I have a RV7, too. I managed to find a parts list and from the internet. I'll try to find it again and post a link.
EDIT: That wasn't too easy! Here is the parts list. I am not quite sure about the resistor in question, the PCB layout shows there should be two resistors, R1 (10 ohm, 0,33W) and R2 (0...220 ohm, 0,33W) connected in parallel, whereas in your photo there seems to be only one resistor (but visibly a place for the second).
The site itself also has some more B&O test-gear manuals. Could somebody ask if the site's keeper would allow those manuals being added to Beoworld's manuals section, too?
Bang & Olufsen - The art of controlling sound, picture and light