Hi Tkrug,
I had gone to the setup mode but couldn't find any menu for callibrating the screen. Also I am sure it blanks out because even after pressing any button the screen does not come on. Infact it hangs sometimes. Even the minus button for year adjustment does not work.
The marantz store sales person admitted to the fault.
Is it advisable to download the setup files & update it on the remote. Acutually I don't know much about setting it up but I guess I don't have any option.
Thanks a lot Tkrug for your quick reply, if there is any way around then please let me know.

cheers,
nitin