42LD840 - LG TV Service Manual (repair manual). Page 17

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8.  Default Service option.  
8.1 ADC-Set.   
A
R-Gain adjustment Value (default  128)  
A
G-Gain adjustment Value (default  128) 
A
B-Gain adjustment Value (default  128) 
A
R-Offset adjustment Value (default  128) 
A
G-Offset adjustment Value (default  128) 
A
B-Offset adjustment Value (default  128) 
8.2 White balance. Value.  
9. 
USB DOWNLOAD (*.epk file
download)   
9.1 Put the USB Stick to the USB socket 
9.2 Press Menu key, and move OPTION  
9.3 Press “FAV” Press 7 times. 
9.4 Select download file (epk file) 
9.5 After download is finished, remove the
USB stick. 
9.6 Press “IN-START” key of ADJ remote
control, check the S/W version.
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