Polygon Motor - Ricoh B132 Service Manual

3.4.2 POLYGON MOTOR


WARNING
Turn off the main power switch and unplug the machine before performing
any procedure in this section. Laser beams can seriously damage the eyes.
Important!
• An accidental static discharge could damage the laser diode board attached to
the lens block unit.
• Touch a metal surface to discharge any static electricity from your hands.
• The polygon motor rotates at extremely high speed and continues to rotate after
you switch the machine off. To avoid damaging the motor, never remove the
polygon motor within three minutes of switching off the main power and
disconnecting the power plug.
[A]
[B]
Remove:
• Exposure glass (! 3.3.1)
• Lens block (! 3.3.2)
[A]: Top cover ( x2)
[B]: Middle cover ( x2)
[C]: Polygon motor ( x3,  x1,  x1)
Important!
• Do not attempt to remove the paint-lock screws on top of the lens block unit.
• Do not touch the glass covers of the laser ports on the sides of the polygon
motor [C]
SM
[C]
B132R131.WMF
3-35
LASER UNIT
B132/B200