LG 42LG70 Training Manual page 72
42” class lcd 1080p hdtv
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Also See for 42LG70:
- Training manual (80 pages) ,
- Owner's manual (208 pages) ,
- Manual (148 pages)
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Front Control Connector J1 and J3 Voltage and Diode Check
Front Control Connector J1 and J3 Voltage and Diode Check
J1 CONNECTOR "Front Keys" to "MAIN Board" P404
Pin
Label
1
EYEQ-SCL
2
EYEQ-SDA
3
Gnd
4
Gnd
5
Key1
6
Key2
7
3.3V
8
5V ST
9
Ready
10
IR
11
EYEQ-Reset
12
Gnd
13
Ready
14
Board-Buzz
15
Gnd
Diode Mode values taken with all Connectors Removed
STBY
Run
Diode Check
3.3V
3.3V
3.3V
3.3V
Gnd
Gnd
Gnd
Gnd
3.3V
3.3V
3.3V
3.3V
0V
3.3V
5V
5V
0V
0V
3.9V
3.9V
0V
0V
Gnd
Gnd
0V
0V
0V
0V
Gnd
Gnd
J3 from Ft Control to Side Key P100
Pin
Open
1
Open
2
Open
3
Open
4
Open
Open
5
Open
6
1.8V
Open
Open
Open
Gnd
Open
Open
Gnd
March 2009
70
STBY
Run
3.3V
3.3V
0V
0V
3.3V
3.3V
0V
0V
0.1V
0.1V
5.1V
5.1V
LCD DV 42LG70
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Table of Contents
Troubleshooting
