Laser Unit; Caution Decals; Polygon Motor - Ricoh V-C3 D081 Field Service Manual

4. Replacement and Adjustments

Laser Unit

• This laser unit employs two laser beams produced by a Class III LD with a wavelength of 640 to 670
nm and intensity of 9 mW. Direct exposure to the eyes could cause permanent blindness.
• Before adjusting or replacing the laser unit, push the main power switch to power the machine off
then unplug the machine from the power source. Allow the machine to cool for a few minutes. The
polygon motor continues to rotate for approximately one to three minutes after the machine is switched
off.
• Never power on the machine with any of these components removed: 1) LD unit, 2) polygon motor
cover, 3) synchronization detector.
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Caution Decals

Polygon Motor

• Turn off the main power switch and unplug the machine before performing any procedure in this
section. Laser beams can seriously damage the eyes and cause permanent blindness.
• 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.
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