LG 42LD450C Owner's Manual page 58

WATCHING TV CHANNEL CONTROL
i.e)
-q
db
"1"
Z
d_
-q
CD
I
Z
Z
F-
0
Z
-q
_0
0
F-
Except 32/42/47LD420,
32/37/42/47LD450,
37/42/47LD450C,
32/42/47/55LD520
58