Sharp LC-55LE643U Mode D'emploi page 43

Troubleshooting
Having trouble completing setup?
Don't worry: it's usually an easy fix.
If you cannot see a picture on
your TV:
Make sure your TV is turned
on. (This tip could save you
some embarrassment.)
Make sure the video input
on your TV or home theater
receiver is set to match the
output (usually HDMI or MHL)
used with the Roku Streaming
Stick. Most TVs have an Input
button on the remote control
to change video inputs.