93-10 (bizhub C759/C659)

PostedOctober 25, 2019

ByAdministrator Administrator

Contents

JAM type	Misfeed at duplex transport section
JAM code	93-10
JAM detection timing	The ADU paper passage sensor/2 (PS48) is not turned ON (unblocked) even after the set period of time has elapsed after the ADU paper passage sensor/1 (PS47) turns ON (block) by the paper.
–	Paper jam of a sheet of paper left at the duplex transport section results, if the ADU paper passage sensor/1 (PS47) is turned ON (blocked) or the ADU paper passage sensor/2 (PS48) is turned ON (unblocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
–	When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the duplex transport section results, if the ADU paper passage sensor/1 (PS47) is turned from OFF (unblocked) to ON (blocked).
–	When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the duplex transport section results, if the ADU paper passage sensor/2 (PS48) is turned from OFF (blocked) to ON (unblocked).
Misfeed processing location	Duplex door
Relevant parts	-ADU transport motor/1 (M31) -ADU transport motor/2 (M32) -ADU paper passage sensor/1 (PS47) -ADU paper passage sensor/2 (PS48) -Paper feed/transport drive board (PFTDB) -MFP board (MFPB)

Procedure

Step	Action	Control signal	Location of electrical component
1	Initial check items	–	–
2	PS47 I/O check, sensor check	PFTDB CN28-3 (ON)	6-P
3	PS48 I/O check, sensor check	PFTDB CN28-6 (ON)	7-P
4	M31 load check -Check code: 85 -Multi code: 1, 2, 3, 4	PFTDB CN28-14 to 17	8-P
5	M32 load check -Check code: 85 -Multi code: 5, 6, 7, 8	PFTDB CN28-10 to 13	7-P
6	PFTDB F10 conduction check	–	–
7	Replace PFTDB. (Part# A795H00200)	–	–
8	Replace MFPB. (Part# A8JEH02002)	–	–

L.1.11.2 (Link to the Field Service Manual)