Pioneer PDP-V401 Technical Manual page 88

Mounting standard metal fixtures (PDK-4006)
7) Recommended ambient operating temperature (in the open state)
Angle: less than 5°
Operate at 0 to 35 °C.
(Do not cover the metal fixture or the sides of
the display main body.)
88
<Ver. 2.1>
Wall
May be used between 0 to 40 °C.
(Do not cover the metal fixture or the sides of
the display main body.)
5° or more
Wall
Angle: 5° or more