Oki C301 Maintenance Manual

44951501TH Rev.2
7-61
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
7.5.3 (4) Vertical lines are produced in printed pages.
(4-1) Fine lines (colored) (see Fig. 7-2 D)
Check item Check operation
Actions for NG
results
(4-1-1) ID unit state
ID unit filming Were pages printed with toner empty? 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 Check operation
Actions for NG
results
(4-2-1) LED head state
LED head Do foreign matters adhere to the Selfoc lens’
light-emitting face of any LED head?
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.
7.5.3 (5) Print quality problems appear periodically (see Fig. 7-2 E).
(5-1) Print quality problems appear vertically and periodically.
Check item Check operation
Actions for NG
results
(5-1-1) Cycle
Image drum Check if the cycle is 94.3 mm. Replace any
applicable ID
unit.
Developing roller Check if the cycle is 30.2 mm. Replace any
applicable ID
unit.
Toner supply roller Check if the cycle is 43.1 mm. Replace any
applicable ID
unit.
Charging roller Check if the cycle is 29.9 mm. Replace any
applicable ID
unit..
Roller above the
fuser
Check if the cycle is 85.4 mm. Replace any
applicable fuser
unit.
Fuser belt Check if the cycle is 94.2 mm. Replace any
applicable fuser
unit.
Transfer roller Check if the cycle is 37.7 mm. Replace the belt
unit.
When using any
new consumable
as a try, select
FUSE KEEP
MODE of
the system
maintenance
menu.

Oki C301 Specifications

General

Brand	Oki
Model	C301
Category	Printer
Language	English