Sony KV-28CS70B Service Manual ▷ View online
- 25 -
5-1. BLOCK DIAGRAMS (2)
DGC
10
+6V
AU (+)
CN6001
RECT
D6102
AC IN
AC IN
TO F5 BOARD
CN6102
G ( )
POWER SUPPLY
1
5
CN6002
CHECK
CHECK
CN6003
CN6004
PFC
PFC
CN6008
MAIN RY
DGC RY
TO A BOARD
CN6200
DGC
DGC
3
1
T6003
4
2
3
1
T6101
4
2
9
7
8
RELAY
SWITCH
Q6103
11
12
13
14
16
1
2
3
7
9
6
8
IC6001
MAIN BRIDGE RECTIFIER
1
V SENSE
2
F/B
CT
4
RT
8
9
VC 1
OCP
3
TIMER
7
SS
6
18
16
15
14
12
10
VD
VG
VG (L)
VC 2
VS
VB
RELAY
SWITCH
Q6101
RELAY
RY6001
RELAY
RY6002
MAIN RECT
D6001
MOSFET
TRANSISTOR
SWITCH
Q6006
MOSFET
TRANSISTOR
SWITCH
Q6007
PH6001
T6002
RECT
D6010
RECT
D6016
1
2
IC6003
ERROR AMPLIFIER
TO A BOARD
CN6202
6
5
CN6006
AU (+)
+135V
D6004
FOR CHECK
+11V
15
17
18
D6031
D6033
D6034
D6032
1
1
2
3
Q6104
Q6105
1
3
1
2
1
2
4
3
C6018
SWITCH
Q6005,
Q6010
OCP
12
C6015
CN8611
6
4
5
3
2
1
V -
TO A BOARD (1/2)
CN8001
V DY
V- DY+
DY ASSY
V- DY-
H DY
H- DY+
H- DY-
1
2
4
+200V
T8800
V +
H +
H +
H -
1
3
CN8612
V +
V -
CN8810
TO A BOARD (1/2)
CN5801
+
-
2
3
COMPARATOR IC8100
1
4
+
-
7
8
5
3
4
H CENTRE
M PIN CONT
2
3
4
5
6
7
8
CN8620
MP PARA
E/W
H LIN
H DRIVE
AFC PULSE
ABL
X RAY PROTECT
Q8201,
Q8202,Q8118
T8802 HDT
1
4
2
T8801 HDT
Q8122
Q8112
+8
HD1
TO A BOARD (1/2)
CN5002
D ( )
DEFLECTION
D8819
+15V
-15V
D8805
6
6
5
9
8
7
D8808
D8807
HEATER
CN8614
TO C BOARD
CN7300
+135V
VCC
+
-
2
3
COMPARATOR IC8101
1
4
+
-
7
8
5
6
VCC
3
1
4
2
3
H OUT
Q8804
Q8804
+8
+
-
2
3
COMPARATOR IC8102
1
4
+
-
7
8
5
6
VCC
PIN OUT
Q8803
Q8120
Q8807
Q8100,Q8102
Q8136,Q8137
+
-
2
3
COMPARATOR IC8103
1
4
+
-
7
8
5
6
VCC
2
DF DRIVE
M PIN
CONTROL
Q8805
H LIN
Q8806
BUFFER
Q8125, Q8126
HV
13
11
1
2
4
3
DF DRIVE
Q8851
H -
5
T8852
DFT
HV
TO PICTURE TUBE
(C BOARD)
- 26 -
5-2. CIRCUIT BOARD LOCATION
5-3. 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.
electrolytic types.
•
Indication of resistance, which does not have one for
rating electrical power, is as follows.
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
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.
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.
tolerences.
•
: B + bus.
•
: 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
5-1. BLOCK DIAGRAMS (3)
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
A(17)
CN0001
IC0002
MICRO CONTROLLER
M ( )
MICRO PROCESSOR
IC0001
NVM MEMORY
7
8
SCL
6
5
9
SDA
28
24
LED
LED
76
10
SIRCS
SIRCS
AGC
AGC
22
40
MODE 3
AGC
29
25
OVP
80
11
GROUP DELAY
24
23
OCP
OVP/OCP
59
15
COINCIDENCE
GROUP DELAY
17
13
MAIN RY
OCP FLAG
16
14
DGC RY
COINCIDENCE
46
20
B TEXT
B TEXT
47
19
G TEXT
G TEXT
25
22
RESET AUDIO
RESET AUDIO
48
18
R TEXT
R TEXT
13
36
AUDIO MUTE
AUDIO MUTE
COR*
12
FS 100
52 VDS
4
35
MODE 1
MODE 1
AV LINK
2
34
MODE 2
MODE 2
18
37
LINE MUTE
MUTE LINE
53
17
H SYNC
H SYNC
55
16
V SYNC
V SYNC
32
21
TXT VIDEO
TXT VIDEO
96
38
RESET 100
RESET 100
5
39
KEY
KEY
97
7
12C DISABLE
12C DISABLE
82 SDA 0
81 SCL 0
71
70
6
MODE 3 (1)
94
6
MODE 3 (2)
93
MAIN RY
DGC RY
43
MAIN RELAY DRIVER Q0002
DEGAUSING COIL RELAY
DRIVER Q0003
12C SWITCH
Q0007, Q0008
12C SWITCH
Q0009, Q0010
49
A(0)
40
A(1)
39
A(2)
38
A(3)
27
A(4)
26
A(5)
23
A(6)
15
A(7)
67
A(8)
66
A(9)
65
A(10)
64
A(11)
37
A(12)
36
A(13)
8
A(14)
33
A(15)
51
A(16)
50
A(17)
9
RD*
10
WR*
85
D(0)
86
D(1)
87
D(2)
88
D(3)
89
D(4)
90
D(5)
91
D(6)
92
D(7)
IC0005
SRAM
(TELETEXT PAGES STORAGE)
20
19
18
17
16
15
14
13
3
2
31
1
12
4
11
7
10
9
32
5
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
21
22
23
25
26
27
28
29
RESET AND SWITCH
Q0012, Q0013
-
+
IC0004
COMPARATOR
(AV-LINK CIRCUIT)
1
+
-
7
8
5
IC0003
RESET CIRCUIT
3
TO A BOARD
CN0101
DISABLE
DRIVER
Q0011
5
6
4
3
2
X0001
D0001
84
83
98
73
NVM WL*
RESET
SCL 1
SDA 1
XTAL OUT
XTAL IN
78
AV LINK OUT
79
AV LINK IN
VM
5
4
QP (+)
QP (-)
4
7
8
2
3
VM
VM
1
QP (+)
QP (+)
QP (-)
QP (-)
VM ( )
VELOCITY
MODULATION
CN7444
QP-
QP+
VM
NECK ASSY
VM BUFFER
Q7408, Q7409
VM AMPLIFIER
BUFFER
Q7400, Q7401
VM BUFFER
Q7402
VM BUFFER
Q7404
VM AMPLIFIER
BUFFER
Q7405
VM AMPLIFIER
BUFFER
Q7403
VM OUT
Q7406
VM OUT
Q7407
1
CN7442
TO A BOARD
CN7000
VM Board
C Board
A Board
M Board
G Board
F5 Board
D Board
H6 Board
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
- 27 -
~ A Board Schematic Diagram [ Audio Amp & Scart Connector ] Page 1/7 ~
F
2
5
3
4
1
MICRO
A 2/6
3/6
6/6
3/6
6/6
SCART
AUDIO
AUDIO
A 2/6
VIDEO
A 2/6
3/6
5/6
3/6
5/6
MUTE
A 2/6
A
1/7 AUDIO AMP & SCART CONNECTOR
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
A . . - 2 8 / 3 2 C S 7 0
X X
+9V REG
+5V REG
+3.3V REG
+1.8V REG
5A
6
4502
IF
AG
C
4P
F5
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 -
~ A Board Schematic Diagram [ Audio Processor ] Page 2/7 ~
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
A . . - 2 8 / 3 2 C S 7 0
MICRO
A 1/6
3/6
6/6
3/6
6/6
VIDEO
A 1/6
3/6
5/6
3/6
5/6
MUTE
A 1/6
YUV 100
A 3/6
4/6
4/6
A
2/7 AUDIO PROCESSOR
M S P 3 4 1 1 G - Q A - B 1 1
SCART
AUDIO
AUDIO
A 1/6
*
*
4501
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