Periodic Abnormalities (Refer To Figure 4-2 E); Significant Color Misregistration; Color Misregistration Occurs; Thought Reg Adjust Test Of Engine Maintenance Function Results Ok, Color Misregistration Occurs - Oki C911 Maintenance Manual

Oki Data CONFIDENTIAL
4.5.3.(5)

Periodic abnormalities (Refer to Figure 4-2 E)

(5-1) Periodic abnormality occurs in vertical direction
Check item
(5-1-1) Cycle
Image drum Check that the cycle is 125 mm.
Developing roller Check that the cycle is 38 mm.
Toner feed roller Check that the cycle is 54.6 mm.
Charge roller Check that the cycle is 37.7 mm.
Fuser belt Check that the cycle is 152.7mm.
Fuser lower roller Check that the cycle is 125.7mm.
Transfer Belt Check that the cycle is 1211mm.
45530603TH Rev.2
Actions to be taken
Check work
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
Clean the
transfer belt
(1) Impregnate
a BEMCOT
with primary or
highest quality
ethanol.
(2)Wipe the
Belt unit
not caused
damage.
(3)Wipe
evenly by new
BEMCOT.
To use a new
consumable for
a try, be sure to
use New Parts
Keep Mode
of the System
Maintenance
menu.
4.5.3.(6) Significant color misregistration
(6-1)

Color misregistration occurs.

Check item
(6-1-1) Result of color registration error correction
Color registration Use the self-diagnostic mode and execute the
error correction REG ADJUST TEST. Check the result. Error
time (If a printer is is issued but is not displayed on the ON LINE
normal, it is approx. display.
40 seconds.)
(6-1-2) Toner
Remaining amount Check if the message "Prepare toner
of toner replacement." or "Replace the toner." appears
or not
(6-1-3) Color registration error detection sensor
Sensor is dirty Is toner or paper dust attached to the sensor?
(6-1-4) Color registration error detection sensor shutter
Shutter operation is Check the shutter operation by the self-
faulty diagnostic mode
(6-2) Thought REG ADJUST TEST of engine maintenance function results ok, color
misregistration occurs.
Check item
(6-2-1) Paper feed system
Paper feed system Check if any obstacle exists in the paper
of the paper feeding path, that hampers smooth paper run.
running path
4. TROUBLESHOOTING PROCEDURE
Actions to be taken
Check work
at NG
Replace the
sensor that
causes the
error. Clean
the sensor
to remove
stain. Replace
the shutter.
Replace the
PU/CU PCB.
Replace toner
cartridge with
new one.
Clean the
sensor to
remove stain
Replace the
shutter or tune
the mechanism
Actions to be taken
Check work
at NG
Remove the
obstacle
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