20-20 (bizhub 958/808)

Contents

JAM type	Misfeed at vertical transport section
JAM code	20-20
JAM detection timing	The tray 1 vertical transport sensor (PS4) is not turned ON even after the lapse of a given period of time after the tray 2 vertical transport sensor (PS12) turns ON by a paper.
Misfeed processing location	• Manual bypass tray door  • Lower right door
Relevant parts	• Tray 1 vertical transport motor (M5)  • Tray 2 vertical transport motor (M7)  • Tray 1 vertical transport sensor (PS4)  • Tray 2 vertical transport sensor (PS12)  • Registration sensor (PS38)  • OHP sensor (PS40)  • Paper feed/transport drive board (PFTDB)  • MFP board (MFPB)

 Procedure

Step	Action	Control signal	Location of electrical component
1	Initial check items	–	–
2	PS4 I/O check, sensor check	PFTDB CN14-8 (ON)	1-P
3	PS12 I/O check, sensor check	PFTDB CN12-10 (ON)	3-P
4	PS38 I/O check, sensor check	PFTDB CN2-6 (ON)	4-P
5	PS40 I/O check, sensor check	PFTDB CN2-3 (REM)	4-P
6	M5 operation check	PFTDB CN10-5 to 8	13-P
7	M7 operation check	PFTDB CN10-9 to 12	13-P
8	PFTDB F13 conduction check	–	–
9	Replace PFTDB. (Part# A796H00200)	–	–
10	Replace MFPB. (Part# A796H02003)	–	–

• Link to the wiring diagram (bizhub 958/808/758, bizhub PRO 958)

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

K.1.7.1 (Link to the Field Service Manual)