I have an HP 2605dn network printer. I keep getting a code 79 error message.

[SAUDI50]

My OS is Windows 7 Ultimate. Restarting doesn't help. I unplug the printer and restart it the error goes away but comes back on the next job.

[boisedan]

Did you ever resolve this issue.  I am having the same problem.  Only have 2600 pages through this printer.  This printer will not print from the control panel or the PC.  Was able to update the firmware but it didn't make a difference.  Tried the driver for Windows 7 - no difference.  I can't get any help from HP.  Get a 79 error and the printer reboots.  Have seen a 49 error, also.  Have been able to web-connect to this printer but it locks up.  I have tp unplug the printer and wait several minutes before attempting.  Has anyone got a clue?  I am frustrated.

[stix4]

Hello,

Thanks for the post.  With this one, we may have several options to look at.  Typically describes a internal firmware issue/failure.  There are some things to try listed in the document below.  (also applies to 49 error)  Good Luck!!

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=...

79 Error

Error message

79 Error

Turn off then on

Description

This is a critical error message and can indicate some kind of failure. Cycling the power might fix the problem. If a critical error persists, the printer might require service. The printer has experienced an internal firmware error.

Action

Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the printer to initialize.

If you have recently installed a memory DIMM in the printer, turn off the printer, remove the memory DIMM, reinstall the DIMM to verify that it is seated properly, and then turn on the printer.

If a surge protector is being used, remove it. Plug the printer directly into the wall socket. Use the power switch to turn the printer on.

If the error persists, contact HP Customer Care. See HP Customer Care or the support flyer that came in the printer box.

[boisedan]

Thank you for the reply.  This is word for word what I read on line.  Here is what I have done after trying what you just mentioned.  I have an identical printer on my desk at work.  I "borrowed" the (2) PC Boards from it and tried them, one at a time, in my printer.  Neither made a difference (my printer at work still works).  So, to me, that means the problem is elsewhere.  I am able to print 1 job at a time but it comes with much anquish.  Turning off and turning on multiple times.  I have tried with the USB connection and mostly ethernet.  It even locks up while looking at the control panel through my ethernet connection.  I really like HP LaserJets from my experience at work but I am getting soured with my first personal experience.  And, stupid me, just bought an M375nw to replace it (I would still like to repair my 2605!).  So, if you can offer some help from this, I would greatly appreciate it.  Thanks! 

[stix4]

Hello again,

Well, first off, I've heard nothing but good things about the 375nw, so I really hope that you're not disappointed.  Good job on the t-shooting efforts, the only thing that you did not mention is if it is plugged directly into an outlet, not through a power strip or surge suppressor.  As strange as it sounds, I have seen some peculiar behavior from printers in that type of configuration.  Short of that, I might also suggest posting your question/issue on the following links:

http://h30499.www3.hp.com/t5/Business-Support-Forums/ct-p/business-support

http://h30499.www3.hp.com/t5/Printers-LaserJet/bd-p/bsc-413

Meantime, I will continue to see what I can dig up on this end and let you know my findings.......

[R1200CL]

This worked for me and solved the error 79.

1. Know the IP, in case you want to ping the printer at step 5.

2. Power off

3. Open the rear cover.

4. Remove power on the right card (it's only one plug possible on top of card)

5. Power on

6. Load the latest firmware

7. Power off and connect the power on the card back again

8. Power on and test

It should now be fine. At least it was for me 🙂

It is probably even more simpler to just open the small hatch on the rear cover, and unplug the communication cable. You may try that first, before remove the whole back cover.

Good luck

[erickoester1]

Curious...

1.  How did you decide to open up the unit and disconnect the ribbon cable between the 2 boards?

2.  Can someone from HP please validate that procedure as a fix?

3.  If that is indeed is a valid fix, why does it correct the problem in the system?

[Gerard-swf]

R1200CL is right...partially.  I had the same errors and it has nothing to do with firmware or drivers.   Here is the 5 minute repair.  

1) Unplug power and network cords.  

2) Remove 1 screw from the little silver door about in the middle and open door.  You will see a ribbon cable.  I think this is for the communications card.  Gently, using a pair of flat plyers, pull the ribbon out.   Then gently put it back in.  I think due to dust, moisture...whatever, it losses connections.  Removing and reinstalling cleans it.

3) Close the door, put the screw back in, plug cords back in and turn on.  

Let it cycle and the communications problem should be gone.  Verify by printing a test page.  Thank you R1200CL for posting.  I hope this helps everyone else out too. 

[dn2605user1]

I tried the ribbon pull out and push back in solution to this problem and it worked flawlessly.  I'm very happy. Thanks for the solution - I've been looking on line for about an hour and nothing sounded very optomistic until I ran across this and tried it!

[AngelReneGAD]

Thank you for this solution. It's really work.