Image Is Too Light - Kyocera TASKalfa 6501i Service Manual

(3) Image is too light.

Print example
1. Table scanning
Defective part
The settings of the
adjustment of den-
sity
1
Settings of anti-off-
2
set
Adjustment of the
scanner
3
Contact glass
4
Home position
5
sensor
FFC cable CCD
6
FFC cable LED
7
Lamp unit
8
LED PWB
9
ISC PWB
10
CCD PWB
11
Check description
Check the settings of the adjust-
ment of density.
Check the settings of anti-offset. If anti-offset is set to on, set it to off.
Check the automatic adjustment
of the scanner.
Check whether the contact glass
is dirty.
Check the location the home
position sensor is mounted.
Check the FFC cable between
the CCD sensor and ISC PWB is
properly connected. Or, verify
conduction of the wire.
Check the FFC cable between
the LED PWB and ISC PWB is
properly connected. Or, verify
conduction of the wire.
Check the location the lamp unit
is mounted.
Check that the LED is lit.
The ISC PWB is defective.
The CCD PWB is defective.
1. Deactivate EcoPrint if it is activated. Or, if
the density is too low, chosse an image
quality that suits the original docuemt in
type.
2. Increase density.
3. Perform the background color adjustment
using the system menu.
Perform maintenance mode U411,
table(Chart1)_All.
(see page 1-3-152)
If the contact glass is dirty, clean the contact
glass, and the bottom part of the shading plate.
Re-mount the home position sensor if it is
hanged off.
Reinsert the connector if its connection is
loose. Or, if conduction is lot, replace the wire.
Reinsert the connector if its connection is
loose. Or, if conduction is lot, replace the wire.
Re-mount the lamp unit if it is hanged off.
If the LED is not lit, replace the LED PWB and
perform U411.
Replace the ISC PWB and perform U411.
(see page 1-3-152)
Replace the ISU and perform U411.
(see page 1-3-152)
1-4-167
Corrective Action
2N8/2N7