Kyocera TASKalfa 7002i Service Manual page 905

(3-16) The entire image is too light
Step Check description
1 Checking the settings
2 Checking the settings
3 Checking the settings
4 Checking the settings
5 Checking the settings
6 Checking the shading
plate
7 Executing U411
8 Checking the FFC
9 Checking the ISU
10 Checking the ISU
11 Replacing the engine PWB The engine PWB is faulty.
12 Replacing the main PWB
Assumed cause
The density is not properly
adjusted. (The original
type and image quality dif-
fers.)
The density is not properly
adjusted. ([EcoPrint] is set
to "On".)
The density is not properly
adjusted. (The density set-
ting is too light.)
The density is not properly
adjusted. ([Background
density] is set to "Off".)
[Prevent Bleed-thru] set-
ting is [On]
The shading plate is dirty.
The image is not adjusted. Execute U411 [Table(Chart
The FFC is not properly
connected, or it is faulty.
The ISU is attached
improperly.
The CCD PWB is faulty.
The main PWB is faulty.
7-45
Measures
Set the image quality accord-
ing to the originals.
Change to [Off] at [System
Menu/Counter] > [Common
Setting] > [Function Defaults]
> [EcoPrint].
Set the density setting to be
dark.
Set [Manual] in the Back-
ground Density Adjustment to
make dark.
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.
A)].
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
Reattach the ISU.
Replace the ISU.
Replace the engine PWB.
Replace the main PWB.
2WA/2NJ/2RK
Reference
Executing
U411
Wiring dia-
gram
Detaching
and Reat-
taching the
ISU
Detaching
and Reat-
taching the
ISU
Detaching
and Reat-
taching the
engine
PWB
Detaching
and Reat-
taching the
main PWB