Konica-Minolta bizhub 654e

Tray 3 feed section

Detection timing

13-01	The leading edge of the paper does not block the tray 3 paper feed sensor (PS21) even after the lapse of a given period of time after the tray 3 starts to feed paper.
13-40	For paper fed from the tray 3, 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 3 paper feed sensor (PS21) 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 parts

• LCC transport motor (M25)
• Tray 3 paper feed clutch (CL5)
• Tray 3 paper feed sensor (PS21)
• Paper feed/transport drive board (PFTDB)
• Printer control board (PRCB)

Step	Action	Control signal	Location
1	Initial check items
2	PS21 I/O check, sensor check	PFTDB CN20-9 (ON)	6-X
3	CL5 operation check	PFTDB CN19-5 (REM)	5-X
4	M25 operation check	PFTDB CN17-1 to 7	11-X
5	PFTDB ICP3 or ICP12 conduction check
6	Replace PFTDB
7	PRCB ICP13 conduction check
8	Replace PRCB