Motor Fan Error (Error Code 122, 128); The Low Voltage Power Supply Fan Does Not Rotate Immediately After The Power Is Turned On; All Fans Of The Printer Do Not Rotate; Print Speed Is Slow. (Performance Is Low.) - Oki MC362w Maintenance Manual

Oki Data CONFIDENTIAL

7.5.5. (12) Motor fan error (error code 122, 128)

(12-1) The low voltage power supply fan does not rotate immediately after the power is
turned on.
Check item
(12-1-1) Cable connection condition and wiring condition
Cable connection Check if the connectors are connected
condition and wiring normally or not.
condition of the Check if extra length of the cables does not
low voltage power touch the fan blade or not.
supply fan and those
of the fuser fan

(12-2) All fans of the printer do not rotate.

Check item
(12-2-1) 24V power supply
CU/PU board fuses, Check if the fuses F4 and F5 are not open-
F4 and F5 circuit or not.
24V power supplied Check the power supply voltages at the
to the CU/PU board POWER connector
Pins 7, 8 and 9: 24V
Pins 4, 5 and 6: 0VL
Pins 10, 11 and 12: 0VP

7.5.5. (13) Print speed is slow. (Performance is low.)

(13-1) Print speed decreases.

Check item
(13-1-2) Media Weight setting
Media Weight that is Check if the wrong Media Weight has been
specified for the print specified or not.
44952001TH Rev.2
Checking method Action in case of NG
Correct the connection
condition of the
connectors. Correct
the cable wiring route.
Replace the fan.
Checking method Action in case of NG
24V power supplied to
the CU/PU board
Replace the low
of the CU/PU board. voltage power supply.
Checking method Action in case of NG
Correct the Media
Weight.

7.5.5. (14) Option unit cannot be recognized.

(14-1) Option tray unit cannot be recognized.

Check item Checking method
(14-1-1) Option try board
Option tray unit Check if the option tray unit in use is
of MC562dn, MC362dn or MC352dn
specification.
(14-1-2) Check the system connection
Connection between Check that the cord between the 2ND
the CU/PU board connector
and the option tray
option tray board is properly connected.
board
Square connector Check if any foreign material exists in the
connecting the connecting portion of the square connector.
option tray unit with
the main unit
Square connector Is the terminals of the square connector
connecting the damaged?
option tray unit with
the main unit
(14-1-3) Check the control signals.
Control signal that Check the control signals that are output
is output from the
from the 2ND connector
CU/PU board to the
board.
option tray board
Pin 6: TXD (PU -> 2nd)
Pin 5: RXD (2nd -> PU)
7. TROUBLESHOOTING PROCEDURES
Action in case of NG
Replace it with an
appropriate option tray
unit.
Correct the
of the CU/PU board and the connections.
Remove the foreign
material.
Replace the
connector.
Replace the CU/PU
⑬
board.
of the CU/PU
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