Kyocera TASKalfa 7002i Service Manual page 902

(3-13) Blurred image
Step Check description
1 Checking the original
2 Checking the contact glass The contact glass has con-
3 Checking the lamp unit
assy (mirror frame A, B).
4 Checking the ISU
5 Checking the CCD PWB
6 Executing U411
7 Checking the ISU
8 Checking the engine PWB
9 Replacing the main PWB
Assumed cause
The original is wavy.
densation.
The mirror has condensa-
tion.
The lens has condensa-
tion.
The glass of the CCD
PWB has condensation.
Each auto adjustment of
the scanner is incorrect.
The CCD PWB is faulty.
The connectors or the
FFCs on the engine PWB
are not properly con-
nected. Or the wires, FFCs
or the engine PWB are
faulty.
The main PWB is faulty.
7-42
Measures
Make the originals flat, or
replace it if possible.
Remove the condensation on
the contact glass.
Remove the condensation on
the mirrors of the lamp unit
assy (mirror frame A, B).
Remove the condensation on
the ISU lens.
Remove the condensation on
the CCD PWB glass using a
blower brush
Execute U411 [Table(Chart
A)].
Replace the ISU.
Reconnect the connectors on
the engine PWB. Then, fix or
replace the wires if they are
pinched by the other part or if
they have any damage.
When the issue is not
resolved after that, replace
the engine PWB.
Replace the main PWB.
2WA/2NJ/2RK
Reference
Detaching
and Reat-
taching the
lamp unit
Detaching
and Reat-
taching the
lens unit
Detaching
and Reat-
taching the
lens unit
Executing
U411
Detaching
and Reat-
taching the
ISU
Detaching
and Reat-
taching the
engine
PWB
Detaching
and Reat-
taching the
main PWB