LG DU-50PY10 Owner's Manual page 30

Installation
18. Screen 18: VCR Preparation
Follow the on-screen instructions, and press ENTER to display Screen
19.
19. Screen 19: VCR Code Testing
When testing is done, Screen 20 displays automatically.
20. Screen 20: VCR Tuned to Channel 9?
•If you select Yes, you see Screen 21.
•If you select No, a different code is tested in Screen 19.
Note : Many VCRs require testing more than one code.
•If you select Test this code again, the same code is tested again in
Screen 19.
30 Plasma TV