Lubrication Points; Scanner Section - Canon LASER CLASS 3175 Service Manual

LASER CLASS 3170/3175/3175MS Chapter 1: Safety and Precautions

2.3.2 Lubrication points

Do not touch the greased parts. If you do, the grease (applied for smooth
operation of the printer mechanism and to increase electrical conductivity) will
come off.
Use only specified grease.
If you use other grease, the grease may oxidize, and weaken plastic
parts.
If you accidentally touch a greased part and grease comes off, reapply
the grease, see the PARTS CATALOG (supplied separately) .
REFERENCE

2.3.3 Scanner section

a) Contact sensor
Handle the contact sensor carefully to avoid scratching or dirtying its scanning
surface. Scratches or dirt on the scanning surface can cause vertical stripes or
other defects to appear in the scanned image.
Also, if the contact sensor scanning section is exposed to external light for
prolonged periods, its characteristics deteriorate, resulting in blackish scanned
images. During servicing, do not expose the contact sensor scanning section to
external light for prolonged periods.
b) Auto document feeder (ADF) rollers
Handle the ADF section rollers to avoid scratching or dirtying them. If they
are scratched or dirtied, vertical stripes or other defects may occur in the
scanned image and the document may jam.
If the roller is dirtied, clean it with a soft, dry cloth.
c) Plastic film
Do not modify the plastic film (white sheet unit) which presses down the
document in the middle frame unit of the reader assembly.
Document jams may occur if it is modified.
d) Stamp Ink supply
Fill with one drop of stamp ink so that it does not overflow the edge of the
stamp. The operation of the stamp may be degraded if the ink overflows and
drips down.
e) Middle reader frame unit stopper
Do not force the middle reader frame unit open with the stopper removed. If
unnecessary strength is used, the hinge of middle reader frame unit will be
damaged.
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