Olivetti d-Copia 6500MF Plus Service Manual page 500

3. DP-scanning second (back) page
Defective part
Original document
1
Adjustment of the
scanner
2
White-reference
roller (Counter the
3
CIS)
White-reference
roller (Counter the
4
CIS)
DP_CIS unit
5
DP_SHD PWB
6
DP_CIS
7
Main PWB
8
Service Manual
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 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. 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.
Perform maintenance mode U411, DP
FaceUp(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)
1-4-172
Corrective Action
2N8/2N7
Y116520-