Cause of error code TONER LOW
The message first appears when about 15 percent of the toner is remaining in the toner cartridge (about 1,500 pages remaining for the 10,000-page cartridge and about 900 pages remaining for the 6,000- page cartridge at five percent coverage). Depending on how the printer has been configured in the configuration menu, it will either continue to print or stop.
Solution for error code TONER LOW
If the printer has stopped, you can resume printing by pressing GO for each job. The high voltage power supply could also cause this error.