HP LJC 4700N

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  • delacelle
    Junior Member
    • Nov 2008
    • 7
    #1

    HP LJC 4700N

    hello everyone,

    I have code error on my printer :
    41.2
    51.2
    51.21

    appear and desapear.

    Any solution, advice about wich part do i have to replace.

    Thanks to all
    See the sky !
    Tags: 4700n, 700n, avec, duplex unit, ect, power supply
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22997
      #2
      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

        • prntrfxr
          Service Manager

          1,000+ Posts
          • Apr 2008
          • 1627
          #3
          HP LJC 4700N

          I've had to do it once in a 4700 before. I've done lots of 4600's and 4650's. It's very similar, but you have to take off more parts. You have to remove the following:

          Paper tray (Tray 2). ● Duplex cover or duplex unit. ● Face down tray assembly. ●Top cover. ● Left cover. ● Right cover. ● Rear cover. ● Delivery fan (Fan 3). ● Cartridge fan (Fan 2). ● Power supply fan (Fan 4). ● Formatter.

          Make sure to take the printer off of all trays and place the printer on a level, sturdy surface before continuing.

          ● Low-voltage power supply PCB. ● DC controller PCB.

          1 very critical thing is to remove the support bracket, located middle left side of the top of the printer, and put it under the frame BEFORE you remove the cover over the scanners or you'll mess up the optics. There is a triangle symbol on the frame to show you where that goes. When you're done make sure you put it back. Run multiple calibrations afterward and test.

          Give yourself a couple of hours for the first time you do it.


          Last edited by prntrfxr; 11-06-2008, 09:47 PM. Reason: formatting
          Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways - Coke in one hand - chocolate in the other - body thoroughly used up, totally worn out and screaming "WOO-HOO, what a ride!".

            Comment

            • delacelle
              Junior Member
              • Nov 2008
              • 7
              #4
              Thank you both,

              I understand, It's not an easy repare. Thank you to gave me the direction. all the steps to remove the laser/scanner assembly are well describe on the diagnostic manual. I order the rm1-1591-030cn parts. I will give you a feet back when i did it.

              Thank you for your answers, i realy appreciate.

              Have a good week-end
              See the sky !

                Comment

                • prntrfxr
                  Service Manager

                  1,000+ Posts
                  • Apr 2008
                  • 1627
                  #5
                  HP LJC 4700N

                  De Rien. Avec plaisir...hope it goes well for you.
                  Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways - Coke in one hand - chocolate in the other - body thoroughly used up, totally worn out and screaming "WOO-HOO, what a ride!".

                    Comment

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