Read Sony KV-25FV12B Service Manual online
KV-25FV12B
SECTION 6
DIAGRAMS
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— 27 —
— 30 —
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6.1 BLOCK DIAGRAM
BA5-890-BD
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
7
8
1
2
1
3
2
4
6
1
2
3
1
2
3
1
3
4
7
8
9
10
1
2
3
4
5
6
7
8
9
1
2
3
4
V
L
R
S
1
2
3
4
5
6
7
8
9
1
2
3
4
1
2
3
4
5
7
8
9
10
11
12
14
15
16
17
13
18
1
2
4
3
1
2
3
4
5
6
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
CN1303
CN1002
CN2002
CN1004
CN2009
CN1003
CN705
CN1001
CN460
J201
CN406
CN450
D2001
CN601
CN501
T501
T504
J401
CN408
CN407
CN2001
CN506
CN1000
CN402
T503
R645
D605
D626
C636
CN901
RY602
D622
T604
PH600
RY601
T602
F601
VDR601
T603
T505
S-VIDEO
4P
2P
:MINI
HEADPHONE
3P
3P
10k
D4SB60L-F
AC RECT
RELAY
AC POWER
D4SB60L-F
AC RECT
SRT
:STAND BY
PHOTOCOUPLER
DGC RELAY
FBT
N/S COIL -
N/S COIL +
CN701
HV
RESET
IKIN
AFCFI
VIDEO
MAIN1
ST LED
I-STEREN
SAP LED
I-SAP
MODE
O-SAP
F MONO
O-MONO
GND
MAIN2
AFT OUT
AFT
RF AGC
AGC MUTE
9V
30V
5V
L OUT
R OUT
R OUT
MUTE
MUTE
VOL-CTRL
Q410
VOL-CTRL
Q411
MUTE
C
Y
TV-L
TV-R
TV-R
FRONT A/V
VIDEO
AUDIO
L
R
V2-L
V2-R
CLOCK
DATA
V1-R
V1-L
YUV-R
YUV-L
AUDIO
L
R
J205
GND
9V
OUT-R
IN3+
IN4+
OUT-L
IN2+
IN1+
OUT1+
STANDBY
OUT2-
SEL0
SEL1
GND
GND
V1
O-VOL
TV-L
TV-R
TV-R
V2-L
V2-R
V1-R
V1-L
YUV-R
YUV-L
GND
9V
OUT-R
OUT-L
OUT-B
OUT-A
LINE B
IN5A
LINE A
IN2
IN2A
IN1
IN1A
IN3A
IN3A
IN3
J202
1
3
4
5
6
8
9
STANDBY CIRCUIT
Q606
PROTECT
Q605
CONVERTER
SWITCH
Q608
STBY DRIVE
Q607
RELAY DRIVE
Q604
RELAY
DGC
DGC
DGC
DGC
DGC
D
VIN
S
OCP/FB
+B
FV
G2
ABL
H
5
6
9
8
7
2
4
1
0
0
11
DF
HV
HD
EW
I-HLDWN
VD+
GND
I-PROT
GND
STBY 7.5V
STBY 7.5V
I-PROT
GND
MAIN 1
MAIN 2
MAIN 2
AFT
AGC MUTE
VD-
ABL
O-MON0
O-SAP
I-SAP
I-STEREN
SEL-0
SEL-1
MUTE
HP
RELAY
DGC
CONVERTER
IC601
5V REG
IC604
ERROR AMP
IC602
IC501
V HOLD
CNTRL
V OUT
IC502
IC502
AUDIO AMP
IC402
Y/C JUNGLE
IC1301
CONTROL
TUNING SYSTEM
IC1001
VM
VD-
VD+
EW
ABL
HD
AC
AC
AC POWER
S901
AC
AC
1
1
2
2
CN902
CN901
AC IN
SPR
SPL
+
+
TU101
FOR JIG
MON-L
MON-R
MON-R
VAR/FIX-R
VAR/FIX-L
VAR/FIX-L
MON-L
MON-R
MON-R
VAR/FIX-R
VAR/FIX-L
VAR/FIX-L
IC1701
H
E
A
T
E
R
6
H
CN706
SPSW
SPSW
MONITOR
V3
MONITOR
V3
9V
30V
5V
SET5V
SET9V
30V
SET5V
SET9V
30V
SET5V
SET9V
30V
9V
9V
9V
+B
9V
STBY 7.5V
CN502
V3-L
V3-R
V3-R
V3-L
V3-R
V3-R
PIP-L
IR(SENSOR)
POWER-SW
IR(SENSOR)
POWER-SW
LED-TIMER
GND
V DY+
V DY-
H DY-
H DY-
H DY+
H DY+
V DY-
H DY-
H DY-
H DY+
H DY+
IK
IK
RIN
LIN
LOUT
ROUT
ROUT
MUTE
N.C.
N.C.
MUTE
N.C.
N.C.
(Y/C/J)
(TUNING CONTROL)
AUDIO
REAR
OUTPUT
INPUT
TUNER
DET-OUT
OUT4+
OUT3-
TP 506
H OUT
V OUT
+B
LOW B
+B
D
R
I
V
E
-
D
R
I
V
E
+
REF
OUT
IN+1
IN-1
OUT2
IN+2
O
U
T
1
SW
Q506,507
OCP
Q505
H OUT
Q502
H DRIVE
Q501
AUDIO
LOW B
VCC
+B
D623
MUTE
Q430
Q431
BUFFER
Q432
Q433
AMP
Q903
Q904
VM OUT
Q905
Q906
Q906
VM DRIVE
Q901
Q902
VM
9V
9V
E
NC
+B
+B
VM
9V
9V
E
NC
+B
+B
STBY 7.5V
CN903
VM
E
VM
VM
VM
HP
SPK R+
SPK R-
SPK L+
SPK L-
R BACK
R GO
L BACK
L BACK
L GO
HP GND
IR DETECT
IC2001
FUNCTION
SWITCH
R BACK
R GO
L BACK
L BACK
L GO
HP GND
X1303
X1304
X1305
BUFFER
Q1332,1327
Q1328,1329
Q1328,1329
BUFFER
1306
Q1307,
1308
Q1354,
BUFFER
Q1302
BUFFER
Q1313
BUFFER
Q1310,1311
Q1312
BUFFER
Q1001
X1001
BUFFER
Q1010
H
S
Y
N
C
H
M
A
I
N
Q1009
SEP
HSYNCH
VM OUT
Q1330
HP
Q1003
BUFFER
A
I
N
S
D
A
S
C
L
Y
O
U
T
C
O
U
T
C
K
I
N
VM
EW
ABLIN
HD
VD+
VD-
IK
R IN
B IN
G IN
B IN
G IN
R OUT
G OUT
B OUT
CRT DRIVE
IC702
Q701
N/S MUTE
Q700
N/S MUTE
2
4
1
3
FOCUS
KR 12
KB 10
KG 11
KB 10
KG 11
Q1336
BUFFER
IK BUFFER
Q1331,1350
R,G,B OUT
Q1317,1316
Q1315
Q1301
CONVERG
H TRAP
Q1011,1002
V DY(+)
V DY(-)
H DY(-)
H DY(+)
PIN DRIVE
PIN OUT
Q504
Q503
RECT
+B
LOW B
RECT
RECT
AUDIO
(AC POWER)
AUDIO
IC403
AMP
IC404
AUDIO
PROCESSOR
(AUDIO PROCESSOR)
(VELOCITY)
(MODULATION)
(R.G.B DRIVE)
(CRT DRIVE)
(CRT DRIVE)
PICTURE TUBE
(POWER SUPPLY)
(TUNER/IF)
(AUDIO)
(DEFLECTION)
(MTS)
IC1302
DIG COMB
FILTER
IC1002
HSYNCH SW
STBY +5V
REG
IC1305
MEMORY
IC1003
IC1304
VIDEO SW
Q1325,1326
9V REG
IC603
AGC
Q101
G2
HEATER
6
1
CN704
TP 508
200V
12V
DGC DRIVER
Q609
12V
5V
12V
9V
AC
AC
1
2
CN602
G2
FV
ROUT
GOUT
BOUT
N/S DRIVE
Y1
C1
C1
SDAT
SET9V
30V
SET5V
SCL
O-VOL
I-HLDWN
SDAT
V1
GND
Y1
C1
SCL
GND
PIP-L
LED
KEY-SW
MENU-SW
V2(VIDEO2)
STBY +5V
GND
B
-
D
A
T
B
-
C
L
K
B
-
I
N
T
G
N
D
N/S
H TRAP
NS MUTE
R
B
G
GND
GND
N/S
H TRAP
NS MUTE
R
B
G
B
G
GND
GND
SCL
GND
GND
SDA
SCL
GND
SDA
SCL
SDA
STBY +5V
STBY +5V
I-RMCN
I-POWER
O-LED
I-KEY
I-MENU
O-N/S
O-H TRAP
I-CVIN
I-HLDWN
O-YUYSW
I-VPN
I-HP
O-HSYSW
I-HSYNC
I-HSYNC
O-OSC
I-BSC
I-RESET
O-SCLN
I-SDAT
O-YM
O-OSDBLCK
O-R
O-G
O-G
O-B
O-SEL1
O-SEL0
O-SEL0
I
O
-
B
D
A
T
I
O
-
B
C
L
K
N
I
-
B
I
N
T
V
1
V
0
VIDEO1
V
O
U
T
V
2
S
1
Y
1
CVBS2
HP PROTECT
SDA
SCL
YS2/YM
YS2/YM
R2IN
G2IN
B2IN
G2IN
B2IN
VTIM
YUYSW
XTAL1
XTAL2
XTAL3
COMB Y
COMB C
MONOUT
Y1
V/FSC
C1
NS IN
M
A
I
N
T
V
O-MUTE
O-RELAY
O-DGC
I-PROT
I-AFT
O-AGCMUTE
O-MONO
I-STEREN
O-SAP
I-SAP
V2(VIDEO2)
STBY +5V
KEY-SW
MENU-SW
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