05/2014
3-35
DC SC2020
Image Quality Troubleshooting
3.2.2 How to use the image quality troubleshooting (IPS)
Version 1.1
23 Lines on Coated Paper Exit When heavyweight gloss paper A3SEF is discharged to
EXIT1 in Duplex mode, Side1 surface may scratch the
EXIT GATE and create a line.
High temper-
ature/High
humidity
environment
Side1
(DUP)
A3 Heavy-
weight Gloss
Paper
Occurs on
Side1 surface
during
DUPLEX
delivery
Performance limit
24 Multi Color Transfer Failure Transfer From the electricity resistance increase due to decrease
in moisture content after fixing Side1 or resistance
increase of secondary transfer in low temperature or
passing of time, the necessary voltage cannot be
acquired in low humidity environment especially first
thing in the morning which may result in light shade of
multicolor.
This setting controls the MWS within the limit.
Low humidity
environment
Paper with
poor smooth-
ness
•First
thing in
the
morn-
ing of
low tem-
pera-
ture/low
humid-
ity envi-
ronment
• If the
inside of
the
machine
gets
heated
up, the
phe-
nome-
non will
ease or
not
occur.
•Perfor-
mance
limit
Trade off with MWS
Secondary transfer voltage off-set adjustment:
Optimize secondary transfer voltage with Mainte-
nance -> Adjust 2nd BTR (Set to Plus side).
25 Color Streaks Transfer Paper powder gets in between the center transfer belt
and CLN blade which may result in poor cleaning.
All Paper that
easily omit
paper dust or
paper with for-
eign sub-
stance
contamination
Change the reverse interval of the belt
[Make the number of NVM746-036 (default is 7000)
smaller]
26 Damage in the paper leading
edge with heavyweight A4SEF,
8.5"x11"SEF, B5SEF feed
PH Damage in the paper leading edge with heavyweight
A4SEF, 8.5"x11"SEF, B5SEF feed may occur.
All Side-1
Side-2
Heavyweight1,
Heavyweight2
Change the feed direction from SEF feed to LEF
feed.
Table 1
Image Quality Problem Name SUB Details
Occurrence Condition
Interim Measures Details
Environmen
t
Side-1
Side-2 Media
Others
Conditions
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