Mark Levinson 31 Manual page 27

Connecting the
AC power cord
Main power switch
PRECAUTION
Connect the AC cord to the AC power cord socket on the rear
panel of the Nº31 (see "Rear panel"), then connect the AC cord
to the AC mains.
To Nº31
1
3
12. Set the main power switch to the "|" (on) position; the standby LED
on the Nº31 will light. Allow the Nº31's circuitry to stabilize for
several minutes, then connect all associated equipment to the
AC mains and activate it.
Never operate the main power switch without first making
sure that power is turned off to your receiver, integrated
amplifier, or preamplifier/power amplifier.
Note: The Nº31 won't achieve its sonic potential right away —
sonic performance is close to the optimum after 350 hours (or
about two weeks of normal use). For the best performance,
you may leave the main power switch on at all times, except
when you won't be using your Nº31 for a long period. (See
"Important Safety Instructions").
The Nº31 may be turned on and off without significantly
affecting its longevity. When it is turned on after being left
turned off, allow about one hour before expecting optimal
sonic performance.
To AC mains
2 1 2
3
1 = Line (hot)
2 = Neutral
3 = Earth ground
27