Question about Panasonic PT-53WX54 53" Rear Projection HDTV

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Panasonic HD Projection TV PT-53WX54J Linearity Help

The vertical linearity on this TV is out of adjustment. images across the bottom of the screen are quite squashed vertically. Does anyone know how to access the service menu?

I found info on the WX53 series but it does not seem to apply to the WX54.
Thanks, John.

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