C1156 (bizhub 950i/850i)

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When FS-539SD is installed

Contents

Trouble type	C1156: SD paddle motor malfunction (When FS-539SD is installed)
Rank	B
Trouble detection condition	The paddle home sensor (PS105) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the SD paddle motor (M107) is energized.
Trouble isolation	Center Stapling/Half-Fold/Tri-Fold
Relevant electrical parts	– SD paddle motor (M107) – Paddle home sensor (PS105) – SD control board (SDCB) – FS control board (FSCB)

Procedure

1. Check the connector between M107-SDCB J8 for proper connection and correct as necessary.
2. Check the connector of M107 for proper drive coupling and correct as necessary.
3. Check the connector between PS105-SDCB J8 for proper connection and correct as necessary.
4. PS105 I/O check, sensor check
   • Control signal: SDCB J8-3 (ON)
   • Location of electrical component: FS-539/FS-539SD 4-P
5. M107 operation check
   • Control signal: SDCB J8-4 to 7
   • Location of electrical component: FS-539/FS-539SD 4-P
6. Replace M107.
7. Replace SDCB.
8. Replace FSCB.

 When FS-540SD is installed

Contents

Trouble type	C1156: SD paddle motor malfunction (When FS-540SD is installed)
Rank	B
Trouble detection condition	The paddle home sensor (PS105) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the SD paddle motor (M107) is energized.
Trouble isolation	Center Stapling/Half-Fold/Tri-Fold
Relevant electrical parts	– SD paddle motor (M107) – Paddle home sensor (PS105) – SD control board (SDCB) – FS control board (FSCB)

Procedure

1. Check the connector between M107-SDCB J8 for proper connection and correct as necessary.
2. Check the connector of M107 for proper drive coupling and correct as necessary.
3. Check the connector between PS105-SDCB J8 for proper connection and correct as necessary.
4. PS105 I/O check, sensor check
   • Control signal: SDCB J8-3 (ON)
   • Location of electrical component: FS-540/FS-540SD 4-P
5. M107 operation check
   • Control signal: SDCB J8-4 to 7
   • Location of electrical component: FS-540/FS-540SD 3-P
6. Replace M107.
7. Replace SDCB.
8. Replace FSCB.

(Link to the Field Service Manual)