Black Banding/Black Streaking In Vertical Direction; Thin Vertical Line (With Color) (Refer To Figure 2-1 D.); Thin Vertical Line (Without Color) (Refer To Figure 2-1 F.); Periodic Abnormalities (Refer To Figure 2-1 E.) - Oki MC873dn Maintenance Manual

Oki Data CONFIDENTIAL
2.5.6.(4)

Black banding/black streaking in vertical direction

(4-1)

Thin vertical line (with color) (Refer to Figure 2-1 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 2-1 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.
45850101TH Rev.1
Actions 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.
Actions to be taken
Check work
at NG
Remove
the foreign
material.
Remove the
burr.
2.5.6.(5)

Periodic abnormalities (Refer to Figure 2-1 E.)

(5-1)

Periodic 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 37.2 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 142.6 mm.
BU Roller of fuser Check that the cycle is 113.1 mm.
Transfer roller Check that the cycle is 50.3 mm.
2. TROUBLESHOOTING PROCEDURES
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.
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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