Canon iP4300 Simplified Service Manual page 52

9. PRODUCT TECHNICAL INFORMATION
9-1. FAQ (Problems specific to the iP4300 and corrective actions)
No. Rank Function Phenomenon
1 C Paper Paper feeding problems
feeding - Jam
- Skewed paper feeding
2 C Print Skewed paper feeding (at
results the level of +/- 1%)
3 A Print Soiling on the back side of
results paper (lines or streaks
parallel to the paper feed
direction)
Condition
- Low temperature and low Due to curl of a round-trip postcard in
humidity environment the low temperature and low humidity
- Paper feeding from the cassette environment, the paper return tab of the
- Round-trip postcard U-turn path opposite to the home
position may not completely return to the
original position before the postcard is
picked up. In this way, the postcard is
skewed at the home position side,
resulting in skewed paper feeding or
jam.
- Paper feeding from the ASF Since coaxial tolerance between the
- Credit Card size 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.
- After continuous borderless In borderless printing, printing is
printing of small sized paper performed to the size slightly larger than
(such as 4 x 6), when a larger the paper size, and ink off the paper is
sized paper (such as A4) is absorbed by the platen's ink absorber.
printed. Absorbed ink may attach to the platen
- With Photo Paper Plus Double rib(s) after several dozen sheets are
Sided or postcards, the printed, causing soiling at the leading
phenomenon is likely to be edge of paper or on the back side of
noticeable and to be complained paper.
of by users, as printing is
performed on both sides of such
paper.
Cause
- Eliminate the curl of the
round-trip postcard.
- Set the round-trip postcard in the
ASF.
- Align the paper guide to the
paper edge tighter than usual.
1. Perform Bottom plate cleaning
(from the printer driver) 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.
27
Corrective action Possible call or complaint
- Paper jams.
- Paper feeds at an angle.
- Paper feeds at an angle.
- A margin appears on
printouts.
- Paper gets smeared.
- The back side of paper
*1
. gets smeared.