Olivetti d-Copia 6500MF Plus Service Manual page 497

3. DP-scanning second (back) page
Defective part
The settings of the
adjustment of den-
sity
1
Settings of anti-off-
2
set
Adjustment of the
scanner
3
White-reference
roller (Counter the
4
CIS)
White-reference
roller (Counter the
5
CIS)
DP_CIS unit
6
DP_SHD PWB
7
DP_CIS
8
Main PWB
9
Y116520-3
Check description
Check the settings of the adjust-
ment of density.
Check the settings of anti-offset. If anti-offset is set to on, set it to off.
Check the automatic adjustment
of the scanner.
Check that the white-reference
roller is smoothly operative.
Check if the white reference
roller is contaminated on its sur-
face or damaged.
Check the location the CIS unit
is mounted.
Check the CIS and the SHD
PWB is properly connected.
CIS is defective.
The main PWB is defective.
1. Deactivate EcoPrint if it is activated. Or, if
the density is too low, chosse an image
quality that suits the original docuemt in
type.
2. Increase density.
3. Perform the background color adjustment
using the system menu.
Perform maintenance mode U411,
DP FaceDown(Chart1)_All
(see page 1-3-152)
If the white-reference roller does not rotate
smoothly, re-install.
If the white-reference roller is dirty, clean. Or, if
the roller is damaged, replace.
Re-mount the CIS unit if it is hanged off.
Reinsert the connector if the PWB was loosely
inserted.If not cured, replace the PWB.
Replace the CIS and perform U091 and U411.
(see page 1-3-65,1-3-152)
Replace the main PWB.(see page 1-5-74)
1-4-169
Corrective Action
Service Manual
2N8/2N7