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TM 11-5820-890-20-2
5-7
5.2.
OPERATIONAL CHECK. Continued
STEP 3. RT SELF TEST:
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
3.1
Set RT COMSEC to CT
Set RT FCTN to TST
RT passes self test?
YES:
Go to Step 3.3
NO:
Disconnect cables/HS from RT;
rerun self test, go to Step 3.2
3.2
Connect CX 13314 to RT AUD/
DATA J4. Connect HS to RT AUD/
FILL J3
RT then passes self test?
YES: Reconnect cables/HS;
go to Step 3.3
NO:
Replace RT
Audio heard at HS or LS 671?
YES: Go to Step 3.3
NO:
Go to TS Chart 6
3.3
Set FCTN to LD
Set CHAN to MAN
Set DATA to OFF
RT display reads 30000?
YES: Continue
NO:
Replace RT
COMSEC alarm heard at
HS/loudspeaker?
YES:
Go to Step 3.4
NO:
Replace RT
3.4
Press PTT twice
COMSEC alarm clears?
STEADY TONE MUST BE HEARD
**
YES: Go to STEP 4
NO:
If no external devices,
replace RT
NO:
If using external devices,
go to TS Chart 7
STEP 4. LOAD CHECKS:
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
4.1
Load RT with SC frequencies:
Chan 1:
41000
Chan 2:
54000
Chan 3:
75000
SC frequencies load properly?
YES: Go to Step 4.2
NO:
Replace RT
4.2
Set RT MODE to FH
Load COMSEC and FH
data in RT*
RT accepts fill?
YES: Go to Step 4.3
NO:
Go to TS Chart 8
4.3
Load test sync time (82/09:36)
Test sync time loads properly?
YES: Go to Step 4.4
NO:
Replace RT.
4.4
Set RT to STBY
RT shuts down properly?
YES: Go to Step 4.5
NO:
Replace RT
4.5
Set CB1 to OFF Wait 1 min.
Set CB1 to ON
Set FCTN to SQ ON
N/A
N/A
RT retains COMSEC, FH, and SC
data in both FH and SC modes?
N/A
N/A
YES: Go to STEP 5
NO:
Replace RT
* NOTE: If using an Automated Net Control Device (ANCD), follow ICOM Fill procedure to load COMSEC keys
and FH data in all 6 channels. Otherwise, load COMSEC keys and FH data in Channels 1, 2, and 3.
** If RT-1523C is present go to step 4. RT does not transmit a beeping tone and will have a steady tone at
power up.
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