Toner cartridge replacement, Replacement, For more information, see – Sindoh M403 User Manual
Page 178: Toner cartridge replacement」 (p. 5-6) and, Toner cartridge replacement」 (p. 5-6)

Maintenance and Troubleshooting
5-
6
Toner Cartridge Replacement
When the toner runs low, [Toner Low] is displayed on the LCD.
You may use the device a little longer. But replace the toner cartridge as soon as possible.
If the device cannot print any more because the toner is completely used, the LCD displays
[Toner Cartridge Change.] Replace the toner cartridge with a new one.
Important
- Shake the toner cartridge five to ten times before installing it.
Shake it after attaching it to the drum cartridge.
- Dispose the used toner cartridge according to regulations.
Caution
- Do not burn the toner cartridge.
You may have burns due to distributed toners.
- Be careful not to have your hand, cloth or device contact the toner. If your hand is
stained with toners, wash them away with clean water or soft cleaner.
- If the toner enters your eye, clean your eye and then consult with your doctor.
Replacement
1
Switch off the MFP, and then press the unlock button (①) on its left side to open the front
cover (②).