Olivetti d-color MF651, Service Manual, Page: 833 / 1053

Field Service Ver. 2.0 Jul. 2009 19. TROUBLE CODE
773
TROUBLESHOOTING
19.5.27 C1125: Sheet feeder up/down drive failure (upper)
19.5.28 C1127: Punch shift motor drive malfunction
Relevant parts
Tray lift motor /Up (M201)
Tray upper limit sensor /Up (PS204)
Tray lower limit sensor /Up (PS205) PI drive board (PIDB)
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 M201 for proper
drive coupling, and correct as necessary.
— —
3 PS204 I/O check, sensor check PIDB CN55-8 (ON) PI-505 C to D-5
4 PS205 I/O check, sensor check PIDB CN55-7 (ON) PI-505 C to D-6
5 M201 operation check PIDB CN54-7 to 8 PI-505 C to D-4
6 Change M201 — —
7 PIDB ICP2 conduction check — —
8 Change PIDB — —
9 Change FSCB — —
Relevant parts
Punch drive motor (M301)
PK punch home sensor (PS301) Punch control board (PKDB)
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 M301 for proper
drive coupling, and correct as necessary.
— —
3 PS301 I/O check, sensor check PKDB CN36-5 (ON) PK-516 C-3
4 M301 operation check PKDB CN35-1 to 3 PK-516 C-2
5 Change M301 — —
6 PKDB ICP4 conduction check — —
7 Change PKDB — —
8 Change FSCB — —
Y110571-1 Service Manual