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Page Title: OPERATIONAL CHECK. Continued
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TM 11-5820-890-30-5 6-13. OPERATIONAL CHECK.  Continued Step 1. SELF-TEST. Action a.  Connect  equipment  as  shown  in  figure  6-7. b.   Set   28   V:   ON. c.  Check  DIM  control  operation  by  adjusting it  ccw  and  then  cw. Step  2.  OUTPUT  CHECK. Action a.  Read  scope  CHAN:  A. T:   0.2   ms/DIV   V:   0.2   V/DIV b.  Set  RESPONSE:  9. Read  scope  CHAN:  A. c. Set RESPONSE: 10. Read  scope  CHAN:  A. Response a. b. All No  response. Control-monitor   repeats   self-test   every 5  seconds.  All  display  segments  light for  3  seconds  and  then  “Gd”  is  displayed for  2  seconds. IF THEN display   segments Go  to  chart  1. do  not  light. Any  display  segment Control-monitor does  not  light. front  panel  (7A1) is bad. Display  is  stuck  with  all Go  to  chart  2. segments   lit. "F1"   is   displayed. Microcontroller (7A2)  is  bad. "F2"   is   displayed. Go  to  chart  3. c.  Ccw  dims  the  display,  and  cw  brightens the   display.   If   not,   the   control-monitor front  panel  (7A1)  is  bad. Response a.  Burst  of  0.8  to  1.8  V  p-p,  0  V  dc, referenced  sine  wave  every  5  seconds. If  not,  go  to  chart  4. b.  Same  as  in  step  2  a.  If  not,  go  to  chart  4. c.  Same  as  in  step  2  a.  If  not,  go  to  chart  4. 6-12


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