DOWNLOAD Sony KD-28DX40U Service Manual ↓ Size: 8.25 MB | Pages: 62 in PDF or view online for FREE

Model
KD-28DX40U
Pages
62
Size
8.25 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kd-28dx40u.pdf
Date
PREV: Sony KV-29FX66E (serv.man2) Service Manual

Sony KD-28DX40U Service Manual ▷ View online

- 25 -
5-1.
 BLOCK DIA
GRAMS (2)
LOWB
5
6
4
C
N
001
J4
0
1
(1
/2
)
77
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- 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
D
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
606
VD
VG(
H
)
VS
HP
+B
HV
C
N
508
XTAL OUT
RE
D
NVM WP
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
1
2
1
3
DG
C
DG
C
DG
C
DG
C
CHE
C
K
DGC CHE
CK
C
N
603
C
N
602
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(L)
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
40
AUDIO MUTE
5
AUD OUT
78
+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
3
/O
U
T
 W
H-DRIV
E
Q5
3
5
68
IC4
0
1
AV LINK
+
5
V STBY
69
R0
56
A1
0
B1
0
1
2
3
6
G0
57
B0
58
IK
55
GRE
E
N
BLUE
IK
EWD
17
VD-
18
VD
+
19
AB
L
54
74
T
O
 C BO
ARD
C
N
703
7
C
N
003
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
28
CVBS
2
/
CVBS
Y
2
3
AGC
53
B2/U
IN
1
MODE
1
80
MODE
2
52
G2/YIN
51
R2/V
IN
38
-/
C
4
50
INSSW
2
32
CVB
S
1
37
-/CVBS4
Y
4
65
RESET
45
AUDIO 1
49
AUDIO 3
34
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
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
14
OUT/L
12
/O
U
T
 R
9
STBY/
MW
6
/IN W
L OUT
L IN
R IN
R OUT
T
O
 H2
 BO
ARD
C
N
908
CN12
0
0
1
CN12
0
2
CN12
0
3
WOOFER
WFR R IN
WFR L IN
1
2
4
MUTE
7
SDA
CS
SC
L
AGC
3
IC2
0
1
MSP3410D-PP-
B
4
SC
1
 O
U
T 
R
37
SC1 OUT L
36
63
XTAL OUT
62
XTAL IN
47
SC3 IN R
46
SC3 IN L
31
DA
CM
 S
U
B
/C
3
35
KEY
2
LE
D
6
SIRCS
67
C
N
405
7
6
4
KEY
LED
SIRC
S
T
O
 H8
 BO
ARD
C
N
7
150
A1
B1
A3
B3
SC
1
 O
U
T
 L
SC1 OUT R
SC
2
 O
U
T
 L
SC2 OUT R
SC
2
 O
U
T 
R
34
SC2 OUT L
33
R
AUDIO
J4
0
2
L
CVBS/Y
KEY
R
A1
9
VIDEO
C
N
406
T
O
 H2
 BO
ARD
C
N
906
1
4
6
8
9
6
5
3
2
C
CS
4
6
7
TO
 F3 
B
O
A
R
D
C
N
3
603
T
O
 D2
 BO
ARD
CN88
0
1
SW
SMART
C
N
512
2
6
DEF SW
75
T
O
 D3
 BO
ARD
C
N
2
803
VO
U
T
AC IN
4
8
T
O
 B 
BO
ARD
C
N
8
302
AC IN
T
O
 VM
 BO
ARD
C
N
1
701
VMOU
T
C
N
510
C
N
501
- 26 -
5-1.
 BLOCK DIA
GRAMS (3)
R DIGITAL
B1
A
1
 ( 
   
   
 )
D
IG
ITA
L FR
O
N
T
END PRO
CESSI
NG
C
N
4
101
T
O
 A 
BO
ARD
C
N
301
3.
3
V
RIG
H
T
LEFT
A1
A3
FBLK
A4
CVBS
A5
B
A6
G
/C
A7
R/Y
A2
2
S
CL (TV)
B2
2
S
D
A
 (
T
V
)
A2
4
PTEN
A2
5
F
E RESET
B2
5
F
E LOCK
A2
6
S
C
L
 (
N
)
B2
6
S
D
A
 (
N
)
A2
8
PT CLK
B
2
8
P
T SYN
C
A2
9
T
S 6
B2
9
T
S 7
A3
0
T
S 4
B3
0
T
S 5
A3
1
T
S 2
B3
1
T
S 3
A3
2
T
S 0
B3
2
T
S 1
LEVEL SHIFTER
Q
4
104
LEVEL SHIFTER
Q
4
105
13
12
11
10
9
8
CONT
 A
CONT
 D
I/PD
O/
P
D
O/
P
D
I/PD
2
3
5
6
O/PA
O/PA
CONT
 B
CONT
 C
Q
4
101
Q
4
102
IC
4
101
P
L
L 12C
 5W
2
3
- (1)
+ (1)
7
6
5
OUT
 (
2
)
- (2)
+ (2)
R
Y
4601
AC IN
AC IN
3
2
T
4
601
9
10
11
4
7
8
1
12
13
14
15
3
8
6
IC
4
102
RTC
IC
4
608
COMPARATO
R
1
IC
4
603
E
RRO
R A
M
P
L
IF
IE
R
G
IC
4
606
+9V
 RE
G
U
LA
T
O
R
I
IC
4
605
+5V
 RE
G
U
LA
T
O
R
I
IC
4
604
+5V
 RE
G
U
LA
T
O
R
I
IC
4
607
+
3
.3
V
 R
E
GU
L
A
TOR
I
LE
D DRI
V
E
R
Q
4
103
RESET
VD
D
SCL
LEVEL SHIFTER
Q
4
107
TU4
1
0
1
5
SDA
LEVEL SHIFTER
Q
4
106
5V
1
2
9
8
3
IC
4
601
PO
W
E
R
 SU
PPL
Y
RED
/Y
3
1
C
N
4
103
T
O
 N BO
ARD
T
O
 A 
BO
ARD
C
N
601
2
1
2
4
GREEN
/U
BLUE/V
FBLK
L DIGITAL
C
N
4
104
5
Y DIGITAL/CVBS A
6
C DIGITAL
7
QSS
8
AM
13
AG
C
15
CVBS A/D
1
2
3
4
5
Y 1
Y 0
Z 1
Z
Z 0
15
14
12
11
Y
X
X 0
A (X)
IC
4
104
A/
D VI
DEO
 SWI
T
C
H
10
9
B (Y)
C (Z
)
1
14
15
16
TU4
1
0
2
AG
C
AG
C
AG
C
INVERTER
Q
4
118
INVERTER
Q
4
120
INVERTER
Q
4
119
3
4
5
X
Y
Z
IC
4
1
0
5
  PO
RT
 EXPANDER
C
N
4
601
IC
4
602
P
H
OTO C
O
U
P
L
E
R
+5
V
+5
V
+9
V
+3.
3
V
T
O
 B 
BO
ARD
CN83
0
1
VIDE
O
J7
0
1
T
O
 A 
BO
ARD
C
N
003
IC7
0
1
R.
G.
B
. DRI
V
E
6
5
1
3
G IN
C
N
703
C
 ( 
   
 )
R
.G.B
. OU
T
7
2
1
B IN
R IN
IK
NS
 CORRE
CT
1
2
3
5
9
8
7
IC18
0
1
R
O
TATIO
N
 AM
P
1
2
3
7
6
10
8
9
3
6
CN18
0
1
ROT
 (+
)
RO
T
 (-)
C
N
706
C
N
707
1
1
H2
G2
PI
CT
URE  T
U
BE
TO
 R
O
TA
TI
O
N
 C
O
IL
C
N
8
302
T
O
 A1
 BO
ARD
C
N
4
103
IC83
0
1
YU
V SWITC
H
1
2
Y IN
C
N
8
301
B
 ( 
  
  
  
 )
3
4
U IN
V IN
FBLK IN
1
2
3
4
11
10
9
6
5
3
2
1
U IN
T
O
 A 
BO
ARD
C
N
002
7
V IN
Y IN
Y O
U
T
U OUT
V O
U
T
14
13
12
15
5
Y
X
X 1
X 0
A
B
C
Y 1
Y 0
Z 1
Z
Z 0
BUFFER
Q8303
,8306
BUFFER
Q8302
,8305
BUFFER
Q8304
,8307
INVERTER
Q
8
301
Y,
 U,
 V,
 SWI
T
CHI
NG
9
CN880
1
T
O
 A 
BO
ARD
CN51
2
SWI
T
C
H
Q8802, 8803
IC8801
SMAR
T MO
D
E
DEFLECTION
Q8801
HD
Y
-
SWITCH
SMA
R
T
2
8
+1
5
V
D2 (            )
SM
ART
 M
O
DE 
DEF
L
ECT
IO
N
1
CN880
2
T
O
 D3
 BO
ARD
CN280
1
1
3
H- DY+
C
N
2
802
D
3
 ( 
  
   
 )
4
:3
 SWI
T
CHI
NG
4
5
H- DY-
H- DY-
V- D
Y
-
Q
2
8
0
1
,2802
2H
- D
Y
+
6
V- DY+
T
O
 A 
BO
ARD
C
N
501
1
3
H- DY+
C
N
2
803
4
5
H- DY-
H- DY-
V- D
Y
-
2H
- D
Y
+
6
V- DY+
C
N
2
801
T
O
 D2
 BO
ARD
C
N
8
802
T
2
801
+8
V
6
8
10
5
4
2
1
R
Y
2801
DY ASSY
V DY
V- DY+
V- D
Y
-
H DY
H- DY+
H- DY-
SW
6
7
2
IC7
1
5
0
RECEI
V
E
R
2
1
LE
D
TO
 A BO
ARD
C
N
405
H8 ( 
   
 )
IR
R
E
C
EI
VER
C
N
7150
S
IRCS
+
5
V ST
BY
ST
BY 5
V
- 27 -
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
VM Board
C Board
A Board
H2 Board
A1 Board
F3 Board
D3 Board
H8 Board
F6 Board
D2 Board
N Board
B Board
- 28 -
~
A Board IC Voltage Table
~
~
A Board Semiconductor Voltage Table ~
o
N
f
e
R
o
N
n
i
P
)
V
(
e
g
a
t
l
o
V
o
N
f
e
R
o
N
n
i
P
)
V
(
e
g
a
t
l
o
V
1
0
0
C
I
1
0
1
0
0
C
I
7
6
8
.
4
2
2
.
3
8
6
4
.
0
3
9
.
2
9
6
0
5
0
0
7
0
6
0
.
2
1
7
0
8
3
.
2
2
7
0
9
0
.
8
3
7
1
.
7
0
1
0
.
5
4
7
0
.
5
2
1
0
5
7
1
.
8
3
1
0
6
7
5
.
3
-
4
1
0
.
4
7
7
0
6
1
4
.
1
8
7
2
.
3
7
1
5
.
1
9
7
2
.
3
8
1
0
0
8
0
9
1
0
1
0
5
C
I
1
3
.
0
0
2
8
.
3
3
6
.
2
1
-
1
2
8
.
3
5
2
.
0
2
2
0
.
5
6
9
.
3
1
6
2
0
7
3
.
0
8
2
5
.
3
1
3
5
C
I
1
4
.
1
9
2
6
.
3
2
3
.
2
0
3
9
.
1
3
8
.
1
1
3
3
.
0
5
4
.
2
2
3
6
.
3
6
6
.
1
4
3
9
.
1
7
4
.
6
5
3
4
.
1
1
0
6
C
I
1
4
.
0
8
-
6
3
9
.
3
2
5
.
0
8
-
8
3
8
.
1
3
2
.
0
8
-
0
4
3
.
3
4
2
.
0
8
-
2
4
3
.
3
5
5
.
1
8
-
3
4
4
.
1
6
6
.
1
8
-
5
4
0
7
8
.
7
7
-
6
4
0
9
8
.
1
8
-
7
4
6
.
3
0
1
6
7
-
8
4
8
.
2
1
1
9
.
1
8
-
9
4
3
.
2
2
1
4
.
9
7
-
0
5
2
.
0
4
1
5
.
6
1
1
5
5
.
2
5
1
1
1
2
5
5
.
2
6
1
4
.
4
1
3
5
5
.
2
8
1
4
.
6
8
4
5
1
.
2
1
0
2
1
C
I
1
1
1
5
5
2
.
5
3
9
.
4
6
5
0
.
3
5
0
7
5
1
.
3
6
0
8
5
1
.
3
7
3
.
1
1
9
5
2
.
3
9
3
.
0
2
6
0
0
1
0
3
6
0
2
1
0
4
6
0
4
1
5
3
.
1
1
5
6
0
f
e
R
)
e
(
)
b
(
)
c
(
f
e
R
)
e
(
)
b
(
)
c
(
3
1
0
Q
0
7
.
0
0
4
0
6
Q
0
0
5
.
2
6
1
0
Q
0
0
3
.
3
8
0
6
Q
0
0
6
.
5
2
1
2
Q
0
7
.
0
0
9
0
6
Q
6
.
5
6
.
5
0
1
0
4
Q
8
.
4
2
.
4
8
.
1
1
1
4
Q
1
.
1
7
.
1
2
.
4
f
e
R
)
s
(
)
g
(
)
d
(
1
0
6
Q
6
.
5
8
.
4
3
.
5
6
0
6
Q
9
.
0
1
5
.
4
1
7
.
6
8
2
0
6
Q
2
.
4
1
1
.
5
8
7
0
6
Q
4
.
2
8
-
9
.
9
7
-
9
.
0
1
3
0
6
Q
8
8
0
5
3
5
Q
0
5
.
2
2
.
5
9
1.83 Vp-p (V)
20us/div
TP7
20us/div
1.88 Vp-p (H)
TP1
5ms/div
TP8
488 mVp-p (V)
20us/div
1.86 Vp-p (H)
TP3
20us/div
1.84 Vp-p (H)
TP2
20us/div
6.0 Vp-p (H)
TP4
20us/div
5.4 Vp-p (H)
TP5
20us/div
TP6
16.8 Vp-p (H)
5ms/div
50.8 Vp-p (V)
TP11
5ms/div
49.8 Vp-p (V)
TP9
20us/div
TP10
1.06 kVp-p (H)
~
A Board Waveforms ~
f
e
R
U
0
4
X
D
8
2
U
0
4
X
D
2
3
2
2
5
C
F
U
7
2
.
0
-
6
3
5
C
F
U
2
8
.
0
F
U
1
9
3
5
C
F
U
1
F
U
2
.
2
2
4
5
C
F
P
0
3
3
F
U
1
0
0
.
0
7
4
5
C
F
U
2
8
.
0
F
U
8
6
.
0
5
5
5
C
F
P
0
0
0
2
2
F
P
0
0
0
9
1
1
0
1
R
J
-
0
2
2
0
R
K
7
4
K
9
3
3
5
0
R
K
5
1
K
2
8
5
5
4
R
0
H
U
7
.
4
3
1
5
R
K
0
2
2
-
6
1
5
R
K
6
5
K
7
4
7
1
5
R
K
8
1
K
2
2
8
1
5
R
K
7
.
2
K
8
.
6
1
2
5
R
K
0
2
2
-
4
3
5
R
K
0
0
1
K
0
9
3
5
3
5
R
K
0
2
1
K
0
2
2
0
4
5
R
3
3
7
4
6
4
5
R
0
2
8
K
1
8
6
5
R
0
8
6
0
2
8
3
8
5
R
K
0
1
K
5
1
0
0
6
R
0
9
3
0
2
1
1
0
6
R
0
7
4
0
8
6
3
3
5
T
R
E
M
R
O
F
S
N
A
R
T
2
1
-
0
8
9
-
3
3
4
-
1
R
E
M
R
O
F
S
N
A
R
T
1
1
-
6
0
3
-
9
2
4
-
1
~
A Board Difference Table
~
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