Sony KE-42M1 Operating Instructions (primary manual) Operating Instructions Manual page 20

Preventing the TV from Falling Down
After connections with antennas and other equipment are completed, be
sure to attach the supplied clamp screws to the rear of the TV, and pass
a sturdy cord or chain and attach it to a wall or pillar.
1
Remove one of the two screws at the rear of the TV, then attach the
supplied clamp screw to the screw hole.
2
Repeat step 1 to attach the other clamp screw.
3 Attach a sturdy cord or chain securely to each clamp screw, and attach
the cord or chain to a wall or pillar.
2O