4250/4350 dc controller/formatter relationship

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  • GAtech
    Technician
    • Jan 2015
    • 20
    #1

    4250/4350 dc controller/formatter relationship

    If you have a used controller from a 4350n and a used formatter from a 4250n. What will the machine wind up as?

    I say 4350n and we have used 4350n controllers to upgrade 4250n printers with success.

    But alot of people are selling used controllers and formatters as universal. I think the formatter is universal. Not the dc controller.

    Thoughts?

    Sent from my SM-G900P using Tapatalk
    Tags: None
    • subaro
      Service Manager

      1,000+ Posts
      • Oct 2010
      • 1273
      #2
      Re: 4250/4350 dc controller/formatter relationship

      Originally posted by GAtech
      If you have a used controller from a 4350n and a used formatter from a 4250n. What will the machine wind up as?

      I say 4350n and we have used 4350n controllers to upgrade 4250n printers with success.

      But alot of people are selling used controllers and formatters as universal. I think the formatter is universal. Not the dc controller.

      Thoughts?

      Sent from my SM-G900P using Tapatalk
      The reverse is true. the dc controller is common and the formatter is different. Easily verifiable by looking at the parts manual. hopes this help
      THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

        Comment

        • GAtech
          Technician
          • Jan 2015
          • 20
          #3
          Re: 4250/4350 dc controller/formatter relationship

          Originally posted by subaro
          The reverse is true. the dc controller is common and the formatter is different. Easily verifiable by looking at the parts manual. hopes this help
          In the service manual the dc controller and formatter are both universal across the 4250 and 4350. There are different formatters for network and base.

          new boards are blank/neutral. So when installing 2 used boards with different models which one wins?

          Sent from my SM-G900P using Tapatalk

            Comment

            • GAtech
              Technician
              • Jan 2015
              • 20
              #4
              Re: 4250/4350 dc controller/formatter relationship

              Originally posted by GAtech
              In the service manual the dc controller and formatter are both universal across the 4250 and 4350. There are different formatters for network and base.

              new boards are blank/neutral. So when installing 2 used boards with different models which one wins?

              Sent from my SM-G900P using Tapatalk
              So i found this article and it confirms my thoughts
              HP LaserJet 4240n, 4250 & 4350, DC Controller - Model change & speed upgrade, RM1-1108-180, The Printer Works

              does anyone know how to make a dc controller blank?

              Sent from my SM-G900P using Tapatalk

                Comment

                • subaro
                  Service Manager

                  1,000+ Posts
                  • Oct 2010
                  • 1273
                  #5
                  Re: 4250/4350 dc controller/formatter relationship

                  Originally posted by GAtech
                  In the service manual the dc controller and formatter are both universal across the 4250 and 4350. There are different formatters for network and base.

                  new boards are blank/neutral. So when installing 2 used boards with different models which one wins?

                  Sent from my SM-G900P using Tapatalk
                  Acutally from the normal tech using the service and parts manual to order parts, the part numbers for the the two models are diffrent for the formatter and the same for the dc controller.

                  Formatter, LJ 4250/4350 (base models) Q3653A Q3653-67901/Q3653-69001
                  Formatter, LJ 4250/4350 (network models) Q3652A Q3652-67901/Q3652-69001

                  Dc controller (LJ 4250/4350) RM1-1108-000CN.

                  What printer works has described is what they have found to be a manipulation of the boards that hp has allowed and which makes a mess of things for the simple tech who just wants to follow procedures for the repair of a machine. As you can see from the above, if i order a 4250 formatter from hp ,they would not send me a blank board. If you buy used then as the article described, you can be screwed as NVRAM will be at play. [ doing nvram may make the board blank , try at your risk ]

                  Initializing the NVRAM resets the serial number, the event log, the page counts,
                  the EIO card, and the embedded print server. Initializing the NVRAM also resets service-menu
                  values to factory defaults.
                  THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

                    Comment

                    • GAtech
                      Technician
                      • Jan 2015
                      • 20
                      #6
                      Re: 4250/4350 dc controller/formatter relationship

                      (notshown)Formatter assembly (LJ 4250/4350 printer, base model)Q3653-679011(notshown)Formatter assembly (LJ 4250/4350 printer, network models)Q3652-679011

                      This is from page 483 of the manual. One part number for the network version. I think you got your info from page 453 and those part #s are for outright or exchange.

                      And my situation revolves around used boards, so printer works article is completely relevant.





                      Sent from my SM-G900P using Tapatalk

                        Comment

                        • subaro
                          Service Manager

                          1,000+ Posts
                          • Oct 2010
                          • 1273
                          #7
                          Re: 4250/4350 dc controller/formatter relationship

                          [QUOTE=GAtech;510066](notshown)Formatter assembly (LJ 4250/4350 printer, base model)Q3653-679011(notshown)Formatter assembly (LJ 4250/4350 printer, network models)Q3652-679011

                          This is from page 483 of the manual. One part number for the network version. I think you got your info from page 453 and those part #s are for outright or exchange.

                          And my situation revolves around used boards, so printer works article is completely relevant.

                          Yes, you are absolutely correct. usuall i would look at the diagram and then get the part number, but i started from the top and saw the one i posted. So in that case i see question that makes sense now. thanks for the correction.
                          someone may have invested the time to make a service tool to access the registry of the controller that stores that information as they may see it valuable to make a profit in clearing the boards and selling as blank.
                          Last edited by subaro; 03-20-2016, 01:36 PM.
                          THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

                            Comment

                            • subaro
                              Service Manager

                              1,000+ Posts
                              • Oct 2010
                              • 1273
                              #8
                              Re: 4250/4350 dc controller/formatter relationship

                              [QUOTE=GAtech;510066](notshown)Formatter assembly (LJ 4250/4350 printer, base model)Q3653-679011(notshown)Formatter assembly (LJ 4250/4350 printer, network models)Q3652-679011

                              This is from page 483 of the manual. One part number for the network version. I think you got your info from page 453 and those part #s are for outright or exchange.

                              And my situation revolves around used boards, so printer works article is completely relevant.


                              So is the speed difference quite noticeable. 4250 is 45ppm and 4350 is 55 ppm. long time since i have seen a 4350. for me i don't think is that a big deal. i have a 4250 and when it gets going it is fast enough.
                              Last edited by subaro; 03-20-2016, 01:37 PM.
                              THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

                                Comment

                                • blackcat4866
                                  Master Of The Obvious

                                  Site Contributor
                                  10,000+ Posts
                                  • Jul 2007
                                  • 22929
                                  #9
                                  Re: 4250/4350 dc controller/formatter relationship

                                  It sounds to me like you found your answer:

                                  "For the purposes of recovering inadvertently lost model settings, boards can also be sent to our repair depot in Hayward, CA, and for a fee we will reprogram the settings to become the model needed."

                                  =^..^=
                                  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

                                    • GAtech
                                      Technician
                                      • Jan 2015
                                      • 20
                                      #10
                                      Re: 4250/4350 dc controller/formatter relationship

                                      I was looking to see if anyone knew how to do it without sen ding the boards out.

                                      Sent from my SM-G900P using Tapatalk

                                        Comment

                                        • blackcat4866
                                          Master Of The Obvious

                                          Site Contributor
                                          10,000+ Posts
                                          • Jul 2007
                                          • 22929
                                          #11
                                          Re: 4250/4350 dc controller/formatter relationship

                                          From what I read, you'll have a very nice doorstop. =^..^=
                                          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

                                            • subaro
                                              Service Manager

                                              1,000+ Posts
                                              • Oct 2010
                                              • 1273
                                              #12
                                              Re: 4250/4350 dc controller/formatter relationship

                                              when the manufacturer do things like this, it allows for chaos when machine change hands ect. as who does who knows what and thus the creation of a whole bunch of wasteful time and calls and proddings ah. over to you blackcat. but as human, he has a valid point to seek to take advantage of that open door.
                                              THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

                                                Comment

                                                • subaro
                                                  Service Manager

                                                  1,000+ Posts
                                                  • Oct 2010
                                                  • 1273
                                                  #13
                                                  Re: 4250/4350 dc controller/formatter relationship

                                                  This reminds me of lexmark. They have a situation where you have to install a new board from the factory if you want to use it permanently. You cannot use used boards or any functional items that contain nvram from one machine to another. nvram mismatch error would be posted on boot screen.
                                                  I see that as a lot of e-waste as good boards just get thrown in the garbage when they could have been used in another machine. I dislike lexmark very much on that issue. They are decent machines overall, but why this prevention of using used boards ?. kyocera on the other hand is tolerant, just swap the eeproms.
                                                  As i see it, we can only inhabit this earthly planet at the moment and we have to put aside petty and stupid business practices if we want the future generations to enjoy what we have been privileged to thus far.
                                                  THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

                                                    Comment

                                                    • Printerdude
                                                      Trusted Tech

                                                      100+ Posts
                                                      • May 2015
                                                      • 119
                                                      #14
                                                      Re: 4250/4350 dc controller/formatter relationship

                                                      Originally posted by GAtech
                                                      I was looking to see if anyone knew how to do it without sen ding the boards out.

                                                      Sent from my SM-G900P using Tapatalk
                                                      Sorry, you won't find/get it at any price. Just send it in or buy a new board from HP.
                                                      Last edited by Printerdude; 03-22-2016, 11:25 PM.

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