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 TM 9-2350-222-20- 1-2
USE OF
OR ME-77 C/U MULTIMETER
(Continued)
CONTINUITY TEST.
NEEDLE JUMPS OR
q IF
FLICKERS; CIRCUIT HAS A
LOOSE CONNECTION.
q IF NEEDLE MOVES TO
RIGHT BUT NOT TO ZERO,
LINE
NEEDLE
THE CIRCUIT HAS
SHOWS
NEEDLE
IS A RESISTANCE OF LESS
THAN 1 OHM.
POSITION
FAR RIGHT
1
(OVER GREEN
ZERO MARK ON
UPPER SCALE)
` Check if needle swings to far right (over green
zero mark on upper scale).
Set
selector switch to the scale indicated in
q
your troubleshooting procedure.
I SELECTOR
SWITCH
Zero meter (page 4-35)
q
WARNING
De-energize circuits as indicated in
your troubleshooting procedure.
\
s
Connect meter probes to circuit under test as indicated
q
in your troubleshooting
Observe meter needle.
q
Does needle swing to far right (over green zero
mark on upper scale)?
CIRCUIT UNDER TEST
Meter doea not indicate
Meter indicates continuity.
continuity.
4-42
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