Studio Technologies 761 - Manual (Page 14)

Issue 1, March 2008 Model 761/771 User Guide
Page 14 Studio Technologies, Inc.
for Surround
AC Mains Power
The Model 761 is internally confi gured
to operate from nominal 100, 120, or
220/240 V, 50/60 Hz. Units shipped to
North America are factory selected for
120 V operation. Units bound for Japan
are generally selected for 100 V while our
friends “down under” and in Europe re-
ceive units set for 220/240 V. Before con-
necting the Model 761 to AC mains power,
check to be certain that it is confi gured to
match the local mains voltage. Look on the
back panel (adjacent to the power entry
connector) for the factory-confi gured volt-
age. Note that an incorrect confi guration
could prevent operation or cause dam-
age to the unit. Should it be necessary to
change the unit’s operating voltage it must
be performed only at the factory, or by a
factory-authorized service technician.
The Model 761 uses an IEC-standard C14
connector to mate with the AC mains cord.
The AC mains cord should have a C13
socket. The wire colors should conform to
the internationally recognized CEE color
code and be wired accordingly:
Connection Wire Color
Neutral (N) Light Blue
Line (L) Brown
Protective Earth (E) Green/Yellow
Safety Warning: The Model 761 does
not contain an AC mains disconnect
switch. As such, the AC mains cord
plug serves as the disconnection de-
vice. Safety considerations require that
the plug and associated outlet be eas-
ily accessible to allow rapid disconnec-
tion of AC mains power should it prove
necessary.
As soon as AC mains power is applied,
the Model 761 Central Controller’s power
LED will light steadily. The two activity
LEDs may also light. The Model 771
Control Console will go through a power-
up sequence, lighting each LED in succes-
sion. Using its 4-digit display, the Model
771 will momentarily display both its, and
the Model 761’s, software revisions.