2N8/2N7
1-4-177
3. DP-scanning second (back) page
Defective part Check description Corrective Action
1
Adjustment of the
scanner
Check if the outer areas of the
original document have streaks
or lines.
1. Perform maintenance mode U072, CIS.
(see page 1-3-60)
2. Perform maintenance mode U411, DP
Auto Adj.
3. Perform maintenance mode U411, DP
FaceDown(Chart1)_All.
(see page 1-3-152)
2
DP_CIS glass Check whether the CIS glass of
the DP is contaminated.
If the CIS glass of the DP is contaminated,
clean. Or, if it has scuffs, replace.
3
DP guide plate Check whether the DP guide
plate is dirty.
If the guide plate is dirty, clean the guide plate
and the conveying guide.
4
DP regist pulley The DP regist pulley is contami-
nated.
Clean the DP regist pulley.
5
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.
6
White streaks com-
pensation settings
Check the white streaks com-
pensation settings.
If the white streaks compensation is
insufficient, perform maintenance mode
U091.(see page 1-3-65)
7
DP_CIS unit Check the location the CIS unit
is mounted.
Re-mount the CIS unit if it is hanged off.
8
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.
9
DP_CIS CIS is defective. Replace the CIS and perform U091 and U411.
(see page 1-3-65,1-3-152)
10
Main PWB The main PWB is defective. Replace the main PWB.(see page 1-5-74)
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