asked Oct 1, 2003 at 2:28pm
Hp HP DesignJet 4000

HP 4000/4050 41.5 Printer Error w/blanks - fix

Just posting this in the hope of making it easier for someone else down the line - we have an HP LaserJet 4050 that suddenly started throwing a 41.5 Printer Error and printing blanks. The fix turned out to be very easy but if I hadn't figured it out it may have resulted in an expensive service call.

My separation roller - the blue & grey roller in the paper tray - had moved out of place. I just pushed it back in place and it was fixed.

Here's a page that has pictures of the separation and feed rollers on a 4000 series printer. The separation roller is part of the paper tray and is shown in the lower picture:


Hope this helps someone.
Yeeeees but........
Glad it worked for you. However, in the "real world" I wish it was all so easy. Oh I wish.
All the same, well done.
Trev, 50 today.
by Trev Pearson on Oct 1, 2003 at 4:20pm Add comment
Hmmm....If you'd searched our archives for 41.5, you would have seen that covered more than once.

Happy Birthday, Trev.
Remember, you're not getting older, you're getting better. Thanks for the help on the board.
by moe on Oct 1, 2003 at 6:23pm Add comment
Perhaps, but the database containing the contents of this forum would probably be exponentially larger.

It's cool that he posted this, don't get me wrong. But a lot of new people don't seem to use the Search function at all. Which turns into a lot of repeating previous answers. (Do a search on the drum heater Xerox fault code, and you might see what I mean)
by wlulham on Nov 2, 2005 at 12:48pm Add comment
Before I looked it up, I said to myself "he's from NY".
Fact is, people don't want to bother reading. They don't read the forum rules, which do appear in front of them before posting. They don't read the thread and post right below the response to their question.
Since anonymous is a newbie with only the 2 posts in this thread to his credit, he probably doesn't realize I'm the forum moderator and the site is called fixyourownprinter. That implies that you do your own research before you post a problem for the 53rd time. It's actually a lot faster and easier to put HP 4000 41.5 into the search engine as suggested in the forum posting rules, which do pop up before you post.
by moe on Nov 2, 2005 at 6:07pm Add comment
I have a Hp 4000 printer. I replaced the fuser and it prints when the back door is left open. When I close the door to check if it comes through at the top, it stops right before it gets to the paper delivery assembly. I changed the paper delivery assembly and also the fuser. It still does the same thing, What else could it be?
by Anonymous on Nov 23, 2007 at 6:52pm Add comment
Could be a problem with the back door or the top cover. To test remove the top cover and defeat the cover open switch and hold the back door closed and print a test sheet. Does it still jam or come out the top. If it comes out the top, then your issue is the top cover or still the paper delivery assemby maybe not installed correctly.
by dmzcompute on Nov 23, 2007 at 7:50pm Add comment
Actually, it turns out that the pickup/separator rollers were not seated properly from a previous service call. Once the rollers were seated all got back to normal. Thanks for your input though. - unknown
Time for the customer to get a new service company. If the rollers were not installed correctly and then the facedown assembly is replaced to try and correct the problem without testing the paper path completely (like tray 1 doing the same thing), diagnostics by the service provider leaves alot to be desired.
by dmzcompute on Nov 24, 2007 at 7:08pm Add comment
All I had to do was Google the title to find the solution. Apparently a common problem. Didn't have to hire this one out - sorry!
by unknown on Nov 24, 2007 at 8:00pm Add comment
I think the issue is you changed your title to HP 4000 paper delivery assembly rather than keeping the same 41.5 error which I now assume was the error you were getting. If it was just reading the previous posts would have solved your issue and what you posted it is a common issue. In fact a couple of years ago I posted a response for a simliar problem which I assume was your issue and if you had done a search you would have found the solution in no time.


In fact the first post of this thread was your solution.
by dmzcompute on Nov 24, 2007 at 8:46pm Add comment
Really this documentation is so helpfull , Thanks A lot Team

I feel very well after this activity.
by unknown on Dec 11, 2007 at 1:21am Add comment
Thank you so much for this post - it totally was the problem and saved me TONS of time!!!
by Anonymous on May 5, 2008 at 9:15am Add comment
Just give the guy the answer and stop telling everyone to search.

Maybe you ( the complainers ) should do a search on how not to be an annoying Richard Head!

by unknown on May 5, 2008 at 10:40am Add comment
I have a tough 41.5 that I have been unable to resolve.

I have tried the following:

new sep clutch
refurbish sep clutch
new sep pad
swapped out T2 unit with known working
replaced pick assembly
refurbished MP clutch assy
cleaned pick solinoid on both the original T2 unit as well as the replacement.
reconditioned pick D rolls on both T2 assemblies

At this point I am unsure what else to do - MP tray works fine.

When printing from T2 I get a blank page half out of the top output assy before the unit stops with a 41.5/13.2 error.

I dont feel that the laserscanner/ECU is going to resolve this issue as the MP tray works fine.

I have viewed each thread on the 41.5 in the forums to no avail. Any further assistance would be appreciated. Thanks

by rhipwell on May 14, 2008 at 8:17am Add comment
I had a similar problem a while back. It was difficult to figure out and it turned out to be the paper feed assembly located in the front of the printer. P/N= RG5-2651-090CN It has an electric motor/clutch on the end that was not working properly. But, if i remember correctly it would stop printing with that 41.5 error.
Before you change that, look in the paper tray from the back of the printer when it is printing and make sure that the paper pickup assembly is only rotating once when it picks up paper. If it rotates more that once it is not working properly and should be repaired or replaced.

by unknown on May 14, 2008 at 2:43pm Add comment
Turns out the ECU was the problem.

I swapped parts in the following order testing after each replacement with known working parts:

1. checked separation roller/clutch installation
2. separation roller
3. separation clutch ( new and refurbished )
4. T2 assembly ( whole unit )
5. refurbished MP clutch assembly
6. replaced MP pick assembly ( including the clutch )
7. Cleaned T2 pick solinoid of all residual tape
8. refurbish D pick rollers on T2 assembly
9. MP pick assembly again ( per Doug's suggestion )
10. ECU/DC Controller

In 99\% of the cases the issue should have been resolved by step 3. Being that it was not and the fact that the service manual information is lacking it became a witch hunt.

I think I have summed up all possible parts save for the laser scanner that can cause this issue. I hope that this post helps someone else in the future with a persistant 41.5.

Thanks goes out to everyone who has provided information regarding this repair over the past few years.

by rhipwell on May 20, 2008 at 7:02am Add comment
This saved me money!! it was totally the unseeded roller. Thanks alot!
by unknown on Jun 30, 2008 at 7:59am Add comment
o que pode ser este erro? 41.5? favor responder em portugues.
by Anonymous on Dec 2, 2008 at 3:32am Add comment
pesaroso, meu português não é muito bom

Apenas afixando isto na esperança de fazê-la mais fácil para alguma outra pessoa abaixo a linha - nós temos um cavalo-força LaserJet 4050 que comece de repente jogar um erro de 41.5 impressoras e imprimir espaços em branco. O reparo girado para fora para ser muito fácil mas se eu não o figurar para fora pode ter resultado em um atendimento técnico caro.
Meu rolo da separação - o rolo azul & cinzento na bandeja de papel - tinha-se movido fora do lugar. Eu empurrei-o apenas para trás o lugar e era fixo.
Está aqui uma página que tenha retratos dos roletes da separação e da alimentação em uma impressora de 4000 séries. O rolo da separação é peça da bandeja de papel e é mostrado no retrato mais baixo:

http://www.printertechs.com/tech/mkinst/mk-4000-7feed.php - Anonymous
Have an HP 4000n with exactly same problem.
The fix you suggested worked perfectly.
Took me 10 minutes and probable saved a hundred bucks.
Large thank you!
by Anonymous on Jan 14, 2009 at 1:31pm Add comment
Thanks to aardvarknine --- That worked!!!
by unknown on Jan 19, 2009 at 7:39am Add comment
I just had this problem on an HP 4000.

Someone had already "fixed" the sticky solenoid in the lower half of the printer, by cleaning all the sticky stuff out, so the problem came back.

However, he did not replace the pad.

It seems that the pad has another function besides noise reduction - when the solenoid is energized without the pad, the arm is momentarily magnetized, and this also causes enough sticking to let another sheet feed.

I installed a pad (a tiny piece of peel and stick felt), and the 41.5 errors, extra sheets of paper in printer, etc. all went away.

I have a buddy that fixes lots of printers for a school district, and he is the one that told me about this.

The pad has to be there...
by robnjay on Mar 9, 2009 at 7:33pm Add comment
Thank you so much for posting this. I just fixed my HP 4000. You guys made my day :) - Anonymous
Magnetism has absolutely nothing to do with it. The pad controls both metal on metal noise and stickiness. If there's even the slightest bit of adhesive left, it will get even stickier when the solenoid heats up. This is what I use http://www.fixyourownprinter.com/specials/misc/tools/S97
by moe on Mar 9, 2009 at 9:26pm Add comment
does anybody know what the error message 93.11 means, for an HP4000?
by unknown on Jul 27, 2009 at 9:18am Add comment
Manual only goes as high as 8xxx Never seen an error code that high.
by Anonymous on Jul 27, 2009 at 9:33am Add comment
Thank you so much for posting that repair! It was such an easy fix and I wouldn't have found it right away! Thanks, again...
by unknown on Dec 23, 2009 at 3:40pm Add comment
I assume you are referring to a designjet 4000 plotter and if so should have posted a new thread since this one is for laserjet. To make you life easier read below:

System Error: 93:11
Unable to pressurize the IDS.
Corrective Action: Try the following:
Remove ALL the Ink Cartridges and reinstall them one by one in to the Printer.
Replace the Ink Cartridges.
Replace the APS Assembly ⇒ Page 8-42.
If the System Error continues, replace the Ink Supply Tubes and Trailing Cable ⇒ Page 8-33.
by dmzcompute on Dec 23, 2009 at 4:23pm Add comment
I'm a little confused - no, I have an HP4000tn Laserjet and I have no idea why you thought it was a plotter. The original posting worked for my issue and I was just happy I found it & it worked & wanted to thank the person who posted it. - unknown
I was responding to the post by Raymond above and did not realize it was back in July. Sorry for any confusion but sometimes the arrangement of posts on this site does not always fall into date sequence and I fell into the trap.
by dmzcompute on Dec 23, 2009 at 9:15pm Add comment
OIC - this is the first time I have written to a forum, so am not used to how they go. I was just so excited to find the answer to my issue so quickly & have it so easy! Thank you for being ready to help people... - unknown
Thank you very much, worked straight away!
by Anonymous on Feb 26, 2010 at 8:59am Add comment
Thank you so much, I'm glad you posted this fix. Even if this is not the first time it's been done, it is nice that people think of others who may be having the same problem (which we did and now it's fixed).
by unknown on Mar 1, 2010 at 8:22pm Add comment
THis fixed it thank you!
by Anonymous on Apr 28, 2010 at 8:53am Add comment
THANK YOU! I asked my IT guy to fix the printer yesterday & out of frustration, started searching. Your help was a blessing. :)
by unknown on Oct 13, 2010 at 4:50am Add comment
aardvarknine. You are the man!!! Thx for the info. The help docs I got from HP was leading me to believe I was going to have to replace the engine controller board and/or the laser scanner. Your fix took all of 30 seconds to resolve the error.


Geo D
by unknown on Nov 15, 2010 at 9:10am Add comment

i could use some help on an error with HP 4050 lazer jet printer. printer worked fine till yesterday 5/4/11. now printer says out of paper error when tray is full... i ck'd the menu and printed it . configuration is correct.

is there a sensor to replace or a flag that may be broken?

please advise if any has had this experience

thank you

lee rose
by lee rose on May 6, 2011 at 10:04am Add comment
We are having the 41.5 error and have replaced all rollers for the tray 2 on an HP LaserJet 4000. We have purchased the tray 2 drive clutch, but now find that we don't know how to install. Can someone direct us to installation instructions for the clutch?
by unknown on Feb 9, 2012 at 10:59pm Add comment
Did you not read the thread? 41.5 errors are caused by sticking pickup solenoids. Read the thread and don't waste your time with the clutch. - moe
Did you not read the thread? 41.5 errors are caused by sticking pickup solenoids. Read the thread and don't waste your time with the clutch. - moe
Here in the future, 2014 to be exact, our 41.5 error was fixed by pushing the roller back into contact with the clutch. Easy peasy.

Thank you Aardvarknine, whenever you are. You saved us a multi-hundred dollar service call.
by Sperry on Mar 10, 2014 at 11:28am Add comment