Kyocera TASKalfa 7002i Service Manual page 900

(3-12) Partly dark or light image
Step Check description
1 Checking the settings
2 Checking the original
3 Checking the original
4 Checking the original mat
5 Checking the contact glass The contact glass is dirty.
6 Checking the contact glass The contact glass is not
7 Checking the contact glass Original is scanned on the
8 Checking the lens cover
9 Checking the lamp unit
assy (mirror frame A, B).
10 Replacing the lamp unit
11 Checking the scanner rails The lamp unit assy (mirror
12 Checking the LED reflector The LED reflector is not
13 Checking the lamp unit
assy (mirror frame A, B).
14 Checking the ISU
Assumed cause
Image quality is not prop-
erly adjusted. (Original
type and image quality are
mismatched.)
The original is dirty.
The originals are bent or
creased.
The original mat shifts.
properly attached.
bent contact glass.
The lens cover is off.
The mirror is dirty.
A part of LED does not
switch on.
frame A, B) does not oper-
ate properly since the for-
eign objects adhere on the
scanner rails or the grease
on there is not enough.
attached properly or
deformed.
The mirror is attached at
the incorrect position.
The CCD PWB is faulty.
7-40
Measures
Set [Original Image] in [Sys-
tem Menu/Counter] key >
[Common Settings] > [Func-
tion Defaults].
Replace the original.
Stretch the bending or the
paper creases of the original.
Reattach the original mat.
Clean the contact glass.
Reattach the contact glass.
Set the booklet original while
not bending the contact
glass.
Reattach the lens cover.
Clean the mirrors of the lamp
unit assy (mirror frame A, B).
Check if the LED lamp lights
by executing U061 [CCD]. If it
does not light, replace the
lamp unit and execute U411
[Table(ChartA)].
Remove the foreign objects
on the scanner rails, and
apply the grease (Part name:
PG-671 / Part number:
60170000) to there if neces-
sary.
Replace the lamp unit.
Reattach the lamp unit assy
(mirror frame A, B).
Replace the ISU.
2WA/2NJ/2RK
Reference
Detaching
and Reat-
taching the
lens unit
Detaching
and Reat-
taching the
lamp unit
Detaching
and Reat-
taching the
lamp unit
Detaching
and Reat-
taching the
ISU