Field Service Ver. 1.0 Jun. 2008
17. Malfunction code
311
T
roubleshooting
17.5.51
C5351: Power supply cooling fan motor’s failure to turn
17.5.52
C5354: Exhaust fan motor’s failure to turn
Relevant parts
Power supply cooling fan motor (FM8)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the FM8 connector for proper
connection and correct as necessary.
—
—
2
Check the fan for possible overload and
correct as necessary.
—
—
3
FM8 operation check
PRCB CN22-8 (ON)
PRCB CN22-9 (LOCK)
K-8
4
Change FM8
—
—
5
Change DCPU
—
—
6
Change PRCB
—
—
Relevant parts
Exhaust fan motor (FM14)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the FM14 connector for proper
connection and correct as necessary.
—
—
2
Check the fan for possible overload and
correct as necessary.
—
—
3
FM14 operation check
PRCB CN5-1 (REM)
PRCB CN5-3 (LOCK)
C to D-3
4
Change FM14
—
—
5
Change PRCB
—
—
d
-Color
M
F
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Y109660-1 Sevice Manual