17. Malfunction code
Field Service Ver. 1.0 Jun. 2008
310
T
roubleshooting
17.5.45
C4551: Laser malfunction (C)
17.5.46
C4552: Laser malfunction (M)
17.5.47
C4553: Laser malfunction (Y)
17.5.48
C4554: Laser malfunction (K)
17.5.49
C5102: Transport motor’s failure to turn
17.5.50
C5103: Transport motor’s turning at abnormal timing
Relevant parts
PH unit
PH relay board (REYBPH)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the connector for proper connection
and correct as necessary.
—
—
2
Change PH unit
—
—
3
Change REYBPH
—
—
4
Change PRCB
—
—
Relevant parts
Transport motor (M1)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the M1 connector for proper
connection and correct as necessary.
—
—
2
Check M1 for proper drive coupling and
correct as necessary.
—
—
3
Check the PRCB connector for proper
connection and correct as necessary.
—
—
4
M1 operation check
PRCB CN27-14 (REM)
PRCB CN28-2 (LOCK)
C to D-23
5
Change M1
—
—
6
Change PRCB
—
—
d-Color MF201
Service Manual Y109660-1