SHARP MX3570V

[saulationseniortech]

Re: SHARP MX3570V

I am having an issue while printing from the computer.
The print comes out very faint then appears to clear
up where the images are fine. I'm thinking it might be
the lower heat roller lamp.

The Blk DV Unit and the Drum and Blade have been updated in the
last 6-months or so. And the fuser has been updated.

I can't say I have have ever seen this happen before. I'm not out at
the client's office yet. They have some sick people that are out and they
wanted me to come in at the end of the wee to fix the issue.


Any suggestions greatly appreciated.

Does it smear? do you have samples?

[copiertec]

Re: SHARP MX3570V

Have you tried the secondary transfer unit? There is a ground spring that touches a contact right above the primary transfer unit, maybe it is not fully touching the contact or the contact is dirty?

[saulationseniortech]

Re: SHARP MX3570V

I have found out the following since I started this thread -

Client is having the imaging issues whether printing or copying.
Last week they were doing a lot of printing for a conference they
were attending and did not notice the copy side of the machine
was affected, too.

I have done the following -

67-33 - Good Values
67-34 - Good
52-22 - All Good
All Drums. Blades, and MC's changed within the last month
Fuser has been Updated
Changed out Primary Transfer

I have an attachment showing the distorted imaging issue.
I don't know if I got that right.

Did you replace just the belt? or the whole transfer belt unit? Check the secondary transfer belt. I would recommend to replace both units, not just the belts. Also make sure you the copier has the latest firmware. Do a full calibration and clean Laser glasses.

[Tech2002]

Re: SHARP MX3570V

When I changed out the Primary Transfer it was the whole unit.

I forgot to add that I have done a 61-1 Laser Check - Good

Firmware has been updated to most resent.

The issue I have described intermittent. It appears to only act up as described after it has
been working long runs. Plus I tried most of the suggestion recommended to me - very
appreciated.

Because the the long run and problem scenario I decided to change out the Transfer Control PWB.
It was the heat thing that made me to look in this direction. I've got it replaced and it is a wait
and see.

One of the up ticks with the replacement board the colors, from a copy to a copy - those color copies popped!
Just that alone made me think it was a good thing to have specifically changed out that board.

I'm not out of the woods yet, but will update in a week or so - it shouldn't take too long to see
a positive or negative final results.

I sincerely appreciate everyone's input!!!

[doyvid]

Re: SHARP MX3570V

We had this same issue on a 3570N. One of the few problems we never solved. The difficulty is it's so intermittent, you can do 500 or more test pages onsite perfectly, and then the customer calls the next day. Printing and copying.

The service history for our machine (in the period since problem arose) shows the following. In addition I know for certain we tried swapping in other used primary and secondary transfer units, possibly other things too. The customer's office was nearby so we tried lots of stuff that might not be on this list:

-cleaned ID sensors, laser slit glasses
-replaced transfer clutches pclc-0399fczz
-replaced tc hv pwb
-replaced ptc
-rebuilt primary transfer
-replaced colour drums- new not rebuilt (was due for PM)
-rebuilt fuser (due for PM)

Ended up giving the customer a different machine and we moved this one into our service area where it remains and randomly prints just like your sample every few months. It would be more often but it gets very low usage, maybe 100 pages per month.

I don't see any record of us swapping the laser unit or board so I'd vote for those as most likely cause. Didn't have a parts machine for those expensive parts and customer was rightly getting frustrated.

Unfortunately I don't have a sample from our machine, but will post one next time it happens.

[Tech2002]

Re: SHARP MX3570V

Thanks for writing out your story on this one.
Our story is identical.

If I can find a cure, I'll make sure to post it here.

[Tech2002]

Re: SHARP MX3570V

Have you tried the secondary transfer unit? There is a ground spring that touches a contact right above the primary transfer unit, maybe it is not fully touching the contact or the contact is dirty?

I was looking to see if by changing out the Transfer PWB
took care of the issue.

But I will check that this coming week.


Thank you for the input!

[Tech2002]

Re: SHARP MX3570V

Finally, I think I got it figured out.

Things were slow figuring this out. I have been sick Covid and was researching.

I changed out 2nd Transfer - It helped but did not completely resolve the issue.

I swapped out the Transfer Separate Drive Unit. I did not think this would fix the
issue - the issue of light printed or copied images.

I first cleaned the Drive Unit. The Fuser was recently rebuilt - but this did not take
care of the issue.

When I swapped out the Transfer Drive Unit and tested and tested and tested - this
seemed to do the trick.

The attached is what I changed - Thank you to everyone that helped with their input!


TransferSeparateDriveUnit.pdf

[Tech2002]

Re: SHARP MX3570V

What I thought was a cure did not yet work again - That was changing the Transfer Separate Drive Unit.

Got a email today from my client telling me we are back to square one.

I'll update when I have something new to report.

I'm the only one that has ever had this as a problem. Lucky me!

[copiertec]

Re: SHARP MX3570V

What I thought was a cure did not yet work again - That was changing the Transfer Separate Drive Unit.

Got a email today from my client telling me we are back to square one.

I'll update when I have something new to report.

I'm the only one that has ever had this as a problem. Lucky me!

Damn, best of luck.

[Tech2002]

Re: SHARP MX3570V

Thanks. I'm being tested.

[doyvid]

Re: SHARP MX3570V

I'm the only one that has ever had this as a problem. Lucky me!

Not true, see my post on page 2! It just also hasn't been solved yet. But should help by elimination a bit.

[spanky]

Re: SHARP MX3570V

I had another model that was acting the same way.

I cloned all of the information from the machine, ran sim 67-17 to reset the printer, and then pushed the cloned information back into the machine.

Never had another call for this problem.

[branjake]

Re: SHARP MX3570V

Try the clutch in the fuser drive unit, that clutch moves the transfer roller. We just had this issue.

[Sage632]

Re: SHARP MX3570V

have you checked the prints on the itb? if they look good on the itb, then check the secondary xfer unit. and clean the toner density sensors on 2nd transfer and the calibration senors above the itb.

light prints rarely come from the fuser.

you can also manually adjust the fuser temp settings

raise the temp 10 degrees for all the settings and see if that affects the print quality. that will eliminate the fuser.