Read Sharp LC-37AD1E (serv.man10) Service Manual online
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LC-37AD1E
Ë
VHITC90A69F-1Y(ASSY:IC401)
3LINE DIGITAL COMB FILTER(NTSC/PAL)
»
Block Diagram
»
Pin Function
Pin No
.
P
in Name
I/O
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
K
ILLER
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
C
lock input
20
VDD4
—
Power supply for PLL (analog system)
21
VSS4
—
GND for PLL (analog system)
22
FIL
I
VCO control
23
PD
O
PLL 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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