TM 11-5820-890-30-4
12-23. OPERATIONAL CHECK. Continued
Step 15. ZEROIZE COMSEC VARIABLE (1-5) TEST. Continued
Action
b.
c.
d.
Set RCU:
CHAN: 2.
Set test adapter:
PTT: UUT, and then OFF.
Repeat step b. for CHAN 3 through 5.
Set RCU:
CHAN: 6.
Set test adapter:
PTT: UUT, and then OFF.
Action
a. Set RCU:
COMSEC:
Wait at least 5 seconds.
Set RCU:
COMSEC: CT.
Set test adapter:
PTT: UUT, OFF, UUT, and OFF.
Response
b.
c.
d.
Constant alarm tone is heard in handset.
If not, the COMSEC module (19A11) is bad
Constant alarm tone is heard in handset
for each channel. If not, the COMSEC
module (19A11) is bad.
Alarm tone stops. If not, go to chart 46.
Step 16. ZEROIZE COMSEC VARIABLE (6) TEST.
Response
a. Constant alarm tone is heard in handset.
If not, go to chart 47.
12-43