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Page Title: OPERATIONAL CHECK. Continued
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TM 11-5820-890-30-5 5-10. OPERATIONAL CHECK.  Continued Step 1. SAFE TO TURN ON CHECK. Action Response a.  Read  DMM. a.  DMM  reading  is  greater  than  2  k  W. If  not, the  power  amplifier  case  (6A1)  is  bad. b.  Set  RESPONSE:  8.  Read  DMM. b.  DMM  reading  is  greater  than  2  k  W. If  not, the  decoder  control  (6A2)  is  bad. c.  Set  RESPONSE:  9.  Read  DMM. c.  DMM  reading  is  greater  than  5  k  W. If  not, go  to  chart  1. d.  Set  RESPONSE:  10.  Read  DMM. d.  DMM  reading  is  greater  than  50  k  W. If  not, the  decoder  control  (6A2)  is  bad. Step  2.  RF  OUTPUT  CHECK. Action Response a.  Connect  equipment  as  shown  in  figure  5-3. a.  No  response. Set  28  V: ON. Set RF SWITCH: 1. b.  Load  the  following  frequencies  into b.  No  response. the RT: CHAN FREQUENCY   (kHz) 1 87975 2 55000 3 33000 c.  Set  RT  CHAN:  1. c.  No  response. d.  Press  handset  PTT  switch.  Read  and d.  Recorded  DMM  reading  is  RT  channel  1 record  level  shown  on  DMM. RF power (RT 1). e.  Set  RT  CHAN:  2. e.  No  response. f.  Press  handset  PTT  switch.  Read  and f.  Recorded  DMM  reading  is  RT  channel  2 record  level  shown  on  DMM. RF power (RT 2). g.  Set  RT  CHAN:  3. g.  No  response. h.  Press  handset  PTT  switch.  Read  and h.  Recorded  DMM  reading  is  RT  channel  3 record  level  shown  on  DMM. RF power (RT 3). 5-7


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