Fuji Xerox DocuCentre SC2020 Service Manual page 198

DC SC2020
Version 1.1
Image Quality Problem Name SUB
27 Multi Color Transfer Failure Transfer If continuous print is performed in high humidity environ-
28 Caterpillar Mark Transfer Caterpillar mark may appear with plain paper (thin
29 Transfer wrinkle PH
Transfer
30 Rear end shimmer (postcard) Transfer When printing transferred postcard, the postcard rear
31 Shimmer style Transfer Branch-like electric discharge print may appear on the K
32 Starvation Devel-
opment
33 Light-induced fatigue Xero
34 BCR pitch density unevenness Xero
35 Galling Ghost Xero
Details
ment, the resistance of secondary transfer part rises
temporary. The necessary electric field cannot be
acquired from the drop of transfer electrical current,
which may result in lighter shade in multicolor.
paper).
Transfer wrinkle may occur depending on the hydrated
status of the paper.
edge gets flipped-up after going through the Reg Shoot
and moves closer to the center transfer belt which may
result in blurring of line or letter image near the rear edge
of the postcard (Toner gets scattered).
color half-tone image part and line/solid part when
Duplex Print is performed.
• White may generate on the border of solid part and
half tone part but may worsen when TC is high
(Low humidity environment).
• TC may overshoot on the tall side and worsen
immediately after replacing the Toner Cartridge.
If left alone without shading the photo receptor, the den-
sity may change from the photo receptor cycle. -> This
will disappear if left alone.
BCR pitch density unevenness may occur depending on
the shape of BCR.
When continuous image is continuously printed in the
process direction like the Xero longitudinal rule line, the
image gets seared into the photo receptor and the
seared image gets detected when HT image is
extracted. -> This will disappear if left alone.
05/2014
3.2.2 How to use the image quality troubleshooting (IPS)
3-36
Table 1
Occurrence Condition
Environmen Side-1 Others
t Side-2 Media Conditions
High humidity
environment
ALL Side-1 Plain
Side-2 (Lightweight
Paper)
High humidity Side-1 Hydrated
environment Side-2 paper is a
stress.
Low humidity Side-1 Postcard
environment
Mid humid- Side-2 Plain
ity~HighHu- (Lightweight
midity Paper)
environment
Low humidity All All High TC
environment
All Side-1 All Immediately
Side-2 after Xero
ERU replace-
ment
Low temper- Side-1 All Detect with
ature/Low Side-2 HT image
humidity
environment
All Side-1 All Continuous
Side-2 print of same
image
Image Quality Troubleshooting
Interim Measures Details
Secondary transfer voltage off-set adjustment:
Optimize secondary transfer voltage with Mainte-
nance -> Adjust 2nd BTR (Set to Plus side).
Secondary transfer voltage off-set adjustment:
Optimize secondary transfer voltage with Mainte-
nance -> Adjust 2nd BTR (Set to Plus side).
Change to fresh paper and run.
• Down curl the rear edge of the postcard.
• Reg Shoot Extension Miler KIT
• Raise with secondary transfer voltage adjust-
ment.
• Raise the primary transfer electricity.
• Lower the TC (Toner density) in the develop-
ing machine.
• Replace the 2nd BTR Unit.
• Performance limit
• Flip vertically and output.
• Output with A4SEF -> A4LEF.
• Leave alone for overnight or replace Xero ERU
• Photo receptor replacement
Xero ERU Replacement
• Leave alone for 30 minutes or replace Xero
ERU
• Photo receptor replacement