Philips LX9000R/22, Service Manual

Page: 155 / 251

Circuit-, IC descriptions and list of abbreviations EN 155 LX9000R 9.
STMicroelectronics Confidential 6/25
STV6618 GENERAL OVERVIEW
Figure 3: STV6618 Block Diagram
Syn
c S
e
p
Bo
. C
la
m
p
Y/C
VBSI
N
_
T
U
N
Y
/C
VBSI
N
_
T
V
Y/
CVBS
IN
_A
UX
C
VBSI
N
_
EN
C
Bo
. C
la
m
p
G/
Y
IN
_
A
U
X
R/P
R
/CI
N_
A
U
X
B/
PB
IN
_A
UX
Syn
c S
e
p
Bo
. C
la
m
p
G/
YI
N
_
EN
C
R
/P
R
/C
IN
_E
NC
B/
PBI
N
_
EN
C
YIN
_E
NC
CI
N_
T
V
CIN
_E
N
C
mu
te
0 dB
Y/
C
VBSOU
T
_
R
E
C
Y/CV BSIN_ TU N
Y/CV BSIN_ TV
Y/CV BSIN_ AU X
CVBSI N_ ENC
YIN_ EN C
CIN_ TV
CIN_ EN C
G/YIN _E NC
G/Y IN _A UX
R/Pr/C IN_A UX
B/PbIN _A UX
R/Pr/C IN_ENC
B/PbIN _E NC
STV6618
Re
c
o
rd
er
mu
te
6 d
B
Y/
C
VBSOU
T_
TV
SC
AR
T
1
mu
te
6 d
B
Y/
C
VBSOU
T_
A
U
X
SC
AR
T
2
mu
te
6 dB
R/
P
r/
C
O
U
T_T
V
mu
te
6 dB
G/
Y
O
U
T
_
T
V
SC
AR
T
1
SC
AR
T
1
mu
te
6 d
B
B/
Pb
OU
T_TV
SC
AR
T
1
Y/CVBS_ TU N
Y/CVBS_ TV
Y/CVBS_ AU X
CVBS IN_ EN C
YIN_ EN C
CIN_T V
CIN_E NC
G/YIN _E NC
G/Y IN _A UX
R/Pr/C IN_A UX
B/PbIN _A UX
R/Pr/C IN_EN C
B/PbIN _E NC
FB
OUT
_
T
V
SC
L
FB
IN
_A
UX
0v
5v
SD
A
C_GATE
I²
C B
u
s
Bo
. C
la
m
p
Bo
. C
la
m
p
Bo
. C
la
m
p
Bo
. C
la
m
p
Av
. C
la
m
p
Av
. C
la
m
p
Bo
t/s
yn
c/a
v.
Bo
/Syn
c
Bo
t/
sy
n
c
Bo
t/s
yn
c/a
v.
CV
B
S
IN_
T
U
N
Y/
C
VBSI
N
_
T
V
Y/C
V
BSIN
_
A
U
X
C
VBSI
N
_
EN
C
YI
N
_
EN
C
mu
te
6 dB
C
O
UT
_A
UX
Y/
C
VBSI
N
_
A
U
X
C
VBSIN
_
E
N
C
YIN
_
E
N
C
CV
B
S
IN_
T
U
N
Y/
C
VBSI
N
_
T
V
C
VBSI
N
_
EN
C
YI
N
_
EN
C
CI
N
__T
V
CI
N_
E
N
C
CI
N_
E
N
C
R/P
r/C
IN_
A
U
X
R/
P
r/
C
IN
_E
N
C
G/
Y
IN
_
A
U
X
G
/YI
N
_
EN
C
B/Pb
IN
_
A
U
X
B/
P
b
IN
_
E
N
C
FB
IN
_
A
U
X
CI
N_
TUN
Av
. C
la
m
p
CIN _T UN CIN_T UN
CIN
__
T
U
N
DIGOUT1
DIGOUT2
DIGOUT3
DIGOUT4
DIGOUT5
DIGOUT6