Read Sony KV-21LS30B Service Manual online
23
24
5-1.
BLOCK DIA
GRAMS (1)
LOWB
5
4
1
C
N
001
J4
0
1
(1
/2
)
79
63
5
7
4
3
2
1
5
4
RELAY
SWITC
H
Q6
0
1
T6
0
3
SRT
16
15
17
18
18
16
1
2
15
8
11
12
IC6
0
2
E
RROR A
M
P
1
2
PH60
1
ISOLAT
O
R
+B
D63
8
RE
C
T
AUD
IO
VC
C
+B
LOWB
3.3V
R
E
G
H-O
U
T
Q5
3
3
STBY
+3.
3
V
IC6
0
8
7
5
IC5
0
1
V O
U
TPU
T
3
1
VD+
BOO
S
T
REF
OU
T
PI
N O
U
T
Q5
3
2
6
5
4
3
2
1
D
5
71,
Q571
,5
7
4
T5
1
1
FBT
FV
ABL
12
3
4
1
5
6
13
8
9
11
10
7
V DY
V- DY+
DY A
SSY
V- D
Y
-
H DY
H- DY+
H- DY-
V- DY+
V- D
Y
-
H- DY+
H- DY+
T
O
C BO
ARD
C
N
707
H1
20
0
V
T
O
PI
CT
URE
TU
B
E
2
3
6
5
+
-
+
-
1
7
IC5
3
1
P
IN CORRE
CT
IO
N
EW
HP
PROTE
C
T
IN
VP
VD
-
41
2
3
T5
3
1
HD
T
IC6
0
9
STAND
B
Y
POW
E
R
HD
D
C
T6
0
2
D63
2
RE
C
T
IC
001
M
ICRO
, VI
DEO
PRO
CESSO
R,
RO
M
, AUDI
O
,
VI
DEO
SWI
T
C
H
C
N
601
C
N
510
VD
VG
C
H
VS
HP
+B
HV
C
N
508
XTAL OUT
RE
D
NVM WP
LE
D
L AUDIO
TO SPEAKERS
A
(
)
PO
WER SUPPL
Y,
DEF
L
ECT
IO
N,
SM
AL
L
SI
G
N
AL
BO
ARD,
AUDI
O
AM
PL
IF
IE
R
IC6
0
1
D51
4
-15V RECT
VIDEO
L
+5
V
STBY
1
2
1
3
DG
C
DG
C
DG
C
DG
C
CHE
C
K
DGC CHE
CK
C
N
603
C
N
602
POW
E
R
S6
0
1
2
1
H- DY-
H- DY-
T
O
C BO
ARD
C
N
706
G2
IC6
0
4
DUA
L
DC RE
GUL
A
T
OR
2
1
+8
V
D60
8
LIN
E
FILTE
R
T
601
RELAY
RY6
0
1
M
A
IN
RECT
D60
1
1
3
4
6
7
9
CT
VSENSE
RT
TIMER
SS
OC
P
12
VG(
G
)
Q6
0
6
Q6
0
7
6
5
4
7
3
LOWB
D62
4
D62
2
D61
8
D61
9
VM VCC
Q
C
P DET
ECT
Q612, 602
1
4
CN12
0
1
J
1
200
R AUDIO
64
XTAL IN
48
AUDIO MUTE
5
A
UD O
U
T
/CV
6520
6
67
2
1V
C
C
O
U
T
IC
002
REM
O
T
E CO
NT
RO
L
RECEIVER
+3.
3
V
STBY
6
5
2
3
+
-
+
-
7
1
+
5
V STBY
IC2
0
1
A
UDI
O A
M
P
MUTE
1
IN/INL
10
14
OUT/L
H-DRIV
E
Q5
3
5
F
UNCT
IO
N SWI
T
C
H
S
001 -
S
006
68
IC4
0
1
AV LINK
+
5
V STBY
69
R0
58
A1
0
B1
0
1
2
3
4
G0
57
B0
56
IK
55
GRE
E
N
BLUE
IK
EWD
17
VD-
18
VD
+
19
AB
L
54
73
T
O
C BO
ARD
C
N
703
T
O
C BO
ARD
CN17
0
5
7
C
N
504
J4
0
1
(2
/2
)
NS
C CORRE
CT
ROT COIL
AGC
SC
L
SDA
VIDEO
IC
004
SDA
6
SCL
5
7
WP
71
SC
L
72
SDA
36
CVBS
2
/
CVBS
Y
2
2
KEY/CS
3
AGC
53
B2/U
IN
1
MODE
1
80
MODE
2
52
G2/YIN
51
R2/V
IN
46
-/
C
4
50
INSSW
2
40
CVB
S
1
45
-/CVBS4
Y
4
65
KEY/CS
32
AUDIO 1
29
AUDIO 2
42
CVB
S
3
A8
A1
1
A7
B8
A1
5
A1
6
B2
0
B1
5
A2
0
A2
BL
U
E
I
N
MODE
1
MODE
2
GREEN IN
RED IN
C2 I
N
BL
K
V IN 1
Y/
V I
N
2
IC
003
RESET
BUFF
E
R
Q401
,4
1
1
A1
9
T
U
101
MU
TE
S
W
Q2
1
2
AUDIO
AUDIO
VIDEO
STBY
70
2
FB
D51
3
+15V RECT
5
1
D62
5
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