A/D, D/A, Osd, Sync Section – - Sony LDI-D100B Service Manual

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L 1 3 9 4 2 2 9 6 5 1 3
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LDI-D100B
4-2. BLOCK DIAGRAM – A/D, D/A, OSD, SYNC Section –
IC1101 – 1103
VIDEO RGB A/D CONVERTER
IC1101
R, G, B R
D
21 VIN
(Page 4-3)
15 12
BF
F
(Page 4-3)
IC1102
G
21 VIN
15 12
IC1103
B
21 VIN
15 12
WCK,
RCK WCK
LEVEL SHIFT
H
IC1108 (1/2)
(Page 4-8)
RCK
LEVEL SHIFT
IC1108 (2/2)
RSTW, RSTR
I
(Page 4-8)
H SYNC SELECT
IC133
1
5 3
R
2
7
G
3
B
2 6
13
H SYNC
1
14
V SYNC
J101
5 3
RGB
7
VIDEO H SYNC,
VIDEO V SYNC
G
2 6
(Page 4-3)
1
V SYNC SELECT
x a o u 1 6 3
IC132
y
i
EVR FH
J
(Page 4-10)
05
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8
VIDEO RGB
IC1104 – 1106
D/A CONVERTER
LINE MEMORY
IC1201
IC1104
VIDEO AMP
RO 37
Q1251, 1252
VIDEO AMP
Q1261, 1262
17 8 19 6
VIDEO AMP
Q1271, 1272
IC1105
GO 39
17 8 19 6
IC1106
BO 41
Q Q
3 7 6 3 1
17 8 19 6 27 28 29
GATE SWITCH DIVIDER
IC453 IC452
SYNC DETECT
RESET
IC443
PH 18
4 CS IN
PV 19
1 VS IN
EH
16
EV 17
H SYNC SELECT
IC447
5 3
7
IC446
2 TRIG OUT 3 2 6
1
V SYNC SELECT
TIMER
IC451
IC445
c o
5 3
7
.
2 6
1
4-5
http://www.xiaoyu163.com
2 4
9 9 8
IC937
IC931 – 933, 935 – 937
OSD MIX SWITCH 2 1
PC/VIDEO RGB SELECTOR
IC131
4
CLAMP
VIDEO
7 V-R R-OUT 21
Q933, 951 VIDEO AMP OSD MIX AMP
BUFFER
Q939, 942 Q945
1 PC-R
Q936
1
IC933
9 V-G G-OUT 19
3 4
PC-G
2
11 V-B B-OUT 15
PC-B
5
IC936
2 1
16
4
CLAMP
VIDEO
VIDEO AMP OSD MIX AMP
Q932, 950
BUFFER
Q938, 941
Q935
1
IC932
4
2
IC935
2 1
5 1 5 0 8 9 2 4 9
4
CLAMP
VIDEO
VIDEO AMP OSD MIX AMP
Q931, 949
BUFFER
Q937, 940
Q934
1
IC931
4
SYSTEM CONTROLLER
IC501 (2/5)
2
99 PC/XVIDEO CONT
OSD MIX
V MUTE 89 SWITCH CONTROL
IC934
31 HSYNC2
80 POL H
POL V
81
16
HSYNC DET
78
79 VSYNC DET
OSD DISP
58 14 DISP
OSD TRE 47 23 TRE
ON SCREEN DISPLAY
EXT/XINT XCS OSD
59 43 26 CS
CONTROLLER
HSYNC TG
IC401
19 PC/XV CONT
m
VSYNC TG
4-6
2
9 9
• SIGNAL PATH (Page 4-7)
K
: VIDEO
R/G/B
MIX OUT
R MIX OUT
CLAMP
Q948
OSD R
G MIX OUT
CLAMP
Q944 Q947
OSD G
8 2 9 9
B MIX OUT
CLAMP
Q943 Q946
OSD B
RESET
L
(Page 4-10)
5
OSD R
ROUT (C1) 19
OSD G
GOUT (C2) 18
OSD B
BOUT (C0) 20
SDATA SDATA, SCLK
M
SIN 25
SCLK
SCLK 24 (Page 4-10)
DOCKI DOCKI, XCLP1, VST
N
DOCKI 8
XCLP1
HSYNC 12 (Page 4-8)
VST
VSYNC 13
HSYNC TG,
VSYNC TG
O
(Page 4-7)