Sony KLV-20SR3 Service Manual ▷ View online
- 25 -
4-1. BLOCK DIAGRAMS (1)
H1 ( )
CONTROL
BUTTONS
BUTTONS
TO B BOARD
CN0101
3
1
CN9000
SWITCH
S9000, S9001
S9002, S9006
S9002, S9006
SWITCH
S9003, S9004,
S9005
TO A BOARD
CN2211
HEADPHONES
H-PLUGGED
CN9200
CN9300
9
1
3
J9201
J9300
H2
( )
FRONT INPUT,
HP OUTPUT
5
C FRONT
Y/CVBS-FRONT
3
1
TO H3 BOARD
CN3702
V
L
R
4
3
2
1
7
HP-L-OUT
HP-R-OUT
FRONT IN-R
FRONT IN-L
CN3703
H3 ( )
SCART 2
24
RF-SW
22
SW MONITOR
20
C INPUT
18
Y INPUT
Y/C SWITCH
5
VIDEO SWITCH
13
SC2-OUT-R-H3
9
11
2
1
MODE 2
3
TO A BOARD
CN3621
4
15
10
9
11
13
12
1
Y FRONT
BUFFER
Q3709
3
C FRONT
5
C SCART
14
SW OUT
2
Y SCART
BUFFER
Q3708
BUFFER
Q3701
BUFFER
Q3702
BUFFER
Q3707
Y/CVBS FRONT
15
BUFFER
Q2700
BUFFER
Q2701
SC2-IN-R-H3
SC2-OUT-L-H3
SC2-IN-L-H3
AV LINK
C FRONT
C IN
VIDEO OUT
VIDEO IN
RIGHT OUT
RIGHT IN
LEFT OUT
LEFT IN
MODE
AV LINK
CN3702
CN3700
TO H2 BOARD
CN9300
IC3701
ANALOG
MULTIPLEXER/
DE-MULTIPLEXER
1
3
6
1
STBY 5V
TO A BOARD
CN0041
CN9050
LED 2
OUT
IC9050
IR RECEIVER (SIRCS)
H5 ( )
IR RECEIVER
& LED'S
VCC
2
SIRCS
5
LED 1
5V STANDBY
POWER
STANDBY
CN6003
AC IN
AC IN
G ( )
POWER SUPPLY
1
3
1
4
L6000
2
3
IC6000
MAIN BRIDGE RECTIFIER
1
2
VC1
23
16
T6000
D6010
TO B BOARD
CN6301
CN6005
BACKLIGHT
+16.5V
1
4
L6007
2
3
F6000
4A
BRIDGE
RECTIFIER
D6000
BUFFER
Q6000
20
22
SWITCH
Q6003
SWITCH
Q6004
15
OCP
VGL
VS
VGH
F/B
PH6001
PHOTO-
COUPLER
Q6001
Q6002
Q6002
PHOTO-
COUPLER
PH6000
IC6100
STANDBY CONTROLLER/DRIVER
5
3
7
8
2
4
8
4
9
1
5
2
T6100
IC6101
REGULATOR
1
3
PHOTO-
COUPLER
PH6100
BUFFER AMP
Q6005, Q6010,
Q6009
4
2
T6001
4
2
D6013
D6011
SWITCH
Q6006
BUFFER
Q6007
Q6008
Q6008
CN6001
CN6101
2
11
2
TO A BOARD
CN6204
TO A BOARD
CN6201
POWER-AV
STBY 5V
IC6001
REGULATOR
1
3
12
11
10
9
8
7
12
11
10
9
8
7
V SENSE
- 26 -
4-1. BLOCK DIAGRAMS (2)
4-2. CIRCUIT BOARD LOCATION
4-3. SCHEMATIC DIAGRAMS AND
PRINTED WIRING BOARDS
PRINTED WIRING BOARDS
Note :
•
All capacitors are in µF unless otherwise noted.
•
pF : µµF 50WV or less are not indicated except for
electrolytic types.
•
Indication of resistance, which does not have one for
rating electrical power, is as follows.
Pitch : 5mm
Electrical power rating : 1/4W
Electrical power rating : 1/4W
•
Chip resistors are 1/10W
•
All resistors are in ohms.
k = 1000 ohms, M = 1000,000 ohms
•
: nonflammable resistor.
•
: fusible resistor.
•
: internal component.
•
: panel designation or adjustment for repair.
•
All variable and adjustable resistors have
characteristic curve B, unless otherwise noted.
•
All voltages are in Volts.
•
Readings are taken with a 10Mohm digital mutimeter.
•
Readings are taken with a color bar input signal.
•
Voltage variations may be noted due to normal production
tolerences.
•
:
B
+
b
u
s
.
•
: B - bus.
•
: RF signal path.
•
: earth - ground.
•
: earth - chassis.
Reference Information
RESISTOR
RN
: METAL FILM
RC
: SOLID
FPRD
: NON FLAMMABLE CARBON
FUSE
: NON FLAMMABLE FUSIBLE
RS
: NON FLAMMABLE METAL OXIDE
RB
: NON FLAMMABLE CEMENT
RW
: NON FLAMMABLE WIREWOUND
: 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
Les composants identifiés par une trame et
par une marque sont d'une importance
critique pour la sécurité. Ne les remplacer
que par des pièces de numéro spécifié.
specified.
par une marque sont d'une importance
critique pour la sécurité. Ne les remplacer
que par des pièces de numéro spécifié.
specified.
Note :
The components identified by shading
and marked are critical for safety.
Replace only with the part numbers
specified in the parts list.
and marked are critical for safety.
Replace only with the part numbers
specified in the parts list.
Note :
CVM Board
A Board
S1 Board
VM
C
H
D1
A
J
A2
N
D
A1
D2
C
A
H1
B
H2
H5
G
A
H3
A ( )
TUNER, AUDIO,
CHROMA DECODER,
SCART 1
CN3621
VIDEO OUT
Y FRONT
CN0043
TO B BOARD
CN3000
3
SC2-IN-L
SC2-IN-R
BUFFER
Q2600
BUFFER
Q2601
15
17
13
SC2-OUT-R
SC2-OUT-L
BUFFER
Q3600
SC1-OUT-R
SC1-IN-R
SC1-OUT-L
SC1-IN-L
SW MONITOR
Y/C SWITCH
VIDEO SWITCH
MODE 2
Y INPUT
C INPUT
AV LINK
RF SW
RIGHT OUT
RIGHT IN
LEFT OUT
LEFT IN
BLUE IN
MODE
GREEN IN
RED IN
BLANKING
VIDEO IN
C FRONT
LUMINANCE
CHROMINANCE
43
44
CVBS2/Y2-IN
C2-IN
CVBS OUT
41
CVBS3/Y2-IN
15
25
26
27
IC3801
SUB VIDEO PROCESSOR
YS3
B1-IN
G1-IN
R1-IN
1
21
9
22
23
13
14
AMPLIFIER
Q3808
AMPLIFIER
Q3809
2
4
R SCART 1
AMPLIFIER
Q3806
G SCART 1
B SCART 1
FB SCART 1
CVBS AV1
CVBS RF
Y OUT
H5
CB-OUT
CR-OUT
SCL
SDA
AMPLIFIER
Q3807
IC3811
SYNC ADDER
CS
CS
SCL
SDA
CVBS MONITOR
5
24
8
MODE 1
Y SYNC
29
20
CB
CR
SCL-5
SDA-5
21
12
14
28
25
9
1
MODE 2
AV LINK
LUMINANCE
CHROMINANCE
3
IC0002
DIMMER LPF
DIMMER
10
LED 1
11
POWER AV
SIRCS
LED 1
LED 2
+5V STBY
SIRCS
BUFFER
Q0047
4
3
2
5
6
1
TO H5 BOARD
CN9050
CN0041
CN0042
SERVICE
4
3
2
19
IC0030
PORT EXPANDER
AGC DEFEAT
Q1100
2
4
10
14
12
11
BUFFER
Q1200
6
IC1200
TV ID
AMPLIFIER
Q1201
4
COINCIDENCE
CIRCUIT
AMPLIFIER
Q1300,
Q1301
SWITCH
Q0002
16
17
BUFFER
Q0046
P0
P2
P3
P1
P6
SCL
SDA
P5
P4
1
CN3602
TU1100
VIDEO
AGC
SCL
SDA
FM/AM
QSS
BACKLIGHT
CN6201
PANEL DET
DIMMER
2
1
3
CN6204
11
2
IC6202
REGULATOR
1
3
SWITCH &
BUFFER
Q6200, Q6203
POWER AV
+14.3V
+8V
2
IC0001
PORT EXPANDER
4
10
SCL
SDA
BUFFER
Q0001
11
12
Y/C SWITCH
VIDEO SWITCH
14
16
FB-SCART 1
P0
P3
P4
SCL
SDA
48
50
54
IN-3-R
IN-3-L
IN-4-R
72
XTAL OUT
71
2
3
21
IC2000
SOUND PROCESSOR
XTAL IN
SCL
SDA
POWER ON
RESET
67
27
28
24
11
4
21
23
24
8
6
25
2
53
51
47
34
33
37
36
SC2-IN-L
SC1-OUT-R
SC1-OUT-L
SC2-OUT-R
SC2-OUT-L
SC2-IN-R
SC1-IN-R
FRONT-IN-L
SC1-IN-L
FRONT-IN-R
60
FM/AM
BUFFER AMP
Q2100, Q2101
QSS
25
3
IC2300
HEADPHONE AMP
6
7
1
AMPLIFIER
Q2000
77
1
HP PLUGGED
HP-R-OUT
HP-L-OUT
FRONT-IN-L
3
5
7
9
CN2211
FRONT-IN-R
IN-2-L
IN-2-R
SPEAKER OUT R
SPEAKER OUT L
IN-4-L
OUT-2-L
OUT-2-R
OUT-1-L
OUT-1-R
MONO IN(AM)
IF IN 1
HP-R
HP-L
DIGITAL CONTROL OUT 1
BUFFER
Q2001
BUFFER
Q2002
4
2
8
11
12
7
BUFFER
Q2301
3
5
7
1
AMPLIFIER
Q2402
SWITCH
Q2203
Q2200
Q2202
Q2204
Q2202
Q2204
3
1
CN2500
L
R
J2400
TO SPEAKERS
L
R
IC2400
AUDIO LINE BUFFER
IC2500
AUDIO POWER AMP
OUT 2
OUT 1
SP R OUT
SP L OUT
IN2+
IN1+
MUTE TC
MUTE
R.IN
L.IN
TO H2 BOARD
CN9200
X2000
MUTE CIRCUIT
Q2400, Q2401
Q2405, Q2406
Q2405, Q2406
TO H3 BOARD
CN3703
SCART
B SCART 1
MODE 1
G SCART 1
R SCART 1
FB SCART 1
CVBS AV1
TO G BOARD
CN6005
TO G BOARD
CN6001
P1
P2
BUFFER
Q2300
AUDIO OUT
A
B
C
D
E
F
G
H
I
J
K
L
M
N
1
2
3
4
5
6
7
8
9
10
11
O
- 27 -
~ A Board Schematic Diagram [ Tuner, Audio, Chroma Decoder, Scart 1 ] Page 1/3 ~
CN9200
AUDIO LINE
BUFFER
MSD601-RST1
HEADPHONE
AMPLIFIER
470
4.7K
4.7K
0.0022
50V
100
100
0.47
0.47
RB053L
C2036
0.0022
C2037
0.0022
R2031
100K
+5VSTBY
+5VSTBY
+5VSTBY
Q2205
MSD601-RST1
R2209
10K
R2210
100
R2430
0
R2431
0
3.3k
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
A
1/3 TUNER, AUDIO, CHROMA DECODER, SCART 1
TP1
100ns/div
A(1/3) Board Waveform
3.0Vp-p (H)
TP1
TO SPEAKERS
A
B
C
D
E
F
G
H
I
J
K
L
M
N
1
2
3
4
5
6
7
8
9
10
11
O
- 28 -
~ A Board Schematic Diagram [ Tuner, Audio, Chroma Decoder, Scart 1 ] Page 2/3 ~
CN6005
CN6001
CN6300
+
REGULATOR
REGULATOR
220K
RD5.6SB-T1
R6206
10k
R0040
0
XX
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
A
2/3
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