light prints

[brancas]

IMG-20220726-WA0005.jpg

hey guys. I have a TA 3051ci giving light prints as seen on the attached doc. The tech assigned to the customer serviced machine ran drum and developer refresh laser scan cleaning calibration and auto grey adjust. He examined all drum and dv units and Laser Scan Unit. All was well. The next step would be replacing laser unit and/or hi voltage unit. Any other suggestions?

[Massimo Italy]

Re: light prints

I would check the transfer belt, maybe if you have a try to replace it and see if the defect goes away

[copykat93]

Re: light prints

Not very familiar with the model, but that looks like a transfer issue, T/S roller, T/S belt..... what direction is paper running?

[brancas]

Re: light prints

I would check the transfer belt, maybe if you have a try to replace it and see if the defect goes away

Transfer belt was replaced

[Massimo Italy]

Re: light prints

Sorry, I realized that the translator has not done his duty, I meant if you can try to replace the entire transfer belt unit, perhaps with a unit that is working on another machine.

[darry1322]

Re: light prints

Running a U089 Sample Set might show more info about what's going on.

[blackcat4866]

Re: light prints

I'd suggest that based on the image in the first post that you've got dirty polygon mirror surfaces, or other dirt on the optics inside the laser.

I've cleaned plenty of these lasers. Just take care not to remove any mirrors. Like the scanner, the laser uses front surface mirrors. If the mirror is flipped over, you'll get both a reflective and a refractive image (it will look blurry). =^..^=

[pascalb.]

Re: light prints

Hello,
as well as blackcat i had dusty lasers on this machine.
Customer smoking next to the machine or very dusty environment.
Good luck

[Geo]

Re: light prints

A couple of thoughts...Were ALL the shipping spaces removed from the transfer belt..Does a DV refresh have any effect ? IS OEM toner being used..?

[brancas]

Re: light prints

A couple of thoughts...Were ALL the shipping spaces removed from the transfer belt..Does a DV refresh have any effect ? IS OEM toner being used..?

The transfer belt was used taken from a working machine. Dv refesh did not work. Toner is OEM. The tech did remove the laser unit and cleaned all mirrors. Will give him another laser unit to install.

[tmaged]

Re: light prints

The transfer belt was used taken from a working machine. Dv refesh did not work. Toner is OEM. The tech did remove the laser unit and cleaned all mirrors. Will give him another laser unit to install.

The mirrors on the polygon motor get dust in the trail end of each mirror. Remove the laser, flip it over and remove the 3 screws that hold each polygon motor in. That's the easiest way to clean them.

[Tom]

Re: light prints

Weird how different environments cause these problems. Sounds like many of you live in dry dusty areas to have these problems. Here in Louisiana it's the humidity that causes the same symptom. We don't have much of a dust issue, but let that A/C not work for awhile when it's 90% plus humidity in the summer and we get light copies too on pretty much every machine. I can't place a kyocera in a warehouse or anywhere not climate controlled.

[JR2ALTA]

Re: light prints

The transfer belt was used taken from a working machine. Dv refesh did not work. Toner is OEM. The tech did remove the laser unit and cleaned all mirrors. Will give him another laser unit to install.

As blackcat and tmaged said, this is 100% dirty polygon mirrors. NOT laser glass, which your tech may have cleaned. He needs to dig further. Don't waste a good LSU by replacing it.

[Geo]

Re: light prints

Another thought... Other than the laser assy , did you check the transfer roller press springs and the side door latches.

[brancas]

Re: light prints

Just an update. Gave the tech a used laser unit from a working machine and that solved the problem. Thanks for all the helpful advice!!