Dell 5350dn (a.k.a Lexmark T65x Series)

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  • Lance15
    Service Manager

    Site Contributor
    1,000+ Posts
    • Jun 2015
    • 1069
    #1

    Dell 5350dn (a.k.a Lexmark T65x Series)

    Okay. Been pounding my head against the wall for over 2 weeks on this one. Initial complaint was it dropped off the network. Was told they had a "power event" (power outage). I figured a PWB had been fried. Tried the mainboard, then the Op Panel. Tried to enter Diag mode each time before a full POR to test. No change.

    Here's what happens:

    Switch power switch on
    No op panel of ANY kind
    Main fan spins up

    NOTHING else.

    Looked at the service manual on the power up sequence:
    Dell splash screen appears
    Fuser fan turns on (doesn't make much sense.....there's no "fuser cooling fan").
    Fuser lamp turns on
    System card fan (main fan) turns on
    Op panel comes alive
    Motors start spinning up

    I've ordered the LVPS and am hoping..................

    Anyone have suggestions?
    Tags: fan, fuser, panel, power, turns
    • Lance15
      Service Manager

      Site Contributor
      1,000+ Posts
      • Jun 2015
      • 1069
      #2
      Re: Dell 5350dn (a.k.a Lexmark T65x Series)

      Forgot to mention the optional HDD is installed. I think I can hear it spinning up. If I disconnect it, I get a red flashing light on the op panel.

        Comment

        • rapidocument
          Multibrands Tech

          250+ Posts
          • Jul 2012
          • 381
          #3
          Re: Dell 5350dn (a.k.a Lexmark T65x Series)

          Have you checked this ?

          Lexmark T654 blank display
          My INSTAGRAM https://www.instagram.com/reparacion_impresoras_oaxaca

            Comment

            • Lance15
              Service Manager

              Site Contributor
              1,000+ Posts
              • Jun 2015
              • 1069
              #4
              Re: Dell 5350dn (a.k.a Lexmark T65x Series)

              Hmmmmmm. Thank you for that post. Mine doesn't have an additional tray, but, I think I'm going to have to do what that poster did. Pull plugs on the mainboard until I get something.

                Comment

                • Lance15
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Jun 2015
                  • 1069
                  #5
                  Re: Dell 5350dn (a.k.a Lexmark T65x Series)

                  Well, I had a little time on Friday to troubleshoot some. I started in the lower left hand corner of the mainboard and once I unplugged the connector labeled "MIRROR" (top center), I got my panel back. I thought I was good, so I plugged all the other connectors back in. No panel. I unplugged the "CFAN" (Cartridge Fan, I guess -- still had the MIRROR connector disconnected). Got my panel back. Turned the printer off and plugged the MIRROR connector back in. No panel. WTF!? I went back and forth plugging and unplugging the CFAN and the main fan connectors. Still have no definitive answer. Had to leave for a meeting. Will probably restart troubleshooting tomorrow if I have time.

                    Comment

                    • Lance15
                      Service Manager

                      Site Contributor
                      1,000+ Posts
                      • Jun 2015
                      • 1069
                      #6
                      Re: Dell 5350dn (a.k.a Lexmark T65x Series)

                      Turned out to be the LVPS.

                      What threw me was the main fan would spin up. However, it would spin up at full speed. I didn't catch onto that. I was thinking it was more of a blown cap issue as I've seen with PC mainboards in the past.

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