2L6/2N6/2N5/2N4
1-4-217
2. DP-scanning first (front) page
12
Main PWB
The main PWB is defective.
Replace the main PWB.(see page 1-5-72)
Defective part
Check description
Corrective Action
1
Original document
1. Check if the background
density of the original
document is too dense.
2. Check if the original
document is floated during
scanning.
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.
2
Adjustment of the
scanner
Check the automatic adjustment
of the scanner.
Perform maintenance mode U411, DP
FaceUp(Chart1)_All.
(see page 1-3-173)
3
Contact glass
Check whether the contact glass
is dirty.
If the contact glass is dirty, clean the contact
glass, and the bottom part of the shading plate.
4
Contact glass assy Check the location the contact
glass is mounted.
Re-mount the contact glass if it is hanged off.
5
Home position
sensor
Check the location the home
position sensor is mounted.
Re-mount the home position sensor if it is
hanged off.
6
Installing DP
Check whether the DP frame is
distorted or the hinges are dam-
aged.
If the DP is damgged, replace the DP.
7
FFC cable CCD
Check the FFC cable between
the CCD sensor and ISC PWB is
properly connected. Or, verify
conduction of the wire.
Reinsert the connector if its connection is
loose. Or, if conduction is lot, replace the wire.
8
FFC cable LED
Check the FFC cable between
the LED PWB and ISC PWB is
properly connected. Or, verify
conduction of the wire.
Reinsert the connector if its connection is
loose. Or, if conduction is lot, replace the wire.
9
Lamp unit
Check the location the lamp unit
is mounted.
Re-mount the lamp unit if it is hanged off.
10
LED PWB
Check that the LED is lit.
If the LED is not lit, replace the LED PWB and
perform U411.
11
ISC PWB
The ISC PWB is defective.
Replace the ISC PWB and perform U411.
(see page 1-3-173)
12
CCD PWB
The CCD PWB is defective.
Replace the ISU and perform U411.
(see page 1-3-173)
13
Main PWB
The main PWB is defective.
Replace the main PWB.(see page 1-5-72)
Defective part
Check description
Corrective Action
Summary of Contents for TASKalfa 3051ci
Page 5: ...2L6 2N6 2N5 2N4 1 4 4 Machine Option2 Figure 1 4 4 Paper jam location Matchine Option2 ...
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Page 257: ...2L6 2N6 2N5 2N4 5 1 4 256 16 Grainy image See page1 4 272 ...