Scanning; Overview - Gestetner A294 Service Manual

2.2 SCANNING

2.2.1 OVERVIEW

[E]
The original is illuminated by the exposure lamp (a xenon lamp) [A]. The image is
reflected onto a CCD (Charge Coupled Device) [B] via the 1st, 2nd, and 3rd
mirrors, and through the lens [C].
The 1st scanner consists of the exposure lamp, the lamp regulator and the 1st
mirror.
There are two fans, optics cooling fan [D] and the SICU cooling fan on the right
side of the optics cavity to draw cool air inside. The hot air exits through the vents
in the upper cover. The optics cooling fan is turned on when the scanner motor
starts and it turns off 10 seconds after the scanner motor turns off. The SICU
cooling fan operates whenever the operation switch is on.
If the optional optics anti-condensation heater [E] is installed, it turns on while the
main switch is off, to prevent moisture from forming on the optics.
SM
CÓPIA NÃO CONTROLADA
[C] [A]
2-13
CÓPIA NÃO CONTROLADA
[B]
A294D001.WMF
SCANNING
[D]
A294/A295