Sharp SD-AS10 Service Manual page 123

ICP200 VHiBH7868FS-1: Video Driver (BH7868FS)
Pin No. Terminal Name
1 VCC1
2, 3* S1, S2
4 CIN
5 MUTE1
6 CVIN
7 SEL (CV/MIX)
8 YIN
9 BIAS
10 SEL (CLAMP/BIAS)
11 Py/G IN (CLAMP/BIAS)
12 GND1
13 Pb/B IN
14 MUTE2
15 Pr/R IN
16 VCC2
17, 18 Pr/R OUT SAG, Pr/R OUT
19 GND2
20, 21 Pb/B OUT SAG, Pb/B OUT
22 GND2
23, 24 Py/G OUT SAG, Py/G OUT
25 GND2
26, 27 YOUT SAG, Y OUT
28 GND2
29, 30 CVOUT SAG, CV OUT
31 S-DC OUT
32 COUT
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Power supply terminal.
S1/S2 Select terminal.
Signal input terminal.
Mute select.
Signal input terminal.
CV or MIX select.
Signal input terminal.
Bias
Clamp or bias select for Py/G amp.
Signal input terminal.
GND
Signal input terminal.
Mute select.
Signal input terminal.
Power supply terminal.
Component or R signal output terminal.
Component or R signal SAG compensation terminal.
GND
Component or B signal output terminal.
Component or B signal SAG compensation terminal.
GND
Luminance signal output terminal. (CLAMP MODE)
G signal output terminal. (BIAS MODE)
Luminance/G signal SAG compensation terminal.
GND
Luminance signal output terminal.
Luminance signal SAG compensation terminal.
GND
Luminance signal output terminal.
Luminance signal SAG compensation terminal.
S1/S2 DC out.
Chroma signal output terminal.
VCC1
1
S1
2
S2
3
6dB
CIN Bias
4
MUTE1 5 MUTE1
6dB
CVIN 6 Clamp
SEL(CV/MIX)
7
YIN
8 Clamp 6dB
BIAS
Bias
9
SEL(BIAS/CLAMP)
10
H
Bias
Py/G IN
11
Clamp
L
12
GND
Pb/B IN Bias
13 6dB
MUTE2
14 MUTE2
6dB
Pr/R IN
Bias
15
16
VCC2
Figure 8-14 BLOCK DIAGRAM OF IC
Function
6MHz
75Ω
COUT
32
LPF
S-DCOUT
31 S-DCOUT
S1/S2
L
6MHz
75Ω
30
LPF CVOUT
H
29 CVOUT SAG
28 GND
6MHz
75Ω
LPF YOUT
27
26
YOUT SAG
GND
25
12MHz
6dB
LPF
75Ω
24 Py/G OUT
23
Py/G OUT SAG
22 GND
12MHz
LPF
75Ω 21
Pb/B OUT
Pb/B OUT SAG
20
19 GND
12MHz
75Ω
LPF
18 Pr/R UOT
Pr/R UOT SAG
17
8 – 14
SD-AS10