I have a client with a HP P4014n and after about 1500 to 2,000 prints the genuine Hp toner cartridges are going bad and dumping toner in the machine. Prints come out with a wide dark shading with spots and chenks of toner on the page. I swapped the toner cartridge out of an indentical machine and no problem. But I know after a while it will start dumping toner also. I tried swapping the fuser and transfer roller but it's clearly the toner, I can see all the toner spillage. Is there something electrical that can be going on to cause the toner to go bad after a while and start leaking/dumping? The customer has gone several rounds with new genuine toners and always the same thing. I vacuumed the last time and with a new toner installed it was ok for awhile but came back. I almost thin the toners are bad but it would have to be whole batches of these and I have seen no mention anywhere of this being a problem with the toners. It seems the machine is ruining the toners...
-
-
Re: HP P4014n toners going bad?
It may be a formatter issue, but I would upgrade firmware first, since that's free and it can correct similar problems.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!". -
Re: HP P4014n toners going bad?
Thanks, will try that. I thought maybe the transfer roller was not seated properly, it must have some contact with metal at the right side after the toner is installed to function, could it be that the contact iis not happening? There is a white plastic piece that the roller end fits into on the right. Doesn't seem to be any way the metal end is going to see any other metal. Am I missing something?
I tried the transfer roller from the working machine and that did not make any difference. If I borrow the toner cartridge it prints fine. Also, the printer thinks the problem toner is a non-hp cartridge - it says so on the display - but it is a genuine HP, I can see the label and it does not have a hole that was used to refill it, and the customer swears it is from Staples.
As I said before, a new toner does fine for about 1500 to 2000 prints and then it goes bad and starts spilling and leaving the wide gray streaks down the page. This has occured about 4 times for them.Comment
-
Re: HP P4014n toners going bad?
Is the transfer roller just sitting loose on the right side? or is it in securely? The clip that holds the transfer roller may have broken off. It is really fragile. I had that happen to me once. If so, you'll need a transfer guide assembly. It's a bear to replace because you have to take the frame apart to put it in. RC1-2269 is the part number.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
-
Re: HP P4014n toners going bad?
Thanks, yes, the clip is secure, I compared it to the working P40104n just to make sure it was not missing something. I am going to try the firmware update later this morning and will report the result soon.Comment
-
Re: HP P4014n toners going bad?
The firmware update did not work, the customer is going to let me know if they want to replace the printer, I told them it was not worth repairing. Customer is definetely using genuine toners, but teh display still says "non-oem toner" installed.Comment
-
Re: HP P4014n toners going bad?
This Parts & Service manual can now be purchased for $12.77 and downloaded immediately after payment from
Just Manuals ~ The Internet's largest selection of manuals ~ Instant Downloads
Paul@justmanuals.comComment
-
Re: HP P4014n toners going bad?
My first guess would have been recycled toner's.
Assuming its original toner, and if the toner is dumping from the waste container of the cartridge... bad transfer from the drum onto the paper, could be a transfer roller issue, a HV bad contact or even HV board prob (or non oem toner) if the transfer isnt good enough residue toner will acumulate very fast on the waste container of the cartridge, and will end up on a deficient cleaning of the drum/toner dumping/general print "dirtiness".
You can do an emergency stop and take a peek onto the drum and see if theres a strong latent image on the drum after the area of contact with the paper... ideally you should only see a very light image...Comment
-
Re: HP P4014n toners going bad?
This helps, thanks. From what I found it is the DC Controller or the Power Supply gone bad. I had replaced the transfer roller and that did no good: I do think it had something to do with the electrical connection with the transfer roller, on my first attemp to check the machine I vacuumed the area and I took the transfer roller out of the working P4015 and put it into this one and it worked fine! So I thought that was the problem A couple of days later when I installed the new roller I ordered it did no good. I then went back to the working P4014 and borrowed the transfer roller again and this time it did not work either. Something about the ground connection maybe? I know the transfer roller has to get electricity to it some how from the right side white plastic holder, so that I think is the problem area. The whilte plastic on the right side that holds the transfer roller looked perfectly fine, went up and down just fine. So the customer is replacing the machine and I will take back this problem child and see if I can repair it. Does this sound like the right track?Comment
-
Re: HP P4014n toners going bad?
There are 2 wire contacts on the left side around the transfer roller area that make contact with the cartridge. Those make contact with the power supply. You might want to check those too.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
-
Re: HP P4014n toners going bad?
Looked at those but they seemed ok, but will re-look when I get into my shop here. This might explain why a new cartridge would last between 1500 and 2000 prints and then start spilling toner, when it's new it has been collecting all the extra toner in the waste toner hopper due to the electrical problem but then it fills up and overflows. Does this make sense? So the contacts are not telling the cartridge to stop releasing toner?Comment
-
Re: HP P4014n toners going bad?
From the looks i'd say you're in the right track.
Those contacts usually only apply high tension charge to the drum and dev roller... drum gets charged... laser beam "draws" the image in the surface "erasing" where there shouldnt be any toner and as the drum rotates by the dev... the toner dust "jumps" onto it... the transfer roller gets charged with a tension inverse to the drum... making the toner dust "jump" towards the transfer roller, since the paper is in the middle its stays there.
If i had to take a guess i'd definitly lean onto the transfer roller... (maybe not the roller itself... maybe the the HV connection of the spring that pushes the roller bushing towards the drum) but definitly seems that alot of the toner isnt passing from the drum onto the paper making the waste fill way too fast...
If you have a decent print, the cartridge contacts might/should be ok, else you'd have a very very light print, besides HP's for most part make readings thru those contacts to check on the cartridge to adjust the HV, if there was anything wrong or reading out of normal you'd probably get an insert cart. error... (you could use some ole duct tape to isolate one of them or both and see whats the machines behaviour, but it should refuse to work)Comment
Comment