Konica-Minolta bizhub 654e

Tray 2 feed section

Detection timing

12-01	The leading edge of the paper does not turn ON the tray 2 vertical transport sensor (PS12) even after the lapse of a given period of time after the tray 2 starts to feed paper.
12-40	For paper fed from the tray 2, 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.
-	The tray 2 vertical transport sensor (PS12) 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.

Relevant parts

• Take-up motor (M22)
• Tray 2 paper feed clutch (CL2)
• Tray 2 vertical transport sensor (PS12)
• Tray 2 paper feed sensor (PS13)
• Paper feed/transport drive board (PFTDB)
• Printer control board (PRCB)

Step	Action	Control signal	Location
1	Initial check items
2	PS12 I/O check, sensor check	PFTDB CN14-2 (ON)	3-P
3	PS13 I/O check, sensor check	PFTDB CN13-7 (ON)	3-P
4	CL2 operation check	PFTDB CN13-1 (REM)	2-P
5	M22 operation check	PFTDB CN7-5 to 8
6	PFTDB ICP1, ICP3 or ICP12 conduction check
7	Replace PFTDB
8	PRCB ICP13 conduction check
9	Replace PRCB