C1127 (bizhub 958/808)

Trouble type	C1127: Punch oscillating motors drive malfunction
Rank	B
Trouble detection condition	<When FS-537+PK-523 or FS-537SD+PK-523 is installed> The PKpunch oscillatinghome sensor (PS303) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed while the punch oscillating motor (M302) is energized.
Problem Unit Isolation Set.	Punch
Relevant electrical parts	• Punch oscillating motor (M302) • PK punch oscillatinghome sensor (PS303) • Punch control board (PKCB) • FS control board (FSCB)

 Procedure

1. Check the connector between M302-relay CN342-relay CN341-PKCB CN1 for proper connection and correct as necessary.
2. Check the connector of M302 for proper drive coupling and correct as necessary.
3. Check the connector between PS303-relay CN342-relay CN341-PKCB CN37 for proper connection and correct as necessary.
4. PS303 I/O check, sensor check
   • Control signal: PKCB CN37-2 (ON)
   • Location of electrical component: PK-523 5-C
5. M302 operation check
   • Control signal: PKCB CN1-1 to 6
   • Location of electrical component: PK-523 5-C
6. Replace M302. (Part# A11TM10100)
7. PKCB ICP2 conduction check.
8. Replace PKCB. (Part# A99KH00103)
9. Replace FSCB. (Part# A87HPP9M01)

NOTICE

• Link to the wiring diagram (PK-523)

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

K.3.7.17 (Link to the Field Service Manual)