Sony KV-HW21P80A Service Manual ▷ View online
– 22 –
KV-HW21P80A
RM-969
4-2. CIRCUIT BOARDS LOCATION
A Board
C Board
4-3. SCHEMATIC DIAGRAM
Note:
•
•
All capacitors are in
µF unless otherwise noted.
•
All electrolytic capacitors are rated at 50V unless otherwise
noted.
noted.
•
All resistors are in ohms.
k
k
Ω = 1000Ω, MΩ = 1000kΩ
•
Indication of resistance which does not have rating electrical
power is as follows.
power is as follows.
Pitch: 5 mm
Rating electrical power 1/4W (CHIP: 1/10W)
Rating electrical power 1/4W (CHIP: 1/10W)
•
: nonflammable resistor.
•
¢
: internal component.
•
: panel designation or adjustment for rrepair.
•
All variable and adjustable resistors have characteristic curve
B unless otherwise noted.
B unless otherwise noted.
•
Readings are taken with a color-bar signal input.
•
Readings are taken with a 10 M
Ω digital multimeter.
•
Voltage are dc with respect to ground unless otherwise
noted.
noted.
•
Voltage variations may be noted due to normal production
tolerances.
tolerances.
•
All voltage are in Volt.
•
✽
: Cannot be measured.
•
Circled numbers are waveform references.
•
: B +bus.
•
: B –bus.
•
÷
: signal path.
Reference information
RESISTOR
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRD
NONFLAMMABLE CARBON
: FUSE
NONFLAMMABLE FUSIBLE
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
: RW
NONFLAMMABLE 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
Note:
The component identified by shading and
mark
mark
! are critical for safety. Replace only
with part number specified.
– 25 –
KV
-HW21P80A
-HW21P80A
RM-969
A
12345
6
7
B
C
D
E
F
G
H
I
J
(2) C Boar
d Sc
hematic Dia
gram
1
1
1
2
3
4
5
6
7
8
9
1
3
4
5
6
7
8
9
10
11
13
1
1
2
3
4
5
6
1
2
3
4
5
4
GND
NC
200V
GND
1000V
GND
9V
IK
R
G
B
FV
NC
H1
H1
J751
SOCKET, CRT
R773
560K
1/2W
R795
#
R760
100K
1/2W
CN704
1P
TAB
CN703
5P
C752
0.0047
2KV
E
R774
150
3W
:RS
L780
C754
4.7
250V
R781
0.68
3W
:RS
D750
GP08D
R758
1K
1/2W
CN705
1P
TAB
R780
470K
1/2W
C781
4.7
250V
JW702
#
C751
10
250V
C753
0.001
500V
500V
B
C786
0.001
0.001
B
R713
0
CHIP
R778
#
R775
#
R777
#
R765
100
1/2W
D755
HSS82-TJ
R764
100
1/2W
C787
1000P
500V
L783
5MM
L782 5MM
L781 5MM
R756
1K
1/2W
R757 1K 1/2W
R763
100
1/2W
D756
HSS82-TJ
R794
0.47
D754
HSS82-TJ
L750
#
C759
#
R784
56P
CHIP
R785
56P
CHIP
R786
56P
CHIP
C790
#
R752
220
R753 220
C789 #
R768
#
R767 #
R766 #
C788
#
R754 220
Q701
#
D782
UDZSTE-175-6B
C783
0.001
B
R776
#
CN701
6P
R783
100
1/2W
C782 0.001
B
D780
1SS133T-77
D781
1SS133T
-77
IC751
TDA6107Q/N-2
RV750
110M
B-SSSBG2T-CKD-C..HW21P80A
B IN
G IN
R IN
GND
1K
VDD
R OUT
G OUT
B OUT
GND
GND
H
KG
G2
CV KR G1 G4 HV
KB
A51LPT70X
PICTURE TUBE
TO EARTH
COATING ASSY
(VIDEO AMP)
1
2
3
4
200V
200V
9V
R
G
B
R
G
B
R
G
B
TO A BOARD
CN300
TO A BOARD
CN500
C
– 26 –
KV-HW21P80A
RM-969
Ref
Pin No.
Voltage[v]
IC001
1
4.7
2
0
3
0
4
0
5
4.9
6
0
7
0
8
0
9
4.9
10
4.9
11
0.03
12
0.01
13
0
14
0
15
4.9
16
0.15
17
4.8
18
0.01
19
0.9
20
0
21
4.9
22
0
23
0
24
4.9
25
0.44
26
4.2
27
0.03
28
0.07
29
4.9
30
4.8
31
4.9
32
0.01
33
4.9
34
2.4
35
2.12
2.920V
3
36
4.9
37
0
38
2.6
39
0.2
40
4.9
41
4.9
42
1.6
43
0.7
44
4.9
45
4.9
46
4.9
47
0.44
5.280V
2
48
4.8
4.960V
1
49
0
50
0
Ref
Pin No.
Voltage[v]
Ref
Pin No.
Voltage[v]
A BOARD VOLTAGE LIST AND WAVEFORM
51
0
52
0
53
0
54
4.9
55
4.7
56
4.9
57
4.7
58
0.2
59
0.01
60
8.9
61
0.17
62
0
63
0
64
4.9
IC002
I
0
2
4.9
3
4.8
4
12.2
5
4.9
6
0
7
0
IC003
1
0
2
0
3
0
4
0
5
4.9
6
4.9
7
0
8
4.9
IC004
VCC
4.8
G
0
O
4.22
IC201
1
4.5
2
4.5
3
4.5
4
4.5
5
4.5
6
4.5
7
4.5
8
4.5
9
4.5
10
4.5
11
4.5
12
4.5
13
4.5
14
4.5
15
4.5
16
4.5
17
4.5
18
4.5
19
4.5
20
0
21
4.7
22
4.7
23
4.5
24
9
25
0
26
3.8
27
3.8
28
4.5
IC203
1
0
2
0
3
20.5
4
0
5
0
6
0
7
10.1
8
0.3
9
0
10
21.7
11
9.8
12
10.3
IC301
1
0.4
2
3.6
3
0
4
0
5
2.4
6
2.8
2.520V
11
7
4.7
8
4.7
9
6.5
10
0
11
3.3
12
8.1
13
3.7
14
0
15
2.9
16
0.1
17
3.3
18
5.1
19
1.9
3.840V
8
20
1.9
3.320V
9
21
1.8
3.320V
10
22
2.5
23
3.5
24
3.5
25
3.5
26
0.1
27
2.5
28
2.5
29
2.4
1.420V
4
4-4. VOLTAGE MEASUREMENT AND WAVEFORM
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