Advertisement
Carefully
replace
the back onto
the front
of the
case.
Tighten
the
screws.
Do not tighten
them excessively,
or
you
will
strip
the threads
in the case.
CONTROLS
AND JACKS
RANGE
switch:
Select factor and range to be measured.
V-fl.-A slide
switch:
Meter pointer
indicates
DC or AC voltage
or DC cu rrent
on
range selected
by RANGE
switch,
when
slide switch
is set to the V-fl.-A position.
Meter
pointer
indicates
one half the voltage
or current
on range
selected
by RANGE
switch,
when
slide switch
is set
to
the V-A/2
position,
OHMS
ADJ. control:
Use to set pointer
to
0 (extrema
right on
meter
scales)
on uppermost
ohmmeter
scale
in
an
OHMS
setting
of
the RANGE
switch,
when test leads are in contact
with each other.
Mechanical
adjust:
Adjustable
screw
on meter
movement
to
set
pointer
to zero when
leads
are in contact
with
each other
in a DCV setting of the RANGE
switch.
8
COM jack:
Plug-in connection
for black, negative test
lead.
Ef>V-fl.-A jack:
Plug-in connection
for red, positive
test
lead,
1000V
DC jack:
Plug in connection
for red
test
lead when
measuring
DC to 1,000 volts.
RANGE switch
must
be set
to
the 250 & 1000
DCV position
and V-fl.-A slide switch
must
be set to the
V-fl.-A
position.
Voltage
will
be 1/2 that
noted
on
meter
(to 500
volts) if
the V-rl.-A slide
switch is
set in the
V-A/2 position.
BAT_ jack:
Plug-in connection
for red, positive
test lead
when
testing
batteries,
RANGE
switch
must
be set to
BAT.
CHECK
and
slide
switch
must
be set
to
the
wanted
position.
-4-
OPERATING
PROCEDURE
PRELIMINARY
ADJUSTMENTS
1.
Check
the mechanical
adjustable
screw
setting
as
follows:
a.
Place the
Sears 5205
tester flat
on a
bench:
b.
Set the
RANGE
switch
to
2.5 DCV.
The
V-fl.-A slide
switch
can be set in
either
posi ti
on.
c.
Connect
one
test lead to the other,
d,
Note
if the
meter
pointer
indicates
exactly
0 at the
extreme
left end
of the
black
scales.
e.
If it does not read
0, turn
the screw on the meter
move-
ments slowly until
the
proper 0 reading is
realized.
2. Check the batteries
as
follows:
a
Place one test lead in
contact
with the
other.
b.
Set the RANGE
switch
to R
x
1.
c.
Turn the OHMS
ADJ_
control
until you fi nd the position
where the pointer
indicates
the
full scale 0 on
the
OHMS
scale.
If this
adjustment
cannot
be
made, replace the 1.5
volt size" AA"
cell.
d.
Now set the RANGE switch to R
x
10K.
e.
Turn the OHMS
ADJ_
control
until
you find the position
where
the
meter
pointer
indicates
full scale
0 on the
OHMS scale
..
If
this adjustment
cannot
be
made, replace
the
9-volt battery.
OPERATING
SUGGESTIONS
1. Meter
ranges
are noted
on the
front
panel,
arou nd the
RANGE
switch.
DC and AC voltage
as
well
as DC current
ranges
selected
through
use of the
knob
on the
RANGE
switch
are
those
shown at this switch
only
when the V-fl.-A
slide
switch
is
in the
V-fl.-A
position.
In this
case,
the
sensitivity
of
the voltmeter
is 25,000
ohms/volt
DC and
-5-
Advertisement
