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19. TROUBLE CODE
Field Service Ver. 2.0 Jul. 2009
818
TROUBLESHOOTING
19.5.146 C5356: Cooling fan motor’s failure to turn
5
19.5.147 C5370: MFP control board cooling fan motor’s failure to turn
Relevant parts
Cooling fan motor (FM3)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the FM3 connector for proper
connection and correct as necessary.
—
—
2
Check the fan for possible overload and
correct as necessary.
—
—
3
FM3 operation check
PRCB CN15-4 (REM)
PRCB CN15-6 (LOCK)
K-7 to 8
4
Change FM3
—
—
5
PRCB ICP6 conduction check
—
—
6
Change MFPB
—
—
Relevant parts
MFP control board cooling fan motor (FM17)
Slide Interface board (REYB/SL)
MFP board (MFPB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the FM17 connector for proper
connection and correct as necessary.
—
—
2
Check the fan for possible overload and
correct as necessary.
—
—
3
FM17 operation check
MFPB PJ26-3 (LOCK)
O-26
4
Change FM17
—
—
5
Change REYB/SL
—
—
6
Change MFPB
—
—
Service Manual Y110571-1
Summary of Contents for d-color MF651
Page 1: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 24: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 22 Blank Page...
Page 27: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 1053: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 10 2009 1ST EDITION 1053053 Y110571 1...