Oki C711 User Manual

44205401TH Rev.1
175 /
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 F4 of the CU/PU board has
blown out or not.
Replace the
CU/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
CU/PU board fuses
F1
Chec
k if the fuse F1 is not open-circuit or not. Replace the
CU/PU board.
24V pow
er that is
supplied to the CU/
PU board.
Check the power supply voltages at the POWER
connector
of the CU/PU board. The follow
voltage must appear respectively.
Pins-7, 8 and 9: 24V
Pins-10, 11 and 12: 0VP
Replace the low
voltage power
supply.

Oki C711 Specifications

General

Brand	Oki
Model	C711
Category	Printer
Language	English