Faq (Problems Specific To The Mp800 And Corrective Actions) - Canon MP800 - PIXMA Color Inkjet Service Manual

5. FAQ (Problems Specific to the MP800 and Corrective Actions)

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