45530603TH Rev.2
4-83
Oki Data CONFIDENTIAL
4. TROUBLESHOOTING PROCEDURE
4.5.3.(3) White print (Refer to Figure 4-2 C)
(3-1)
White print over entire page
Check item
Check work
Actions to be taken
at NG
(3-1-1) Toner condition
Remaining amount
of toner
Confirm that sufficient amount of toner
remains inside the ID unit.
Replace the
toner cartridge.
(3-1-2) Exposure condition to light
LED head
Confirm that the LED head is positioned in the
normal position where the LED head opposes
again the drum when the cover is closed.
Check that no obstacle exists in front of the
LED head, that hampers light emission from
the illuminating surface of the LED head.
Correct the
installation
condition of the
LED head.
Connecting condition
of the LED head
Check that the LED head is normally
connected.
Replace the
LED head.
Drum shaft
・
Check that the drum shaft keeps contacting
with the right and left side plates normally.
・
Check the handle ID with back-lash.
Replace the ID
unit.
To use a new ID
unit for a try, be
sure to use New
Parts Keep Mode
of the System
Maintenance
menu.
Fuse on the Head
power relay PCB
Measure resistance.
Replace the
Head power
relay PCB.
(3-1-3) High voltage terminal
ID unit terminal
Check that the high voltage terminal of the ID
unit is contacting with the Contact Assembly
normally by visual inspection. (Refer to Figure
4-3.)
Replace the ID
unit or correct
the high voltage
terminal.
To use a new ID
unit for a try, be
sure to use New
Parts Keep Mode
of the System
Maintenance
menu.
4.5.3.(4) Black banding/black streaking in vertical direction
(4-1)
Thin vertical line (with color) (Refer to Figure 4-2 D)
Check item
Check work
Actions to be taken
at NG
(4-1-1) ID unit condition
Filming of the ID
unit
Is print attempted without toner?
Replace toner
cartridge with
new one. If
replacement
does not solve
the problem,
replace the ID
unit. To use a
new ID unit for
a try, be sure to
use New Parts
Keep Mode
of the System
Maintenance
menu.
(4-2)
Thin vertical line (without color) (Refer to Figure 4-2 F)
Check item
Check work
Actions to be taken
at NG
(4-2-1) LED head condition
LED head
Is any foreign material attached on the light
emitting surface of the cell fox lens of the LED
head?
Remove
the foreign
material.
(4-2-2) Condition of paper running path
Paper running path
Check that any burr that may scatter the un-
fused toner on the paper running path does
not exist.
Remove the
burr.
