How do I fix a registration problem on Hitachi projection tv?

My Hitachi projection TV's registration is out and the magic focus doesn't work (it stops part way thru) and I get a 4 up in the lower right hand corner...I presume a repair code. This just happened tonight when I turned on the TV.

Answer:
Go to Hitachi.com. Also, you need to upgrade. Rear projection is a postage stamp of technology compared to the 1080p LCDs that are being sold now. The prices have come down a lot.

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