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32
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Model No.: 14LAANZACDC
Version: 1.0
Table 3 Functions and service Data of LC863432B-54H7
GDM8145 Multimeter
Ground Resistance (K
Ω
)
Pin
No
Function Description
Voltage of
Pin (V)
Measure with Red
Probe while
grounding Black
probe.
Measure with
black probe while
grounding red
probe
1
Band1 (V-L select /IIC SDA1 for
control tuner)
0~4.5V 360
3650
2
Band2 (V-L select /IIC CLK1 for
control tuner)
0~4.5V 360
3650
3
IIC SDA0, for control IC
5.1V
22
22
4
IIC CLK0, for control IC
5.1V
22
22
5 GND
0V
0
0
6
Crystal port for CPU
2.3V
1200
3650
7
Crystal port for CPU
2.7V
1200
3650
8 Supply
(+5V)
5.1V
10
10
9 Key
in
port
0~3.6V
10
10
10
AFT signal input port
2.38
49
49
11
SCART detection (no used to “1”)
5V
10
10
12
SECAM detection (no used to “0”)
0/5V
6.5
6.5
13
CPU reset port
5.1V
4.6
4.5
14 OSD
filtering
3.6V
50
270
15
4.5M sound absord option
0.03V
393
3650
16 Translucence background menu
control
V 7.8 7.8
17
Vertical pulse input
5.1V
10
10
18
Horizontal pulse input
4.5V
10
10
19
OSD red signal output
0.01V
2800
3650
20
OSD green signal output
0.01V
2800
3650
21
OSD blue signal output
0.01V
2800
3650
22
OSD blanking signal output
0.01V
6.5
6.5
23 Power
on
/off
0/5V
3000
3300
24 MUTE
control
5V
3200
3300
25
Automatic adjustment enabling port
5V
3200
3300
26 Sensitive receiving switch control
(being the way of video, can be used as
YUV input control)
0/5V 440
3300
