Canon imageCLASS MF4140 Basic Manual page 109

NOTE
Do not dampen the cloth too much, as this
may tear the document or damage the
machine.
4
Close the ADF cover.
CAUTION
Be careful not to get your fingers caught.
5
Open the ADF/plate glass cover.
10-7
6
Clean the ADF scanning area (on
the left side of the platen glass)
and the document feeding roller
with a cloth dampened with
water. Then wipe the area with a
soft, dry cloth.
7
Close the ADF/plate glass cover.
CAUTION
Be careful not to get your fingers caught.
8
Reconnect the power cord and
turn on the main power switch.