Canon FAX-L1000 - Manual (Page 26)

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FAX-L1000 Chapter 1: Safety and Precautions
1.4 Moving and Rotating Parts
Precautions
To prevent accidents involving moving or rotating parts during servicing, that
disconnect the power cord before starting disassembly.
When you must service the fax with the power cord plugged in, you must not
wear bracelets, necklaces, neckties, or other objects. Also, take care to prevent
hair and other articles of clothing from becoming entangled.
The fax is provided with a protection function which stops moving and
rotating parts in the printer, when the printer cover is opened during operation.
However, if these sensors have to be moved when carrying out servicing with
the power cord plugged in, moving and rotating parts will operate even with
these covers open.
NOTE
Since this fax does not have a sensor to detect when the right cover or left
cover is removed, even if you open the front cover or rear cover while this fax
is operating, the gears and rollers continue to move.