Ricoh Aficio 3131 Operator's Manual page 223

In accordance with IEC 60417, this machine uses the following symbols for the main power switch:
: means POWER ON.
: means STAND BY.
(When the optional heater for preventing condensation is installed, the current is supplied to the
heater.)
Printed in Japan
SDC531/CS331/LC031/Aficio Color 3131
OME030054A0