Faq (Problems Specific To The Mp500 And Corrective Actions) - Canon PIXMA MP500 Service Manual

4. FAQ (Problems Specific to the MP500 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)
Condition
- Paper feeding from Due to its
the cassette, Photo mechanism,
Paper Plus Double contact of the PF
Sided, 5 x 7 size pinch rollers to the
5 x 7 size paper is
uneven, which is
likely to cause
skewed paper
feeding.
- Paper feeding from In the high
the ASF temperature and
high humidity
- Plain paper
environment, paper
- Highest print speed
becomes wavy; in
(Custom setting to
the low
5)
temperature and
low humidity
- In the high
temperature and environment, paper
high humidity curls significantly.
environment
When the
maximum amount
- In the low
of paper is set in
temperature and
the ASF, and if the
low humidity
paper-return tab
environment
fits in a wave or
- With the maximum
curl of the paper,
amount of paper
the tab slips and
set (13 mm)
does not catch
paper properly,
causing paper feed
problems.
- Paper feeding from Since coaxial
the ASF tolerance between
the pinch roller and
- Credit Card size
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.
- After continuous In borderless
borderless printing printing, printing is
of small sized performed to the
paper (such as 4 x size slightly larger
6), when a larger than the paper size,
sized paper (such and ink off the
as A4) is printed. paper is absorbed
2-8
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) up to 3
*1
times
2. If soiling on the
paper still
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.