Canon iP4000 - PIXMA Photo Printer, Service Manual

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*2: Locations to clean in servicing when soiling on paper in automatic duplex printing persists:
* Occurrence level:
A: The symptom is likely to occur frequently. (Caution required)
B: The symptom may occur under certain conditions, but likeliness is assumed very low in practical usage.
C: The symptom is unlikely to be recognized by the user, and no practical issues are assumed.
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7 B Print results
Cleaning by user:
1. Perform Bottom plate cleaning (from the printer
driver) up to 3 times
*1
.
*1 : Change the paper in each Bottom plate
cleaning. The cleaning can end when paper
does not get any soiling.
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
*2 .
cleaning was performed, and the
platen ribs were cleaned with
cotton swab, paper gets
smeared.
8 C Print results
Scratches on paper - PP-101D, PP-101, PR-101, SG-101, etc.
- Paper feeding from the cassette
- Multiple number of sheets loaded
- Paper is scratched.
- Marks appear on printed paper.
- 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.
Scratches on the PF return lever
due to paper feeding from the
cassette, and duplex printing
path.
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