Field Service Ver. 2.0 Jul. 2009 19. TROUBLE CODE
817
TROUBLESHOOTING
19.5.144 C5351: Power supply cooling fan motor/1’s failure to turn
19.5.145 C5354: Ozone ventilation fan motor’s failure to turn
Relevant parts
Power supply cooling fan motor/1 (FM9) DC power supply (DCPU)
Printer control board (PRCB)
Step Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1 Check the FM9 connector for proper
connection and correct as necessary.
——
2 Check the fan for possible overload and
correct as necessary.
——
3 FM9 operation check DCPU PJ008-3 (LOCK) W-15 to 16
4 Change FM9 — —
5 DCPU F551 conduction check — —
6 Change DCPU — —
7 Change PRCB — —
Relevant parts
Ozone ventilation fan motor (FM6) Printer control board (PRCB)
Step Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1 Check the FM6 connector for proper
connection and correct as necessary.
——
2 Check the fan for possible overload and
correct as necessary.
——
3 FM6 operation check PRCB CN11-4 (REM)
PRCB CN11-6 (LOCK)
K-7
4 Change FM6 — —
5 PRCB ICP9 conduction check — —
6 Change MFPB — —
Y110571-1 Service Manual
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