44346001TH Rev.1
11 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
7.5.3 (1) Color is faint and fades across pages (see Fig. 7-2 A).
(1-1) Color is faint and fades.
Check item
Check operation
Actions for NG
results
(1-1-1) Toner
Remaining toner
amount
Check the operator panel if it displays “Prepare
to replace the toner cartridge” or “Replace the
toner cartridge.”
Replace any
applicable toner
cartridge with
a new toner
cartridge.
Tape at the toner
cartridge opening
Check to make sure that the tape is removed
from each toner cartridge opening.
Move the toner
cartridge lever
to the closed
position and
remove any
applicable
tape from the
opening.
(1-1-2) LED head
LED head lens
Check the LED head lens if its surface is dirty
with toner or paper dust.
Clean them with
soft tissue paper.
LED head attaching
state
Check the LED head if it is properly set into
the LED head holder. Check the tension
spring on the both sides if they are set
properly.
Correct them
so that they are
properly set.
(1-1-3) Print media
Media type
Check if the media used for printing is
especially thick.
Use standard
paper.
Check item
Check operation
Actions for NG
results
(1-1-4) High-voltage terminal
ID unit terminal
Visually check each ID unit high-voltage
terminal if it contacts the contact assembly
properly. (See Fig. 7-3.)
Replace any
applicable ID unit
or correct any
applicable high-
voltage terminal.
When using a
new ID unit as a
try, select FUSE
KEEP MODE
of the system
maintenance
menu.
(1-1-5) ID unit installation state
ID unit down
position (transfer
error)
Take out and insert each ID unit by hand to
check that there is no abnormal load and it
goes down to normal down position. If the
top end of a sheet of paper inserted between
the drum and the belt is bent easily, it means
improper installation state.
Check the
U-groove
of the side
plate for any
abnormality.
If it is not
repairable,
replace the unit.
