JVC Black Sapphire SL42B-C User Manual page 11

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Special formats that do not use the entire screen. For example:
viewing letterbox style (16:9) media on a normal (4:3) display
(black bars at top and bottom of screen); or viewing normal style
(4:3) media on a widescreen (16:9) display (black bars on left and
right sides of screen).
The following symptoms are not signs of malfunction but
technical limitations

LCD panels are manufactured using an extremely high level of
precision technology; however, sometimes parts of the screen may
be missing picture elements or have luminous spots. This is not a
sign of malfunction.

Do not install the TV near electronic equipment that produces
electromagnetic waves. Some equipment placed too near this unit
may cause interference.

Effect on infrared devices – There may be interference while using
infrared devices such as infrared cordless headphones.
Important Safety Information
Television Antenna Connection Protection
External Television Antenna Grounding
If an outside antenna/satellite dish or cable system is to be connected
to the TV, make sure that the antenna or cable system is electrically
grounded to provide some protection against voltage surges and static
charges.
Article 810 of the National Electrical Code, ANSI/NFPSA 70, provides
information with regard to proper grounding of the mast and
supporting structure, grounding of the lead-in wire to an antenna
discharge unit, size of the grounding conductors, location of antenna
discharge unit, connection to grounding electrodes, and requirements
of the ground electrode.