Samsung SCC-B2300 Service Manual - Page 75
PREAMP / CDS & AGC System
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Circuit perating escription 13-1-3 PREAMP / CDS & AGC System 1) This VOUT Image signal is amplified at Q301 and DC blocked at C313,C314, then supplied to IC302-21,22. 2) Black noise elimination and clamping, and agc process is done to CCDOUT signal at IC302, and DRVOUT signal is supplied to MAIN Board. * For IC302 to be activated, PBLK, XRS, CLPOB, AGC, SHP, SHD, CLPDM signal and power should be supplied. These signals are supplied by MAIN Board. IC T cc I PI CLP M S SP cc CC LE EL A CC T A CCLP S S S CS CLP MS MS CS CLP PE SA E C T AC E C S IT S CAM S SET AC CLP T T LK S T ig. PS T cc .C. T SET P LK S CLP Samsung Electronics
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Circuit
perating
escription
Samsung Electronics
13-1-3 PREAMP / CDS & AGC System
1)
This VOUT Image signal is amplified at Q301 and DC blocked at C313,C314, then supplied to IC302-21,22.
2)
Black noise elimination and clamping, and agc process is done to CCDOUT signal at IC302, and DRVOUT
signal is supplied to MAIN Board.
*
For IC302 to be activated, PBLK, XRS, CLPOB, AGC, SHP, SHD, CLPDM signal and power should be
supplied. These signals are supplied by MAIN Board.
PS
T
cc
.C.
T
SET
P LK
S
CLP
IC
T
cc
I
PI
CLP M
S
SP
cc
CC LE EL
A CC
T
A CCLP
S
S
S
CS
CLP
MS
MS
CS
CLP
E
AC
C
SIT
CAM
S
SET
AC
CLP
T
T
T
LK S
P
E
SA EC
T
S
ig.