I purchased this remote recently and had programmed to TV and blu-ray player. My kids deprogrammed it and now I can't find the manual. I've searched online and even called zenith customer service (provided by LG) but to no avail. It looks very much like the ZN501s that is depicted in the manual in the database on this site. It is a 5 function remote but requires 4-digits codes. All of the zenith information I have found lists 3-digit codes. I specifically need the code to program a sony blu-ray player. I was able to program the tv using the code search feature but the blu-ray would not work. I know it has a code because I had it working for a few weeks. Any help would be appreciated greatly. (If it helps there are two stickers in the battery compartment. The first lists ZP505 and under that DDKJ. On the other side of the compartment there is a sticker that says AM043.)