Sony VPL-CS2 Service Manual page 106

1
C Board Waveforms
1 2
2.4 Vp-p 2.4 Vp-p
TP806 [R] TP807 [G]
5 6
4.4 Vp-p 10.2 Vp-p
TP804 [HD] TP812 [GINV]
2
9 0
10.2 Vp-p 10.2 Vp-p
TP820 [RINV] TP817 [B-VID|OUT]
3
MB88346BPFV-EF (IC817)
12 BIT SHIFT REGISTER
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
VSS 1
A03
2
8
12
4
A04 3
D0
D7
A05 4
8 BIT
1
LATCH
A06 5
8 BIT
R-2R
D/A CONVERTER
A07
6
A08 7
A09 8
5
A10
9
VDD 10
A B
3 4
2.4 Vp-p 4.4 Vp-p
TP808 [B] TP803 [VD]
7 8
10.2 Vp-p 10.2 Vp-p
TP813 [G-VID|OUT] TP816 [BINV]
!-
10.2 Vp-p
TP821 [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
LD
15
14 DO
13 A12
12 A11
11 VCC
A12
A01
C
C C
CXA2112R-T6 (IC819, 826, 829 : VPL-CS2)
(IC819, 820, 826, 827, 829, 830 : VPL-CX1)
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
DGND 58
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
3
R V CC 12V
GND 5
G OSD IN 9
SUB
G INPUT 6 CLAMP
CONTRAST
G V 12V 8
CC
GND 10
B OSD IN 13
SUB
B INPUT 11 CLAMP
CONTRAST
B V 12V 12
CC
GND
16
Contrast(ABL) IN 17
Sync On
7 Green
SOG INPUT
Sep
SOG Sep OUT 20
21
Clamp Pulse IN
8-20 8-20
D E
CXA1846BN (IC825)
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
S/H S/H S/H SH OUT3
BUFFER 27
26 PVcc
OFFSET CANCEL
25 D.P
D.P
24
PGND
23
22 NC
S/H S/H S/H
BUFFER 21 SH OUT4
OFFSET CANCEL 20 NC
S/H S/H S/H 19
BUFFER SH OUT5
OFFSET CANCEL
18 NC
S/H S/H S/H 17
BUFFER SH OUT6
OFFSET CANCEL
14 15 16
V =12V Main Brightness Retrace Blanking
CC
42 34 30
MAIN RETRACE
AMP
OSD MIX 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
LEVEL V CC 5V
Main
19
(DIGITAL)
CONTRAST 4bit
8bit
23 SDA
BUS
B SUB CONT 8bit
DAC
G SUB CONT 8bit I/F
22 SCL
R SUB CONT 8bit
24 GND
14 1 25 26 27 28 29 32 36 39
GND GND
GND OSD Blanking DAC output
GND
for cut-off Adj
F G
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-CS2/CX1
H