2L6/2N6/2N5/2N4
1-4-218
3. DP-scanning second (back) page (with a dual scan DP installed)
4. DP-scanning second (back) page (with a reversed DP installed)
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 CIS unit is mounted.
2
Adjustment of the
scanner
Check the automatic adjustment
of the scanner.
Perform maintenance mode U411, DP
FaceDown(Chart1)_All.
(see page 1-3-173)
3
White-reference
roller(Counter the
CIS)
Check that the white-reference
roller is smoothly operative.
If the white-reference roller does not rotate
smoothly, re-install.
4
White-reference
roller(Counter the
CIS)
Check if the white reference
roller is contaminated on its sur-
face or damaged.
If the white-reference roller is dirty, clean. Or, if
the roller is damaged, replace.
5
DP_CIS unit
Check the location the CIS unit
is mounted.
Re-mount the CIS unit if it is hanged off.
6
DP_SHD PWB
Check the CIS and the SHD
PWB is properly connected.
Reinsert the connector if the PWB was loosely
inserted.If not cured, replace the PWB.
7
DP_CIS
CIS is defective.
Replace the CIS and perform U091 and U411.
(see page 1-3-71,1-3-173)
8
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)_Input. (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.
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 ...
