TM 11-5820-890-30-4
12-23. OPERATIONAL CHECK. Continued
Step 5. COMSEC ALARM TEST. Continued
Action
b.
c.
d.
e.
Adjust RCU: VOL switch.
Disconnect W8 cable from RCU AUD/FILL
connector and connect to RCU AUD/DATA
connector.
Set KYK-13 FUNCTION switch to OFF.
Connect W13 cable from KYK-13 to RCU
AUD/FILL connector.
Step 6. COMSEC VARIABLE LOAD TEST.
SET:
KYK-13:
FUNCTION Switch: ON
SELECT Switch: 1
Action
a. Press RCU: LOAD/0 key.
Response
b.
c.
d.
e.
Volume of constant alarm tone heard in
handset varies. If not, the audio flex
assembly (19A13A1W3) is bad.
Constant alarm tone is
If not, go to chart 23.
No response.
No response.
heard in handset.
Response
a. RCU display reads:
Then, the RCU display reads:
If not, go to chart 24.
12-33