C6104 (bizhub 958/808)

Contents

Trouble type	C6104: Back side cleaning home sensor abnormality (initial)
Rank	B
Trouble detection condition	• The back side cleaning home sensor (PS9) does not change from H to L even after the lapse of a given period of time after the home position detecting operation is started at the initial operation. • The back side cleaning home sensor (PS9) does not change from H to L even after the lapse of a given period of time after the home position detecting operation is started at the initial operation.
Trouble isolation	Scanner
Relevant electrical parts	• Back side cleaning home sensor (PS9) • Back side cleaning motor (M7) • DF control board (DFCB)

 Procedure

1. Check the connector between M7-DFCB CN14 for proper connection and correct as necessary.
2. Check the connector of M7 for proper drive coupling and correct as necessary.
3. Check the connector between PS9-relay CN121-DFCB CN18 for proper connection and correct as necessary.
4. PS9 I/O check, sensor check
   • Control signal: DFCB CN18-6 (ON)
   • Location of electrical component: DF 3 to 4-C
5. M7 operation check
   • Control signal: DFCB CN14-6 to 9
   • Location of electrical component: DF 6-C
6. Replace M7. (Part# A796M10900)
7. DFCB ICP4 or ICP8 conduction check.
8. Replace DFCB. (Part# A782H0010A)

NOTICE

• Link to the wiring diagram (Dual scan document feeder)

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

K.3.12.4 (Link to the Field Service Manual)