Kyocera TASKalfa 7002i Service Manual page 888

Step Check description
8 Checking the settings
9 Checking the shading
plate
10 Executing U411
11 Checking the FFC
12 Checking the ISU
13 Checking the engine PWB
14 Checking the main PWB
Assumed cause
[Prevent Bleed-thru] set-
ting is [On]
The shading plate is dirty.
The scanner image is not
adjusted.
The FFC is not properly
connected, or it is faulty.
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 connectors on the
main PWB are not properly
connected, or the wires or
the main PWB are faulty.
7-28
Measures
Change to [Off] at [System
Menu/Counter] > [Common
Setting] > [Function Defaults]
> [Prevent Bleed-thru].
Clean the shading plate at
the backside of the contact
glass.
Execute U411 [DP
FD(ChartA)] and [DP
FU(ChartA)].
Reconnect the following FFC.
When the FFC terminals are
peeled off or deformed or the
FFC is broken, replace the
FFC. • CCD PWB - Engine
PWB
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.
Reconnect the connectors on
the main 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, replace the main
PWB.
2WA/2NJ/2RK
Reference
Executing
U411
Wiring dia-
gram
Detaching
and Reat-
taching the
ISU
Detaching
and Reat-
taching the
engine
PWB
Detaching
and Reat-
taching the
main PWB