Sony KV-28DS20U Service Manual page 33

BLOCK DIAGRAMS 2
D
[ DEFLECTION AND POWER SUPPLY ]
CN1803
3
ROT COIL
TO VM BOARD 4
V-DRIVE SWITCH
CN1801
Q501
5
V+ SAW D504
D505
CN901
1
KEY
TO H BOARD D507
SWITCH SWITCH
CN5901 3
RESPL Q502
Q503
CN902
3
ROT COIL
V- OUT 48
E/W 5
V- OUT
46
5 -
PIN OUT
6 7
H DRIVE Q800, 801
5 +
V SYNC 45
IC800
PIN CORRECTION
HFBP 7
EHT
ABL 43
DGC RELAY 42
T804
HDT
9
PROT SWITCH H DRIVE
TO A (2/2)
D618 Q805 Q803
BOARD
PROTECT
AFC 12
CN1
SIRCS 39
SPKRL 13
STBY 38
SPKRR 15
16
SMART SW
IC1201
STBY LED 35
HEADPHONE AMP
R
R
7 1
VM OUT 20
31
MUTE
L L
21 6 3
H/P L
22 MUTE
H/P R
Q1204
R IN 5
23
L IN 28 MUTE
4
Q1203
V IN 24
3
C IN 25 2
Y IN 26 1
D619
PROJECT
+15V
RELAY DRIVE
Q607
3
RY600
CN601
THP600
4
1
IC601
3 3 OPTO-COUPLER
DGC
SOFT START
STBY +5V RELAY DRIVE
Q601
Q611
RY601
D604
CN602 D603
REF
1 AC IN
TO H BOARD MAIN RECT
8
CN5601 AC IN D600
4
4
D601
3
D606
2
D605
6
8 7 6 1
INH F/B OCP C
9 Vcc
B D IN D OUT
3 4 5
IC600
POWER CONTROL
DEFLECTION AND
D ( )
POWER SUPPLY
D607
37
CN801
T803 FBT
3
TO D1 BOARD CN2804
IC500 D810
1 HV
200V RECT HV TO
V OUT
PICTURE TUBE
200V
4 CN802
1 3 5 6 7
+B
DF TO D1 BOARD
135V 2 13
CN 2806
+15V
D803 5 FV TO C BOARD
FV
V BOOST
J701 (G4)
6
+15V
9
D503 12
+15V RECT 8
-15V CN804
7
2
D807 11 200V
D502 TO C BOARD
+135V
-15V RECT H2 6 CN703
L802
L801
CN800
T800 D815
V+ 6
PMT H CENT
V- 5
S801
H- 4
L804
D808 TO D1 BOARD
HLC
H CENT
R825 3 CN3803
H OUT
H+ 2
Q802
1
+9V
D801
H DUMPER
D800
H DUMPER CN1408
L OUT 5
L IN L OUT 4
7
OPEN
R OUT 3
11 R IN R OUT 2
5
IC1200
AUDIO AMP
J1200
L
+5V
R
MUTE SWITCH
Q1201
CN1407
MUTE 4
MUTE SWITCH MUTE SWITCH
TO A2 BOARD
Q1202 Q1200
MUTE SW 3 CN4407
CN1401
VM OUT 4
TO VM BOARD
CN1716
CN1403
SPR
1
SPL
TO D1 BOARD
MUTE 4 CN2202
MUTE SW
3
POWER OFF SWITCH CN805
IC602
ERR-AMP Q605, 606, D617, 625 12
H-
2
2 REG 1 +135V 5 TO D2 BOARD
SMART CORR
CN8801
+33V 7
1 SMART SW
CN903
13
HP R
11
HP L
T601
SRT D609 9
C IN
135V RECT
13 +135V 8 TO H BOARD
Y IN
CN5903
14 3
MPEG/AV3R
+15V
D608 IC606
15 1
MPEG/AV3L
D612 1 9V REG 3 9V
15V RECT
2
20 IC603
D611 CN904
5V RECT 7.5V
3 5V REG 1
21 STDBY 5V 1
L AV IN
2
19
3
R AV IN
4
16 +21V MPEG/AV3
D613
+21V RECT 6
17 MPEG/AV3L
8
18 -21V MPEG/AV3R
D614
-21V RECT
38
VM
[ VELOCITY MODULATION & DYNAMIC CONVERGENCE ]
IC1501 IC1502
CONVERGENCE DYNAMIC
CONTROLLER CONVERGENCE
REFV CY+ 1
V SAW 5 3
3 OUT CY AMP
6 Q1505,
HDY CY- 3
2 VS IN 1506
CONN 6 2
HSTAT 8
CN1502
TO
CN1717 ABL 4
A BOARD
6
CN303
CN1801
CN1802
5 V+ SAW
+9V ROT - 3
6 - TO
TO 7
5 + ROTATION
D1 BOARD 4 V-DRIVE IN
COIL
CN2807 2 ROT + 1
+ 6
3 ROTATION
3 -
CN1719
IC1802
Q.P - 3
ROTATION AMP TO
D1 BOARD
Q.P +
1 CN2805
CN1718
VM ( )
VELOCITY MODULATION &
135V
DYNAMIC CONVERGENCE
CN1716 Q.P.
TO VM AMP VM AMP
4 VM OUT VM OUT VM
Q1701, 1702, BUFFER
D BOARD Q1703, 1706
Q1708, 1709 Q1704, 1705 VM
CN1401 GND
NECK ASSY
D2
[ SMART MODE DEFLECTION ]
D2
CN8801
(SMART MODE DEFLECTION)
4
SMART CORR
5
SMART CORR
+15V 1 3
Q8801
TO D BOARD 7 SWITCH
SWITCH
CN805 Q8802, 8803 2 4
IC8801
SMART MODE
11 DEFLECTION
H-
12
H-
39
D1
[ DYNAMIC FOCUS OF DQP & SUBWOOFER AUDIO AMP ]
CN3803
1
H-DY+
2
H-DY+
3
H-DY-
TO D BOARD
RELAY
RY3801 4 CN800
H-DY-
T3801
5 V-DY-
6
V-DY+
CN3801
RELAY SW
1
Q3801
+9V
TO A BOARD
CN3802
4
CN4 RELAY SW +9V
Q3802 V-
6 V-DY+
V+ V DY
5 V-DY-
4 H-DY-
RELAY
3 H-DY-
RY3802
H+
T3802
2 H-DY+ H DY
H-
1 H-DY+
DY ASSY
IC2201
CN2202 SUBWOOFER AMP
1 SPR
9 INPUT CN2203
2 SPL 1 TO
OUTPUT 1
TO D BOARD
SUBWOOFER
CN1403 3 MUTE SW MUTE SW STBY/
10
Q2201, 2202 MUTE
STBY
4 MUTE
MUTE SW
Q2203
CN2805
2 QP- 1
1 QP OUT
+9V 3 Q2805,Q2806 TO VM BOARD
CN2804 3
CN1719
6
3 15V PULSE 7
TO D BOARD 5
CN801 CN2806
IC2801
DF TO D BOARD
CN802
CN2807
6
TO VM BOARD 7
CN1717
IC2803 1
2
( DYNAMIC FOCUS OF DQP )
D1
4:3 AND 14:9 ASPECT MODE
SWITCHING, SUBWOOFER
AUDIO AMP
40