Sony GV-A500E, Service Manual

Page: 31 / 127

GV-A500/A500E
3-8. LCD BLOCK DIAGRAM
3-20 3-21 3-22
1
D3.2V
IC802
13
LCD Y 15 IC129
VC-197 BOARD
FROM
VIDEO 1
BLOCK
FILTER
Q802
BUFFER
LCD C
13
IC129
CG R
16 IC104
Q801
-6dB AMP
IC803
10
9
5
4
2
1
13
12
11 1
2
4
3
6
8
Q811
LCD 4.9V
IC804
CG G
17
IC104
CG B 18 IC104
VBO
15 IC104
CG VD
19
IC104
Q808
I/O EXP
VDD
14 VCC
23 VDDA
20 CLK
LCD 4.9V
CN112
1 BRIGHT
4 BRT R
5 BRT B
6 CONT
9 CONT R
10 CONT B
2
COLOR
3
HUE
43
Q805
BUFFER
Q806
IC805
SW
1
4
2
SW
Q814 12 C OUT
9 R-Y
10 B-Y
16 APC FIL
7
BURST
13
6
35
34
43
28
27
32
LCD 4.9V
HUE
COLOR
SB CONT B
SB CONT R
CONTRAST
SB BRT B
SB BRT R
BRIGHT
PAL
ONLY
8
KIL FILL
FILTER
Q804
8 V COM
11 H POS
18 W MODE
15 NTSC
12 BL LEV
19 SI
22 EN
34
IC1952
35
IC1952
57 IC1952
56 IC1952
27
IC1952
HI SCK
HI SO
CS LCD D/A
ALTERNATE
PANEL JOG
FROM
VIDEO 2
BLOCK
TO/FROM
MODE
CONTROL
BLOCK
Q813
BUFFER
91
IC117 HOLD
TO/FROM
SYSTEM
CONTROL
BLOCK
48
PICTURE
16 VCO O
VCO I
39
EXT B
40
EXT G
41
EXT R
3
Y IN
5
C IN
RGB DECODER
IC801
LCD 4.9V
RGB
DECODER
3.58MHz
(NTSC)
4.43MHz
(PAL)
X801
17
VCC1
20
R OUT
22
G OUT
24
B OUT
36
SYNC IN
37
SYNC OUT
29
FRP
VCC2
LCD 4.9V
VSH 12V
L805
V COM
VPH
W MODE
NTSC
BL LEV
Q803
BUFFER
10
R900
BL UNREG
LCD 4.9V
VDD 3.2V
VGH 18.5V
VGL -10.5V
R880 L901 R888
L904
R904
L902 R902
CN802
2
3
7
9
4
8
4
VR
VG
VB
HDB
FRP
V COM
SRT
(FOR CHECK)
6
SYNC
VR
VG
VB
HDB
FRP
SRT
SYNC
5
6
12
16
11
13
27
29
25
2
24
21
23
BL UNREG
P4.9V
VDD3.2V
VSH 12V
VGH 18.5V
VGL -10.5V
VCO
WMSK
QVD
WHB
9
22
19
10
26
1
20
14
15
4
5
6
12
16
11
13
27
29
25
2
24
21
23
9
22
19
10
26
1
20
14
15
4
5
6
12
16
11
13
2
24
21
23
9
22
19
10
1
20
14
15
4
5
6
11
13
12
16
1
21
22
2
19
3
5
3
5
1
2
1
2
VR
VG
VB
FRP
VDD3.2V
VSH
VGH
VGL
V COM
VPH
W MODE
NTSC
VCO
WMSK
QVD
WHB
SRT
HDB
SYNC
VG
VR
VB
9
V COM
SRT
IC802
LCD DRIVER
HDB
18
WMSK
SYNC
10
15
NTSC
17
W MODE
WHB
14
QVD
20
VPH
1
2
3
8
IC803
V COM
(1/2)
VCO
VSH
VDD3.2V
VGL
VGH
L808
L803
VDD 3.2V
VSH 12V
VGL -10.5V
VGH 18.5V
FRP
CN801
2
34 SW
SRT1
33 HDB
7 CSY
8 M3
3 M1
44 WHB
41 QVD
1 PHO IN
2 PHO OUT
30 PD
27 OSCI
26 OSCO
IC803
5
6
7
V COM
(1/2)
11 FRP
16
SRT2
24
RIGHT
15
DOWN
13
GPCK
23
MCLK
22
HCNT
46
SCNT
48
HSW
12
GRES
14
GSRT
20
OE
21
CLR
18
RESET
Q801,803
CN802
BL UNREG
P4.9V
BL LEV
SAW
OSC
SHORT
CIRCUIT
PROTECT
IC801
DC/DC CONV.
7
1
3
5
VOL
ERR AMP
4
VCC
BUFFER
Q808
Q806
Q807
PROTECT
SWITCH
2
1 3
5
4.
D808
L801 L806 L805
Q812
SWITCHING
INV
SW
Q816
2
3
5
6 12
7 1
T801
INV TRANCE
INV
CONV.
IC804
1 4
Q817
Q818
LED SW
3
2
LOW
HIGH
CN803
CN804
4
1
3
25
26
8
15
14
7
5
17
18
16
19
6
9
20
12
13
10
23
22
24
11
2
21
VR
VG
VB
V COM
VBC
VSS
SRT L
SRT R
MODE1
MODE2
GPCK
MCLK
HCNT
SCNT
HSW
GRES
GSRT
OE
CLR
RESET
VSH
VDD
VREF H
VGL
VGH
VREF L
LCD
PANEL
(4 INCH)
PD-88 BOARD
BACK
LIGHT
FP-576
(FLEXIBLE)
P4.9V
BL LEV
BL UNREG
16
7 VCO
25
VSH 12V
14
(SEE PAGE 4-33)
(SEE PAGE 3-5)
(SEE PAGE 3-8)
(SEE PAGE 3-18)
(SEE PAGE 3-13)
(SEE PAGE 4-68)
IC801
5
REC/PB
IC801
!¢
REC/PB
IC801
@º
REC/PB
IC801
@™
REC/PB
IC801
@¢
REC/PB
IC801
#§
REC/PB
IC801
#¶
0.4Vp-p
(NTSC)
H
0.7Vp-p
4.43MHz (PAL)
3.58MHz (NTSC)
4.8Vp-p
4.8Vp-p
H
H
4.8Vp-p
0.2Vp-p
(NTSC) H
4Vp-p
H
H
IC801
3
REC/PB
0.5Vp-p
H
IC802
7
IC802
!£
IC802
!§
IC802
@£
IC802
@§
3Vp-p
H
3Vp-p
H
3Vp-p
H
3Vp-p
3Vp-p
8MHz