Mitsubishi WS-73909 Owner's Manual page 76

Appendix D: Cleaning and Service
Service
If you are unable to correct a problem with
your TV, consult your Mitsubishi dealer or a
Mitsubishi Authorized Warranty Service Center.
DO NOT adjust any controls other than
those described in this Owner's Guide.
DO NOT remove the protective back cover
of your TV.
Menus not described and shown in this owner's
guide are designed for Factory use and for
Authorized Service Personnel. Damage caused
to the TV by non-authorized changes or
changes made by non-authorized persons are
not covered under warranty.
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For further assistance, please call
(800) 332-2119