Canon iR C6800 Series Portable Manual page 303

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MTR-ON Use it to start motor operation.
Operation
The operation varies from model to model.
1) Press [MTR-ON] to highlight; then, press the OK key to start motor
operation.
2) Press the OK key once again to stop the motor.
(The operation will stop automatically in 5 sec; however, the
indication will not change to [STOP] unless the OK key is pressed
once again.)
ROLL-CLN
Use it to clean the ADF roller.
In this mode item, the roller is rotated by the work of its motor; it is
cleaned by lint-free paper (moistened with alcohol) forced against it
while it rotates.
Operation
1) Press [ROLL-CLN] to highlight.
2) While the roller is rotating, clean it by forcing lint-free paper
(moistened with alcohol) against it.
3) Press [ROLL-CLN] to highlight, and press the OK key to stop the
rotation of the roller.
FEED-ON Use it to check the movement of paper in the ADF on its own.
Operation
1) Press [FEED-ON], and then press the OK key so that the ADF starts
to move paper according to the operation mode selected using [FEED-
CHK].
FEEDER>FUNCTION
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