How to determine which toner run out the ink.

open fron door and slide cartridges out, slide new cartridges in, just remove protective tabs from new cartridges and that is all...

Try unplugging printer from the power and connecting it back.

Try also extracting all toners and putting toners back.

The smart panel software can give you the number of images that were printed by the printer.
In reality this is only a crude way of telling you how much toner is left in the cartridge. The printer really has no way of telling you how much toner is actually left inside. Because it does not know how much toner is required for your particular way of printing. It is kind of like a filling up your car with gas and only using your trip odometer to determine how many miles you can drive before you run out of gas. If you drive in the city, your miles till empty is less than if you drive highway.

samsung clp 500 toner cartridge can not use samsung clp 510
bcase clp 500 is without chip and clp 510 chip base cartridge so never u can user.

is it a genuine toner?

some printers will not work with certain "reman" toners.

The problem is probably the imaging drum. They don't last forever Amazon com Samsung CLP 500RB OPC DRUM FOR CLP 500 SERIES Electronics

This error is caused by the Waste Toner Motor 'stalling' - usually as a result of the Waste Toner Full message being ignored for too long, and the waste system becomming overful.

Usually best to replace the Waste Toner Motor assembly.

They are for sale on auction websites from time to time.

Just found the troubleshooting manual for the printer and emptied out the waste tank. Seems to work fine now.

yes refilling will solve the problem.but you have to change the green colour small chip on the side of the toner to make it work,as the new chip will be detected as new toner in the printer.

CLP-500 and CLP-510 toner cartridges are identical in shape, but the internal microchip and toner sensors are diferent. therefore they are usually mixed up, producing the problem just described. If you check your toners and happen to have the correct ones, then have them replaced by your supplier; or better yet, try another company. Not all remanufacturing companies are able to fully reproduce the algorythms contained in such chips.