The Background Is Generally Dark
Troubleshoot by checking in the following order:
Are White Areas Lightly Colored?
Setting [Prevent Fogging] to [On] may solve the problem.
* When you select [On], the print density may decrease.
Check the Remaining Amount of Toner in the Toner Cartridge.
Check the remaining amount of toner in the toner cartridge, and replace the toner cartridge if it is low.
Checking the Remaining Amount of ConsumablesReplacing the Toner Cartridge* Depending on the usage condition of the machine, the actual remaining amount of toner may be lower than indicated or the parts may be deteriorated. If the problem persists, replace the toner cartridges.