17. A troubleshooting chart lists the trouble symptoms and probable corrections. If a telephone transmits
properly but does not receive, a possible trouble is
a. an open resistor (L).
b. a shorted varistor (CR3).
c. a defective selector switch.
d. a defective press-to-talk switch.
18. For LB or CBS operation, the transmitter circuit of the TA-312/PT passes through contacts of three of the
four switches in the set. The switch that does NOT provide part of the transmitter path is
a. S1.
c. S3.
b. S2.
d. S4.
19. Many troubles are identified by measuring the resistance of components. An ohmmeter reading between
terminals 7 and 10 of Impedance Matching Network CU-350/PT will check the condition of
a. coil E.
c. winding C.
b. winding A.
d. resistor B.
20. The internal resistance of the generator (G-42A/PT) can be measured by connecting an ohmmeter to line
terminals 1 and 2. What preliminary action must you take to make this test?
a. Disconnect varistor CR3.
b. Set selector switch at LB.
c. Operate press-to-talk switch.
d. Turn handcrank to close contacts.
CHECK YOUR ANSWERS WITH LESSON SOLUTION SHEET # 3, PAGE 30.
410 L3
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