C6500 Y Tonner Hopper Issue

[Synthohol]

you can try swapping the sensor with another color to see if its just not detecting toner. if it asks for the other color its a bad sensor. if stays the same maybe call a priest for an exorcism?

[tulintron]

you can try swapping the sensor with another color to see if its just not detecting toner. if it asks for the other color its a bad sensor. if stays the same maybe call a priest for an exorcism?

This is a piezoelectric sensor like any other used by Konica Minolta.

It is possible to test it using the I / O check method.


01-04 PZS/Y
01-05 PZS/M
01-06 PZS/C
01-07 PZS/K

001 (HIGH) toner
000 (LOW) no toner

Removing this sensor will take all of your time.

[tulintron]

Yes the bottle rotates, I checked. Also I can hear the bottles spinning/the machine asking for toner when I open/close the door after the "Add Y toner" message appears. Toner does fall from the port on the toner supply system that supplies toner to the Y DV unit when I push it down with my hand and the machine has used up Y toner bottles at a relatively normal rate while this problem has been going on, so I guess that rules out the clog hypothesis?

I will check what you mentioned about the e-ring clip on the toner supply cap hopefully tomorrow.

toner.jpg the "e-ring" clip is below the cover. I ended up scoring up

[orestesp]

Hello again,

I checked the TCR value today, Y was at 80 (!), I ran a few copies of test pattern #53 to de tone it at 255. I left it at ~120. While I had the toner supply unit door open, I could see the auger in the Y toner hopper agitating the toner and toner would come out when I pushed down the lever that opens the little door that goes to the DV unit.

I checked the waste toner box and from what I can tell, a pretty significant amount of Y toner/DV must have been thrown out by the machine... Did the drum pull the DV and threw it out? There is also a large magenta spot on the box, I hope this isn't the messenger of bad news...

IMG_20210406_141555-min.jpg

I think I should replace the Y drum unit and the Y dev again, do you think this will fix this problem?

Thanks again.

[tulintron]

replace only the drum and test it.
replace the developer only when you are sure of the solution.

[orestesp]

replace only the drum and test it.
replace the developer only when you are sure of the solution.

I am afraid most of the Y developer is sitting in the waste toner box. This is what the Y developing unit looks like right now. I don't think the developer can recover after this, can it? After all, the toner doesn't contain any developer powder.

IMG_20210406_132649.jpg

[valberto]

The tonner is Konica Minolta Original or compatible?
I'm having the same problem with compatible tonners.

[orestesp]

The tonner is Konica Minolta Original or compatible?
I'm having the same problem with compatible tonners.

I was (and still) use all original on this machine. The problem turned out to be a doctor blade that had a too narrow of an opening towards the side that the TCR sensor is located (had some density issues due to this).

The unit must have been this way from factory. Anyway, after adjusting the gap to be roughly 0.75mm on both sides, the problem was resolved.

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