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SECTION V
MAINTENANCE
5.1
GENERAL
The Model 562
is
an all
solid-state unit, ruggedly constructed
with only the highest quality components.
As such, it should
provide years
of
trouble free use with normal
care.
All parts used
are
conservatively rated
for their application, and
workmanship
meets
the
rigid standards you have learned
to
expect
in
UREI
products
.
NO SPECIAL PREVENTIVE MAINTENANCE
IS
REQUIRED.
5.2
REPAIRS AND WARRANTY
The Model 562
is
factory warranted
to the
orignal purchaser
against defects
in
material
and
workmanship
for one
year after
initial purchase.
This limited warranty must be activated
at the
time of purchase by returning the registry portion
of the
Warranty
Card to the factory.
Should
a
malfunction ever
occur, the dealer
from whom the unit was purchased will
be
glad
to
handle return
for
factory repair; alternately, for prompt service, ship
the
unit
prepaid directly
to the factory.
Be sure it
is
well packed
in
a
sturdy carton, with shock-absorbing material such
as
foam rubber,
styrofoam pellets
or "bubble-pack"
completely filling
the remaining
space.
Particular attention should
be
paid
to
protecting
the
controls
and
switches.
Tape
a
note
to the top of the
unit
describing the malfunction,
and
instructions for return.
We will
pay one-way return shipping costs on any in-warranty repair.
Because
of
specially selected components
in
this product, field
repairs are not authorized during
the
warranty period,
and attempts
to
perform repairs may invalidate
the
warranty.
5.3
SERVICE ADJUSTMENTS
These controls have been carefully set
at the
factory and
should not require adjustments except after service work.
5.3.1
COMMON MODE BALANCE
The internal trimpot Rl affects
the
COMMON MODE BALANCE.
If a
check or
an
adjustment
is
necessary
the
following procedure
should
be followed:
Connect
the "±" and "COM" input
terminals together
and
apply
an input signal between this
connection
and the
GND terminal
(100 Hz,
3
V
rms)
.
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17
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