If I'm looking at the back of your receiver correctly, you don't have a record out at all. You have a Zone 2 output that is listed as 'Pre/Line Out' under it.
https://images-na.ssl-images-amazon.com/images/I/81OGv3Jj3WL._SL1500_.jpg
Almost all two zone receivers that offer RCA outputs allow you to switch the output from variable to fixed. Variable (pre-out) if you are using the remote to control the volume. Fixed (line out) if you are using a volume control in the wall to handle the volume.
You CAN use it as a record out if you want, but it will have to be selected manually as your zone 2 source, and it may require you to have analog connections to the receiver to get audio to play out of those outputs. Then, make sure you set the audio output to 'fixed' and if it is an option '0 dB'. If it is not an option, it may be properly set to '0 dB' by default.
Once you have zone 2 playing the same thing that zone 1 is playing, you should be able to record it and it should act as a proper connection for recording to your CD-R deck.
Not that I've had any need to record anything to a CD in ages, but that is the way it would be done.