Service Manuals, User Guides, Schematic Diagrams or docs for : MITSUBISHI Projector HC-3900 DIAGFLOW

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DIAGFLOW


>> Download DIAGFLOW documenatation <<

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 TROUBLESHOOTING
Power source 1

     No Power Source                                     Fan failure after
      after turning on                                     turning on




     Check AC socket     NG    Replace AC                  Check fan         NG   Reconnect fan
      and connector            socket                      connection



              OK                                                  OK




                         NG                                                  NG
       Check Fuse              Replace Fuse                 Check fan             Replace fan



              OK                                                  OK




     Check LED and       NG   Replace keypad                                 NG   Replace MAIN
                                                          Check MAIN
     remote control           and remote control          PCB ASSY                PCB ASSY



              OK




         Check           NG   Replace POWER
       5V standby
                              PCB ASSY
         output


              OK




      Check MAIN         NG    Replace
     PCB ASSY and
                               power cable
       power cable


              NG



     Replace
     MAIN
     PCB ASSY




                                                   -1-
Power source 2


       Fail to light up




                               Refer to LED
        Check LED         NG
                               indicator and follow
         indication            indicative actions


                OK




           Check          NG
                               Replace lamp
          lamp life



                OK




                          NG   Replace POWER
    Check POWER PCB
     ASSY 380V output          PCB ASSY



                OK




       Check lamp         NG   Replace lamp
        power unit             power unit



                OK




       Check MAIN         NG   Replace MAIN
       PCB ASSY                PCB ASSY



                OK




     Check color wheel    NG   Replace
       rotation while          color wheel unit
         power on




                                                      -2-
Video signal 1

       Computer                                        Video
       No Signal                                      No Signal




         Check        NG   Turn on                      Check        NG   Turn on
         source            source                       source            source



              OK                                             OK




         Check        NG                                Check        NG
         cable             Replace cable                cable             Replace cable



              OK                                             OK




                      NG   Replace MAIN                              NG   Replace
      Check MAIN                                        Check
       PCB ASSY            PCB ASSY                   optical unit        each optical parts



              OK




         Check        NG   Replace
       optical unit        each optical parts




                                                -3-
Video signal 2


      Image abnormal                                       Color abnormal




      Power on again                                      Check input cable    NG   Adjust
      and reset OSD                                       and signal setting        input signal



               OK                                                   OK




                          NG   Adjust                       Check color        NG   Adjust color
     Check input cable
     and signal setting        input signal                   wheel                 wheel



               OK                                                   OK




                          NG   Replace MAIN                                    NG   Replace MAIN
       Check MAIN                                           Check MAIN
       PCB ASSY                PCB ASSY                     PCB ASSY                PCB ASSY



               OK                                                   OK




                                                                               NG   Replace
                          NG                                   Check
          Check                Replace                       optical unit           each optical parts
        optical unit           each optical parts




                                                    -4-
Operation function


    Remote control failure




                             NG
     Check battery level          Replace battery



                OK




                             NG   Replace remote
    Check remote control
                                  control



                OK




                             NG   Replace remote
       Check remote
       control sensor             control sensor



                OK




        Check MAIN           NG   Replace MAIN
         PCB ASSY                 PCB ASSY




                                                    -5-



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