Solution
1. Press [Additional Functions], [Left cursor] or [Right cursor] to select [COMMON SETTINGS] and press [OK].
2. Press [Left cursor] or [Right cursor] to select [TONER SAVER MODE] and press [OK].
3. Press [Left cursor] or [Right cursor] to select [OFF] and press [OK].
4. When finished, press [Stop/Reset] to return to standby mode.
NOTE
Press [Stop/Reset] to exit from the menu. If you press [Stop/Reset] before pressing [OK], the setting will not be registered.