Konica-Minolta bizhub 454e

Misfeed at tray 4 feed section

Detection timing

14-01	The leading edge of the paper does not turn ON the tray 4 vertical transport sensor (PS123) even after the lapse of a given period of time after the tray 4 starts to feed paper.
14-40	For paper fed from the tray 4, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
-	Tray 4 vertical transport sensor (PS123) is turned ON when the main power switch is turned ON, a door or cover is opened and closed, or a misfeed or malfunction is reset.
-	Tray 4 paper feed sensor (PS122) is turned ON when the main power switch is turned ON, a door or cover is opened and closed, or a misfeed or malfunction is reset.
-	In case paper position is detected as locating properly after main power switch is turned ON, door and cover are opened / closed or jam/trouble reset is done, it is regarded as paper jam at tray 4 feed section.

Relevant parts

• Tray 4 paper feed motor (M121)
• Tray 4 vertical transport motor (M122)
• Tray 4 paper feed sensor (PS122)
• Tray 4 vertical transport sensor (PS123)
• PC Control board (PCCB)

Step	Action	Control signal	Location
1	Initial check items
2	PS132 I/O check, sensor check	PCCB CN4-11 (ON)	PC-410 7-J
3	PS133 I/O check, sensor check	PCCB CN4-14 (ON)	PC-410 7-J
4	M131 operation check	PCCB CN5-1 to 8	PC-410 5-J
5	M132 operation check	PCCB CN5-9 to 16	PC-410 4-J
6	Replace PCCB