MX812 Testing and Replacing Operation (control) Panel.

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  • rbazan
    Technician

    50+ Posts
    • Dec 2013
    • 70
    #1

    [Electrical] MX812 Testing and Replacing Operation (control) Panel.

    I want to replace the Operation Panel on the Dell B5645nf with another unit that is working.
    I am using a Lexmark 812 manual and found a *disturbing/confusing note on the disassembly:

    Control panel removal (MX81x)
    : When replacing the control panel, control panel board, or controller board, replace
    only one component at a time. Replace the required component and perform a POR before replacing a second
    component. If this procedure is not followed, the printer will be rendered inoperable. Never replace both the control
    panel and the controller board without a POR after installing each one or the printer will be rendered inoperable.

    *Never install or remove these components as a method of troubleshootingThe machine
    must be powered up in Diagnostic mode     or the controller board, control panel boards, or control panel will become
    locked.

    Can I test Operation panel on another machine in safety mode?
    Tags: component, control, mode, panel, replace
    • ZOOTECH
      Senior member of CRS

      Site Contributor
      2,500+ Posts
      • Jul 2007
      • 3381
      #2
      Re: MX812 Testing and Replacing Operation (control) Panel.

      The main pwbs, and operation panel will be 'married' to the machine if powered up normally. To test pwbs, power up in 'diag' mode - press and hold the 3 and 6 (to be safe, I held the two buttons until the motors kicked in). If pwb does not fixed problem, it can be returned to stock.
      "You can't trust your eyes, if your mind is out of focus" --

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22705
          #3
          Re: MX812 Testing and Replacing Operation (control) Panel.

          Originally posted by ZOOTECH
          The main pwbs, and operation panel will be 'married' to the machine if powered up normally. To test pwbs, power up in 'diag' mode - press and hold the 3 and 6 (to be safe, I held the two buttons until the motors kicked in). If pwb does not fixed problem, it can be returned to stock.
          If the board you'd like to install has been used, it is already married to another machine and will not work in your Dell. The replacement boards are initialized ... ready to marry to another machine. A used board won't work, in service mode or not. =^..^=
          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

            • ZOOTECH
              Senior member of CRS

              Site Contributor
              2,500+ Posts
              • Jul 2007
              • 3381
              #4
              Re: MX812 Testing and Replacing Operation (control) Panel.

              Originally posted by blackcat4866
              If the board you'd like to install has been used, it is already married to another machine and will not work in your Dell. The replacement boards are initialized ... ready to marry to another machine. A used board won't work, in service mode or not. =^..^=
              I was referring to a new un-used pwb that had not been initialized by a normal power up sequence. Sorry, for the confusion.
              "You can't trust your eyes, if your mind is out of focus" --

                Comment

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22705
                  #5
                  Re: MX812 Testing and Replacing Operation (control) Panel.

                  Originally posted by ZOOTECH
                  I was referring to a new un-used pwb that had not been initialized by a normal power up sequence. Sorry, for the confusion.
                  Not a criticism ... a qualification. =^..^=
                  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

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