Kyocera TASKalfa 6501i Service Manual page 536

2. DP-scanning first (front) page
Defective part
Original document
1
Original document
2
Scanning position
of the DP
3
Adjustment of the
scanner
4
Slit glass, Contact
glass
5
Mirror
6
Lamp unit
7
CCD sensor
8
Shading plate
9
ISC PWB
10
CCD PWB
11
Main PWB
12
Check description
Check whether the original
document is dirty.
Check if the size of the original
document and its reference size
match.
Check whether the scanning
position of the DP is wrong.
Check whether the outer areas
of the original document have
streaks or lines.
Check whether the slit glass and
contact glass are dirty.
Check whether the mirrors are
dirty.
Check that the lamp unit is con-
taminated with dusts.
Check the dust on the CCD sen-
sor glass.
Check whether the shading plate
is dirty.
The ISC PWB is defective.
The CCD PWB is defective.
The main 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.
If the scanning position of the DP is shifted,
perform maintenance mode U068, DP Read.
(see page 1-3-55)
1. Perform maintenance mode U072, Front.
(see page 1-3-60)
2. Perform maintenance mode U411, DP
Auto Adj.
3. Perform maintenance mode U411, DP
FaceUp(Chart2)_Input.
(see page 1-3-152)
If the slit glass and contact glass are dirty,
clean the contact glass, the slit glass, the
bottom part of the shading plate, and the
conveying guide.
If the mirrors are dirty, clean the three mirrors.
If dusts are observed on the lamp unit, remove
the dusts in the light paths.
Check whether the CCD sensor glass is stuck
with dusts, and if necessary, remove the dusts
by an air blower.
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 1-3-50)
Replace the ISC PWB and perform U411.
(see page 1-3-152)
Replace the ISU and perform U411.
(see page 1-3-152)
Replace the main PWB.(see page 1-5-74)
1-4-176
Corrective Action
2N8/2N7