Read Sharp LC-20B6E (serv.man10) Service Manual online
51
LC-20B6E
Pin No.
Pin Name
Type
Supply
Voltage
Voltage
Connection
Short Description
(If not used)
1
AVSS_ADC
OBL
Analog ground for ADC
2
AVDD_ADC
OBL
Analog supply for ADC (+5 V)
3
ANATSTX
I/O
AVDD_FE8
GND
Test pin
4
ANATSTY
I/O
AVDD_FE8
GND
Test pin
5
AVDD_FE8
OBL
2
nd
analog supply for the front-end
6
AVSS_FE8
OBL
2
nd
analog ground for the front-end
7
AVSS_FE40
OBL
1
st
analog ground for the front-end
8
IFINX
IN
AVDD_FE40
OBL
IF input
9
AVDD_FE40
OBL
1
st
analog supply for the front-end (+5 V)
10
IFINY
IN
AVDD_FE40
OBL
IF input
11
AVSS_FE40
OBL
1
st
analog ground for the front-end
12
AVDD_SYN
OBL
Analog supply for synthesizer (+5 V)
13
AVSS_SYN
OBL
Analog ground for synthesizer
14
SHIELD
IN
OBL
Shield GND
15
TEST0
IN
AVDD_DAC
GND
Test Pin
16
TEST1
IN
AVDD_DAC
GND
Test Pin
17
TEST2
IN
AVDD_DAC
GND
Test Pin
18
CVBS
OUT AVDD_DAC OBL
CVBS
output
19
REF_SW
IN
AVDD_DAC
OBL
Reference frequency switch
20
SIF
OUT AVDD_DAC OBL
SIF
output
21
AVDD_DAC
OBL
DAC supply (+5 V)
22
AVSS_DAC
OBL
DAC ground
23
TEST_EN
IN DVDD
GND
Test
enable
24
RESETQ
IN
DVDD
OBL
Reset
25
I2C_SDA
I/O
DVDD
OBL
I
2
C data
26
I2C_SCL
I/O
DVDD
OBL
I
2
C clock
7.3. Pin Connections
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