Circuit Description Of Cis Unit - Sharp FO-CC500 Service Manual

[7] Circuit description of CIS unit

1. CIS
CIS is an image sensor which puts the original paper in close contact
with the full-size sensor for scanning, being a monochromatic type
with the pixel number of 1,728 dots and the main scanning density of
8 dots/mm.
It is composed of sensor, rod lens, LED light source, light-conductive
plate, control circuit and so on, and the reading line and focus are
previously adjusted as the unit.
Due to the full-size sensor, the focus distance is so short that the set
is changed from the light weight type to the compact type.
øT
CISCLK
VO
5ms
2µs
2. Waveforms
The following clock is supplied from SCE214V of the control board,
and VO is output.
Approx.3.3V
0V
0.8V~2.9V
(White original paper)
Fig. 21
5 – 25
FO-CC500A
FO-K01A