Can I use Kyocera toner for utax Copy machine?

In copy mode press 10871087....130....start...turn copier off then on.

you must use OEM toner if you use aftermarket toner that says for use in you will get this problem if you have been using aftermarket toner you will have to change developer or empty all toner from developer unit and start with OEM toner Kyocera stamps their logo into cartridge

Error 6000 is fuser related.
Broken fuser lamp error
=bad thermistor
=broken thermal cutout
=bad fuser lamp

check these items, if possible replace fuser unit.

I am not sure about Kyocera but some companies embed in the firmware of the printer and on the toner catridges a code that prevents you from using cartridges from one country in another printer. They do this to limit people importing cartridges from a country where they sell them cheaper to countries where they gouge users. Unless you can rechip them, check ebay or you got a defective lot of toners (possible) you may have to source local product.

One button being stuck could be the issue. It could also be that the panel is going out.

For stuck buttons:

TURN MACHINE OFF
UNPLUG MACHINE
Spray alcohol on buttons (Do NOT soak the panel)
press all buttons repeatedly

NOTE: This is a quick fix. If you do not want to damage components, call an experienced technician.

if you are getting blank copies nothing on the page you need to check the drum main charge or the developer unit is locked into place correctly and if the developer unit is turning take out the developer unit and see if there is an even coating of dev and toner on the roller use a piece of paper rub of a small are on the developer roller put in the machine and do a copy after take out the developer unit and see if where you marked is visable if it is then the developer unit has a problem as it is not turning
Check the main charge roller it is connected to the side door

Based on your discription it is the process unit. The toner cartridge wont cuase spots on this machine.

J11 is telling you that the copy paper has not fed from the 1st paper cassette under the machine.This may be due to incorrectly loaded paper,cassette requires adjusting or the feed roller requires cleaning.The feed roller sits in the machine and you will need to unplug the copier and remove the paper cassette to gain access,Clean the roller with lint free rag and spray and wipe.

hi,
the c7100 error is a problem with the Auto Toner Sensor.

the first this to check is that you are using a genuine toner cartridge.

if you are please try to re-set the developer by keying in 1087 1087

then 130 press start and then start again once this is done please press stop twice, then 001 and start

if this does not fix it it may need either a new sensor or a new developer unit.