TM 11-5821-333-30
2-24. TROUBLESHOOTING FLOWCHARTS. Continued
CHART 31
SC RXMT Transmit Audio Failure (Sheet 1 of 3)
NOTE
U S E X 1 A T X A 5 - 1 0 .
READ SCOPE CH 1.
1. SET TEST ADAPTER;
PTT (S8)
OFF
CAL
IN
2. SET UP USING FIG 2-8.
3. SET UUT:
FUNCTION
RXMT
4. ADJUST FUNCTION GEN-
ERATOR FOR A 620 mV
P-P SINE WAVE AT 1 kHz
USE SCOPE CH 2 AND
FREQ COUNTER.
5. SET TEST ADAPTER:
S2
OFF
S3
3
TEST EQUIPMENT
SELECTOR
SCOPE
TEST EQPT
INPUT
EXT
CAL
OUT
6. USE X1 PROBE AT
XA5-21. READ SCOPE
CH1.
See figure FO-10 for
location of test points.
USE Xl PROBE AT XA4-10.
READ SCOPE CH 1.
CHASSIS (A11) IS BAD.
INTERFACE MODULE (A4)
IS BAD,
USE X1 PROBE AT XA4-28.
READ SCOPE CH 1.
2-137
