Canon iP4300 Simplified Service Manual page 53

(9-1. FAQ cont'd)
No. Rank Function Phenomenon
4 B Print Soiling on paper in
results automatic duplex printing
(lines or streaks
perpendicular to the paper
feed direction)
5 C Print Scratches on paper
results
Condition
- Automatic duplex printing (Photo On the rib(s) inside the sheet feed unit
Paper Plus Double Sided, used for duplex printing, ink mist may
postcards, plain paper) accumulate, smearing paper.
- PP-101D, PP-101, PR-101, Scratches on the PF return lever due to
SG-101, etc. paper feeding from the cassette, and
- Paper feeding from the cassette duplex printing path.
- PP-101D, PP-101, PR-101, When multiple sheets of paper are set,
SG-101, etc. the back side of paper being picked up
- Paper feeding from the ASF scratches the front side of paper
- Multiple number of sheets loaded beneath (especially where the paper
feed rollers contact when picking up the
paper).
Cause
Temporary operational
solution:
Cancel automatic duplex printing,
and manually print each side of
paper.
Cleaning by user:
1. Perform Bottom plate cleaning
(from the printer driver) 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.
If the phenomenon persists after
conducting 1 and 2, servicing is
required.
Service:
Wipe any soiling or dirt off from
the sheet feed unit and the bottom
case unit ribs
- Change the paper feeding
method from the cassette to the
auto sheet feeder.
- If automatic duplex printing is
performed, cancel it, and, by
setting only a single sheet of
paper in the auto sheet feeder,
manually print each side of
paper.
Set only a single sheet of paper in
the auto sheet feeder.
28
Corrective action Possible call or complaint
- Paper gets smeared.
- The back side of paper
gets smeared.
- Even after Bottom plate
cleaning was performed,
and the platen ribs were
cleaned with cotton swab,
paper gets smeared.
*2
.
- Paper is scratched.
- Marks appear on printed
paper.