HP CLJ 9500 MFP - Won't start - stuck on "HP invent screen"

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  • rmacmaho
    • May 2025

    #1

    HP CLJ 9500 MFP - Won't start - stuck on "HP invent screen"

    I have a Hp 9500 MFP that won't start / boot.

    It does the 512 mb memory test ok but then the HP invent screen keeps scrolling around.

    Ready, Data and Attention LED's flash around in sequence. Red light on sorter is flashing.

    I have tried disconnecting sorter, removed network card etc but no change when I restart.

    When I talk direct to printer - I can get to network card but it shows device is not present?

    Any suggestions?

    I am not a tech but if I needed to get in their with screw drive I will give it a go.
  • prntrfxr
    Service Manager

    1,000+ Posts
    • Apr 2008
    • 1627

    #2
    HP CLJ 9500 MFP - Won't start - stuck on "HP invent screen"

    My first guess would have been network card, but you ruled that out. Does the printer have a Hard Drive? If it does, power the machine down, remove it, and power it back up. If it comes up the hard drive will need to be reinitialized or it may be defective and need replacing. If it isn't that, the only 2 things you're left with are the formatter and firmware. Call a tech when you get to this point. The wrong firmware can make a huge problem and some configuration needs to be done when you replace formatters.

    On a side point, these machines are real sensitive to power fluctuations. They require more power than a smaller machine. Make sure you plug it directly into the outlet not a surge protector. Try plugging it into a different outlet on a different circuit breaker.
    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

    • rmacmaho

      #3
      Unfortunately still have the problem. Disconnected network card and hard drive but problem is still there. Tried a Cold reset - it seemed to do it but still can't get past hp invent screen?

      Comment

      • D_L_P
        Self Employed

        1,000+ Posts
        • Oct 2009
        • 1196

        #4
        I had similar problem on a different model, never booted no error codes. Turned out to be the firmware card needed replaced.

        Can you pull out the system board and reseat all the memory and firmward card? I think its on the lower left and only 2 screws and the whole thing pulls out.

        Comment

        • rmacmaho

          #5
          Thanks - I actually removed the 8 screws and removed the board. Pulled out the cf card and put back and also the memory module and reseated. Still not luck. Is it possible to re reflash the cf card outside of the machine (ie on my pc etc). Is this a standard CF card i can replace or do I need to buy a HP one?

          Comment

          • rmacmaho

            #6
            Called tech and now Gone backwards even further!

            Just paid for tech to come out - lovely guy and yes he did seem to know what he was doing - tried all that I had in the past. He also tried swapping flash card out of my 9050 (black and white printer) as it had identical product number - 9500mfp did not display anything this this flash card. When he put original back in the machine now comes up with eeprom not found error. He also had a NVRam error I believe when he was here.

            he thinks it is formatter board but who can know for sure.

            So in short $80 to go backwards.

            Formatter boards seem to be about $1000 of around $650 for repaired exchange version. No guarantee this will fix it either really. so I think the only option is use it as parts (supplies mainly) for a 9500HDN I have or sell on eBay as not working.

            Comment

            • D_L_P
              Self Employed

              1,000+ Posts
              • Oct 2009
              • 1196

              #7
              WOW!! I think I'd try a new firmware for under $200 before going straight for the $1000 formatter.
              Here is one for $97. This one is only $76.

              I'd hate to see you waste more money, but I've seen firmware fix things more than a formatter board.

              There is a new version of firmware for the CLJ 9500mfpjust released 08.160.8 (19 Feb 2010). One of the things the new firmware fixes is locking up (unresponsive) when scanning. Did it happen like this..you were scanning and it locked up? and now it won't boot?
              Try calling HP support or an online chat. I've been told by some of my customers HP has sent them free, new firmware. It just depends on who you get and what model/problem the firmware is for, but if there is a "recall" for it in their database they will definitely send it to you free.

              Good luck!

              Comment

              • J_Lee
                Trusted Tech

                100+ Posts
                • Oct 2008
                • 111

                #8
                I have actually had the same exact problem on a 9050 mfp and it was the formatter.

                Comment

                • ucinn
                  Trusted Tech

                  250+ Posts
                  • Jun 2009
                  • 383

                  #9
                  Any rersults yet.. I have the same thing on an M9050 with the addition of a dark screen. it goes through the bootup until it gets to 6/6 and stops after the B gets highlighted on the screen. it stops there and won't go any further. I tried disconnecting the sorter and ADF.... tried plugging directly into the wall...still nothing. Replaced the formatter and still nothing. How do I do a firmware upgrade on this thing.. help!!!!

                  Comment

                  • J_Lee
                    Trusted Tech

                    100+ Posts
                    • Oct 2008
                    • 111

                    #10
                    Try a new dimm or firmware chip on the formatter

                    Comment

                    • prntrfxr
                      Service Manager

                      1,000+ Posts
                      • Apr 2008
                      • 1627

                      #11
                      It is possible for the problem to be caused by network card, firmware, or formatter. Rule of thumb is remove all IO devices (network card and/or hard drive) then see if the problem goes away. After that you can upgrade the firmware or replace the firmware DIMM (sometimes the DIMM is bad and therefore upgrading may not work). If may also be formatter or both the firmware and the formatter. Be careful when speaking to your vendor when ordering. Make sure that you tell them if you have an mfp machine (stress that they verify it) or they could send you the wrong DIMM. Example: Q7725-68000 is the part number for firmware for the 9040/9050 base machine, but Q7725-67997 is the part number for the firmware for the 9040/9050mfp machine. They are NOT interchangeable. It's the same with the formatter.
                      Last edited by prntrfxr; 06-09-2010, 07:26 PM. Reason: grammatical
                      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

                      • ucinn
                        Trusted Tech

                        250+ Posts
                        • Jun 2009
                        • 383

                        #12
                        Thanks for all the help, I will try the firmware update next. How does one upgrade the firmware. I don't have a service manual on this thing and haven't been able to find one online anywhere. Thanks in advance for your help.

                        Comment

                        • prntrfxr
                          Service Manager

                          1,000+ Posts
                          • Apr 2008
                          • 1627

                          #13
                          HP then click on support & drivers . Click the little circle that says Download Drivers and Software next to it. In the box that says for product enter CM9500 (if you enter color laserjet 9500mfp it wont show anything but cartridges. I guess you could spell out multifunction printer, but I found it easier to enter what I did as CM stands for color multifunction.) Then choose the correct printer from the list that is displayed. Next select the operating system. Select Firmware in the next screen and it will take you to the bottom of the page. It will say the following:

                          "HP Color LaserJet 9500mfp Firmware for Single/Multiple Printers - Windows Operating Systems (Must Read README Before Installing)"

                          Click on these words FIRST. It will bring you to another screen with instructions and click the README tab. Click the back button back to the screen that displayed the description above and click download. Once it's downloaded, READ the README file thoroughly first and follow the instructions EXACTLY.
                          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

                          • ucinn
                            Trusted Tech

                            250+ Posts
                            • Jun 2009
                            • 383

                            #14
                            Originally posted by prntrfxr
                            HP then click on support & drivers . Click the little circle that says Download Drivers and Software next to it. In the box that says for product enter CM9500 (if you enter color laserjet 9500mfp it wont show anything but cartridges. I guess you could spell out multifunction printer, but I found it easier to enter what I did as CM stands for color multifunction.) Then choose the correct printer from the list that is displayed. Next select the operating system. Select Firmware in the next screen and it will take you to the bottom of the page. It will say the following:

                            "HP Color LaserJet 9500mfp Firmware for Single/Multiple Printers - Windows Operating Systems (Must Read README Before Installing)"

                            Click on these words FIRST. It will bring you to another screen with instructions and click the README tab. Click the back button back to the screen that displayed the description above and click download. Once it's downloaded, READ the README file thoroughly first and follow the instructions EXACTLY.
                            Thank you very much sir..I greatly appreciate it.

                            Comment

                            • ucinn
                              Trusted Tech

                              250+ Posts
                              • Jun 2009
                              • 383

                              #15
                              One more question, how do I disconnect tray 4 from the main machine. I've looked all over google, the users guide and the service manual and can't find any installation instructions for it. Thanks again

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