TM 11-5820-890-30-4
12-23. OPERATIONAL CHECK. Continued
Step 3. ICM TEST. Continued
Action
b. Set REF RT:
FCTN: REM.
c. Connect W8 cable from test adapter REF
AUDIO connector to REF RT AUD/FILL
connector.
d. While holding test adapter:
PTT: REF
press and hold REF RT: BAIT/CALL key.
(Release when response occurs.)
e. Set RCU:
SPKR:
Set test adapter:
RESPONSE: 2
RESP SEL: S2.
While holding test adapter:
PIT: REF
press and hold REF RT: BATT/CALL key.
(Release when response occurs.)
f. Set test adapter:
RESPONSE: 3
RESP SEL: S1
PIT: UUT.
Press RCU: BATT/CALL key.
Response
b. RCU display reads:
If not, go to chart 12. Handset is silent
(disregard occasional beeps). If not, go
to chart 13.
c. No response.
d. Undistorted two-tone alarm tone is heard
in handset. If not, go to chart 14. RCU
display reads:
If not, the control module (19A2) is bad.
e. Two-tone alarm tone is heard in handset.
If not, go to chart 15.
f. Two-tone alarm tone is heard in handset.
If not, go to chart 16. RCU display
reads:
If not, the control module (19A2) is bad.
12-30