LG DU-42PY10X Owner's Manual page 26

Installation
5. Screen 5: Which TV input is the cable box plugged into?
•If you select Cable, you see Screen 6.
•If you make any other choice, you see Screen 7 .
6. Screen 6: Cable Box Tuning Channel
•Select the channel used for the cable box.
•Press ENTER to display Screen 7.
7. Screen 7: Cable Box Configuration Diagram
•The diagram shows the correct way to install the G-LINK Cable from
the back of the device to the cable box.
Make sure the G-LINK Cable is properly installed.
•Press ENTER to display Screen 8.
26 Plasma TV