MAINTENANCE
Fuse Test and
Replacement
3. Lift the input terminal end of the case top until it gently
unsnaps from the case bottom
at
the
end
nearest the
LCD.
4.
Lift
the
battery
from
the case bottom, and carefully dis-
connect
the
battery connector leads.
5. Snap the battery connector leads to the terminals of a
new
battery
and
reinsert the battery into the case bot-
tom. Dress
the battery leads so
that
they
will
not be
pinched
between the case bottom
and
case
top.
6. Ensure
that
the case top rotary
switch and circuit board
switch
are in the OFF position.
7.
Replace the
case
top,
ensuring
that the gasket is prop-
erly seated
and the
two snaps on the case top (at the end
near the
LCD) are engaged.
Reinstall the three screws.
Fuse
Test
Use
the following procedure to test
the internal fuses of the
meter.
1. Turn the rotary selector switch
to
hid n Ht-.
2. Plug a test
lead into the
VQ-w-
inputterminal and
touch
theprobetothe A inputterminal.
Because
the
recepta-
cles of the input
terminals contain
split
contacts,
be
sure
that
you
touch the probe to the
half
of the receptacle
contact
that is
nearest the LCD.
3. The
display
should
indicate
between
00.0
and 00.5
ohms.
This
tests
F2
(15
A,
600V). If the display
reads
OL
(overload),
replace the
fuse and test
again. If the
display reads any other value, have
the
meter serviced.
4. Move the
probe from the
A
input
terminal
to the
mAfjA
inputterminal.
5.
The display should indicate
between 0.995 kilohms
and 1.005 kilohms. This tests F1
(1A,
600V). If the
display
reads OL (overload), replace
the
fuse and test
again.
If the display reads any other
value, have
the
meter
serviced.
Fuse
Replacement
Referring
to Figure
5,
use
the following
procedure
to
examine
or replace the meter's fuses:
1. Perform
steps
1 through 3 of the battery
replacement
procedure.
2. Remove the defective fuse by
gently
prying
one end of
the fuse loose
and sliding
the
fuse out of the fuse
bracket.
30
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