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Q7T3(AUO panel) LCD Monitor Service Guide 

Trouble Shooting 

 
 

 

1

 

 

 

 
 

 

                Q7T3 TROUBLE SHOOTING GUIDE 

 

  No Display or display is unstable: 

1.1 Interface 

Board: 

 

 

                                                              No picture or picture unstable 

 

                                                                                     

                                                                                  Power off                                Yes                        Turn on power 

                                                                                  No 

                   

               

 

 

 

 

    Does cable plugs in                      No                    Check all of wire then turn on power 

                                                                              connector?                                                                            switch again. 

                                                                                Yes     

 

          Does power stable?                          No                      Check Power BD 

                                                                              Yes 

 

                                                                  Is LED light green/orange?                          No                  Check control BD 

                                                                              Yes 

 

                                   Is LED status normal?             No          Check Flash Rom or replace it 

                  Yes                                                                                       

 

                                 Does crystal work correctly?         No           Check crystal CKT or replace it 

                          Yes 

 

                               Is interface BD normally?           No               Replace interface BD        

                                                                              Yes 

 

             Replace panel 

 

 

 

 

 

 

 

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