Error code 2 on a Leica DMR monitor - source and solutions?

Good morning. Has anyone ever run into the Error 2 code on the monitor of a Leica DMR unit? The unit will power-up and display the Leica splash screen and then the Error 2 message covers the screen, and the shutter will not activate - though all other functions of the unit are available ( menu access and settings are available as are the setting for ISO, USER, Moire, etc.) Before I start disassembling I was hoping to find someone "who has been down this road before". No schematics are available online and no-one seems to want to talk about prior repairs or disassembly on any of the pertinent user group threads.

Best regards,

Peter Stevens