Konica-Minolta bizhub C300

Detection timing

Type	Description
Detection of misfeed at tray 2 feed section	The leading edge of the paper does not block the tray 2 vertical transport sensor (PC8-PC) even after the lapse of a given period of time after the tray 2 paper feed motor (M1-PC) has been energized.
Detection of misfeed at tray 2 vertical transport section	The registration roller sensor (PC1) is not blocked even after the lapse of a given period of time after the paper has blocked the tray 2 vertical transport sensor (PC8-PC).
	Tray 2 vertical transport sensor (PC8-PC) does not transmit the paper even after the lapse of a given period of time after the paper has blocked PC8-PC.
Tray 2 vertical transport section loop registration reversing jam	Rise timing of load for registration is earlier than the one for making the loop at front of the registration roller at tray 2 feed.
Detection of paper left in tray 2	Tray 2 vertical transport sensor (PC8-PC) is blocked when the main power switch is turned ON, a door or cover is opened and closed, or a misfeed or malfunction is reset.
	Tray 2 paper take-up sensor (PC9-PC) is blocked when the main power switch is turned ON, a door or cover is opened and closed, or a misfeed or malfunction is reset.

Relevant electrical parts

Tray 2 paper take-up sensor (PC9-PC)
Tray 2 vertical transport sensor (PC8-PC)
Registration roller sensor (PC1)
Tray 2 paper feed motor (M1-PC)

PC control board (PCCB)
Mechanical control board (MFPB)

Action

Step	Action	Control signal	Location
1	Initial check items.
2	PC9-PC I/O check, sensor check	PCCB PJ6PCCB-8 (ON)	S-25
3	PC8-PC I/O check, sensor check	PCCB PJ6PCCB-11 (ON)	S-25
4	PC1 I/O check, sensor check	MFPB CNSEN-3 (ON)	C-3
5	M1-PC operation check	PCCB PJ5PCCB-1 to 4	M-25
6	Change PCCB
7	Change MFPB