Oki C710, Руководство по обслуживанию

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43856301TH Rev.3
173 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
7.5.2. (12) Motor fan error (error code 122, 127, 128, 918, 051)
(12-1) The low voltage power supply fan does not rotate immediately after the power is turned on.
Check item Check work
Action to be taken
at NG
(12-1-1) Cable connection condition and wiring condition
Cable connection
condition and wiring
condition of the
low voltage power
supply fan and
those of the fuser
fan
Check if the connectors are connected normally
or not.
Check if extra length of the cables does not
touch the fan blade or not.
Correct the
connection
condition of
the connectors.
Correct the
cable wiring
route. Replace
the fan.
(12-2) Duplex fan does not rotate during the Duplex printing.
Check item Check work
Action to be taken
at NG
(12-1-2) Cable connection condition and wiring condition
Cable connection
condition and wiring
condition of the
Duplex fan
Check if the connectors are connected normally
or not.
Check if extra length of the cables does not
touch the fan blade or not.
Correct the
connection
condition of
the connectors.
Correct the
cable wiring
route. Replace
the fan.
Replace the fan.
24V fuse F501 of
the Duplex board
(V7Y PCB)
Check if the fuse F501 has blown out or not. Replace the
Duplex board
(V7Y PCB).
24V power supplied
to the Duplex board
(V7Y PCB).
Check if the fuse F1 of the PU board has blown
out or not.
Replace the PU
board.
(12-3) All fans of the printer do not rotate.
Check item Check work
Action to be taken
at NG
(12-3-1) 24V power supply
PU board fuses F4,
F5
Check if the fuses F4 and F5 are not open-
circuit or not.
Replace the PU
board.
24V power that is
supplied to the PU
board.
Check the power supply voltages at the POWER
connector of the PU board. The follow voltage
must appear respectively.
Pins-4, 5 and 6: 24V
Pin-8: 0VL
Pins-1, 2 and 3: 0VP
Replace the low
voltage power
supply.