Kyocera TASKalfa 6501i Service Manual page 531

Defective part
Main PWB
12
2. DP-scanning first (front) page
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
Installing DP
6
FFC cable CCD
7
FFC cable LED
8
Lamp unit
9
LED PWB
10
ISC PWB
11
CCD PWB
12
Main PWB
13
Check description
The main PWB is defective.
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 whether the DP frame is
distorted or the hinges are dam-
aged.
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.
The main PWB is defective.
Replace the main PWB.(see page 1-5-74)
1. If the background density of the original
document is too dense, perform automatic
background adjustment.Or, adjust density
with background adjustment.
2. Adjust the location the DP is mounted.
Perform maintenance mode U411, DP
FaceDown(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 contact glass if it is hanged off.
Re-mount the Home position sensor if it is
hanged off.
Replace the DP.
Reinsert the connector if it its connection is
loose. Or, if conduction is lot, replace the wire.
Reinsert the connector if it 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)
Replace the main PWB.(see page 1-5-74)
1-4-171
Corrective Action
Corrective Action
2N8/2N7