F7 Board Schematic; D3 Board Schematic; F3 Board Schematic; H7 Board Schematic - Sony TRINITRON KD-28DX50U Service Manual

A B C
1
2
H7..-28/32DX50
D908
MTZJ-9.1
3
R912
R911
1.5k R913 R901
5
1/4W 6.8k 3.3k
1/4W 1/4W
S902 S901
4
H7
Y/C AND FRONT A/V INPUT
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
5
~ H7 Board Schematic Diagram [ Y/C and Front AV Input ] ~
6
7
8
CN3601
2P
AC IN
AC IN
9
CN3602
1P
10
~ F3 Board Schematic Diagram [ AC Input Fuse ] ~
11
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D E F
TO A BOARD (4/4) TO A BOARD (4/4)
CN406 CN1200
CN906 CN908
9P 6P
WHT WHT
C906
D903 1
50V
HZS9.1NB2
C907
1 R906
D904
XX
50V
RD6.8ESB2
C902
D902 XX
HZS9.1NB2
R909 C909
470k 100p R903
R902 R914
1/4W
120
15k 10k
1/4W
L903
1/4W
1/4W
10uH
L902
R915
10uH
C908
120
C900 R905
100p
1/4W
XX
D905 XX
RD6.8ESB2
S900
C901
R910
L900
XX
R917 470k 5
R918
1/4W
100
100
1/4W
1/4W
L904 C911
XX
1mH
J900
J901
F3..-28/32DX50
T3603
XX
JW3602
TO LIGHTENING
DISCHARGE
FH3601 C3602 C3603
VD3601
0.1
0.1
1
275V
275V
F3601 PP
PP
2
5A
250V
R3601
T3602
1M
1/2W
TO LIGHTENING
RC
DISCHARGE
JW3604
XX
1
C3601
4700p
250V
E
F3
AC INPUT, FUSE
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
G H I
C903
XX
R904
120
1/4W
R916
120
1/4W
L901
5
C912
XX
T3604
XX
XX
JW3601
XX
CN3603
T3601
2P
1 AC OUT TO F7 BOARD
CN7602
2 AC OUT
JW3603
XX
- 38 -
J K L M
F7..-28/32DX50
F7
AC Input
CN7601
2P CN7602
2P
AC OUT 2
TO A BOARD (1/4)
1 AC IN
CN606
S7601
AC OUT 1
AC IN
2
COMPONENTS MARKED AS XX ARE
NOT FITTED ON THIS MODEL
~ F7 Board Schematic Diagram [ AC Input ] ~
D3..-28/32DX50
R2801
1/4W
+8v
C2802
22
50V
D2801
1SS133
RY2801
1 10
2
8
4
Q2801
2SC2785-HFE 5 6
RELAY SWITCH
T2801
100uH
D3
4:3 SWITCHING
COMPONENTS MARKED AS XX ARE NOT FITTED ON THIS MODEL
~ D3 Board Schematic Diagram [ 4:3 Switching ] ~
N
TO F3 BOARD
CN3603
Q2802
2SC2785-HFE
RELAY SWITCH
2.2k
CN2801
3P
RED
R2802
1 SW
2.2k
TO D2 BOARD
1/4W
2 GND
CN8802
3 8V
CN2802
DY
6P
1 H-DY+
2 H-DY+
3 H-DY-
4 H-DY-
5 V-DY-
V-DY+
6
H.DY H.DY V.DY V.DY
CN2803
6P
1 H-DY+
2 H-DY+
3 H-DY-
TO A BOARD (2/4)
CN501
H-DY-
4
5 V-DY-
6 V-DY+