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Page Title: OPERATIONAL CHECK. Continued
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TM 11-5820-890-30-5 2-29. OPERATIONAL CHECK.  Continued Step  6.  RF  OUTPUT  CHECK. Action a. Connect RF probe to DMM and RF DET. Set  DMM  to  50  W reference. Set UUT RT: RF: HI CHAN: MAN FCTN: SQ ON MODE: SC. b.   Set   PTT:   UUT. Set  CHAN  switch  to  each  position. c. Observe SIG display. d.  Set  UUT  RT: RF: PA. e.  Set  UUT  RT: RF: M. f. Observe SIG display. g.  Set  UUT  RT: RF: LO. h.   Observe   SIG   display. i. Set UUT RT: RF: M. Set  RF  SWITCH:  2. 2-36 Response a. No  response. b.  DMM  reading  is  35  to  39  dBm  for  all channels.  If  not,  go  to  chart  15. If RT display goes blank when PTT is set to  UUT,  replace  the  exciter/power  ampli- fier  (1A11)  and  repeat  step  6  b. If  UUT  passes  step  6  b,  the  removed exciter/power   amplifier   (1A11)   is   bad. If  UUT  fails  step  6  b,  the  power  supply (1A3)  is  bad. c. SIG  display  reading  is  5,  6,  or  7.  If  not, go  to  chart  16. d.  DMM  reading  is  35  to  39  dBm.  If  not, go  to  chart  42. e. DMM  reading  is  20  to  24  dBm.  If  not, go  to  chart  17. f. SIG  display  reading  is  2,  3,  or  4.  If  not, the  display  circuit  card  assembly (1A16A1A1)  is  bad. g. DMM reading is  -7  to  +1  dBm.  If  not, go  to  chart  18. h.  SIG  display  reading  is  0  or  1.  If  not, the  display  circuit  card  assembly (1A16A1A1)  is  bad. i. No  response.


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