Canon PIXMA MP170, Service Manual

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*1: When paper is not soiled, cleaning is complete. Change paper each time cleaning is performed.
*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.
11 C
Image
quality
Horizontal
lines or uneven
print density
due to LF roller
feeding at small
pitch As the print media
slightly slips while
being fed by the
LF roller, printed
areas overlap,
causing the
problem. - Perform print
head alignment.
- Change the print
quality from
Standard to High
mode.
- Lines or
uneven print
density (on
skin tones and
background)
- Cannot print
properly
12 C Installation
Print head
alignment error During automatic
print head alignment
using the alignment
sheet - All the applicable
boxes of the
alignment sheet
are not filled in.
- The alignment
sheet is not
placed on the
platen glass
properly.
- Press the OK
button to clear
the error.
- Then, start from
printing of the
print head
alignment sheet
again.
Note: Re-
scanning
without re-
printing
the
alignment
sheet does
not
function
properly.
- Print head
alignment
error
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