TM   11-5820-890-20-1 3.1. OPERATIONAL   CHECK.   Continued STEP  3.  RT  SELF-TEST: STEPS TO PERFORM 3.1 Set RT COMSEC to CT FCTN  to  TST 3.2   Set   RT: FCTN  to  LD CHAN  to  MAN DATA  to  OFF 3.3 Press  PTT  twice External devices (LS 671 Speaker) STEP  4.  LOAD  CHECKS: CHECKS  TO  MAKE N/A RT display reads FAIL 6? RT passes self-test? RT now passes self-test? N/A N/A RT display reads 30000? COMSEC alarm heard at HS/loudspeaker? (For   RT-1523/A/B/D) Steady tone heard at HS/loudspeaker?* (For   RT-15230 Steady tone is heard ACTIONS TO TAKE N/A NO: Continue 1 YES: Go to TS Chart 8 YES: Go to Step 3.2 NO: Disconnect all cables from front of RT; rerun self-test YES: Reconnect all cables to front of RT and go to Step 3.2 NO:   Replace   RT N/A N/A YES:   Continue   1 NO: Replace  RT YES: Go to Step 3.3 NO: If no external devices, go to TS Chart 9 NO: If using external devices, go to TS Chart 10 YES: Go  to  STEP  4 NO: If no external devices, go to TS Chart 9 NO: If using external devices, go to TS Chart 10 YES: Go  to  STEP  4 NO: If no external devices, go to TS Chart 9 NO: If using external devices, go to TS Chart 10 STEPS TO PERFORM CHECKS  TO  MAKE 4.1 Load RT with SC frequencies: SC  frequencies  load  properly? Chan  1: 4 1 0 0 0 Chan  2: 54000 Chan  3: 75000 4.2 Set RT MODE to FH and load RT accepts fill? RT with COMSEC and FH data* Go to TM 10-6 page 7, Task 2. 4.3 Load test sync time (82/09:36) Test sync time loads properly? 4.4 Set  RT  to  STBY RT shuts down properly? ACTIONS  TO  TAKE YES: Go to Step 4.2 NO:   Replace   RT YES: Go to Step 4.3 NO: Go  to  TS  Chart  11 YES: Go to Step 4.4 NO: Replace RT YES: Go to Step 4.5 NO:   Replace   RT 3 - 4