Search the Files Section for Layouts and IR Codes or Learn them from the Original Remote.
[Link: remotecentral.com]

For help see the Unofficial Philips Pronto & Marantz RC5000 Intelligent Remote Control FAQ.
[Link: remotecentral.com]

Marantz 4200 5.1 AV Amp.
[Link: us.marantz.com]

Cheers
Jason