DOWNLOAD Sony KV-25FV12B Service Manual ↓ Size: 4.7 MB | Pages: 34 in PDF or view online for FREE

Model
KV-25FV12B
Pages
34
Size
4.7 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / BRAZIL
File
kv-25fv12b.pdf
Date
PREV: Sony KV-21FE12B Service Manual

Sony KV-25FV12B Service Manual ▷ View online

KV-25FV12B
SECTION 6
DIAGRAMS
— 28 —
— 27 —
— 30 —
— 29 —
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
MUTE
MUTE
VOL-CTRL
Q410
VOL-CTRL
Q411
MUTE
C
Y
TV-L
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
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
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
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
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
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
VAR/FIX-R
VAR/FIX-L
MON-L
MON-R
VAR/FIX-R
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-L
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+
IK
IK
RIN
LIN
LOUT
ROUT
MUTE
N.C.
MUTE
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
VM DRIVE
Q901
Q902
VM
9V
E
NC
+B
VM
9V
E
NC
+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 GO
HP GND
IR DETECT
IC2001
FUNCTION
SWITCH
R BACK
R GO
L BACK
L GO
HP GND
X1303
X1304
X1305
BUFFER
Q1332,1327
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
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
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)
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
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
GND
GND
SCL
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
O-OSC
I-BSC
I-RESET
O-SCLN
I-SDAT
O-YM
O-OSDBLCK
O-R
O-G
O-B
O-SEL1
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
R2IN
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
KV-25FV12B
SECTION 6
DIAGRAMS
— 28 —
— 27 —
— 30 —
— 29 —
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
MUTE
MUTE
VOL-CTRL
Q410
VOL-CTRL
Q411
MUTE
C
Y
TV-L
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
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
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
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
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
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
VAR/FIX-R
VAR/FIX-L
MON-L
MON-R
VAR/FIX-R
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-L
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+
IK
IK
RIN
LIN
LOUT
ROUT
MUTE
N.C.
MUTE
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
VM DRIVE
Q901
Q902
VM
9V
E
NC
+B
VM
9V
E
NC
+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 GO
HP GND
IR DETECT
IC2001
FUNCTION
SWITCH
R BACK
R GO
L BACK
L GO
HP GND
X1303
X1304
X1305
BUFFER
Q1332,1327
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
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
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)
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
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
GND
GND
SCL
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
O-OSC
I-BSC
I-RESET
O-SCLN
I-SDAT
O-YM
O-OSDBLCK
O-R
O-G
O-B
O-SEL1
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
R2IN
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
KV-25FV12B
6-3. PLACA DE CIRCUITO IMPRESSO E
DIAGRAMA ESQUEMÁTICO
• All capacitors are in 
µ
F unless otherwise noted.
pF:
 µµ
F 50 WV or less are not indicated except for
electrolytic and tantalums.
• All electrolytics are 50V unless otherwise specified.
• Indication of resistance, which does not have one for
rating electrical power, is as follows:
Pitch: 5mm
Rating electrical power 1/4W (CHIP: 1/10W)
• All resistors are in ohms.
K
Ω
  = 1000
Ω
      M
Ω
  = 1000K
Ω
•
: nonflammable resistor
•
: fusible resistor
•
: internal component
•
: panel designation and adjustment for repair
•
: earth-ground
•
: earth-chassis
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• The components identified by 
 in this manual have
been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation. Should
replacement be required, replace only with the value
originally used.
• When replacing components identified by 
, make the
necessary adjustments indicated. If results do not meet
the specified value, change the component identified
by 
 and repeat the adjustment until the specified value
is achieved (refer to Safety Related Adjustments on
page XX).
• When replacing parts shown in the table below, be sure
to perform the related adjustments.
6.2  LOCALIZAÇÃO DAS PLACAS
A Board
CB Board
K Board
MB Board
VB Board
Part Replaced (     )
Adjustment (     )
HV HOLD-DOWN
(R564)
B+ VOLTAGE
CONFIRMATION
DY, T505, CRT, IC501, C507,C520, 
C505, C509, C515, T504,T503,
C551, L510, C546, C537, C547,
D517, D518, D519, R560,R561, 
R562, R563, R565, R566, R567,
R525.....................................A Board 
IC1301...............................MB Board
IC601, PH601...................A Board
• All voltages are in Volts
• Voltage is DC with respect to ground unless otherwise
noted.
• Readings are taken with a 10MW digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal
production tolerance.
• Circled numbers are waveform references.
• *
: cannot be measured
•
: B + Line
• -----
: B - Line
•
: Signal path
Reference Information
RESISTOR
:
RN
METAL  FILM
:
RC
SOLID
:
FPRD
NON FLAMMABLE CARBON
:
FUSE
NON FLAMMABLE FUSIBLE
:
RW
NON FLAMMABLE
WIREWOUND
:
RS
NON FLAMMABLE METAL
OXIDE
:
RB
NON FLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL
:
LF-8L
MICRO INDUCTOR
CAPACITOR
:
TA
TANTALUM
:
PS
STYROL
:
PP
POLYPROPYLENE
:
PT
MYLAR
:
MPS
METALIZED POLYESTER
:
MPP
METALIZED POLYPROPYLENE
:
ALB
BIPOLAR
:
ALT
HIGH TEMPERATURE
:
ALR
HIGH RIPPLE
The components identified by shading and 
  mark
are critical for safety. Replace only with the part
number specified.  The symbol 
 (displayed on
component side of the circuit board) indicates fast
operating fuse. Replace only with fuse of the same
rating as marked.
Note:
Les composants identifiés per un tramé et une
marque 
  sont critiques pour la sécurité. Ne les
remplacer que par une piéce portant le numéro
spécifié.   Le symbole 
 indique une fusible a
action rapide. Doit etre remplacee par une fusible de
meme yaleur, comme marque.
HZ Board
A BOARD: IC502 TDA8172
TDA8580Q/N1
VP1
3
IN 1
7
VP2
15
IN 2
8
+
-
+
-
60
k
60
k
V/l
V/l
+
-
OA
+
-
OA
OUT 1 +
OUT 2 -
1
4
45 k
45 k
Vpx
30 k
BUFFER
IN 4
IN 5
12
+
-
60
k
60
k
V/l
+
-
OA
+
-
OA
OUT 3 -
OUT 4 +
14
17
45 k
45 k
11
BUFFER
BUFFER
45
k
45
k
Vpx
+
-
V/l
MUTE
13
STANDBY
5
DIAG
6
DIAGNOSTIC
INTERFACE
IN 3
10
PGND1
2
PGND2
16
9
DIAGRAMA EM BLOCOS DO IC DA PLACA A
A BOARD: IC402 TDA8580Q/N1
  
  
  
  
  
  
  
  
  
  
  
  
R438
R522
R541
R450
R445
C625
L601
C402
R451
R446
R439
C454
C628
R566
C611
S2005
S2001
S2002
R609
T604
R614
VDR601
T602
R617
TH601
C640
S2006
R2005
C633
C605
R2003
S2007
S2008
R2007
R653
R655
C608
RY602
R236
R235
R239
R238
R237
C216
C210
R651
R663
R661
R508
R634
R635
R442
R443
R444
R114
R115
R106
R204
R102
L101
L103
R105
R213
J201
C205
L102
R211
R215
C448
R436
R454
C213
R241
R240
R424
R527
R525
R514
R567
R225
R529
C530
C546
R563
R218
R227
C542
C541
C518
R231
R232
R557
C552
R543
C532
R537
R540
C543
C519
R535
L507
R546
R534
R545
C551
L510
R533
R524
R515
R516
C503
C536
C504
C513
R507
T503
T502
C527
R659
C629
L602
R447
D507
C659
R402
FB610
R643
C644
C646
R644
C652
FB603
R647
RY601
THP601
R623
C631
D603
C613
R618
C614
C630
R627
FB601
C617
FB609
R632
C524
R539
R518
FB502
R505
R506
L501
C606
T601
CN602
F601
Q605
Q606
Q607
CN604
CN601
CN603
CN2001
CN503
CN402
Q602
Q609
Q604
Q603
C627
Q410
Q507
CN2006
Q101
CN2007
CN2002
CN2008
CN2005
CN2009
CN407
IC405
IC406
IC502
CN502
Q411
CN511
CN506
CN515
Q501
IC601
C403
JR2003
JR503
JR2001
        
R657
  
  
  
  
C603
C607
Q505
C102
C602
C619
C654
C699
IC501
L502
R532
CN2004
JR002
D233
D232
D520
R561
D234
D235
D203
D202
D209
R206
CN406
C615
R565
R558
R559
TH501
R633
R511
R503
C554
C525
C511
R2015
S2003
D2002
S2004
D2001
D400
CN408
D212
D2005
D604
D606
D609
FB602
C661
JR603
JR604
D616
D521
R502
R547
R504
C505
D506
CN501
R568
D511
D514
D517
D518
R226
D236
R2051
D208
D205
D206
IC401
IC604
PH601
D510
R404
JR409
R407
D627
D624
C211
IC402
R490
D620
C649
D611
R641
D210
R403
Q401
Q201
Q503
D631
Q206
Q205
Q502
R553
C555
C515
C509
C624
IC602
R2020
R804
R803
R802
R801
R800
R531
R573
R423
C550
C496
R495
D516
R554
R555
T505
CN504
JR501
L505
T504
L509
R660
D605
R601
  
  
  
  
C547
C444
1
2
6
7
B
E
1
7
B
E
1
9
10
18
6.3A
1
11
1
6
1
4
1
5
1
5
1
3
1
10
1
10
1
9
1
9
1
5
G
1
9
1
3
1
1
4
B
E
RISK OF FIRE
S
B
E
25
27
23
17
1
6
E
135V
B
E
5
4
B
E
+
-
1
2
1
4
5
8
1
1
4
5
8
I
O
C
B
2
6
4
AC IN
AC IN
RGO
RBK
LBK
LGO
GND
1
TO MA/MB BOARD
LED-TIMER
POWER-SW
MENU
IR
KEY
V2
C2
GND
STBY-5V
Y2
GND
11
GND
L2
LED-MAIN
RBK
RGO
LBK
LGO
H DY +
H DY -
V DY +
V DY -
H DY +
H DY -
1
2
3
4
5
6
B
C
13
15
21
7
GND
6
1
2
3
20
18
1
6
D213
4
GND
H-OUT
DET-OUT 1
7.5V STBY
9V SET
SCL
SDAT
5V SET
30V
AGC
H.PROT
HEATER
-13V
200V
H.PULSE
H.DRIVE
+B
AS MARKED
REPLACE FUSE
5
JUMPER-ID
T6.3AL
8
FBT
1-677-295-31
1
6
31
11
15
21
1
2
3
4
[POWER SUPPLY, DEFLECTION, TUNER/IF, AUDIO, MTS]
A
B
C
D
E
F
G
H
I
5
6
7
8
9
10
11
12
D230
D-11
D506
E-8
D517
F-11
D606
B-3
D615
F-5
D625
G-2
Q506
A-6
Q608
E-2
D204
C-10
D231
D-11
D507
E-8
D518
F-11
D607
B-4
D616
F-6
D626
G-2
IC402
D-9
Q101
B-9
Q507
A-6
Q609
A-4
D205
A-11
D400
E-1
D508
E-10
D519
E-10
D608
B-4
D617
G-2
D627
H-2
IC501
D-9
Q410
B-7
Q601
B-3
D206
A-11
D401
E-8
D509
H-5
D520
F-12
D609
D-4
D618
G-2
D628
G-2
IC502
F-10
Q411
D-8
Q602
A-3
D208
B-11
D501
H-8
D510
E-10
D601
D-2
D610
C-4
D619
D-2
D2001
E-2
IC601
B-5
Q501
H-6
Q603
C-6
D209
B-11
D502
G-9
D511
G-10
D602
E-2
D611
C-6
D620
E-7
D2002
F-1
IC602
C-7
Q502
H-7
Q604
A-5
D210
B-11
D503
G-9
D513
F-10
D603
B-3
D612
C-2
D622
F-3
D2003
B-1
IC603
E-7
Q503
D-8
Q605
G-3
D212
B-11
D504
H-9
D514
F-11
D604
A-3
D613
D-6
D623
F-3
D2004
A-3
IC604
C-8
Q504
E-9
Q606
G-3
D213
B-2
D505
G-7
D516
G-12
D605
D-4
D614
D-6
D624
H-2
D2005
A-2
IC2001
F-1
Q505
G-11
Q607
D-2
IC
A BOARD LOCATOR LIST
DIODE
TRANSISTOR
— 32 —
— 31 —
— 34 —
— 33 —
KV-25FV12B
6-3. PLACA DE CIRCUITO IMPRESSO E
DIAGRAMA ESQUEMÁTICO
• All capacitors are in 
µ
F unless otherwise noted.
pF:
 µµ
F 50 WV or less are not indicated except for
electrolytic and tantalums.
• All electrolytics are 50V unless otherwise specified.
• Indication of resistance, which does not have one for
rating electrical power, is as follows:
Pitch: 5mm
Rating electrical power 1/4W (CHIP: 1/10W)
• All resistors are in ohms.
K
Ω
  = 1000
Ω
      M
Ω
  = 1000K
Ω
•
: nonflammable resistor
•
: fusible resistor
•
: internal component
•
: panel designation and adjustment for repair
•
: earth-ground
•
: earth-chassis
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• The components identified by 
 in this manual have
been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation. Should
replacement be required, replace only with the value
originally used.
• When replacing components identified by 
, make the
necessary adjustments indicated. If results do not meet
the specified value, change the component identified
by 
 and repeat the adjustment until the specified value
is achieved (refer to Safety Related Adjustments on
page XX).
• When replacing parts shown in the table below, be sure
to perform the related adjustments.
6.2  LOCALIZAÇÃO DAS PLACAS
A Board
CB Board
K Board
MB Board
VB Board
Part Replaced (     )
Adjustment (     )
HV HOLD-DOWN
(R564)
B+ VOLTAGE
CONFIRMATION
DY, T505, CRT, IC501, C507,C520, 
C505, C509, C515, T504,T503,
C551, L510, C546, C537, C547,
D517, D518, D519, R560,R561, 
R562, R563, R565, R566, R567,
R525.....................................A Board 
IC1301...............................MB Board
IC601, PH601...................A Board
• All voltages are in Volts
• Voltage is DC with respect to ground unless otherwise
noted.
• Readings are taken with a 10MW digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal
production tolerance.
• Circled numbers are waveform references.
• *
: cannot be measured
•
: B + Line
• -----
: B - Line
•
: Signal path
Reference Information
RESISTOR
:
RN
METAL  FILM
:
RC
SOLID
:
FPRD
NON FLAMMABLE CARBON
:
FUSE
NON FLAMMABLE FUSIBLE
:
RW
NON FLAMMABLE
WIREWOUND
:
RS
NON FLAMMABLE METAL
OXIDE
:
RB
NON FLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL
:
LF-8L
MICRO INDUCTOR
CAPACITOR
:
TA
TANTALUM
:
PS
STYROL
:
PP
POLYPROPYLENE
:
PT
MYLAR
:
MPS
METALIZED POLYESTER
:
MPP
METALIZED POLYPROPYLENE
:
ALB
BIPOLAR
:
ALT
HIGH TEMPERATURE
:
ALR
HIGH RIPPLE
The components identified by shading and 
  mark
are critical for safety. Replace only with the part
number specified.  The symbol 
 (displayed on
component side of the circuit board) indicates fast
operating fuse. Replace only with fuse of the same
rating as marked.
Note:
Les composants identifiés per un tramé et une
marque 
  sont critiques pour la sécurité. Ne les
remplacer que par une piéce portant le numéro
spécifié.   Le symbole 
 indique une fusible a
action rapide. Doit etre remplacee par une fusible de
meme yaleur, comme marque.
HZ Board
A BOARD: IC502 TDA8172
TDA8580Q/N1
VP1
3
IN 1
7
VP2
15
IN 2
8
+
-
+
-
60
k
60
k
V/l
V/l
+
-
OA
+
-
OA
OUT 1 +
OUT 2 -
1
4
45 k
45 k
Vpx
30 k
BUFFER
IN 4
IN 5
12
+
-
60
k
60
k
V/l
+
-
OA
+
-
OA
OUT 3 -
OUT 4 +
14
17
45 k
45 k
11
BUFFER
BUFFER
45
k
45
k
Vpx
+
-
V/l
MUTE
13
STANDBY
5
DIAG
6
DIAGNOSTIC
INTERFACE
IN 3
10
PGND1
2
PGND2
16
9
DIAGRAMA EM BLOCOS DO IC DA PLACA A
A BOARD: IC402 TDA8580Q/N1
  
  
  
  
  
  
  
  
  
  
  
  
R438
R522
R541
R450
R445
C625
L601
C402
R451
R446
R439
C454
C628
R566
C611
S2005
S2001
S2002
R609
T604
R614
VDR601
T602
R617
TH601
C640
S2006
R2005
C633
C605
R2003
S2007
S2008
R2007
R653
R655
C608
RY602
R236
R235
R239
R238
R237
C216
C210
R651
R663
R661
R508
R634
R635
R442
R443
R444
R114
R115
R106
R204
R102
L101
L103
R105
R213
J201
C205
L102
R211
R215
C448
R436
R454
C213
R241
R240
R424
R527
R525
R514
R567
R225
R529
C530
C546
R563
R218
R227
C542
C541
C518
R231
R232
R557
C552
R543
C532
R537
R540
C543
C519
R535
L507
R546
R534
R545
C551
L510
R533
R524
R515
R516
C503
C536
C504
C513
R507
T503
T502
C527
R659
C629
L602
R447
D507
C659
R402
FB610
R643
C644
C646
R644
C652
FB603
R647
RY601
THP601
R623
C631
D603
C613
R618
C614
C630
R627
FB601
C617
FB609
R632
C524
R539
R518
FB502
R505
R506
L501
C606
T601
CN602
F601
Q605
Q606
Q607
CN604
CN601
CN603
CN2001
CN503
CN402
Q602
Q609
Q604
Q603
C627
Q410
Q507
CN2006
Q101
CN2007
CN2002
CN2008
CN2005
CN2009
CN407
IC405
IC406
IC502
CN502
Q411
CN511
CN506
CN515
Q501
IC601
C403
JR2003
JR503
JR2001
        
R657
  
  
  
  
C603
C607
Q505
C102
C602
C619
C654
C699
IC501
L502
R532
CN2004
JR002
D233
D232
D520
R561
D234
D235
D203
D202
D209
R206
CN406
C615
R565
R558
R559
TH501
R633
R511
R503
C554
C525
C511
R2015
S2003
D2002
S2004
D2001
D400
CN408
D212
D2005
D604
D606
D609
FB602
C661
JR603
JR604
D616
D521
R502
R547
R504
C505
D506
CN501
R568
D511
D514
D517
D518
R226
D236
R2051
D208
D205
D206
IC401
IC604
PH601
D510
R404
JR409
R407
D627
D624
C211
IC402
R490
D620
C649
D611
R641
D210
R403
Q401
Q201
Q503
D631
Q206
Q205
Q502
R553
C555
C515
C509
C624
IC602
R2020
R804
R803
R802
R801
R800
R531
R573
R423
C550
C496
R495
D516
R554
R555
T505
CN504
JR501
L505
T504
L509
R660
D605
R601
  
  
  
  
C547
C444
1
2
6
7
B
E
1
7
B
E
1
9
10
18
6.3A
1
11
1
6
1
4
1
5
1
5
1
3
1
10
1
10
1
9
1
9
1
5
G
1
9
1
3
1
1
4
B
E
RISK OF FIRE
S
B
E
25
27
23
17
1
6
E
135V
B
E
5
4
B
E
+
-
1
2
1
4
5
8
1
1
4
5
8
I
O
C
B
2
6
4
AC IN
AC IN
RGO
RBK
LBK
LGO
GND
1
TO MA/MB BOARD
LED-TIMER
POWER-SW
MENU
IR
KEY
V2
C2
GND
STBY-5V
Y2
GND
11
GND
L2
LED-MAIN
RBK
RGO
LBK
LGO
H DY +
H DY -
V DY +
V DY -
H DY +
H DY -
1
2
3
4
5
6
B
C
13
15
21
7
GND
6
1
2
3
20
18
1
6
D213
4
GND
H-OUT
DET-OUT 1
7.5V STBY
9V SET
SCL
SDAT
5V SET
30V
AGC
H.PROT
HEATER
-13V
200V
H.PULSE
H.DRIVE
+B
AS MARKED
REPLACE FUSE
5
JUMPER-ID
T6.3AL
8
FBT
1-677-295-31
1
6
31
11
15
21
1
2
3
4
[POWER SUPPLY, DEFLECTION, TUNER/IF, AUDIO, MTS]
A
B
C
D
E
F
G
H
I
5
6
7
8
9
10
11
12
D230
D-11
D506
E-8
D517
F-11
D606
B-3
D615
F-5
D625
G-2
Q506
A-6
Q608
E-2
D204
C-10
D231
D-11
D507
E-8
D518
F-11
D607
B-4
D616
F-6
D626
G-2
IC402
D-9
Q101
B-9
Q507
A-6
Q609
A-4
D205
A-11
D400
E-1
D508
E-10
D519
E-10
D608
B-4
D617
G-2
D627
H-2
IC501
D-9
Q410
B-7
Q601
B-3
D206
A-11
D401
E-8
D509
H-5
D520
F-12
D609
D-4
D618
G-2
D628
G-2
IC502
F-10
Q411
D-8
Q602
A-3
D208
B-11
D501
H-8
D510
E-10
D601
D-2
D610
C-4
D619
D-2
D2001
E-2
IC601
B-5
Q501
H-6
Q603
C-6
D209
B-11
D502
G-9
D511
G-10
D602
E-2
D611
C-6
D620
E-7
D2002
F-1
IC602
C-7
Q502
H-7
Q604
A-5
D210
B-11
D503
G-9
D513
F-10
D603
B-3
D612
C-2
D622
F-3
D2003
B-1
IC603
E-7
Q503
D-8
Q605
G-3
D212
B-11
D504
H-9
D514
F-11
D604
A-3
D613
D-6
D623
F-3
D2004
A-3
IC604
C-8
Q504
E-9
Q606
G-3
D213
B-2
D505
G-7
D516
G-12
D605
D-4
D614
D-6
D624
H-2
D2005
A-2
IC2001
F-1
Q505
G-11
Q607
D-2
IC
A BOARD LOCATOR LIST
DIODE
TRANSISTOR
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— 34 —
— 33 —
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