Lcd Block Diagram - Sony GV-A500 Service Manual

GV-A500/A500E

3-8. LCD BLOCK DIAGRAM

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