Field Service Ver. 1.0 Jun. 2008
19. Image quality problem
341
T
roubleshooting
14
Hopper unit
Connectors are loose.
YES
Reconnect.
15
Gear is cracked.
YES
Change gear.
16
Image Process
Adjustment
o
Toner Supply
(Service Mode)
Toner is properly supplied when
toner supply is run.
NO
Go to next step.
17
Image Process
Adjustment
o
Gradation Adjust
(Service Mode)
“Conv. Value” falls within the speci-
fied range as checked through gra-
dation adjust.
Dark: 0 ± 100
Highlight: 0 ± 60
YES
Go to step 20.
18
Image Process
Adjustment
o
D Max Density
(Service Mode)
The problem has been eliminated
through the adjust of D Max.
NO
Go to next step.
19
Image Process
Adjustment
o
Image Stabiliza-
tion
o
Init
Image Stabilization
(Service Mode)
After the Init Image Stabiliza-
tion sequence has been completed,
run gradation adjust.
NO
Go to next step.
20
The problem has been eliminated
through the checks of steps up to 19.
NO
Change imaging unit.
o
Change printer control
board
o
Change PH unit.
o
Change high voltage unit.
Step
Section
Check item
Result
Action
d
-Color
M
F
201
Y109660-1 Sevice Manual
