MAINTENANCE
MAINTENANCE
Repairs or servicing not covered in
this
manual should
only
be
performed
by
qualified
personnel
as
described in
the
80
Series
Service Manual (P/N 834168).
General
Maintenance
Periodically wipe
the
case
with a
damp
cloth and detergent
(do
not
use
abrasives or solvents). If the input alert is falsely
activated by moisture:
1
.
Turn the multimeter
off
and
remove all
test
leads.
2. Shake out
the
input
receptacles.
3.
Use
a clean swab in
each
of the four terminals to
dislodge and clean out the
contamination.
4.
Soak a new
swab with the cleaning
and oiling agent
WD40. Work
this
swab around in the A and
mA
//A
terminals. Since
the oiling agent insulates
the terminals
from
moisture-related shorting, this
preventive treat-
ment
ensures
against future erroneous
Input Alerts.
Calibration
Calibrate your meter once a year to
ensure
that it performs
according
to
its specifications. Contact the nearest
Service
28
Center or
refer to the
80
Series
Service
Manual
for
calibration
procedures.
For replacement
parts, seethe
parts
list at the
end
of this manual.
WARNING
TO
AVOID
ELECTRICAL SHOCK,
REMOVE
THE
TEST LEADS
AND
ANY INPUT SIGNALS
BEFORE REPLACING
THE BATTERY
OR
FUSES. TO PREVENT DAMAGE OR INJURY,
INSTALL ONLY QUICK ACTING FUSES WITH
THE AMP/VOLT RATINGS SHOWN IN FIGURE
5.
Battery
Replacement
The
meter
is
powered by a
single
9V
battery (NEDA
1604,
6F22,
or006P). Referring to Figures,
use the
following
procedure
to
replace the battery:
1.
Disconnect test leads
from
any live source, turn the
rotary
switch to OFF,
and remove the test leads from
the
front
terminals.
2.
The
case bottom is secured to the case top by three
screws and two internal snaps (at the
LCD
end).
Using
a
Phillips-head
screwdriver, remove the three screws
from the case bottom and turn the case
over.
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