Motor Fan Error(Error 120, 127, 051) - Oki C810 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.2.(12) Motor Fan Error(Error 120, 127, 051)

(12-1) Low voltage power unit fan or CU fan does not rotate right after turning on the power
Confirmation Items
(12-1-1) Connections and laying of cords
Connections and Check to see if the connectors are properly
laying of cords of connected.
low-voltage power Check to see if the surplus portion of a cord is
supply fan, fuser fan touching the blades of any fan
and CU fan
(12-2) DUPLEX fan does not rotate in DUPLEX printing
Confirmation Items
(12-2-1) Connection and laying of cord
Connection and Check to see if the connector is properly
laying of Duplex fan connected.
cord Check to see if the surplus portion of the cord is
touching the blades of the fan.
24V fuse F501 of Check to see if the fuse F501 is blown out or
duplex PCB (V7Y not.
PCB)
24V supply of Check to see if the fuse F3 of the PU PCB is
duplex PCB (V7Y blown out or not.
PCB)
(12-3) Every fan in the machine does not rotate
Confirmation Items
(12-3-1) 24V power supply
Fuses F2 and F4 of Check to see if the F2 and F4 are open or not.
PU PCB
24V power supplied Check the power through the POWER
to PU PCB connector of the PU PCB.
Pins 4, 5, 6: 24V
Pin 8: 0VL
Pins 1, 2, 3: 0VP
44072903TH Rev.1
Confirmation Tasks Action at NG
Redo the
insertion of the
connector.
Modify the cord
laying route.
Replace the fan.
Confirmation Tasks Action at NG

Redo the
insertion of the
connector.
Correct the cord
laying route.
Replace the fan.
Replace the
duplex PCB
(V7Y PCB).
Replace the PU
PCB.
Confirmation Tasks Action at NG

Replace the PU
PCB.
Replace the low-
voltage power
supply.
7.5.2.(13) Print Speed is Slow (Low Performance)
(13-1) Print speed decreases
Confirmation Items
(13-1-1) Setting of Media Weight
Media Weight Check to see if a wrong Media Weight is
specified for printing specified.
7. TROUBLESHOOTING PROCEFRURES
Confirmation Tasks Action at NG
Correct the
Media Weight.
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