MX4101N Possible main drive issue

[teklife256]

Re: MX4101N Possible main drive issue

This same issue happened to me on a 5500. It turned out to be the primary transfer gear was cracked. Were you able to come up with a solution?

[austonrush]

Re: MX4101N Possible main drive issue

Hi Akitu, I was not able to fix this. I currently have the machine at my office and the customer got another one.

When you say the primary transfer gear do you mean the one attached to the transfer belt or the one inside the copier driving the primary transfer unit? I've replaced the transfer belt twice and that did not do anything.

I'd love to actually fix this thing

Cheers

[faxman28]

Re: MX4101N Possible main drive issue

When you replaced the primary transfer unit, you installed a brand new mx-410U1 ? The gear is attached to the primary transfer unit, see attachment.

When you perform 50-22 you don't have a NG R4.8(example) in any of the results on the display.

[austonrush]

Re: MX4101N Possible main drive issue

Yes, I replaced that gear on the transfer belt initially and then I replaced the whole belt with a brand new one. Both times exactly the same.

If I run Sim 50-22 I get the all good, however they do move quite a bit if you run once and then right again lets say k goes from -2 to plus 3 and back etc. Every time you print a page the issue repeats itself exactly the same as before. It is not random, which leads me to a physical problem. I'm thinking there must be a gear between the primary transfer unit engage gear and the motor that turns it. It has to have many small teeth and I'm thinking stripped teeth. I'm expecting this gear to do 2 full rotations per one full transfer belt rotation. The odd thing is I don't hear any noise or grinding....

[faxman28]

Re: MX4101N Possible main drive issue

did you do 61-4 and measure the document , this sets the main position of the LSU along with black as you have to physically move the LSU . Also 44-13 and 44-2 need to be done, these are the reg and density sensors for the transfer belt. The adjustment section of the manual has you do these settings in certain order. Th transfer belt is driven by a stepping motor , the motor drives the gear that connects into the main transfer belt gear, the gear on the transfer belt is the one that normally breaks, the gear driven by the belt motor I have not seen break(but anything is possible.) The reg/density sensor unit controls belt speed and write timing in the lsu and drum speed? .

[austonrush]

Re: MX4101N Possible main drive issue

Alright everyone, latest update on this machine is:

(I now have 2 with the exact same problem)!!

I've tried swapping the whole main drive assembly (with motors attached), the results were conclusive, the copier still has the exact same issue... I've now replaced everything mechanical that is driving the transfer belt and have come to the conclusion it must be an LSU problem. I will keep everyone posted as to my findings!

LSU swap is up next

cheers

[austonrush]

Re: MX4101N Possible main drive issue

Please see the attached document.

I ran into this running sim 44-31. I have a very weird drum phase pattern that prints out. Anyone seen this before? Both MX4101N printers are showing this pattern.

Thanks Everyone!

[blackcat4866]

Re: MX4101N Possible main drive issue

Wow! That is a serious hiccoup in the cyan and magenta, yellow too. =^..^=

[Akitu]

Re: MX4101N Possible main drive issue

Wow! That is a serious hiccoup in the cyan and magenta, yellow too. =^..^=

Always living up to your signature, I see.

That's definitely a heavy colour shift, and you say you've replaced the transfer belt and the drive pack... The only other thing would probably be your LSU, but beyond that you're venturing into uncharted territory.

[austonrush]

Re: MX4101N Possible main drive issue

Hey guys,

I finally had time to install a brand new lsu into one of my 2 mx4101N copiers exhibiting this issue and after running through the adjustments the outcome was.............................

NO CHANGE!! The print still begins in focus and then every few inches one of the colours comes out of alignment and then goes back into alignment....

Does anyone have anymore ideas of where to go next? I've changed the following:

Primary Transfer Belt (brand new unit) (new gear)
Secondary Transfer Belt (brand new unit)
Main Drive Gear Assembly (including all motors)
LSU (laser scanner unit)

Thanks to everyone who has contributed to this post. When I find the cause I will be sure to post exactly what fixed it!!

[Akitu]

Re: MX4101N Possible main drive issue

Hey guys,

I finally had time to install a brand new lsu into one of my 2 mx4101N copiers exhibiting this issue and after running through the adjustments the outcome was.............................

NO CHANGE!! The print still begins in focus and then every few inches one of the colours comes out of alignment and then goes back into alignment....

Does anyone have anymore ideas of where to go next? I've changed the following:

Primary Transfer Belt (brand new unit) (new gear)
Secondary Transfer Belt (brand new unit)
Main Drive Gear Assembly (including all motors)
LSU (laser scanner unit)

Thanks to everyone who has contributed to this post. When I find the cause I will be sure to post exactly what fixed it!!

Only other thing I could think of would be adjusting timing sims, but I have no experience in that area and couldn't be of any use. You've replaced every typical culprit of this problem.

[austonrush]

Re: MX4101N Possible main drive issue

Only other thing I could think of would be adjusting timing sims, but I have no experience in that area and couldn't be of any use. You've replaced every typical culprit of this problem.

Sim 48-6 is a little scary, I think a firmware update after messing in there would change things back to there original settings, however to be on the safe side I'm going to write down all the settings before "playing".

Out of all these motor settings I've only ever adjusted the fsm (fuser speed motor) manually to solve creasing issues on 11/17 paper.

[blackcat4866]

Re: MX4101N Possible main drive issue

Good Luck Brandon. Do you have any samples of what the effect was on a standard test chart. I'd like to be able to recognize this if it comes my way. =^..^=