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24 February, 1999
SCANNER UNIT
2.4.8 OTHERS
[A]
[B]
[C]
A259D004.WMF
Anti-condensation Heater
There is an anti-condensation heater [A] on the left side of the optical base plate. It
turns on when the main switch is off (if the machine is plugged into the wall outlet),
to prevent moisture from forming on the optics.
Fans
Optics Cooling Fan
The optics cooling fan [B] is on the left side of the optics cavity. The fan sends air
into the optics cavity to prevent the exposure lamp and optics cavity from
overheating during copy cycles. This fan is on only when the exposure lamp is on.
Optics Exhaust Fan
The optics exhaust fan [C] is on the right rear side of the optics cavity. This fan
moves air out of the optics cavity to keep it from overheating. This fan is always on
when the main switch is on. During the ready condition, the rotation of the fan
drops to 2/3 of the full speed.
2-31
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