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 TM 55-1905-219-14-8
4-5. GENERAL (Continued).
Table 4-20. Public Address Set, AN/PIC-2 Troubleshooting.
NOTE
Refer to paragraph 4-46.3 for loud hailer maintenance instructions.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
No sound from reproducer when operating trigger switch.
Switch operation produces slight click.
Open battery contact springs.
Defective microswitch.
Battery dead.
Open circuit in wiring.
Open circuit in driver unit.
Defective transistor.
Toggle switch defective.
2.
Click but no speech reproduction.
Sound at microphone should be heard in speaker.
Defective microphone unit.
Open wiring.
Defective volume control.
Defective transistor.
Defective transformer.
3.
Acoustic howl at all settings of volume control.
No howling with volume control turned down.
Low side of volume control open.
4-78
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