11) Motor Fan Error(Error 120,127,051); Motor Fan Error(Error 120,127,051); 12) Print Speed Is Slow (Low Performance); Print Speed Is Slow (Low Performance) - Oki C8800 Maintenance Manual

7.5.2.(11)

Motor Fan Error(Error 120,127,051)

(11-1) Low voltage power unit fan or CU fan does not rotate right after turning on the power
Confirmation Items
(11-1-1) Connections and laying of cords
Connections and laying of
cords of low-voltage power
supply fan, fuser fan and
CU fan

(11-2) DUPLEX fan does not rotate in DUPLEX printing

Confirmation Items
(11-2-1) Connection and laying of cord
Connection and laying of
Duplex fan cord
24V fuse F501 of duplex
PCB (V7Y PCB)
24V supply of duplex PCB
(V7Y PCB)

(11-3) Every fan in the machine does not rotate

Confirmation Items
(11-3-1) 24V power supply
Fuses F2 and F4 of PU
PCB
24V power supplied to PU
PCB
7.5.2.(12)

Print Speed is Slow (Low Performance)

(12-1) Print speed decreases

Confirmation Items
(12-1-1) Setting of Media Weight
Media Weight specified for
printing
43170003TH Rev.2
Confirmation Tasks
Check to see if the connectors are properly connected.
Check to see if the surplus portion of a cord is touching
the blades of any fan.
Confirmation Tasks
Check to see if the connector is properly connected.
Check to see if the surplus portion of the cord is touching
the blades of the fan.
Check to see if the fuse F501 is blown out or not.
Check to see if the fuse F3 of the PU PCB is blown out
or not.
Confirmation Tasks
Check to see if the F2 and F4 are open or not.
Check the power through the POWER connector
the PU PCB.
Pins 4, 5, 6: 24V
Pin 8: 0VL
Pins 1, 2, 3: 0VP
Confirmation Tasks
Check to see if a wrong Media Weight is specified.
Oki Data CONFIDENTIAL
Action at NG
Redo the insertion
of the connector.
Modify the cord
laying route. Replace
the fan.
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.
Action at NG
Replace the PU
PCB.
of Replace the low-
voltage power
supply.
Action at NG
Correct the Media
Weight.
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