Read Sharp LC-20B6E (serv.man10) Service Manual online
56
LC-20B6E
Number
Name
I/O
Description
1
G
INA
/U
INA
I
Analog G
INA
or U
INA
signal input. Sync signal is input on SYNCIN pin.
2
GSG1
I
G
OUT
/U
OUT
output buffer gain set input
3
G
INB
/U
INB
I
Analog G
INB
or U
INB
signal input. Sync signal is input on SYNCIN pin.
4
NC
–
No connection (leave open or connect to ground)
5
B
INA
/V
INA
I
Analog B
INA
or V
INA
signal input. Sync signal is input on SYNCIN pin.
6
GSB1
I
B
OUT
/V
OUT
output buffer gain set input
7
B
INB
/V
INB
I
Analog B
INB
or V
INB
signal input. Sync signal is input on SYNCIN pin.
8
NC
–
No connection (leave open or connect to ground)
9
DISABLE
I
Power save function. Built-in pull-down resistor.
L: Enable
H: Disable (Output pins: R
L: Enable
H: Disable (Output pins: R
OUT
/Y
OUT
, G
OUT
/U
OUT
, and B
OUT
/V
OUT
are high impedance.)
10
GND3
−
Analog ground
11
B
OUT
/V
OUT
O
B/V signal output
12
VCC3
−
Analog 5V supply
13
GND2
−
Analog ground
14
G
OUT
/U
OUT
O
G/U signal output
15
VCC2
−
Analog 5V supply
16
GND1
−
Analog ground
17
R
OUT
/Y
OUT
O
R/Y signal output
18
VCC1
−
Analog 5V supply
19
GND4
−
Analog ground
20
RFC
−
LPF (lowpass filter) cutoff frequency setting resistor connection
21
VFC
I
LPF (lowpass filter) cutoff frequency setting voltage input
22
MUXSEL
I
Input select signal. Built-in pull-down resistor.
L:
L:
×
INA
pin select
H:
×
INB
pin select
23
SYNCIN
I
Filter channel external H-Sync signal input. Active “H”. Built-in pull-down resistor.
24
VCC4
−
Analog 5V supply
25
R
INA
/Y
INA
I
Analog R
INA
or Y
INA
signal input. Sync signal is input on SYNCIN pin.
26
GSR1
I
R
OUT
/Y
OUT
output buffer gain set input
27
R
INB
/Y
INB
I
Analog R
INB
or Y
INB
signal input. Sync signal is input on SYNCIN pin.
28
NC
–
No connection (leave open or connect to ground)
8.3. Pin Description
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