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11.5. Residual amount of toner
You may check the current residual amount of toner in cartridge with the printer's control
panel.
1. Press "Menu" to enter the menu setting interface.
2. Press "▲" or "▼" to select "TonerRemainder".
3. Press "OK" to enter and check the residual amount.
11.6. Online upgrade
This printer supports firmware upgrade with its control panel without a computer.
1. Switch on the printer and then connect it to network.
2. Press "Menu" to enter the Menu Settings interface.
3. Press "▲" or "▼" to select “Online upgrade” and then press “OK”.
4. Please follow instructions to operate. After completion, please reboot the printer.
• if the firmware fails to be downloaded, please reboot the printer and then operate again.
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