hifi engine

Technics SU-V2X saftey light.

Hi All,

Can anyone please tell me if the safety light on a Technics SU-V2X integrated amplifier should be on or off in normal operation. Ive just picked up a used one and am a little puzzled as to why the light is permanently on.

Also, if someone could find me a user manul for the same amp id be very grateful!

Many thanks all.