LJ M600

[copyman]

Did a PM on this machine and the new fuser is really loose which makes a loud grinding noise because gears aren't meshing. If I put pressure on the gear side it is fine. I put old fuser side by side with new one and they look identical. Tried another new fuser out of a maint kit and same thing. Put old fuser in and no noise. I had to leave old fuser in so they could use it. Anyone ever have this problem or have any ideas.

Thanks in advance

[theengel]

Re: LJ M600

Seems like it's gotta be either the gears or the clips that hold the fuser in place. Or some part of the outside casing maybe.

[Printerdude]

Re: LJ M600

Are you using New OEM kit or a Remanufactured kit? Check the large gear on the fuser, it should be a helical gear, not a spur gear. Check the latches on the fuser also.

[copyman]

Re: LJ M600

Thanks for the replies.

Using Genuine HP. I have to go back and check #'s on boxes. I have # CF064-67901 as correct maint kit. Like I said they looked identical side by side with old one. Really weird. Maybe my supplier sent me 220v instead?

I will let you know what I find.

[Printerdude]

Re: LJ M600

You got the right 110v kit, a 220v would have given you an error message. Did you hear the latches click when you installed the new fuser? especially the gear side of the fuser. Another area to look at is the fuser drive assembly gear for wear. It may be worn, so that the old fuser assembly which probably have worn bushings will work and the new fuser won't. This printer uses a fuser drive assembly, not a swing plate assembly like the LJ 4250 since nothing swing in this assembly, therefore the fuser drive assembly and the fuser have worn together and a new fuser will have a gap between the two gears make a grinding noise. Hope you find a solution.

[copyman]

Re: LJ M600

Yes heard latches click.

Good theory Printerdude. Makes sense. Have you seen this before?

Will let you know what I find out

Thanks again

[subaro]

Re: LJ M600

This problem reminds me of the HP2420. Identical symptoms you are describing here. would install new fuser and noise will still be there, fuser clicks in place ok.
The solution was to replace the fuser drive gear kit. The noise would not be totally eliminated. see the link below for the parts you will need for your repair.

HP LaserJet M600 601 602 60x Fuser Gear Noise Repair Kit Premium Quality ISO9001 | eBay

[subaro]

Re: LJ M600

Did a PM on this machine and the new fuser is really loose which makes a loud grinding noise because gears aren't meshing. If I put pressure on the gear side it is fine. I put old fuser side by side with new one and they look identical. Tried another new fuser out of a maint kit and same thing. Put old fuser in and no noise. I had to leave old fuser in so they could use it. Anyone ever have this problem or have any ideas.

Thanks in advance

Actually there is a complete fuser drive assy for this series machine. type this part number in the google search and see the image and companies that may carry them. I think this part may be obsolete. RC2-2432-M600

[copyman]

Re: LJ M600

Confirmed maint kit # CF064A. Also confirmed Product code on back of printer CE990A. I guess only thing left is to try replacing fuser drive gears.

Thanks

[Printerdude]

Re: LJ M600

Yes heard latches click.

Good theory Printerdude. Makes sense. Have you seen this before?

Will let you know what I find out

Thanks again

Have not seen this on a M600 series, but on the 2300, 2420, P3005 and of course the 4250/4350 printers, but I have seen printers that were noisy caused by remanufactured fusers. As stated above part number RC2-2432-M600 is still available, this is an aftermarket part as HP did not make this part available. Seems odd that you are having this problem, HP redesigning the fuser drive assembly for the better. A bit of work to install. Hope you got the real deal and not a reman or counterfeit/one to look like a OEM kit. Good luck!

[copyman]

Re: LJ M600

Good point about the maintenance kit being counterfeit. I was thinking the same thing but never heard of a maint kit being fake. Is there a way to tell genuine from fake? Usually there something different with fake stuff.

Thanks

[Printerdude]

Re: LJ M600

As far as fuser assembly being described as being new, look at the paper delivery rollers (four rubber rollers on shaft) for wear, there should be no wear at all. Most or probably all fuser rebuilders don't replace this part, so this should be a good sign of a remanufactured fuser. As far as new kit being a counterfeit kit or a kit being sold as new, look at the outside packing and should have the HP printed on the box and also the part/kit number as well. Hope you got this kit from a reliable parts source. There is a manufacturer out there that make new aftermarket fusers but still is not quite the quality of an OEM. One more thing, on the box there should be a serial number label, this should match the serial number on the fuser.



This is a fake kit or one to look like a HP kit. No HP logo. Same box for many different model.




This is the retail version of an Genuine OEM HP Kit for LJ M600 series, notice the white label on the box, this is the fuser serial number.
HP may have different version of this box, but this most common for now.
HP do have a plain box as well, mostly for HP technicians. These may have a new fuser or rebuilt fuser, you have to look at the fuser delivery rollers or know what to look for.
Some parts distributers will make there own kits using all New OEM parts (as they say) and package in a plain box, these kits sells for less, same kit but lower price.

If you have pictures of the new fusers, can you post them? A photo of the gears and up close shot of the delivery rollers and even the box, as I may help you with this.