Canon S820MG, Руководство по обслуживанию

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S900/S9000/S820 issues
Issue Model Cause Countermeasure Remarks
Repeating feed failure of all sizes of PC101
Occurs only in L/L environment. Extremely
low occurrence rate.
All There is insufficient contact between the feed
roller and the separation pad, and if self-cleaning
is not performed to remove paper dust on the
rubber of the roller, the friction coefficient is
lowered.
When feeding problems (including
repeating failure) occur, perform feed roller
cleaning 2 times.
(Note that excessive cleaning will wear out
the rollers)
Edge of the page contacts head
The leading or trailing edge of the paper
contacts the head and leaves black traces.
1) Occurs with borderless paper
Misaligned printing may affect postcards.
2) Occurs with non-borderless normal and
HG-201 paper
Problem occurs with HG-201 even when
the paper lever is set to envelope thickness.
Note that there is no problem printing
within the recommended print area of non-
borderless paper.
All (1) Due to the elimination of the paper depressor
of models to date in order to allow borderless
printing.
(2) Paper curling (especially HG-201 after
printing)
1) Paper which supports borderless
printing
* Have the user understand that there is
the possibility of ink stains at the leading
and trailing edges when borderless
printing.
* Flatten curled paper.
* Set the paper thickness lever to envelope
thickness.
Recommend non-borderless printing with
the recommended print area.
Have the user understand that although
borderless printing is possible with normal
paper, it is not recommended.
Inappropriate color hues at quality settings
of 1 (highest quality) and 2 (high quality)
Conspicuous with grey, barely noticable
with other colors. Problem papers are
GP301, HR101.
All Quality settings 2 (4 pass, uni-directional) and
1 (8 pass, bi-directional) use the same color
parameters.
As per specifications.
In the borderless printing durability test,
staining of the reverse side of the paper
occurred. The right side ribs cannot be
cleaned.
Occurs at a low level when more than 3000
sheets (1000 borderless postcards) but, at
an unacceptably high level when 6000
sheets (2000 borderless postcards) are fed.
This problem will only begin to affect the
average user (300 postcards per year) after
4 years or so, and so is not a major issue
All
Paper dust which absorbs ink particles
accumulates on the platen ribs and causes
staining. There are two causes:
(1) Significant paper dust accumulates from
factory sizing of Japanese postcards and KII201.
(2) Ink mist attaches easily to paper edges.
Cleaning method for after borderless
printing or the platen has been printed
(purge side of the platen):
1. Power the printer ON and open the
access cover.
2. With the head at replacement position,
remove the power cord.
3. Clean the purge-side platen ribs with Q-
tips etc.
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