I just purchased a Toshiba HD A20 from Best Buy but the unit didn't have a user manual

Hello,hd is for video only so the answer is no,however there is a newer surround sound available for blu ray called dolby tru hd,alas your system isnt dolby true hd however dolby digital (which you have) still sounds excellent.

You can download it from this link.

http://www.tacp.toshiba.com/tacpassets-images/models/HD-A20/docs/HD-A20KUKC_E.pdf

The reciever you have has 5.1 inputs at the backof it.The only way to get Dolby True HD and DTS HD is to run the 7.1 analog out from the bd55 to the nad. You'll have to leave the 2 rear surround open on the bd55 leaving the remaining 6 connected to the nad. The digital coax and the optical will not transmit the hd data, only the analog out will. Run a hdmi right to your HD tv for picture bypassing your amp. this will workfine and you'll have the audio you want. You,ll have to change the input settings for dvd in your amp to 5.1 to recieve the audio.

In the PS3 menu, open Settings > Video Settings > BD/DVD Audio Output Format (HDMI) or (Optical Digital) depending on which one you are using. Set the type to to Bitstream (Linear PCM does not send the DD stream through).

you can get the users manual online on toshiba's website.

Try checking your audio output in the setup screen of dvd player. Try setting Digital Out HDMI to Auto, if it isn't already. See if that helps.

I have a problem like this but mine will play regular dvd's
and just stop playing hd dvd's . exact same message

gene
[email protected]

i am having the same problem with the HD-A2KU hd dvd player not recognizing any of the codes. it seems that the dvd player does recognize the codes but will not control the player. when i click the on off button the dvd player changes to a word but does not turn it off or control it.

try changing the cable, or use a different source.  It may just be the optics aren't functioning correctly.

If it is a new DVD that may be a problem, as signal changes may be frustrating this old machine... but it is likely the cabling from the DVD player to the reciever. Are you on the right channels/settings? is the optical cable and digital cable recieving digital output from your DVD player? Try changing those settings and you should be in good shape Thanks! good luck!