Sony KV-28HX15B Service Manual ▷ View online
- 25 -
5-1. BLOCK DIAGRAMS (2)
J401(1/2)
63
IC001
MICRO, VIDEO
PROCESSOR, ROM, AUDIO,
VIDEO SWITCH
XTAL OUT
RED
TO SPEAKERS
A 1/2 ( )
POWER SUPPLY,
DEFLECTION, VIDEO, AUDIO
5
2
CN1201
64
XTAL IN
+
-
IC1201 AUDIO AMP
MUTE
1
IN/INL
10
14
OUT/L
68
IC401 AV LINK
69
R0 56
10
7
6
5
2
G0 57
B0 58
IK 55
GREE
N
BLUE
IK
EWD 17
VD- 18
VD+ 19
ABL 54
TO C BOARD
CN703
CN003
J401 (2/2)
SDA
6
SCL
5
7
WP
72
SCL
71
SDA
28
CVBS2/
CVBSY2
CVBSY2
2
KEY
3
AGC
53 B2/UIN
1
MODE1
80 MODE2
52 G2/YIN
51 R2/VIN
38 -/C4
50 INSSW2
32 CVBS1
37 -/CVBS4Y4
8
11
7
29
15
16
41
36
20
BLUE
MODE
MODE
GREEN
RED
C2 IN
BLK
V IN 1
Y/V IN 2
BUFFER
Q401, Q411
19
MUTE SW
Q212
CN406
STBY 70
77
TO A 2/2
23
FREE 1 MAGENTA
VD+
V-PULSE
MAGENTA
CN510
TO VM BOARD
CN1701
AVL OUT
AVL IN
34
5
INR
12
CVBS3
28
29
46
47
36
33
53
50
37
34
52
49
1
22
2
23
3
24
6
27
R OUT 1
R OUT 2
R IN 1
R IN 2
L OUT 1
L OUT 2
L IN 1
L IN 2
SC1 OUT R
SC2 OUT R
SC1 IN R
SC2 IN R
SC1 OUT L
SC2 OUT L
SC1 IN L
SC2 IN L
DACMR
DACML
SC3 IN L
SC3 IN R
74
VIDEO
9
6
4
1
KEY
CVBS/Y
R
L
TO H6 BOARD
CN4501
10
9 SCL
SDA
IC201
SOUND PROCESSOR
67
6
5
2
3
4
7
6
22
CN405
LED
SIRCS
KEY
TO
F5 BOARD
CN1100
SERVICE
CN001
75
6
5
2
3
+
-
1
7
19
76
FBISO
SSCP
7
10
9
BUFFER AMP
Q1233
BUFFER AMP
Q1232
J404
R OUT
L OUT
3
6
L IN
R IN
1
4
CN1200
R AUDIO
L AUDIO
TO H6 BOARD
CN4502
OUT/R
X001
LOW B
LED
SIRCS
NVM WP
FREE 1 DEF SW
IC004
4
XTAL OUT
HP PLUGGED
1
35
TO REAR
SPEAKERS
R OUT
L OUT
1
NS CORRECT
28
8
C
63
62
58
55
AMPLIFIER
Q202, Q203
VIDEO
QSS
FM/AM
AGC
SCL
SDA
AGC DEF
TU101
MONO IN
X201
ANA IN
ROTATION COIL
AMPLIFER
Q049
HP PLUGGED
XTAL IN
AVL
V OUT 1
4
78 C6
CS
SCL
SDA
AGC
- 26 -
5-1. BLOCK DIAGRAMS (3)
A 2/2 ( )
5
7
8
RELAY
SWITCH
Q601
T603
(PIT)
(PIT)
9
18
16
11
15
2
IC602
ERROR AMP
PH601
ISOLATOR
AUDIO
VCC
VCC
LOW B
+3.3V
7
5
IC501
V OUTPUT
3
1
VD+
BOOST
REF
OUT
PIN OUT
Q532
6
5
4
3
2
1
T511 FBT
FV
ABL
12
2
4
5
6
13
8
9
11
10
7
V- DY+
V- DY-
H- DY+
H- DY+
TO C BOARD
CN707
H1
200V
TO PICTURE
TUBE
6
5
+
-
+
-
7
IC531
PIN CORRECTION
EWD
HP
PROTECT
IN
VP
VD-
4
1
2
3
T531
HDT
HD
T602
VD
VGCH
VS
+B
HV
CN508
IC601
POWER SUPPLY
-15V RECT
1
2
1
3
DGC
DGC
DGC
DGC CHECK 1
DGC CHECK 2
CN603
CN602
2
1
H- DY-
H- DY-
TO C BOARD
CN706
G2
D625
D608
RELAY
RY601
1
3
4
6
7
9
CT
VSENSE
RT
TIMER
SS
OCP
12
VG(G)
MAIN RECT
D601
Q606
16
LOW B
D618
D619
2
FB
D513
+15V RECT
1
2
8
Q607
H-OUT
Q533
CN501
O
D638
TO A 1/2
POWER SUPPLY,
DEFLECTION, VIDEO, AUDIO
TO DY
RECT
10
1
3
2
1
17
15
14
13
1
1
2
3.3V REG
IC608
D632
TO VM BOARD
CN1809
STBY
1
3
2
8
6
2
H- DY-
SMART
SW
SW532
3
CN509
1
TO D2 BOARD
CN8801
8
7
6
VC1
CN605
PFC
PFC
3
1
PFC
CN606
TO
F5 BOARD
CN6102
4
3
I
1
5
4
IC609
STANDBY POWER
DF
CN512
D514
CN503
TO VM BOARD
CN1702
3
AC IN
AC IN
REG
D614
12
QCP DETECT
Q602, Q603
BUFFER
Q604
H-DRIVE
Q535
D539
D538
10
7
4
1
1
2
5
4
3
T532
T533
H SYNC (15V PULSE)
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
- 28 -
NOTE:
Portions of the circuit marked as shown are high
voltage areas. Use care to prevent electric shock
during inspection or repair.
voltage areas. Use care to prevent electric shock
during inspection or repair.
~ A Printed Wiring Board Conductor side ~
~ A Board Semiconductor
Location Table ~
E
D
O
I
D
1
2
4
D
2
-
C
1
3
6
D
7
-
L
1
0
0
D
2
-
I
2
2
4
D
2
-
C
2
3
6
D
5
-
K
2
0
0
D
3
-
I
3
2
4
D
2
-
C
3
3
6
D
5
-
L
3
0
0
D
2
-
K
4
2
4
D
2
-
M
8
3
6
D
6
-
I
4
0
0
D
4
-
M
7
2
4
D
4
-
A
0
4
6
D
5
-
L
6
0
0
D
8
-
M
8
2
4
D
3
-
C
R
O
T
S
I
S
N
A
R
T
7
0
0
D
1
-
K
9
2
4
D
3
-
D
3
1
0
Q
3
-
I
8
0
0
D
3
-
L
5
3
4
D
2
-
A
4
1
0
Q
1
-
L
0
1
0
D
2
-
G
6
3
4
D
2
-
A
9
4
0
Q
3
-
J
1
1
0
D
2
-
F
1
0
5
D
9
-
D
2
0
2
Q
3
-
E
3
1
0
D
1
-
M
2
0
5
D
9
-
D
3
0
2
Q
2
-
F
6
1
0
D
2
-
J
3
0
5
D
2
-
I
2
1
2
Q
5
-
I
8
1
0
D
3
-
I
4
0
5
D
2
-
I
1
0
4
Q
1
-
C
0
2
0
D
8
-
M
5
0
5
D
2
-
M
9
0
4
Q
1
-
G
1
2
0
D
2
-
L
6
0
5
D
4
-
D
1
1
4
Q
2
-
D
2
2
0
D
2
-
J
7
0
5
D
2
-
M
2
3
5
Q
4
-
D
5
3
0
D
3
-
K
2
1
5
D
8
-
D
3
3
5
Q
6
-
A
6
3
0
D
3
-
K
3
1
5
D
9
-
D
5
3
5
Q
4
-
B
1
5
0
D
3
-
L
4
1
5
D
9
-
C
1
0
6
Q
5
-
K
1
0
1
D
1
-
B
4
3
5
D
5
-
E
2
0
6
Q
5
-
G
3
0
1
D
1
-
E
5
3
5
D
6
-
E
3
0
6
Q
5
-
G
4
0
1
D
2
-
E
6
3
5
D
6
-
B
4
0
6
Q
5
-
H
5
0
1
D
1
-
A
7
3
5
D
4
-
C
6
0
6
Q
0
1
-
G
6
0
1
D
1
-
B
8
3
5
D
6
-
E
7
0
6
Q
9
-
G
7
0
1
D
2
-
B
9
3
5
D
5
-
B
8
0
6
Q
6
-
J
7
0
2
D
3
-
F
1
4
5
D
5
-
F
9
0
6
Q
6
-
J
0
1
2
D
5
-
I
3
7
5
D
5
-
F
0
1
2
1
Q
3
-
H
1
1
2
D
5
-
I
1
0
6
D
9
-
I
1
1
2
1
Q
3
-
H
2
1
2
D
5
-
I
2
0
6
D
5
-
J
0
3
2
1
Q
3
-
B
8
2
2
D
4
-
E
4
0
6
D
9
-
F
1
3
2
1
Q
3
-
B
6
3
2
D
3
-
D
8
0
6
D
8
-
F
2
3
2
1
Q
3
-
B
9
3
2
D
3
-
D
0
1
6
D
5
-
J
3
3
2
1
Q
2
-
C
2
0
4
D
3
-
E
1
1
6
D
5
-
G
S
'
C
I
3
0
4
D
2
-
B
2
1
6
D
5
-
G
1
0
0
C
I
2
-
K
4
0
4
D
3
-
I
3
1
6
D
6
-
J
2
0
0
C
I
8
-
M
5
0
4
D
2
-
B
4
1
6
D
8
-
K
4
0
0
C
I
2
-
H
6
0
4
D
2
-
B
5
1
6
D
5
-
H
1
0
4
C
I
3
-
I
7
0
4
D
2
-
B
8
1
6
D
6
-
H
1
0
5
C
I
0
1
-
E
8
0
4
D
2
-
B
9
1
6
D
6
-
H
1
3
5
C
I
4
-
F
0
1
4
D
2
-
C
0
2
6
D
5
-
M
1
0
6
C
I
0
1
-
F
1
1
4
D
3
-
C
1
2
6
D
5
-
J
2
0
6
C
I
7
-
F
2
1
4
D
3
-
D
2
2
6
D
7
-
H
4
0
6
C
I
5
-
H
3
1
4
D
3
-
C
3
2
6
D
5
-
J
8
0
6
C
I
5
-
L
4
1
4
D
2
-
B
5
2
6
D
6
-
H
9
0
6
C
I
6
-
L
8
1
4
D
3
-
B
7
2
6
D
7
-
K
1
0
2
1
C
I
4
-
H
9
1
4
D
2
-
E
8
2
6
D
7
-
L
0
2
4
D
2
-
B
9
2
6
D
7
-
L
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