Olivetti d-color MF651, Service Manual, Page: 843 / 1053

Field Service Ver. 2.0 Jul. 2009 19. TROUBLE CODE
783
TROUBLESHOOTING
19.5.46 C1156: Center-staple paddle roller motor malfunction (trailing edge)
(1) When FS-526+SD-508 is installed
(2) When FS-527+SD-509 is installed
Relevant parts
Center staple paddle/T (M29) SD drive board (SDDB)
FS control board (FSCB)
Step Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the motor and sensor connectors for
proper connection, and correct as neces-
sary.
— —
2
Check the connector of M29 for proper
drive coupling, and correct as necessary.
— —
3 M29 operation check SDDB CN404-1 to 5 SD-508 C-8
4 Change M29 — —
5 SDDB ICP5 conduction check — —
6 Change SDDB — —
7 Change FSCB — —
Relevant parts
Upper paddle motor (M21)
Paper detection sensor/1 (PS43)
Paper detection sensor/2 (PS44) SD drive board (SDDB)
FS control board (FSCB)
Step Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the motor and sensor connectors for
proper connection, and correct as neces-
sary.
— —
2
Check the connector of M21 for proper
drive coupling, and correct as necessary.
— —
3 PS43 I/O check, sensor check SDDB PJ9-8 (ON) SD-509 G-1
4 PS44 I/O check, sensor check SDDB PJ13-2 (ON) SD-509 G-3
5 M21 operation check SDDB PJ5-6 to 10 SD-509 B-3
6 Change M21 — —
7 Change SDDB — —
8 Change FSCB — —
Y110571-1 Service Manual