To code a certain device (TV, DVD, VCR, etc.) press and hold the TV, DVD, VCR, etc. in for 3-5 seconds, input the 3-digit code, press the power button to test the device to make sure the device responds.

I, myself, lost my manual that's in my room somewhere. If I find it, I'll scan the whole manual, setup a PDF file, send you the file, and you'll be happy. I know this thread is almost 3 months old, but that's basically it.