The Background Is Colored - Kyocera TASKalfa 1800 Service Manual

(4) The background is colored.

Print example
1. Table scanning
Defective part
Original document
1
Adjustment of the
scanner
2
Contact glass
3
Contact glass assy Check the location the contact
4
Home position
5
sensor
FFC cable CIS
6
CIS assembly
7
CIS
8
Main/Engine PWB
9
Check description
1. Check if the background
density of the original
document is too dense.
2. Check if the original
document is floated during
scanning.
Check the automatic adjustment
of the scanner.
Check whether the contact glass
is dirty.
glass is mounted.
Check the location the home
position sensor is mounted.
Check the FFC cable between
the CIS and main/engine PWB is
properly connected. Or, verify
conduction of the wire.
Check the location the CIS
assembly is mounted.
The CIS is defective.
The main/engine PWB is defec-
tive.
1. If the background density of the original
document is too dense, perform automatic
background adjustment.Or, adjust density
with background adjustment.
2. If the original document is floated during
scanning, press down the original
document.
Perform maintenance mode U411,
table(Chart1)_All.
(see page 1-3-75)
If the contact glass is dirty, clean the contact
glass, and the bottom part of the shading plate.
Re-mount the contact glass if is hanged off.
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.
Re-mount the CIS assembly if it is hanged off.
Replace the CIS and perform U411.
(see page 1-3-75)
Replace the main/engine PWB.(see page 2-2-
11)
1-4-43
2NC/2NF/2NG/2NN/3P7/3P8/3P9
Corrective Action