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1. Display [SERVICE MENU] on the menu screen and press the MENU/SELECT key.
2. [ENTER PASSWORD] message is displayed.
3. Set first digit of password with the up key??/down key?? and press the right key??.
4. Repeat the above procedures to set up to seventh digit of password.
Enter "KMM7450" for service password. Press the MENU/SELECT key.
5. Press the MENU/SELECT key.
I just got done replacing my toner. You'll need to change toner and most likely all of them. There is no other solution. I refill mine by buying the bottle toners. It can be messy and you'll need to take some parts off the cartridge to get to the opening plug and reset the lever so that the printer knows the cartridge is full. It is cheaper than buying a toner. The cartridge has a life of about three refills. Anyway hope this answers your problem.
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