Read Sharp LC-M3700 (serv.man9) Service Manual online
41
LC-M3700
LC-M3710
LC-M3710
41-1
41-2
Ë
VHiSM5301AS-1Y(ASSY:IC8805)
3ch output video buffer with a built-in high band filter.
»
Block Diagram
1
GINA/UINA
I
Analog GINA or a UINA signal input terminal. A synchronized signal is inputted
from a SYNCIN terminal.
2
GSG1
I
The terminal for a GOUT/UOUT output buffer gain setup.
3
GINB/UINB
I
Analog GINB or a UINB signal input terminal. A synchronized signal is inputted
from a SYNCIN terminal.
4N
C
—
Not connected
5
BINA/VINA
I
Analog BINA or a VINA signal input terminal. A synchronized signal is inputted
from a SYNCIN terminal.
6
GSB1
I
The terminal for a BOUT/VOUT output buffer gain setup.
7
BINB/VINB
I
Analog BINB or a VINB signal input terminal. A synchronized signal is inputted
from a SYNCIN terminal.
8N
C
—
Not connected
9
DISABLE
I
Power save function. Pull down resistance built-in.
L : Enable
H : Disable(output terminal : ROUT/YOUT, GOUT/UOUT and BOUT/VOUT are
high impedance.)
10
GND3
—
Analog GND terminal.
11
BOUT/VOUT
O
B/V signal output terminal
12
VCC3
—
Analog 5V power supply terminal.
13
GND2
—
Analog GND terminal.
14
GOUT/UOUT
O
G/U signal output terminal
15
VCC2
—
Analog 5V power supply terminal.
16
GND1
—
Analog GND terminal.
17
ROUT/YOUT
O
R/Y signal output terminal
18
VCC1
—
Analog 5V power supply terminal.
19
GND4
—
Analog GND terminal.
20
RFC
I
L.P.F.(Low path filter) The resistance connection terminal for a cutoff frequency setup.
21
VFC
I
L.P.F.(Low path filter) The resistance connection terminal for a cutoff frequency setup.
22
MUXSEL
I
Input terminal selection signal. Pull down resistance built-in.
L : XINA terminal side is chosen.
H : YINB terminal side is chosen.
23
SYNCIN
I
The external H-sync signal input terminal for filter channels.
Active "H." Pull down resistance built-in.
24
VCC4
—
Analog 5V power supply terminal.
25
RINA/YINA
I
Analog RINA or a YINA signal input terminal. A synchronized signal is inputted from a SYNCIN terminal.
26
GSR1
I
The terminal for a ROUT/YOUT output buffer gain setup.
27
RINB/YINB
I
Analog RINB or a YINB signal input terminal. A synchronized signal is inputted from a SYNCIN terminal.
28
NC
—
Not connected
Pin No
.
Pin Name
I/O
Pin Function
»
Pin Function
Ë
VHiTC90A69F-1Y(ASSY:IC401)
3 Line Digital Comb Filter
»
Block Diagram
Pin No
.
Pin Name
I/O
Pin Function
»
Pin Function
1
BIAS
—
Bias for ADC
2
VRT
—
D range upper bias for ADC
3
VDD1
—
Power supply for ADC and DAC (analog system)
4
TESTI1
I
Test input
5
VSS2
—
GND for ADC (analog system)
6
VRB
—
D range lower bias for ADC
7
YCIN
I
Picture signal input
8
TEST
O
Reset control and TEST control at the time of shipment
9
KILLER
I
Y/C separation and vertical enhancer-off control
10
TESTI2
I
Test input
11
VDD3
—
Power supply for logic (digital system)
12
VSS3
—
GND for Logic and DRAM (digital system)
13
VDD2
—
Power supply for DRAM (digital system)
14
TESTI3
I
Test input
15
SCL
I
Clock input of IIC BUS
16
SDA
I
Data input of IIC BUS
17
MODE1
O
MODE1 output
18
TESTOUT
I
Test input
19
FSC
I
Clock input
20
VDD4
—
Power supply for PLL (analog system)
21
VSS4
—
GND for PLL (analog system)
22
FIL
I
VCO control
23
PD
O
P
LL detection output
24
VB2
—
Bias 2 for DAC
25
YOUT
O
Luminosity signal output
26
VSS1
—
GND for DAC (analog system)
27
COUT
O
Color signal output
28
VB1
—
Bias 1 for DAC
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