Dead AR-M 550

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  • vincent64
    Trusted Tech

    250+ Posts
    • Feb 2008
    • 382
    #1

    Dead AR-M 550

    Have this AR-M 550 that when I power it on, first inside switch, you can hear some relays on the PWB click on, then the side switch, a couple of fans run, and thats pretty much it.
    Had this happen last week, after checking AC and DC pwb's, I reseated the main and boot roms, and the machine powered up, ran rest of that afternoon and next day and all weekend, Mon. it went dead again.
    Tried swapping out MFP board, HDD unit, swapping EPROMS also, did no good at all, fans run, some relays cycle, but no power up.
    Thinking of the power supplys next, any ideas???
    Tags: 550, arm, dead, life, mfp board, power supply, symptoms
    • Dark Helmet
      Senior Tech

      Site Contributor
      500+ Posts
      • May 2009
      • 835
      #2
      I had a brand new MXM550 which is basically the same machine do the same thing. You could flip the power switches and some fans would come on and hear a few clicks and that was it. We ended up changing the DC power supply.
      Evil will always triumph because good is dumb.

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22997
          #3
          Load 7 3/4 x 10 1/2 Paper

          I had one like this. The original symptoms were "Load 7 3/4 x 10 1/2 Paper." By the time I arrived it was dead. Fortunately for me I had a donor machine available. I replaced the power supply, then the EEPROMs, then the MFP (and it woke up). Then restored the original PS and EEPROMs (still awake and kickin').

          The thing that surprised me was that there were no outputs from the power supply, even when the outputs were unplugged, yet the board was good.
          Last edited by blackcat4866; 07-01-2009, 01:22 AM. Reason: remembered more details!
          If you'd like a serious answer to your request:
          1) demonstrate that you've read the manual
          2) demonstrate that you made some attempt to fix it.
          3) if you're going to ask about jams include the jam code.
          4) if you're going to ask about an error code include the error code.
          5) You are the person onsite. Only you can make observations.

          blackcat: Master Of The Obvious =^..^=

            Comment

            • jprecht
              Trusted Tech

              100+ Posts
              • Dec 2008
              • 104
              #4
              dead 550

              have had a # of these come through the wholesaler like this. have replaced the comm. bd and had them come back 2 life. tried the boot rom chip but that only helped a couple x. admit i have the luxury of bd swap.
              good luck jp
              IT IS BETTER TO REMAIN QUIET AND BE THOUGHT A FOOL
              THAN TO SPEAK AND REMOVE ALL DOUBT

                Comment

                • vincent64
                  Trusted Tech

                  250+ Posts
                  • Feb 2008
                  • 382
                  #5
                  FIgured it out after lunch, ended up being the DC pwb, swapped it out, machine came up and is working.
                  Thanks for the help

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