I have a Sharp SF-2020 pedestal copier. The red triangle dots appeared above the yellow digital copy #. Prior to this, it took over a minute for the copier to "boot up". I added factory toner and the red triangle dots are still there and it still takes awhile for the machine to warm up. Does that mean my waster toner is full and needs to be emptied. Thanks...Roger

The toner cartridge that you're using right now is completely over and cannot be refilled anymore. You need to replace the old toner cartridge with a brand new toner cartridge to fix the problem.

Hope it helps.

Thank you for using FixYa. The toner cartridge that you're using right now is completely over and cannot be refilled anymore. You need to replace the old toner cartridge with a brand new toner cartridge to fix the problem.

Hope it helps.

Thank you for using FixYa.