•
that
the voltage changeover switch located inside the
unit
is
set
to the
appropriate
position
and
that
the
unit
is
appropriately
fused: 3/4 A
for
115V,
3/8 A
for
230V.
See
section
1.5
for
voltage changeover
instructions.
But
beware
that
voltages
are
normally
set
at
the factory
and
should not
be
changed except
by
a
qualified
service
technician.
The
unit
will
draw
a
maximum
of
35
Watts
and
will
tolerate
line
voltage
variations
of
+10%.
1.5
VOLTAGE
CHANGEOVER
The
M.93
can
be
set
to operate
at
either
115V,
50-60Hz
or
230V,
50-60Hz
+10%.
The
voltage
set
at
the factory will
be
indicated
on
the
rear
panel.
To
change the operating voltage,
first
remove
the
power
cord to avoid con-
tact
with
power
line
voltages.
Remove
the top cover screws
and
the top
cover. Locate the
clear
plastic
High
Voltage protection
shield
in the
front
left
hand
corner (facing the
unit)
through
which
the voltage changeover
switch can
be
viewed.
First
look to
verify
that
the switch
does
not indicate
the desired voltage.
If
not then
remove
the
plastic
shield
by
depressing
each (one
at
a time)
of
the small locking barbs
on
the three nylon standoffs
while simultaneously
lifting
the
shield
at
the nearest corner.
The
barb
can
be
depressed with a small
pliers
or
screwdriver.
Change
the fuse,
F2,
located beneath the
shield
to a type
3AG
3/8
Amp
slow
blow
for
230V
operation
(or
to
3AG
3/4
Amp
slow
blow
for
115V
operation).
Then
flip
the voltage
changeover switch, S6, to expose the
correct
voltage
setting
(230
or 115).
Snap
the
insulating
plastic
shield
back
onto the nylon standoff
making
sure
that
all
the barbs lock in place.
Refit
the cover.
Finally,
plug in the
power
cord,
and
verify
correct
operation.
1.6
CONNECTOR
REQUIREMENTS
Standard versions
of
M.93
require
male
3 pin
XLR
connectors to
mate
with the
two
inputs:
11
INPUT
11
and
11
AUX
INPUT
11
•
The
MASTER
OUTPUT
requires a female
3 pin
XLR
connector.
All
other
rear
panel connections require
~~~
standard
phone
plugs.
An
optional version uses
tip/ring/sleeve
type
~~~
phone
jacks
for the
two
inputs
and
main
output instead
of
XLR
connectors.
J
7
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