Block Diagrams - Sony TrinitronKV-28FX66B Service Manual

5-1. BLOCK DIAGRAMS (2)

SCAN RATE CONVERTER,
COLOUR DECODER AND I/O
VIDEO SWTICH
IC3200
100Hz BUFFER
Y SCAN RATE
Y IN 100
2 AY OUT 100
BACKEND
Q3300
AU OUT 100 79
BLK 100
8 NC AY OUT 100 76
H SYNC
17 H OUT 100
V SYNC
23 V OUT 100 X IN 70
BLK 1
37 FBL 1
BLK 2
69
38 FBL 2 X OUT
RED IN 1
39 R IN 1 CVBS OUT 1 63
GREEN IN 1
40 G IN 1 CVBS OUT 2 62
CVBS PIP
BLUE IN 1
41
B IN 1 CVBS OUT 3 61
RED IN 2 C FRONT
46 R IN 2 CVBS 7 58
Y/CVBS FRONT
GREEN IN 2
47 57
G IN 2 CVBS 6
BLUE IN 2 C IN 3
48 B IN 2 CVBS 5 56
VIDEO RF V/Y IN 3
52 CVBS 1 55
CVBS 4
V IN 1 V IN 2
53 CVBS 2 CVBS 3 54
A 2/2 ( )
VIDEO AND AUDIO PROCESSORS, AUDIO
OUTPUT, VERTICAL DEFLECTION
VG(L) 12
Q6804,
VS 15
Q6805
VG(H) 16
9 9
CN6801
1/2 F/B 2 200V 8
AFC
AFC PULSE
6 PULSE
DETECT 1 V SENSE 7
Q6802, Q6803
IC6800
5
200V 10
6
4
3
11
TO
A BOARD
CN5802
BUFFER
Q6803
CATHODE
3 4
REF
IC6803
1 3
1
2 3 2
5
IC6807
7
6
IC6801
DF DRIVE
7
Q8909
ABL
8
TO A BOARD
6dB AMPLIFIER
SHEET1
FOR THE
SELECTABLE
OUTPUT CVBS
PART OF
(3RD SCART)
OVERVOLTAGE
Q3202
PROTECTION
Q5816
6dB AMPLIFIER
FOR THE
SELECTABLE
V OUT 3
OUTPUT CVBS
(3RD SCART)
Q3200
6dB AMPLIFIER
FOR THE
MONITOR
OUTPUT CVBS
(2ND SCART)
Q3204
6dB AMPLIFIER
OVP
FOR THE
MONITOR
V OUT 2 GROUP DELAY
OUTPUT CVBS
(2ND SCART)
COINCIDENCE
Q3201
VIDEO RF COINCIDENCE
DETECTOR
Q1005
100Hz BUFFER
U SCAN RATE
V IN 100
BACKEND
Q3302
RESET AUDIO
100Hz BUFFER
U SCAN RATE U IN 100
BACKEND
Q3301
H SYNC
V SYNC
CVBS TXT
12 C ADAPTOR
5V - 3.3V
+3.3V
Q3500
12 C ADAPTOR
5V - 3.3V
Q3501
T6800
HV
HV
SS RESET
OVERSHOOT
Q6814,
17
PROJECT
Q6813
Q6816, Q6817
13
15
14
G2
DYNAMIC
16 6 DYNAMIC
FOCUS
FOCUS 3 CN6801
Q8918
FV 1 T8901
ABL HPROT 4
1
PROTECT
Q6807
18
19
12
IC6802
7
5
6
UNDER
VOLTAGE
PROTECT
Q6808
HOP OV
5
D2 ( )
DYNAMIC PICTURE
STABILISING CIRCUIT
CN6200
CN7301
1
TO G BOARD
1
CN6008
2
2
CN0101
3
SCL A3
B3 4
SDA TO A BOARD
CN7001
A4
LED
5
SIRCS B4
6
A5
AGC
9
MODE 3 B5
B6
OVP
A7
OCP B7
A8
B8
MAIN RY
DGC RY A9
B10
B TEXT
G TEXT B11 TO M2 BOARD
CN0001
A12
B12
R TEXT
AUDIO MUTE A13
B13
FS 100
MODE 1 A14
A15
AV LINK
B15
MODE 2
LINE MUTE B16
A17
H SYNC
V SYNC B17
TXT VIDEO A19
A20
KEY
12C DISABLE B20
CN0102
SERVICE CONNECTOR
2
SCL
SDA 3
4
CS
AGC 5
WOOFER MUTE
TO A BOARD
CN2502
2/2
TO A BOARD
CN2000
TO
A BOARD
CN5802
- 26 -
IC7300
VIDEO OUT (RED)
R-
1 VB
R+
VI
3
G-
5 IK
G+
B-
B+
IC7325
VIDEO OUT (GREEN)
IK
VB
1
3 VI
5 IK
STANBY SW
Q7355
IC7350
VIDEO OUT (BLUE)
STANBY SW
Q7352
1 VB
STANBY SW
3 VI
Q7353
VOLTAGE DET
5 IK
+12V
Q7354, 7350
CN2908
1
2
R OUT
R IN 3
5
L IN
L OUT 6
CN2906
AUDIO L 6
AUDIO R 9
Y/CVBS 4
C 2
H2( )
FRONT AV &
HEADPHONE
FV
TO D BOARD
FV (T6800)
J7375
G4
R
10
VO
8
G
9
B
8
G2
13
H1
3
PICTURE TUBE
VO 8
HV
TO D BOARD
HV (T6800)
CN7300
H1
TO D BOARD
5
VO 8 CN6500
RV7375
G2
( )
C
R,G,B OUT
J2900
J2900
HEADPHONES
CN2900
L
R
VIDEO
1
Y/C
3
4
2