Gestetner B070 Service Manual page 569

6.10.5 POLYGON MIRROR MOTOR
The polygon mirror reflects the laser beam onto the OPC drum to expose the
image line by line in the main scan direction. The polygon mirror motor rotates at a
constant speed, even while the copier is in standby mode, but shuts off when the
copier enters the energy conservation mode.
The polygon mirror motor has no brake mechanism, so it requires about 3 minutes
to stop rotating. Before moving the machine or before servicing the motor or the
area around the polygon mirror motor, you should switch off the copier main power
switch, disconnect the machine, and wait at least three minutes for the motor to
stop rotating.
NOTE: The polygon mirror motor requires about 10 seconds to reach full speed
after the machine awakes from the energy conservation mode, or after the
machine is switched from the normal mode to low speed mode for printing
on thick paper. The machine cannot print during this 10 second interval
until it reaches full rotation speed.
SM
CÓPIA NÃO CONTROLADA
6-53
CÓPIA NÃO CONTROLADA
LASER EXPOSURE
B070/B071