Toshiba C660 +CPU_CORE not found.

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  • nazrul145
    Badcaps Veteran
    • Jan 2014
    • 333
    • BD

    #1

    Toshiba C660 +CPU_CORE not found.

    Hello frnd, How are you all. I have a problem with toshiba c660. this laptop power on but cpu core voltage is missing.
    some important pin voltage given below.
    Pin 23 VIN= 18v
    Pin 22 VDD= 5V
    Pin 7 VR_On=3.3V
    Pin 31 VDDP= 5V
    So that i have change ISl95831 but same cpu core not found.
    Please suggest me what can i do, Please........
    Schematic Attached here
    Attached Files
  • ktmmotocross
    Boardkiller
    • Feb 2014
    • 3553
    • slovakia

    #2
    Re: Toshiba C660 +CPU_CORE not found.

    why do u change ic? no diagnostic in front of changing?
    wanna change all of conponents on board to find some bad?

    Comment

    • nazrul145
      Badcaps Veteran
      • Jan 2014
      • 333
      • BD

      #3
      Re: Toshiba C660 +CPU_CORE not found.

      Thank you for reply but I have check and not found any bad component, so that i change ic.

      Comment

      • nazrul145
        Badcaps Veteran
        • Jan 2014
        • 333
        • BD

        #4
        Re: Toshiba C660 +CPU_CORE not found.

        anyone please?

        Comment

        • ktmmotocross
          Boardkiller
          • Feb 2014
          • 3553
          • slovakia

          #5
          Re: Toshiba C660 +CPU_CORE not found.

          ugate1,2?
          lgate1,2?
          ugateg,lgateg?

          Comment

          • nazrul145
            Badcaps Veteran
            • Jan 2014
            • 333
            • BD

            #6
            Re: Toshiba C660 +CPU_CORE not found.

            There is no voltage found in this ugageg, lgateg, ugate1 ugate2 lgate1 lgate2

            Comment

            • smali
              Badcaps Veteran
              • Sep 2014
              • 287
              • Pakistan

              #7
              Re: Toshiba C660 +CPU_CORE not found.

              Check the VR_ON and r u checked 1.05vs_VCCP and VCCA that are normal?checked the pwrgood of these.

              Comment

              • nazrul145
                Badcaps Veteran
                • Jan 2014
                • 333
                • BD

                #8
                Re: Toshiba C660 +CPU_CORE not found.

                VR_ON is 3.3, But another voltage not available.
                I need power sequence for it.

                Comment

                • dj_ricoh
                  Badcaps Legend
                  • Jan 2013
                  • 2073
                  • uk

                  #9
                  Re: Toshiba C660 +CPU_CORE not found.

                  you have it !
                  diagram block on page 3 and
                  Voltage Rails on page 4 you can see the stage in every rail
                  S5 to S0 until every voltage its UP
                  Just cook it! It's already broken.

                  Comment

                  • faisalpaloyan
                    New Member
                    • Mar 2018
                    • 1
                    • bangladesh

                    #10
                    Re: Toshiba C660 +CPU_CORE not found.

                    Hello frnd, How are you all. I have a problem this board Toshiba c660 board. problem cpu core UGATE1 Mosfet will short. when i will press the power switch UGATE Mosfet will short ... alredy chenge also mosfet and ic . but same problem..please help me...

                    Comment

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