Black Streaks Appear Longitudinally - Kyocera TASKalfa 1800 Service Manual

(6) Black streaks appear longitudinally.

Print example
1. Table scanning
Defective part
Original document
1
Original document
2
Contact glass assy Check the location the contact
3
Adjustment of the
scanner
4
Contact glass
5
CIS
6
Shading plate
7
CIS
8
Main/Engine PWB
9
2. DP-scanning
Defective part
Original document
1
Check description
Check whether the original
document is dirty.
Check if the size of the original
document and its reference size
match.
glass is mounted.
Check whether the outer areas
of the original document have
streaks or lines.
Check whether the outer areas
of the original document have
streaks or lines.
Check that the CIS is contami-
nated with dusts.
Check whether the shading plate
is dirty.
The CIS is defective.
The main/engine PWB is defec-
tive.
Check description
Check whether the original
document is dirty.
If the original document is dirty, replace.
If the size of the original document and its
reference size do not match, set the correct
document size or activate border erasure.
Re-mount the contact glass if it is hanged off.
1. Perform maintenance mode U067,
Front.(see page 1-3-34)
2. Perform maintenance mode U411, table
(Chart1)_Input.
(see page 1-3-75)
If the contact glass is dirty, clean.
If dusts are observed on the CIS, remove the
dusts in the light paths.
If the shading plate is dirty, perform
maintenance mode U063 to modify the
shading position. If it does not cure, replace the
contact glass assembly.
(see page 1-3-30)
Replace the CIS and perform U411.
(see page 1-3-75)
Replace the main/engine PWB.(see page 2-2-
11)
If the original document is dirty, replace.
1-4-47
2NC/2NF/2NG/2NN/3P7/3P8/3P9
Corrective Action
Corrective Action