5) Cyclic Abnormal Print (Refer To Fig. 7-2 E); Cyclic Abnormal Print In Vertical Direction; 6) Color Registration Error Is Heavy; Message "Color Adjustment In Progress" At Power On Is Display Short Time - Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.3.(5) Cyclic abnormal print (Refer to Fig. 7-2 E)

(5-1) Cyclic abnormal print in vertical direction.

Check item
(5-1-1) Cycle
Image drum Check if the cycle is 94. 3mm.
Developer roller Check if the cycle is 39. 7mm.
Toner feed roller Check if the cycle is 58. 4mm.
Charge roller Check if the cycle is 37. 7mm.
Fuser unit upper Check if the cycle is 87. 7mm.
roller
Fuser unit belt Check if the cycle is 125. 5mm.
Transfer roller Check if the cycle is 50. 3mm.
43967002TH Rev. 1
Check work Action to be taken at NG
Replace the ID unit.
Replace the ID unit.
Replace the ID unit.
Replace the ID unit.
Replace the fuser
unit.
Replace the fuser
unit.
Replace the belt
unit.
If any attempt of
using new part as
a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.

7.5.3.(6) Color registration error is heavy

(6-1) Message "Color adjustment in progress" at power on is display short time

Check item
(6-1-1) Color registration error correction result
Color registration Execute REG. ADJ. UST. TEST with
error correction time the self-diagnostic mode and check the
(Approx 40 seconds result. If the MFP is ON. LINE, error is not
if normal) displayed even if error is issued inside.
(6-1-2) Toner
Residual amount of Confirm that the message "Please Install
toner Toner" or "Toner Enpty" is not displayed on
the Operator Panel screen.
(6-1-3) Color registration error sensor
Sensor is dirty. Are toner and paper dust attracted to
paper?
(6-1-4) Color registration error sensor shutter
Shutter operation is Check the shutter operation by the self-
defective. diagnostic function.
(6-2) Color registration error even though the Engine Maintenance Function "REG.
ADJUST TEST" shows OK
Check item
(6-2-1) Paper feed system
Paper feeding Check if there is any foreign material that
condition of the prevents smooth paper running during the
paper running path. course of paper running path.
7. Troubleshooting
Check work Action to be taken at NG
Replace the sensor
causing NG. Clean
the sensor.
Replace shutter.
Replace PU PCB.
Replace the toner
cartridge with new
one.
Wipe off stain.
Replace shutter or
repair mechanism.
Check work Action to be taken at NG
Remove obstacle.
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