In return to posted useful info here...
I'm in process of fixing old Sony Bravia KDL-37P3000 TV (so far so good, replaced Inverter PCB, perhaps need good T-Conn PCB too).
While testing its picture [720 native resolution], I decide to use my HDT-610R (UK predecessor of USA K77 aka DVR+) to feed it through HDMI input by play some old recordings.
The DVR doing it job well, so I thought why not program the flat remote to control TV same time ? It would be convenient for me.
Aero1 did good move when uploaded DVR+ Guide to the thread - old URLs pointing to CM site giving me just white screen
So, I began programming DVR's remote …. NO ONE listed Sony TV code doesn't work ! Bummer !
Here is interesting engineering info: using IR decoding box [KL-600IR] I did check what exactly is programmed for each Sony codeset of DVR's.
Basically, the box does show a family model chip [Format], system code (specific for a pair remote+box) [System] and button code(s).
I got original Sony TV remote RM-ED017 and pull all the pertinent data: Sys = 01, Format = 6124, PwrButton = 15 (all values are hex).
Now it's a time to see what each DVR remote Sony code making...
1071: - nothing registered (perhaps the IR decoder can not parse the data format)
1641: 1F/17;3004;04 (the two Sys codes alternating on each press of pwr/any button)
1901: - same as first code
2161: - same as first code
2741: - same as first code
3891: - same as first code
4891 and 5321 are rejecting by the remote (four quick flashes instead of two long)
And most intrigued part of the experiments: I found matching code!
Manually, using brute force and my luck
. It was 1041.
One small mishap but it's not a roadblock - a code for TV AV button is 40, while original Sony remote emit 25.
So, the TV could be control by buttons of DVR flat remote: TV PWR/TV AV [not useful]/Vol+/Vol-/Mute.
Hope it will help someone here.
PS. "System Code" named by the logger-decoder's designer in reality is "Address Code" aka "Custom Code" according by datasheets of remote control's chip.