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DA0ZQFMB6F0 REV F no power

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    DA0ZQFMB6F0 REV F no power

    Hope someone can help me unit has no power but it has 3v and 5v connection but missing 3v ec.

    VCCRTC - 3V
    RTC_RST#2.9V
    RTC_TEST# 2.9V
    +3VPCU - 3.3V PMW SIGNALS OK
    +5VPCU - 5V PMW OK

    SYS_HWPG - 0V
    NBSWON# - 3.3V
    S5_ON - 0V
    +5V_S5 - 0V
    +3V_S5 - 0V
    VNN_ON - 0V
    EC_PWROK - 0V
    +3V_C - 0V


    Attched schem and boardview
    Attached Files

    #2
    Re: DA0ZQFMB6F0 REV F no power

    Pu6 - 1,2,6,7 - 3.3v
    3- 0v
    4- 5.1v
    5- 0v
    8,9 - 0v
    10- 0v
    12- 0v
    13,14 - 0v

    Comment


      #3
      Re: DA0ZQFMB6F0 REV F no power

      Hi
      Check PU7 mesuremants

      Comment


        #4
        Re: DA0ZQFMB6F0 REV F no power

        Originally posted by mielta View Post
        hi
        check pu7 mesuremants
        pin
        1- 6.72v
        2,3,4,5 -19v
        6,19,20 -3.3v
        7,8,1 - gnd
        9- 3.0v
        10,16,15,- nc
        11- 4.5v
        12-3.3v
        13 - 0.6v
        14- 3.3v
        17 - 3.3v

        Comment


          #5
          Re: DA0ZQFMB6F0 REV F no power

          Check PR30 at Page 22
          and search the PDF at 680_LDO and than check the way to +3V_LDO_EC

          Comment


            #6
            Re: DA0ZQFMB6F0 REV F no power

            Originally posted by mielta View Post
            Check PR30 at Page 22
            and search the PDF at 680_LDO and than check the way to +3V_LDO_EC
            680_LDO -3.3v
            d17 - 3.3v +3V_LDO_EC

            Comment


              #7
              Re: DA0ZQFMB6F0 REV F no power

              Originally posted by mielta View Post
              Check PR30 at Page 22
              and search the PDF at 680_LDO and than check the way to +3V_LDO_EC
              pr30 no stuff
              c417 pin 1

              Comment


                #8
                Re: DA0ZQFMB6F0 REV F no power

                check pin 26/50 from EC chip (IT8987E)

                Comment


                  #9
                  Re: DA0ZQFMB6F0 REV F no power

                  Originally posted by mielta View Post
                  check pin 26/50 from EC chip (IT8987E)
                  pin 26 is 3.3v

                  Comment


                    #10
                    Re: DA0ZQFMB6F0 REV F no power

                    than you have EC power in first post you wrote you miss EC power
                    check Pin 107 and 112 from EC chip

                    Comment


                      #11
                      Re: DA0ZQFMB6F0 REV F no power

                      Originally posted by mielta View Post
                      than you have EC power in first post you wrote you miss EC power
                      check Pin 107 and 112 from EC chip
                      107-3.3v
                      pin 112- 0v

                      thank you also sir

                      Comment


                        #12
                        Re: DA0ZQFMB6F0 REV F no power

                        pin 112 must be 3,3v when you press Powerbutton

                        Comment


                          #13
                          Re: DA0ZQFMB6F0 REV F no power

                          Originally posted by mielta View Post
                          pin 112 must be 3,3v when you press Powerbutton
                          3.3v and goes to zero. Taking only 33mAmp on supply then goes 0

                          Comment


                            #14
                            Re: DA0ZQFMB6F0 REV F no power

                            you can try flashing EC Chip you find it in Biossection

                            Comment


                              #15
                              Re: DA0ZQFMB6F0 REV F no power

                              Originally posted by mielta View Post
                              you can try flashing EC Chip you find it in Biossection
                              Ok I would Try it sir

                              Comment


                                #16
                                Re: DA0ZQFMB6F0 REV F no power

                                Originally posted by mielta View Post
                                you can try flashing EC Chip you find it in Biossection
                                EC_PWROK- 0v same after flashing bin and ec

                                Comment


                                  #17
                                  Re: DA0ZQFMB6F0 REV F no power

                                  Pin 119 on EC Chip susb# when you switch Powerbutton on

                                  Comment


                                    #18
                                    Re: DA0ZQFMB6F0 REV F no power

                                    Originally posted by mielta View Post
                                    Pin 119 on EC Chip susb# when you switch Powerbutton on
                                    Nothings happens sir 0v

                                    Comment


                                      #19
                                      Re: DA0ZQFMB6F0 REV F no power

                                      unit now doesnt takes any amps if power is pressed

                                      Comment


                                        #20
                                        Re: DA0ZQFMB6F0 REV F no power

                                        maybe a bad sio chip?

                                        Comment

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