Specifications

TM 11-5820-670-30
2-26. TROUBLESHOOTING CHARTS. (CONT)
CHART 2-8
Poor Audio Response Troubleshooting
(Sheet 1 of 2)
CONNECT EQUIPMENT AS
SHOWN IN AUDIO-FRE-
QUENCY RESPONSE
PERFORMANCE TEST (PARA
2-6).
CONNECT THE TS-723B/U TO
TEST POINT TP4007 ON IF.
AMPLIFIER ASSEMBLY
A4000. SEE ILLUSTRATION,
SH 2.
CHECK AUDIO RESPONSE AT
TP5513 0N ASSEMBLY A5500.
SEE ILLUSTRATION, SH 2.
CHECK AUDIO RESPONSE
AT TP5509 0N A5500. SEE
ILLUSTRATION, SH 2.
REPLACE AUDIO AND
SQUELCH PREAMPLIFIER
MODULE A4300 (PARA 2-41).
PERFORM AUDIOFRE-
QUENCY RESPONSE AND
FRONT PANEL METER
PERFORMANCE TEST
(PARA 2-6).
REPLACE AUDIO AMPLIFIER
MODULE A5400 (PARA 2-44).
ALINE (PARA 2-30).
REPLACE LOW PASS FILTER
FL5001 (PARA 2-44).
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