Samsung FACSIMILE SF40 Service Manual page 30

2. CIS(Contact Image Sensor)
pin1 : Input signal
pin 2,5 : Analog ground
pin3 : Analog VDD(+5V)
pin4d :VSS(-—12V)
piné : Start signal
pin 7 : Ground
pin8 : Clock
pin9 :GLED (LED control)
pin 10 : VLED (+5V)
Block diagram and timing chart of CIS are Fig. 6 , Fig. 7, respectively
VLED(+5V)
\ V LED ARRAY V
GLED fies
VDD(+5V) Sem
a NOTE | ROD LENS ARRAY
GND o_o
VSS(-12V)
Sl
CLK
SIG oe
4 318 or equivalent
250KHz (L : duty 75%)
a (nen nner nett er ere eee woh
1727
UT a Tell HEU, WM see taeeny oO LUE Ghee no cas [_
10 msec
1 LINE
1728
[Fig. 7]
When GLED is high LEDs turn off and when GLED is low LEDs turn on.
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