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OPERATIONAL CHECK. Continued - TM-11-5820-890-30-5_246
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TM-11-5820-890-30-5 Ground Non-Icom Radio Sets Consisting of: Receiver-Transmitter Radio RT-1439/VRC (NSN 5896-01-195-0827) Manual
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OPERATIONAL CHECK. Continued - TM-11-5820-890-30-5_248


TM 11-5820-890-30-5 3-17. OPERATIONAL CHECK. Continued Step  10.  POWER  SUPPLIES  TEST. CONNECT EQUIPMENT AS SHOWN IN FIGURE 3-7. Action a.  Connect  DMM  (+)  probe  to  UUT  SYS  con- nector  pin  V  and  DMM  (-)  probe  to  TP12. b.   Set   test   adapter: 28   V:   ON. c.  Connect  DMM  (+)  probe  to  UUT  SYS connector  pins  X  and  x. d.  Connect  DMM  (+)  probe  to  UUT  SYS connector  pin  W. e.   Set   test   adapter: 13   V:   ON. f.  Connect  DMM  (+)  probe  to  UUT  SYS connector  pin  Y  and  y. g.  Connect  DMM  (+)  probe  to  UUT  SYS connector  pin  w. h.  Connect  DMM  (+)  probe  to  UUT  SYS connector  pin  Z. i. Set   test   adapter: LOGIC:   2 28 V: OFF. j. Set  DMM  to  measure  resistance. Connect  DMM  (+)  probe  to  UUT  SYS connector  pin  U. k.  Connect  DMM  (+)  probe  to  UUT  SYS connector  pin  T. Response a.  DMM  reads  26.5  to  28.5  V  dc.  If  not, go  to  chart  6. b.  DS1  lights.  If  not,  go  to  chart  7. c.  DMM  reads  26.5  to  28.5  V  dc.  If  not, there  is  an  open  in  the  wiring  between connector  J15  and  pins  J11-X  and  x. d.  DMM  reads  6.25  to  7.25  V  dc.  If  not, go  to  chart  8. e.   No   response. f.  DMM  reads  12.25  to  13.75  V  dc.  If  not, go  to  chart  9. g.  DMM  reads  4.75  to  5.25  V  dc.  If  not, go  to  chart  10. h.  DMM  reads  1.35  to  1.65  V  dc.  If  not, go  to  chart  11. i. No  response. j. DMM  reads  less  than  1  ohm.  If  not, go  to  chart  12. k.  DMM  reads  less  than  1  ohm.  If  not, go  to  chart  13. 3-36


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