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Hold(start/stop and escape ) then turn power on
It is work
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Hi
To get survice mode with the printer model
Hold keys ( start/stop and escape) then power on

Copier model mp4000. The error code sc819 or sc878

Does anyone have information on this utility?
I have read that when the boot program Flash ROM is damaged or corrupted, the SD card can be used to start the machine and download the firmware to...