44952001TH Rev.2
7-83
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING PROCEDURES
7.5.6 (3) Printed pages are blank (see Fig. 7-2 C).
(3-1) A printed pages are entirely blank.
Check item Checking method Action in case of NG
(3-1-1) Toner state
Remaining toner
amount
Check if the amount of toner remaining in
toner cartridges is sufficient.
Replace any toner
cartridge with little
toner.
(3-1-2) Exposure state
LED head Check each LED head and relevant drum
if they face each other at a correct position
when the cover is closed. Check each LED
head’s light-emitting face for anything that
blocks emission of light.
Correct the LED head
position.
LED head
connection state
Check LED heads if they are connected
properly.
Replace any
applicable LED head.
Drum shaft Are drum shafts installed in a manner that
they contact the side plates on both sides
correctly?
Replace any
applicable ID unit.
When using a new
ID unit as a try,
select FUSE KEEP
MODE of the system
maintenance menu.
CU/PU board fuse
F501
Measure resistance values of F501.
1
or less : Normal
1 or more: NG
Replace the CU/PU
board.
(3-1-3) 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
high-voltage board, 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.
7.5.6 (4) Vertical lines are produced in printed pages.
(4-1) Fine lines (colored) (see Fig. 7-2 D)
Check item Checking method Action in case of NG
(4-1-1) ID unit state
ID unit filming Werepagesprintedwithtonerempty? Replace any
applicable toner
cartridge with a new
one. If it doesn’t
solve the problem,
replace the relevant
ID unit. When using a
new ID unit as a try,
select FUSE KEEP
MODE of the system
maintenance menu.
(4-2) Fine lines (white) (see Fig. 7-2 F)
Check item Checking method Action in case of NG
(4-2-1) LED head state
LED head Do foreign matters adhere to the Selfoc
lens’light-emittingfaceofanyLEDhead?
Remove the foreign
matters.
(4-2-2) Paper feed state
Paper feed path Check if the paper feed path reaching the
fusing area have burrs that scrape unfixed
toner.
Remove the burrs.
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General
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