Sony VPL-CS1 Service Manual page 96

C Board Waveforms
1 2
1
1.4 Vp-p 1.4 Vp-p
TP805 [R] TP804 [G]
5 6
3.1 Vp-p 10.3 Vp-p
TP814 [HD] TP806 [GINV]
9 0
2
10.3 Vp-p 10.3 Vp-p
TP809 [RINV] TP811 [B-VID|OUT]
MB88346BPFV-EF (IC813)
3
12 BIT SHIFT REGISTER
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
VSS
1
A03
2
8
12
A04 3
D0
D7
A05 4
8 BIT
1
4
LATCH
A06 5
8 BIT
R-2R
D/A CONVERTER
A07
6
A08 7
A09 8
A10
9
5
VDD
10
A01
A B
3 4
1.3 Vp-p 3.3 Vp-p
TP803 [B] TP813 [VD]
7 8
10.3 Vp-p 10.3 Vp-p
TP808 [G-VID|OUT] TP810 [BINV]
!-
10.3 Vp-p
TP812 [R-VID|OUT]
20
GND
ADDRESS
19 A02
DECODER
1 2 3 4 12
18 A01
D0 D7
17 DI
8 BIT
LATCH
16 CLK
8 BIT
R-2R
D/A CONVERTER
15 LD
14 DO
13 A12
12 A11
VCC
11
A12
C
C C
CXA2112R-T6 (IC815, 817, 818)
48 47 46
INVERT
AMP
DLY CNT 49
MCLK 50
MCLK/ 51
INV CNT 52
D
VDD 53
CLOCK
DELAY
CLK OUT 54
CLK OUT/ 55
D.P 56
D.P 57
58
DGND
S/H
PULSES
CLK IN 59 TIMING
GENERATOR
NC 60
CLK IN/ 61
PRG 62
OFFSET CANCEL
MODE TIMING
NC 63
NC 64
1 2 3 4 5 6 7 8 9 10 11 12 13
M52749FP-TP (IC803)
R OSD IN 4
SUB
R INPUT 2 CLAMP
CONTRAST
R V CC 12V 3
GND 5
G OSD IN 9
SUB
G INPUT 6 CLAMP
CONTRAST
8
G V CC 12V
GND 10
B OSD IN 13
SUB
B INPUT 11 CLAMP
CONTRAST
12
B V CC 12V
GND 16
Contrast(ABL) IN 17
Sync On
SOG INPUT 7 Green
Sep
20
SOG Sep OUT
21
Clamp Pulse IN
8-20 8-20
D E
45 44 43 42 41 40 39 38 37 36 35 34 33
SID BIAS VCOM
32 GND2
S/H S/H S/H 31 SH OUT1
BUFFER
30 NC
OFFSET CANCEL
S/H S/H S/H 29 SH OUT2
BUFFER
OFFSET CANCEL 28 NC
SH OUT3
S/H S/H S/H BUFFER 27
26 PVcc
OFFSET CANCEL D.P
25
24 D.P
23 PGND
NC
22
S/H S/H S/H BUFFER 21 SH OUT4
OFFSET CANCEL 20 NC
19
S/H S/H S/H BUFFER SH OUT5
OFFSET CANCEL
18 NC
S/H S/H S/H BUFFER 17 SH OUT6
OFFSET CANCEL
14 15 16
V =12V Main Brightness Retrace Blanking
CC
42 34 30
MAIN RETRACE
OSD MIX AMP 41 R OUTPUT
CONTRAST BLANKING
CLAMP
F/B
MAIN RETRACE
OSD MIX AMP 38 G OUTPUT
CONTRAST BLANKING
CLAMP
F/B
MAIN RETRACE
OSD MIX AMP 33 R OUTPUT
CONTRAST BLANKING
35 Contrast ref.
CLAMP
F/B
31 Contrast cont.
OSD
V 5V
Main LEVEL CC
19
CONTRAST 4bit (DIGITAL)
8bit
23 SDA
B SUB CONT 8bit BUS
DAC
I/F
G SUB CONT 8bit
22 SCL
R SUB CONT 8bit
24 GND
14 1 25 26 27 28 29 32 36 39
GND
GND OSD Blanking DAC output GND
GND
for cut-off Adj
F G
CXA1846AN (IC820)
20 19 18 17 16 15 14 13 12 11
–
8dB STEP 1dB STEP
+
VOLUME VOLUME
VCT
LATCH ZC BUFFER
LATCH
CONTROL DET
SHIFT
REGISTER
8dB STEP 1dB STEP
VOLUME VOLUME
+
–
1 2 3 4 5 6 7 8 9 10
VPL-CS1
H