2L6/2N6/2N5/2N4
1-4-221
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
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.
2
DP_CIS glass
Check whether the CIS glass is
contaminated.
If the CIS glass is contaminated, clean the CIS
glass and conveying guide. If it has a scuff,
replace.
3
White streaks com-
pensation settings
Check the white streaks com-
pensation settings.
If the white streaks compensation is
insufficient, perform maintenance mode U091.
4
DP_CIS unit
Check the location the CIS unit
is mounted.
Re-mount the CIS unit if it is hanged off.
5
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.
6
DP_CIS
CIS is defective.
Replace the CIS and perform U091 and U411.
(see page 1-3-71,1-3-173)
7
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
Check whether the original
document is dirty.
If the original document is dirty, replace.
2
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.
3
Mirror
Check whether the mirrors are
dirty.
If the mirrors are dirty, clean the three mirrors.
4
Lamp unit
Check that the lamp unit is con-
taminated with dusts.
If dusts are observed on the lamp unit, remove
the dusts in the light paths.
5
Lamp unit
Check whether the LED cover is
hanged off.
Re-mount the LED cover if it is hanged off.
6
ISU
Check whether the lens cover is
hanged off.
Re-mount the lens cover if it is hanged off.
7
Shading plate
Check whether the shading plate
is dirty.
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 1-3-55)
8
ISC PWB
The ISC PWB is defective.
Replace the ISC and perform U411.
(see page 1-3-173)
Содержание TASKalfa 3051ci
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