12-23. OPERATIONAL CHECK. Continued
TM 11-5820-890-30-4
Step 2. SELF-TEST. Continued
Action
f. Set RCU:
FCTN:
Step 3. ICM TEST.
Action
a. Set RCU:
FCTN: ICM
COMSEC:
Response
f.
RCU display reads:
If not, go to chart 8. Then, the RCU
display reads:
If any dots are not lit, the display CCA
(19A13A1A1) is bad. If RCV SIG and HUB
LOW are not lit and RCU display reads:
go to chart 9. Then, the RCU display
reads:
If not, go to chart 10.
Response
a. RCU display reads:
If not, go to chart 11.
12-29
