Olivetti d-Copia 163MF Service Manual page 122

(2) Optical module unit
The optical module unit consists of an exposure lamp, three mirrors, a lens, a CCD PWB, and so on. Also an inverter PWB
for driving the exposure lamp and a scanner home position sensor for detecting the home position of the optical module
unit are incorporated.
The original on the platen is exposed to the light of the exposure lamp that is reflected by the reflector. The image is input
through reflection by the three mirrors and through the lens to the CCD image sensor on the CCD PWB. The CCD image
sensor scans one row of the image in the main scan direction, converts it to electric signals, and outputs them to the main
PWB. Then the optical module unit is moved in the sub scan direction along the sliding rod, and the CCD image sensor
scans the next row of the image in the main scan direction. The operation described above is repeated for scanning the
overall image of the original. If a document processor (DP) is used, the optical module unit stops at the position of the
platen and scans sequentially one row of the image on the original in synchronization with the moving timing of the original
in the sub scan direction by driving the DP.
Sliding rod
2-1-16
Figure 2-1-20 Optical module unit
(1) Exposure lamp
(2) Scanner motor
(3) Lens
(4) CCD PWB
(5) Scanner home position sensor
(6) Inverter PWB
(7) Mirror
(8) Mirror
(9) Mirror
Service Manual Y107330-8