Here is a diagram from the Sony page showing how to connect a VHS and DVD recorder.
http://www.sonydigital-link.com/tv/tutorials/c onnectivity/connection_sd.aspx?l=en&d=o3&fd=TV 2S,VCR,DVDR.
See number 5, this is a scart lead coming from the VHS to the DVD.
See number 4, this is a scart lead coming from the DVd to the TV.
In the section TO USE near the bottom it says:
"To record from your VCR, using the input select on your DVD Recorder's remote control, select Line 3 then follow the instructions in your DVD Recorder's instruction manual on how to record"
So it looks like you use L3.