Sony KV-34FQ75A, Service Manual

Page: 32 / 104

35
36
38
37
5-1.
BLOCK DIA
GRAMS (2)
TO A BOARD
CN18
0
1
B9 A9
CVBS OUT (TEXT) AUDIO RESET
AM
1
QSSI IN
CN89
0
2
A4V
CN81
0
1
(1
/2)
14
SDA
13
SCL
15
YS 3
27
R I
26
G I
25
B I
V-M (2)
1
CVBS/YI
48
CI
45
COMB SYS
23
Cr OUT
5
COMB Y
BUFFE
R
Q820
0
MONO IN (AM)
69
IF IN 2
67
IF IN1 POWER ON RESET
27
SPEAKER OUT R
25
SURROUND OUT
28
SPEAKER OUT L
30
SUBWOOFER OUT
60
XTAL IN SCL TV OUT L AV MAIN L IN XTAL OUT TV OUT R AV MAIN R IN
72 71 2 57 56 37 36
SDA
3
X
8
200
18.432M
H
z
BUFFE
R
Q820
1
HP MUTE SWITCH
Q8100, Q8101
6 7
8 1
L OUT R OUT
L IN R IN
SCL SDA
21 68
IF COMMON IN
IC82
0
0
SOUND PROCESSOR
7 1
CENTER OUT
LEFT IN CENTER IN
LEFT OUT
8
RIGHT IN
RIGHT
OUT
14
SUR. IN
SUR.
OUT
CENTER SPEAKER (1)
LEFT SPEAKER (3)
RIGHT SPEAKER (2)
SURROUND SPEAKER (4)
IC82
0
1
OUTPUT AMP
5 3
10 12
24
CENTER OUT
IC81
0
1
HP OUT
J
8
901
VARIABLE OUT
L R
AM
1
QSS1 AUDI
O
RESET
TO A BOARD
CN18
0
1
CN81
0
1
(2
/2)
HEADPHONE L OUT HEADPHONE R OUT
J
(
)
INTERFA
C
E
,
AUDIO, CHROMA,
G COMB FILTER
MAIN L
MAIN R
RIGHT OUT (9)
LEFT OUT (11)
HP L
HP R
IC870
0
AUTOWID
E
6
AD IN
16
SDA
15
SCL
SDA SCL
B1
5
A1
5
A1
0
A1
4
AMP
Q881
8
B1
4
B6 A6
27
(L4) AV3-L
SDA SCL AV3 LEFT IN AV3 RIGHT IN
34
(R4) AV3-R
A7
AV3 C IN
51
(C2) AV3-C
A8
AV3 LUM IN
56
AV3-V(Y2)
A1
3
19 20
VIDEO OUT
VIDEO IN AV4 (3)
15 8 6 3 2 1
RIGHT OUT (9)
33
(R5) AV4-R
26
(L5) AV4-L
20
MODE 3
49
(C3) AV4-C
54
AV4-V(YB)
RIGHT IN (10) LEFT OUT (11) LEFT IN (12) MODE 4 (3) C IN AV4 (4)
CN89
0
1
AV2
19 20
VIDEO OUT (6)
VIDEO IN (9)
15 10 6 3 2 1
RIGHT OUT (5) RIGHT IN (6) LEFT OUT (7) LEFT IN (8) AV LINK C IN (5)
10
MODE (2)
CN89
0
0
AV1
19 20
VIDEO OUT (2)
VIDEO IN (3)
8 6 2 1 16 15
RED IN BLANKIN
G
RIGHT OUT (1) RIGHT IN (2) LEFT IN (4) MODE (1)
3
LEFT OUT (3)
11 7
BLUE IN GREEN IN
58
AV2-V(Y1)
9
AV2 OUT(CV01)
52
AV2-C(C1
)
19
MODE 2
28
(L3) AV2-L
35
(R3) AV2-R
41
(L02) AV2-L OUT
40
(R02) AV2-R OUT
60
AV1-V (CV IN 2)
18
MODE 1
29
(L2) AV1-L
25
LTV
36
(R2) AV1-R
32
RTV
IC85
0
0
DIGITAL COMB FILTER
11
AV4 C
3
Y OUT
13
C OUT
6
CLOCK IN
16
LUMINANCE OUT
15
CHROMA OUT
16
PN
R
15
NTPLI
AMP
Q830
2
AMP
Q830
0
47
(CO2)
SUB C OUT
45
(YO2)
SUB Y OUT
IC83
0
1
MAIN COLOR DECODER
SDA SCL
7
COMB C/ FORGED S
22
Cb OUT
21
Y OUT
39
MAIN L OUT
38
MAIN R OUT
24
HPR OUT 3
23
HPL OUT 3
AMP
Q831
0
AMP
Q830
9
AMP
Q830
8
4
AV4 Y
15
AV3 C
2
AV3 Y
IC88
0
2
SUB AUDIO/VIDEO SWITCH
MAIN L MAIN R HP
R
HPL
A2
U-M (1)
HEADPHONE RIGHT OUT SURROUND SPEAKER (4)
CENTRE SPEAKER (1)
LEFT SPEAKER (3)
RIGHT SPEAKER (2)
HEADPHONE RIGHT OUT
HEADPHONE LEFT OUT
HP MUTE
HEADPHONE LEFT OUT
Y-M (3)
A2
5
B2
5
B4 A4 A3 A2 A1 B1 A4 B4 A5
IC88
0
1
MAIN AUDIO/VIDEO SWITCH
AV LINK CVBS1 IN
AM 2
QSS 2
A1
1
B1
1
1 3
13
SW
AM IN FM SIF
IC81
5
0
FM DEMULATOR
3
2
SW
O
DA 4
IC81
5
1
I2C SWITCH
SDA
14
SCL
15
SDA
SCL
Y-S (7)
21
Y OUT
22
U OUT
23
V OUT
AMP
Q840
3
AMP
Q840
5
AMP
Q840
6
A2
1
U-S (8) V-S (9)
A2
0
B1
9
IC84
0
1
SUB COLOR DECODER
48
CI
1
CVBS/YI
11
MAIN Y OUT
13
MAIN C OUT
46
SFC OUT
3
CVBS OUT
CN18
0
1
B1
3
A1
5
B1
5
B1
8
Q
SS2
O
U
T
H
E
AD
PH
O
N
E R
IG
H
T IN
H
E
AD
PH
O
N
E L
E
FT
IN
A
V
3
CHROM
A
OUT
A
V
3
L
U
M
INANCE
OUT
AM 2 OUT CVBS 2 OUT AUDIO LEFT A
UDI
O S
URROUND
A
UDI
O CE
NT
E
R
A
UDI
O RI
GHT
H
E
AD
PH
O
N
E M
U
TE
A
V
3
RI
GHT
OUT
AV3 LEFT OUT AV L
IN
K
I/O
M
O
DE (PI
N B)
C
V
BS IN
(TEXT)
AU
D
IO
R
ESET
H PULSE SUB IN
A1
9
B1
9
V PULSE SUB IN V SUB IN
A2
0
U
SU
B IN
B2
2
H PULSE MAIN IN
A2
1
Y SUB IN
A2
3
A2
4
V PULSE MAIN IN
V MAIN IN
A2
5
U MAIN IN
B2
5
Y MAIN IN
B4
MODE (PIN 8)
B5
AV L
IN
K
I/O
B9 B8
C
VBS IN
(TEXT)
AU
D
IO
R
ESET
B1
1
TEXT BLANKING IN
B1
2
BLUE TEXT IN
B1
4
R
E
D
TEXT
IN
B1
3
G
R
EEN
TEXT
IN
B1
7
V SYNC TEXT
B1
8
H S
Y
NC
T
E
X
T
A1
2
STAND
B
Y
A1
3
PROTECT
IO
N
A1
4
AC
O
N
/O
FF
B2
0
AU
D
IO
M
U
TE
B3
A
G
C M
O
NI
T
O
R
4 5
11 14 15 16
SCL SDA A
G
C M
O
NI
T
O
R
SDA SCL AG
C
MONIT
O
R
AM
1
QSS1
CVBS1
BUFF
E
R
Q1328
,
Q132
9
BUFF
E
R
Q1326
,
Q132
7
MUTE
S
W
Q120
1
A3 A2 B1 A5 A4 B4 A6 B6 A7 A8 A1
3
A1
1
B1
1
A1
2
A1
9
10
1 1
A2
4
A2
5
A1
5
A1
6
A1
7
A1
8
A1
9
A2
1
A2
2
A2
3
A2 A3 A4 A5 B1
9
A2
0
B2
0
A7 A8 B8 B7
B1
8
5
17 18 10 19 14
6
16
9
13
7
15
T
O
E
BO
ARD
C
N
4
101
T
O
B3
BO
ARD
C
N
502
V MAIN OUT U M
A
IN
OUT
Y MAIN OUT
Y SU
B
O
U
T
U S
U
B
OUT
V SU
B
O
U
T
VP SU
B O
U
T
HP
S
U
B
OUT
H
PU
L
SE
M
A
IN
O
U
T
DP
IC
S
W
V-1
0
0
IN
Y
-1
00 IN
U
-100 IN
V-100 OUT Y-100 OUT U-100 OUT DP
IC
S
W
B5
A4
A5
A2 B2 A3 B3
B1
A1
1
B1
1
A1 A6 A1
0
B1
0
9 11 1
3
5 7
T
O
H5
BO
ARD
CN71
0
3
T
O
D BO
ARD
CN61
0
2
T
O
J
BO
ARD
CN81
0
1
T
O
M
1
BO
ARD
CN91
0
1
5 9 11 13
T
O
D BO
ARD
CN61
0
1
STAND
B
Y
AC
O
N
/O
FF
O
VER
VO
L
T
AG
E
OV
E
R
CURRE
N
T
P
R
OT
IC1
4
0
0
I/O EXPANDER
AUDIO
PROTECTI
O
N
Q
1
2
2
6
,1
227,
162
6
8 6
1
MUTE
S
W
Q120
8
13 11
3
A
UDI
O CE
NT
E
R
A
UDI
O S
URROUND
A
UDI
O L
E
F
T
A
UDI
O RI
GHT
HE
A
D
P
H
ONE
RI
GHT
OUT
A
V
3
CHROM
A
I
N
H
EAD
PH
O
N
E L
E
FT
O
U
T
AV3 LUMINANCE IN AV3 LEFT OUT A
V
3
RI
GHT
OUT
HORI
Z
O
NT
A
L
DE
F
L
RE
D T
E
X
T
OUT
VERTICAL DEFL
G
R
EEN
TEXT
O
U
T
TEXT BL
AN
KIN
G
O
U
T
BLUE TEXT OUT
EXTR
A
PAR
ABO
L
A
FLYBACK PULSE HORI
Z
O
NT
A
L
DRI
V
E
DY
NA
M
IC F
O
CUS
EAST/WEST VERTICAL SAW+ VER
TIC
AL
PR
O
T
EC
T
VERTICAL SAW- R
G
B AFC
X-R
A
Y
ABL VM
M
O
D
U
L
ATIO
N
INST+
OU
T
S
INC+ MUTE MUTE
OU
T
C
SURR
O
U
N
D
CENT
E
R
IC1
1
2
6
AUDI
O
AM
PL
IF
IE
R
LE
F
T
IC1
1
7
6
AUDI
O
AM
PL
IF
IE
R
CENT
ER AND
SURROU
N
D
IC1
1
2
6
AUDI
O
AM
PL
IF
IE
R
RIG
H
T
CN12
0
0
CN14
0
1
CN17
0
3
CN16
0
1
CN16
0
2
CN19
0
1
T
U
1326
INPU
T
OUTP
U
T
STBY/MUTE STBY/MUTE
OUTP
U
T
INPU
T
10
9
STAND
B
Y
4
1
2
IC1
6
0
1
+5VRE
G
+6.
5
V
+5
V
ANALOG
U
E
4
1
2
IC1
6
0
2
+5VRE
G
+5
V
DIGITAL
4
1
2
IC1
6
0
5
+3.5V
R
E
G
+4.
5
V
+3.
5
V
4
1
2
IC
1
604
+9VRE
G
+1
0
.5
+9
V
A4 A5
5 4
T
O
H6
BO
ARD
CN71
0
0
CN17
0
0
LED SIRC
S
A1
0
B9 A9
CVBS 1 OUT AM
1
QSS 1 OUT
16
CVBS2
15
QSS2
14
AM
2
5
SDA
4
SCL
BUFF
E
R
Q1328
,
Q132
9
T
U
1350
(SUB-TUN
E
R
)
R
ESPO
N
SE L
E
D
SIRC
S
B2 B5
A1
0
B1
0
B1
1
B1
2
A1
2
A4 A7 B7
U S
U
B
OUT
Y SU
B
O
U
T
Y
M
A
IN
OUT
OUT
H
P
SU
B
IN
VP SUB IN V SUB IN U
SU
B IN
Y SUB IN
Y MAIN IN U MAIN IN
CN13
0
1
T
O
BK
BO
ARD
C
N
301
V PULSE MAIN OUT
B1
V MAIN IN
B8
V SU
B
O
U
T
A9
H
P
SU
B O
U
T
B9
VP SU
B O
U
T
B1
8
PORT 2
4
MID HP
PORT 2
TEXT HP
2 1
IC1
4
0
1
4
MID VP
PORT 2
TEXT VP
2 1
1
10
OV
P
R
OT
A
UDI
O P
R
OT
OC P
R
OT
9
3
PORT 2
A
(
)
SI
G
N
AL
AND
AUDI
O
AM
P
4 1 1 3
3 1 A3 A2
CN17
0
2
T
O
H5
BO
ARD
C
N
7
102