Oki C821 Maintenance Manual

44015503TH Rev. 1
214 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING PROCEDURE
7.5.3.(3) White print (Refer to Figure 7-2 C.)
(3-1) White print over entire page
Check item Check work
Action to be taken
at NG
(3-1-1) Toner condition
Remaining amount
of toner
Confirm that sufficient amount of toner remains
inside the toner cartridge.
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.
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.
F506, fuse on the
CU board
Measure resistance of F506.
1 ohm or less: Normal
Higher than 1 ohm: NG
Replace the CU
board
Check item Check work
Action to be taken
at NG
(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
7-3.)
Replace the ID
unit or correct
the high voltage
terminal.
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.

Oki C821 Specifications

General

Brand	Oki
Model	C821
Category	All in One Printer
Language	English