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Co-Operator
TROUBLESHOOTING
5-3
Noise
pumped
up
during pauses:
The GATE THRESH
controls arc
probably
set
too low.
See
"Example
Control
Settings"
beginning
on
page
3-4.
Audible
distortion:
First
make
sure
that
the
program
material presented
to
the
Co-Operator's
inputs
is
clean
and
distortion-free.
If
the
gain reduction
meters' red
segments
are
lighting,
reduce
the
amount
of gain
reduction.
See
Section
3,
especially the discussion
of "Leveling and compression"
on
page
3-8.
If
distortion
can
still
be
heard,
check
if
the clipping bias
has
been
adjusted
below
±5.5VDC
(see step
5
on
page
2-10).
Such
a clipping bias
will
introduce
slight
audible
distortion
on some program
material.
Measure
die clipping bias
at test
points
TP2
(-)
and
TP3
(+)
with
jumper
A
in
the
"OPERATE"
position.
CLIPPER BIAS trimmer
R2
adjusts the
bias.
(See
assembly drawing
in
Section
6
for locations
of components).
Technical Support
If
the
above
troubleshooting procedures don't help
you
solve
your problem,
contact
Orban Customer
Service.
Be
prepared
to accurately
describe the
problem,
including
the
results
of
diagnostic
tests
you have
performed.
Know
the
serial
number
of
your
464A.
Telephone:
(1)510/351-3500
or
Write:
Customer
Service
Orban
or Fax:
(1)510/351-0500
a
division
of
AKG
Acoustics,
Inc.
1525 Alvarado
Street
San
Leandro,
CA
94577
USA
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