Pioneer VSX-922 UPC error

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  • bermo96
    Member
    • Jan 2019
    • 45
    • Belgique
    #1

    Pioneer VSX-922 UPC error

    Hello,
    I've a receiver Pioneer VSX-922 but unfortunately I can't use it anymore. The MCACC red led is blinking and I can't power up the device. When I try a reset with the Tune down button and the Multi-Zone button, I get the message UPC on the screen for 2 sec and then the receiver shutdown and get back to the MCACC led.

    Does someone know what the UPC message stand for ?

    Thank you
    Tags: None
    • bermo96
      Member
      • Jan 2019
      • 45
      • Belgique
      #2
      Re: Pioneer VSX-922 UPC error

      Does UPC mean microprocessor ?

        Comment

        • budwich
          Badcaps Legend
          • Jul 2015
          • 3097
          • Canada
          #3
          Re: Pioneer VSX-922 UPC error

          likely. Have you tried disconnecting everything from the unit? How did the unit get into this state / history of operation that caused the problem?
          Last edited by budwich; 05-20-2021, 10:44 AM.

            Comment

            • R_J
              Badcaps Legend
              • Jun 2012
              • 9594
              • Canada
              #4
              Re: Pioneer VSX-922 UPC error

              MCACC red led is blinking
              You likely have a bad output stage and the diagnostics is detecting DC on one of the outputs.
              Last edited by R_J; 05-20-2021, 12:14 PM.

                Comment

                • lotas
                  Badcaps Legend
                  • Jan 2016
                  • 4762
                  • Russia
                  #5
                  Re: Pioneer VSX-922 UPC error

                  Service manual:
                  Attached Files

                    Comment

                    • bermo96
                      Member
                      • Jan 2019
                      • 45
                      • Belgique
                      #6
                      Re: Pioneer VSX-922 UPC error

                      Originally posted by budwich
                      likely. Have you tried disconnecting everything from the unit? How did the unit get into this state / history of operation that caused the problem?
                      Everything is disconnected, I got it used and cheap as a working unit.

                        Comment

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