PART II. TROUBLE SHOOTING
TABLE II. TROUBLE SHOOTING
TROUBLE
PROBABLE CAUSE
REMEDY
FREQUENCY METER FAILS
Broken wires in leads or adapters
Repair wires
TO INDICATE
Broken connections on terminals
Resolder broken
"A", "B" or "C" of four pin receptacle
connections
Switch No. 1 faulty
Replace switch
Switch No. 5 faulty
Replace switch
Frequency meter damaged
Replace frequency
meter
MILLIAMMETER FAILS TO
Broken wires in leads or adapters
Repair wires
INDICATE
Broken connections on receptacles
Resolder broken
connections
Resistors defective
Replace defective
resistor
Switch No. 1 faulty
Replace switch
Switch No. 2 faulty
Replace switch
Switch No. 3 faulty
Replace switch
Rheostat faulty
Replace rheostat
Switch No. 5 faulty
Replace switch
PHASE ROTATION INDICATORS
Lamp defective
Replace lamp
FUNCTION IMPROPERLY
Capacitor defective
Replace capacitor
Switch No. 1 faulty
Replace switch
6-5. REPLACEMENT OF VOLTMETER.
6-2. GENERAL.
a.
Disconnect leads from terminals of meter (1).
Frequent
troubles,
probable
causes,
and
recommended remedies will be found in Table U,
b.
Unscrew nuts (2) and remove screws (3).
Trouble Shooting Chart.
c.
Remove meter (1) from face of panel (64).
d. Slide new meter In place. Attach to panel (84)
6-4. REMOVAL OF TESTER PANEL ASSEMBLY.
with screw (3) and nut (2).
The panel assembly, confining all circuit and component
parts, is removed from the case by taking out the four
e.
Connect all leads to meter terminals.
screws in the corners of the panel and lifting out of the
entire assembly.
6-6. REPLACEMENT OF FREQUENCY METER.
NOTE
a.
Disconnect leads from terminals of meter (4).
In replacing electrical components,
note the position and color code of
b.
Unscrew nuts (5) and remove screws (6).
the leads to be disconnected in order
to facilitate reconnection. All wiring
c.
Remove meter (4) from face of panel (64).
connections are shown in the
schematic diagram, figure 1-2.
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