4) Black Banding/Black Streaking In Vertical Direction; Black Banding/Black Streaking In Vertical Direction; 5) Cyclic Abnormality (Refer To Figure 7-2 E.); Cyclic Abnormality (Refer To Figure 7-2 E.) - Oki C810 Maintenance Manual

Oki Data CONFIDENTIAL
7.5.3.(4)

Black banding/black streaking in vertical direction

(4-1) Thin vertical line (with color) (Refer to Figure 7-2 D.)

Check item
(4-1-1) ID unit condition
Filming of the ID Is print attempted without toner?
unit

(4-2) Thin vertical line (without color) (Refer to Figure 7-2 F.)

Check item
(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?
(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.
44015503TH Rev. 1
Action to be taken
Check work
at NG
Replace toner
cartridge with
new one. If
replacement
does not solve
the problem,
replace the
ID unit. If any
attempt of using
new ID unit as
a trial is going
to be made,
be sure to use
the System
Maintenance
Menu FUSE
KEEP MODE.
Action to be taken
Check work
at NG
Remove the
foreign material.
Remove the
burr.
7.5.3.(5)

Cyclic abnormality (Refer to Figure 7-2 E.)

(5-1) Cyclic abnormality occurs in vertical direction

Check item
(5-1-1) Cycle
Image drum Check that the cycle is 94.3 mm.
Developing roller Check that the cycle is 39.7 mm.
Toner feed roller Check that the cycle is 58.4 mm.
Charge roller Check that the cycle is 37.7 mm.
Roller on top of fuser Check that the cycle is 87.7 mm.
Fuser belt Check that the cycle is 125.5 mm.
Transfer roller Check that the cycle is 50.3 mm.
7. TROUBLESHOOTING PROCEDURE
Action 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.
Replace the belt
unit.
If any attempt
of using new
consumable
item as a trial
is going to be
made, be sure to
use the System
Maintenance
Menu FUSE KEEP
MODE.
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