Samsung SCX-82x0 series Service Manual page 70

3) HR(Half Rate)-Module
HR-Module mainly consists of the mirror-2, mirror-3, etc. The reflected light on document is passed from
the mirror-1 through the mirrors-2 and -3 to the lens. HR module is driven by the same scan motor as that
of the FR module.
The speed and distance are half that of the FR module
4. Lens unit
The light reflected from the mirror-3 is led to the CCD placed at the focal point of the lens which is fixed
in a position.
4) Lens
The light reflected from the mirror-3 is focused to the CCD.
5) CCD board
Processes such as signal amplification, signal integration, and A/D conversion are applied on the lectrical
signal which was converted by the CCD.
6) Auto Paper Sensor
The size of an original placed on the glass is instantly detected using the Auto Paper Sensor fixed on the
Align-frame.
7) Pulley-Driving
The Steel Wire is coiled to this part and rotated by the scan motor. This also transfers the power to move
the FR/HR module.
Service Manual
2. Product Description
2-52
SAMSUNG ELECTRONICS