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5. FAQ (Problems Specific to the MP800 and Corrective Actions)
No. * Function Phenomenon Condition Cause Corrective action
Possible call or
complaint
1 B
Print
results
Skewed paper
feeding
- Paper feeding from the
cassette, Photo Paper
Plus Double Sided, 5
x 7 size
Due to its
mechanism, contact
of the PF pinch
rollers to the 5 x 7
size paper is uneven,
which is likely to
cause skewed paper
feeding.
Change the paper
feeding method from
the cassette to the
auto sheet feeder.
- Paper feeds at
an angle.
- A margin
appears on
printouts.
2 B Paper feed
Improper paper
feeding:
- Multi-feeding
- Skewed paper
feeding
- Paper jam
- Paper feeding from the
ASF
- Plain paper
- Highest print speed
(Custom setting to 5)
- In the high temperature
and high humidity
environment
- In the low temperature
and low humidity
environment
- With the maximum
amount of paper set
(13 mm)
In the high
temperature and high
humidity
environment, paper
b
ecomes wavy; in the
low temperature and
low humidity
environment, paper
curls significantly.
When the maximum
amount of paper is
set in the ASF, and if
the paper-return tab
fits in a wave or curl
of the paper, the tab
slips and does not
catch paper properly,
causing paper feed
problems.
- Reduce the amount
of paper set in the
ASF to half
(approx. 5 mm
high).
- Multiple sheets
of paper feed at
the same time.
- Paper feeds at
an angle.
- A paper jam
occurs.
3 C
Print
results
Skewed paper
feeding (at the
level of +/- 1%)
- Paper feeding from the
ASF
- Credit Card size
Since coaxial
tolerance between the
pinch roller and the
LF roller, which
determines the paper
feed alignment, is
0.2mm, skewed
paper feeding can
occur. However,
according to the field
data of current
models, the skewness
level caused by the
coaxial tolerance of
0.2mm is within the
criteria of +/- 1%,
thus the phenomenon
is left as is.
- Align the paper
guide to the paper
edge tighter than
usual.
- Paper feeds at
an angle.
- A margin
appears on
printouts.
4 A
Print
results
Soiling on the
back side of
paper (lines or
streaks parallel to
the paper feed
direction)
- After continuous
borderless printing of
small sized paper
(such as 4 x 6), when
a larger sized paper
(such as A4) is
printed.
- With Photo Paper Plus
Double Sided or
postcards, the
phenomenon is likely
to be noticeable and to
be complained of by
users, as printing is
performed on both
sides of such paper.
In borderless
printing, printing is
performed to the size
slightly larger than
the paper size, and
ink off the paper is
absorbed by the
platen's ink absorber.
Absorbed ink may
attach to the platen
rib(s) after several
dozen sheets are
printed, causing
soiling at the leading
edge of paper or on
the back side of
paper.
1. Perform Bottom
plate cleaning
(from the MP
driver or via the
operation panel)
up to 3 times
*1
.
2. If soiling on the
paper still
remains after 3
times of Bottom
plate cleaning,
wipe the platen
rib(s) and their
surroundings
with a cotton
swab.
- Paper gets
smeared.
- The back side of
paper gets
smeared.
Soiling on paper
in automatic
duplex printing
(lines or streaks
- Automatic duplex
printing (Photo Paper
Plus Double Sided,
postcards, plain paper)
On the rib(s) inside
the sheet feed unit
used for duplex
printing, ink mist
Temporary
operational
solution:
Cancel automatic
- Paper gets
smeared.
- The back side of
paper gets
2-9