Read Sony DSC-P20 Service Manual online
DSC-P20
3-14
3-13
3-7. LCD BLOCK DIAGRAM
20
R OUT
22
G OUT
24
B OUT
37
PSIG OUT
1
BRIGHT
SY-66 BOARD (6/6)
PANEL 13.5V
BRT
VG
PANEL COM
2
COLOR
COLOR
9
COM
COM
7
VREF
3
BRT R
BRT R
4
BRT B
BRT B
EXT BGP
RGBBLK
PRG
FRP
XCLP
SBLK
PRG
FRP
5
CONTRAST
CONT
6
B LIMIT
B LIM
12
BRT TEST
11
PGRAY
P GRAY
TEST
TEST
16
V REV
IC804
LCD TIMING GENERATOR
(SEE PAGE 4-26)
32 RPD
44 VREV
37 XHD
34 XVD
10
RGT
11
HCK1
12
HCK2
16
HST
17
WIDE
22
EN
23
VCK
24
VST
21
DWN
14 28 36 29
R/R-Y/CR
9
G/Y
8
B/B-Y/CB
10
Q804, 805
PSIG
DRIVE
Q806
COM
DRIVE
IC803 (2/2)
(SEE PAGE 4-26)
V REV
15
H REV
46 HREV
27 CKII
1
XCLP
7
SBLK
8
PRG
9
FRP
26 CKO
H REV
8
VCO
17
NTSC
41 NT/PAL
NTSC
18
COMTST
47 COMTST
COMTST
10
BL LEV
BL LEV
VCO
FILTER
VG
VR
VB
20
21
22
PSIG
19
2
23
18
17
16
14
13
12
6
5
4
3
IC802
EVR (D/A COMVERTER)
(SEE PAGE 4-25)
05
CN805
BRIGHT
39
COLOR
6
SUB BRT R
32
SUB BRT B
31
CONTRAST
40
BLACK LIMIT
27
XTEST
38
PSIGGRAY
35
VREF
26
22 EN
19 SCK
20 SI
VREF
AMP
Q811
REF.
VOLTAGE
GEN.
LCD DRIVE
(SEE PAGE 4-25)
IC801
LCD DRIVE
LCD901
1.5inch
COLOR
COLOR
LCD
MONITOR
VCOM
RGT
HCK1
HCK2
CREXT
REF
HST
WIDE
DWN
EN
VCK
VST
G
R
B
PSIG
COM
RTG
HCK1
HCK2
CREXT
REF
HST
WIDE
DWN
EN
VCK
VST
(1/2)
(SEE PAGE 4-26)
IC803
7
15
6
PANEL R-Y
PANEL Y
PANEL B-Y
HDO
Y OUT
C OUT
PANEL V
45 HDO
XCS LCD DAC
XCAM SCK
CAM SO
VREF
VCO
TO
CAMERA BLOCK1
(SEE PAGE 3-4)
TO
CAMERA BLOCK2
(SEE PAGE 3-6)
TO
CAMERA BLOCK1
(SEE PAGE 3-4)
IC806
BACK LIGHT CONTROL
(SEE PAGE 4-26)
HSY
BL L1
19
TO
MODE CONTROL BLOCK
(SEE PAGE 3-10)
D901
BACK LIGHT
CN806
4
3
BL H
BL FB
Q813
Q812, 814, 817
BACK LIGHT
SWITCH
1
3
4
+
–
–
BACK LIGHT
DRIVE
11
12
5
1
CPC
(FOR CHECK)
CN706
LANC IN
LANC OUT
LANC IN
LANC OUT
CPC IN
CPC IN
9
8
BL ON
7
3
2
Y OUT
C OUT
C OUT
IC801
8
REC/PB
440 mVp-p
H
IC801
9
REC/PB
200 mVp-p
H
IC801
0
REC/PB
160 mVp-p
H
IC801
w;
REC/PB
8.1 Vp-p
2H
IC801
ws
REC/PB
7.7 Vp-p
2H
IC801
wf
REC/PB
7.3 Vp-p
2H
IC801
ej
REC/PB
2H
5.0 Vp-p
IC804
wh
REC/PB
3.2 Vp-p
11.70 MHz
IC804
ef
REC/PB
V
3.0 Vp-p
IC804
ej
REC/PB
H
3.0 Vp-p
H
IC804
rg
REC/PB
3.4 Vp-p
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