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Model
KD-28DX200U
Pages
124
Size
45.45 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kd-28dx200u.pdf
Date
PREV: Sony KV-28FQ86B (serv.man3) Service Manual

Sony KD-28DX200U Service Manual ▷ View online

- 37 -
5-1.  BLOCK DIAGRAMS (3)
PICTURE  TUBE
CN5400
R DRIVE
TO D2 BOARD
(T6800)
R
G
B
1
IC5300
VIDEO OUT (RED)
8
9
10
TO D2 BOARD
FV (T6800)
H1
5
H1
5
CN5634
TO D1 BOARD
CN8614
FV
J5375
R, G, B OUT
C 
(
   
 
)
8
3
1
8
1
3
8
1
3
IC5350
VIDEO OUT (BLUE)
IC5325
VIDEO OUT (GREEN)
VB
VB
VB
BUFFERS
Q5301
Q5326
Q5352
B
R
G
5
3
B DRIVE
G DRIVE
TO A BOARD
CN1804
HORIZONTAL OUTPUT STAGE
IC8801
UPC
16
28
14
29
CN8614
8
5
HEATER
X-RAY
HD2 OUT
HD1 OUT
LIN OUT
MP OUT
BUFFER
Q8010
Q8011
BUFFER
Q8014
Q8015
BUFFER
Q8503
Q8504
AMP
Q8501
Q8502
SWITCH
Q8808
Q8809
HDT
T8101
SWITCH
Q8100
LOWER
H-OUT
Q8103
UPPER
H-OUT
Q8102
SWITCH
Q8101
TO C BOARD
CN5634
D1 (     )
IC8501
OPERATIONAL AMP
DY ASSY
HORIZONTAL
DEFLECTION
26
HDT
T8100
HDT
T8202
BUFFER
Q8507
Q8508
12
6
2
7
AMP
Q8806
Q8807
LIN PARA
HD1 DELAY
CN8500
TO A BOARD
CN1805
CN8612
1
3
CN8611
5
6
1
2
3
4
V-
V+
H+
TO A BOARD
CN1802
DYNAMIC
FOCUS
T8901
D2 (        )
14
G2
16
FV
1
18
19
12
15
13
HV
17
8
9
7
10
5
6
4
3
11
HV OVERSHOOT
PROJECT
Q6816, Q6817
SS RESET
Q6814,
Q6813
ABL
PROTECT
Q6807
6
1
3
DYNAMIC
FOCUS
Q8918
5
7
6
UNDER
VOLTAGE
PROTECT
Q6808
4
3
200V
1
3
2
7
5
6
1
2
3
BUFFER
Q6803
16
12
1
9
15
2
200V
Q6804,
Q6805
Q8909
AFC PULSE
DETECT
Q6801,
Q6802, Q6803
AFC
PULSE
TO
A BOARD
CN1903
CN6801
1/2
V SENSE
F/B
VG(H)
VS
VG(L)
IC6800
DF DRIVE
ABL
8
7
6
IC6801
COMPARATOR
IC6807
IC6803
CATHODE
REF
IC6802
T6800
4
5
HOP OV
HPROT
CN6801
2/2
TO
A BOARD
CN1903
DYNAMIC PICTURE
STABILISING CIRCUIT
VOLTAGE
REF
OVP
1
5
POWER
S2601
CN2603
CN2601
1
2
F3 (          )
POWER SWITCH,
SIRCS RECEIVER AND
STANDBY LED INDICATOR
TO
POWER CORD
TO G BOARD
CN6001
AC OUT
AC OUT
F2601
5A
3
4
CN2151
SWITCH
Q2150, Q2151
IC2150
TO H BOARD
CN301
SIRCS
RESP
LED
+5V
OUT
VCC
D2150
H (     )
15
20
21
14
17
11
AV-IN
RESET
BUTTON
VOL+
RESP LED
AV-LINK
10
9
8
22
23
24
28
29
6
VOL-
PROG+
PROG-
INT
SCL
SDA
OSC_OUT
OSC_IN
RESET
SIRCS
3
4
RESP LED
SIRCS
1
2
3
4
5
6
AV-IN
RESET
VOL+
VOL-
PROG+
PROG-
1
3
5
6
7
X300
SCL_3.3
AV-LINK
RESET
AV_INT
SDA_3.3
D302
CN302
IC300
AV LINK
CN301
CN300
TO F3 BOARD
CN2151
(KD-32DX200)
TO F8 BOARD
CN2251
(KD-28DX200)
TO H3 BOARD
CN909
(KD-32DX200)
TO H8 BOARD
CN809
(KD-28DX200)
3.3V
AV LINK
PROCESSOR
TO A BOARD
CN1706
(
   
 
   )
1
5
7
9
11
AV4 LEFT IN
AV4 RIGHT IN
4
3
2
1
VIDEO
L
R
CN900
CN907
3
J900
HEADPHONE
Y/C
HEADPHONE R OUT
HEADPHONE L OUT
AV4 CHROMA IN
AV3 LUMINANCE IN
H3
FRONT AV INPUT,
HEADPHONE AND
CONTROL SWITCHES
TO A BOARD
CN1701
SWITCHES
S900
S901
S902
S903
S904
S905
1
3
VOL-
PRESET
TO H BOARD
CN300
CN909
VOL+
VIDEO
PROG -
PROG +
2
4
5
6
(
   
 
   )
1
5
7
9
11
AV4 LEFT IN
AV4 RIGHT IN
4
3
2
1
VIDEO
L
R
CN800
CN807
3
J800
HEADPHONE
Y/C
HEADPHONE R OUT
HEADPHONE L OUT
AV4 CHROMA IN
AV3 LUMINANCE IN
H8
FRONT AV INPUT,
HEADPHONE AND
CONTROL SWITCHES
TO A BOARD
CN1701
SWITCHES
S800
S801
S802
S803
S804
S805
1
3
VOL-
PRESET
TO H BOARD
CN300
CN809
VOL+
VIDEO
PROG -
PROG +
2
4
5
6
1
5
POWER
S2701
CN2703
CN2701
1
2
F8 (          )
POWER SWITCH,
SIRCS RECEIVER AND
STANDBY LED INDICATOR
TO
POWER CORD
TO G BOARD
CN6001
AC OUT
AC OUT
F2701
5A
3
4
CN2251
SWITCH
Q2250, Q2251
IC2250
TO H BOARD
CN301
SIRCS
RESP
LED
+5V
OUT
VCC
D2250
- 38 -
5-1.  BLOCK DIAGRAMS (4)
DGC
10
+6V
AU (+)
CN6001
RECTIFIER
D6102
AC IN
AC IN
TO F3 BOARD
CN2603
(KD-32DX200)
TO F8 BOARD
CN2703
(KD-28DX200)
G (    )
POWER
SUPPLY
5
CN6002
CHECK
CHECK
1
2
1
2
3
CN6003
CN6004
PFC
PFC
1
3
CN6008
MAIN RY
DGC RY
TO A BOARD
CN1602
1
2
DGC
DGC
3
1
T6003
4
2
RELAY
SWITCH
Q6103
11
12
13
14
15
16
17
1
2
3
6
8
IC6001
POWER SUPPLY
CONTROLLER
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
SWITCHING
Q6006
MOSFET
SWITCHING
Q6007
1
2
4
3
PH6001
PHOTOCOUPLER
T6002
1
IC6003
REGULATOR
TO A BOARD
CN2000
6
5
CN6006
AU (+)
+135V
+200V
D6004
Q6102
Q6104
Q6103
Q6105
FOR CHECK
+11V
TO G1 BOARD
CN4601
CN6013
1
RELAY KICK
9
3
1
4
2
T6001
1
2
AC OUT
AC OUT
CN6007
TO G1 BOARD
CN4600
RECTIFIER
D6015
18
RECTIFIER
D6016
RECTIFIER
D6010
7
1
3
1
T6101
4
2
9
7
8
RECTIFIER
D6014
2
G1 
(
   
     
)
T4601
TRANSFORMER
1
6
+9V
TO A BOARD
CN1603
RELAY KICK VCC
CN4601
DIGITAL POWER SUPPLY AND
TIMER RECORD FUNCTION
15
14
1
8
4
3
16
PROTECTOR
MODULE
PS4603
PROTECTOR
MODULE
PS4605
9
10
PROTECTOR
MODULE
PS4604
IC4602
12V REGULATOR
O
C
11
IC4604
9V REGULATOR
O
I
1
2
5
IC4601
OPTO-COUPLER
IC4600
TIMER RECORD
3
8
9
2
1
D4600
BRIDGE
RECIFIER
9
8
2
ACT PWR RELAY
CN4602
(1/2)
SWITCH
Q4601
Q4600
3
1
STBY (+6V)
+7V
+5V
+33V
+23V
+12V
TO A BOARD
CN1604
TO G BOARD
CN6013
CN4602
(2/2)
CN4603
RY4601
AC IN
AC IN
CN4600
TO A BOARD
CN1604
TO G BOARD
CN6007
1
2
10
7
M2 (      )
100
97
11
12
5
121
7
8
105
102
9
103
37
36
10
34
35
33
26
24
27
25
23
28
P2.14
P6.5
P6.2
P2.8 INT. COL
P2.15 AVL INT
CVBSIA
BLANK/CORBLA
P2.10
P2.11 PROT
P2.12 AC ON/OFF
V SYNC
H SYNC
P2.13 VIPER WRITE
P5.0
AGC DEFEAT P3.2
RESET AUDIO P3.7
38
39
29
22
40
19
17
18
P4.3/A19
66
62
56
51
48
45
50
49
IC103
MICRO CONTROLLER
UDQM
MEMCLK
CLKEN
30
43
58
57
63
67
72
59
65
71
70
64
99
89
88
55
113
112
79
90
98
76
81
80
114
78
124
46
47
IC101
TO
BOARD A
CN1000
CN100
(1/2)
1
4
6
7
8
10
17
20
21
22
26
28
33
40
35
DISABLE
KEY2/SCL3.3
KEY1/SCL3.3
INT-COL
RESET
AVL-INT
CVBS IN  (TXT)
TXT BLK
RESET
TXTB
PROT
AC-ON/OFF
VP100
HP100
P2(13)
CS DISABLE
4
5
2
10
7
11
45
47
44
50
48
51
13
39
53
37
38
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
DQ7
DQM
CLK
CKE
A0
A1
A2
CLKINB
IC105
16
15
35
20
21
17
31
32
33
34
22
24
25
26
29
30
23
IC104
IC BUS
EPROM
8
42
15
17
31
25
19
27
18
20
16
26
22
28
32
23
30
14
12
Q7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q8
Q9
Q10
Q11
Q12
Q13
Q14
Q15
NC
/E1
/G
IC107
OTP EPROM
3
2
44
40
39
38
35
5
4
43
42
41
10
9
8
7
6
11
21
29
18
37
36
5
6
7
CN104
CN100
(2/2)
TO
BOARD A
CN1000
5
15
19
23
24
25
27
39
3
4
5
RXDO
TXDO
BOOT
AUDIO-MUTE
TXTR
TXTG
ST.BY
TXTB
RESET 100
RESET AUDIO
MS SHUT DOWN
AGC-MON
AGC-DEFEAT
WP
SCL1
SDA1
RXDO
TXDO
A3
A4
A5
A6
A7
A8
A9
A10
A11
BA0/A12
BA1/A13
/RAS
/CAS
LDQM
/WE
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(8)
D(9)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
D(7)
D(7)
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A19
A18
A17
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(19)
A(18)
A(17)
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(19)
A(18)
A(17)
P4.2/A18
P4.1/A17
P4.3/A16
A15/CAS
A14/RAS
RESET 100 P3.6
B
STDBY P3.4
AUDIO MUTE P3.5
3.12
P6.3
P6.4
P3.11
P3.10
G
R
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(8)
D(9)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
D0
D1
D2
D3
D4
D5
D6
D8
D9
D10
D11
D12
D13
D14
D15
/WE
LDQM
CSROM
RD
MICRO PROCESSOR
AND TEXT DECODER
OUT
NOT CONNECTED
B
G
R
- 39 -
5-1.  BLOCK DIAGRAMS (5)
5-2.  CIRCUIT BOARD LOCATION
5-3.  SCHEMATIC DIAGRAMS AND 
         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
•
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  +  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.
Note :
The components identified by shading
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
J3 (      )
36
25
32
29
18
60
2
38
33
26
39
19
41
RTV
(R2)AV1-R
LTV
(L2)AV1-L
IC140
2
9
58
34
27
37
30
TO A BOARD
CN1001
3
62
61
57
50
48
AV3(4)
V-OUT(6)
V/Y-IN(7)
F BLK
Y MAIN IN
AV3
AV2
CN8806
AV1
45
43
40
29
24
23
22
37
36
32
28
16
15
11
8
2
1
R-TV(1)
R-IN(2)
MODE-1(1)
GREEN-IN(2)
RED-IN(3)
BLK(4)
BLUE-AV2
GREEN-AV2
RED-AV2
FBLK-AV2
R-OUT(9)
R-IN(10)
L-OUT(11)
MODE-2(2)
ROT+
R-OUT(5)
L-OUT(7)
L-IN(8)
MODE-3
AV SCART I/O
SWITCHING AND
SOCKETS
3
6
7
19
20
L-TV(3)
L-IN(4)
BLUE-IN(7)
V-OUT(2)
V-IN(3)
27
41
L-IN(12)
AV3(3)
R-IN(6)
AV LINK
44
52
7
9
10
16
17
18
19
21
23
24
33
34
36
39
35
40
41
42
45
46
50
U MAIN IN
V MAIN IN
D-CVBS IN
AV4-C IN
ATV-CV
IN
AV4-Y IN
AV LINK
SDA
SCL
HP-R OUT
HP-L OUT
AV4-R IN
11
CVBS TXT
AV4-L IN
DTV-R IN
DTV-L IN
TV-R IN
TV-L IN
MAIN-R IN
MAIN-L IN
AM
CN8805
43
54
40
35
28
20
8
7
6
14
4
3
15
2
12
11
10
5
2
1
2
3
5
13
14
IC8810
RGB SWITCH
IC8806
MAIN AUDIO/VIDEO SWITCH
AMP
Q9213
(RED)
AMP
Q9212
(GREEN)
AMP
Q9211
(BLUE)
IC8809
CVBS SWITCH
AMP
Q8823
10
15
4
14
15
62
64
15
14
SWITCH
Q8835
49
51
56
5
2
13
6
3
7
6
3
1
24
23
IC8800
PORT EXPANDER
IC8101
HP OUT
J8800
L IN
R IN
R OUT
L OUT
DA2
SWO
SDA
SCL
BLK-OUT
DA4
DA1
V-IN-2-R
V-IN-2-G
V-IN-2-B
BLK-2
V-IN-1-R
V-IN-1-G
V-IN-1-B
BLK-1
SEL
V-IN-1-
B
(C3)AV4-C
HP L OUT3
HP R OUT3
SDA
SCL
TV
SUB TV
(CVIN1)
AV3-V(Y2)
(C2)AV3-C
MODE1
TV OUT(AV1)
(RO1) MAIN-R
OUT
AV1-V(CVIN2)
(RO5)AV4-R
(L5)AV4-L
MODE2
(LO1)MAIN-L OUT
(CVO2)VIDEO OUT
AV3-V(Y3)
(RO2)AV2-R OUT
(R2)AV1-R
(LO2)AV2-L
(L3)AV2-L
MODE3
AV2 OUT(CVO1)
AV2-V(Y1)
(R4)AV3-R
(L4)AV3-L
(
R1)SUBTU-R
(L1)SUBTU-L
SW-CVBS
DCVBS
AV1CVBS
AV-SW CONT
ACVBS
ACVBS
DCVBS
MODE-3(3)
PINAV3
9
VM Board
C Board
A Board
M2 Board
G Board
H Board
    F3 Board
(KD-32DX200)
    F8 Board
(KD-28DX200)
D2 Board
D1 Board
N Board
J3 Board
G1 Board
B5 Board
    H3 Board
(KD-32DX200)
    H8 Board
(KD-28DX200)
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
- 40 -
~ A Printed Wiring Board Conductor side A ~
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