Konica-Minolta bizhub C3110

Detection timing

JAM type	Detection timing
Detection of jam at duplex paper transport section	• The duplex conveyance sensor (PS9) is not blocked even after the lapse of a given period of time after the paper has unblocked PS9.
	• The duplex conveyance sensor (PS9) is not unblocked even after the lapse of a given period of time after the paper has blocked the exit sensor (PS8).
Detection of paper left at duplex paper transport section	• The duplex conveyance sensor (PS9) is unblocked when the power switch is turned ON, a door or cover is opened and closed, or a jam or malfunction is reset.

Relevant electrical parts

• Exit sensor (PS8)
• Duplex conveyance sensor (PS9)
• Duplex conveyance roller clutch (CL13)

• Printer control board (PRCB)
• Transport motor (M2)

Action

Step	Action	Control signal	Location
1	Initial check items
2	Check the connector between M2-PRCB CN11 for proper connection and correct as necessary.
3	Check the M2 connector for proper drive coupling and correct as necessary.
4	Check the connector between PS8-PRCB CN15 for proper connection and correct as necessary.
5	Check the connector between PS9-PRCB CN14 for proper connection and correct as necessary.
6	Check the connector between CL13-relay CN20-PRCB CN14 for proper connection and correct as necessary.
7	PS8 sensor check	PRCB CN15-9 (ON)	15-I
8	PS9 sensor check	PRCB CN14-3 (ON)	7-B
9	CL13 operation check	PRCB CN14-5 (REM)	7-C
10	M2 operation check	PRCB CN11-10 to 13	15-C
11	Replace PRCB.