Hi I've got a Sony AV-3000, and a Sony FM Stereo/Fm-Am Receiver STR-KP
how do I get it to learn the function controls for this receiver. and which button on the AV-3000 should I assign it to. Thanks in advance.
David

You can put it on any button you want, but most people used the amp button. When you assign the preset code for Sony receivers, 4001, it automatically makes that screen the amp screen.

Page 19 of the manual deals with the learning function, which is how you get to learn your other remotes commands on the 3000.
Commander off/component key
press a button
learn to it

Your question, and many others which may come up, will be answered somewhere in the following threads.

RM-AV3000/3100 NEWCOMER’S PACKAGE-WELCOME-CHECK THESE OUT (IF YOU HAVEN’T ALREADY DONE SO) AND SAVE YOURSELF SOME PROBLEMS

SYSTEM CONTROL KEYS: Everything you need to know about them

HOW TO LABEL, CHANGE OR HIDE BUTTONS

CHANGING BATTERIES (May not be necessary on RM-AV3100, but why take a chance when it's only 20 seconds?)

AND IF YOU HAVE A SONY RECEIVER:
HOW TO CHANGE YOUR RECEIVER AND REMOTE TO AV1 (or AV2) COMMAND MODE

AND HERE IS SOME MORE INFO IN CASE THE MANUAL GETS TOO CONFUSING

REMOTE CENTRAL RM-AV3000/RM-AV3100 FORUM REVIEW (INCLUDING THE QUICK PROGRAMMING GUIDE)

ALSO, CHECK OUT THE TIPS AND TRICKS SECTION.