LG 47LM6700 Service Manual page 21

6. GND and ESD Testing
6.1. Prepare GND and ESD Testing
(1) Check the connection between set and power cord
6.2. Operate GND and ESD auto-test
(1) Fully connected (Between set and power cord) set enter
the Auto-test sequence.
(2) Connect D-Jack AV jack test equipment.
(3) Turn on Auto-controller(GWS103-4)
(4) Start Auto GND test.
(5) If its result is NG, then notice with buzzer.
(6) If its result is OK, then automatically it turns to ESD Test.
(7) Operate ESD test
(8) If its result is NG, then notice with buzzer.
(9) If its result is OK, then process next steps. Notice it with
Good lamp and STOPER Down.Check Items.
(10) Test Voltage
- GND: 1.5KV/min at 100Ma
- Signal: 3KV/min at 100Ma
(11) Test time: just 1 second.
(12) Test point
- GND test: Test between Power cord GND and Signal cable
metal GND.
- ESD test: Test between Power cord GND and Live and
neutral.
(13) Leakage current: Set to 0.5Ma(rms)
7. Default Service option
7.1. ADC-Set
▪ R-Gain adjustment Value (default 128)
▪ G-Gain adjustment Value (default 128)
▪ B-Gain adjustment Value (default 128)
▪ R-Offset adjustment Value (default 128)
▪ G-Offset adjustment Value (default 128)
▪ B-Offset adjustment Value (default 128)
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Only for training and service purposes
8. USB DOWNLOAD (*.epk file download)
(1) Put the USB Stick to the USB socket
(2) Press Menu key, and move OPTION
(3)
(4) Press "FAV" Press 7 times.
(5) Select download file (epk file)
(6) After download is finished, remove the USB stick.
(7) Press "IN-START" key of ADJ remote control, check the
S/W version
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LGE Internal Use Only