Black Streaks Appear Longitudinally - Kyocera ECOSYS M3040dn 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
Mirror
6
Lamp unit
7
Shading plate
8
CCD sensor
9
CCD PWB
10
Control PWB
11
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 whether the mirrors are
dirty.
Check that the lamp unit is con-
taminated with dusts.
Check whether the shading plate
is dirty.
Check that the CCD sensor
glass is contaminated with dusts.
The CCD PWB is defective.
The control PWB is defective.
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 1-3-30)
2. Perform maintenance mode U411, table
(Chart1)_Input.
(see page 1-3-54)
If the contact glass is dirty, clean.
If the mirrors are dirty, clean the three mirrors.
If dusts are observed on the lamp unit, 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 1-5-16)
If dusts are observed on the CCD sensor
glass,remove the dusts by an air blower.
Replace the ISU and perform U411.
(see page 1-3-54)
Replace the control PWB.(see page 2-2-12)
1-4-54
2NM/2NX/2NY/2NZ/2P0/2P6
Corrective Action