD output.

Relevant electrical parts

Transport motor (M1)
Duplex transport motor (M7)
Sensor in front of tim. roller (PS23)

Printer control board (PRCB)

Action

Step	Action	Control signal	Location
1	Initial check items.
2	PS23 I/O check, sensor check	PRCB CN1PRCB-3 (ON)	D-18
3	M1 operation check	PRCB CN34PRCB-10 (REM) PRCB CN34PRCB-13 (LOCK)	D-23
4	M7 operation check	PRCB CN4PRCB-1 to 4	D-3
5	Change PRCB