bizhub 420 code reset-service mode
April 22, 2009
how to enter in service mode when error code appear?
turn of the copier -main switch.
press and hold utility key and turn on the copier and still hold utility key until "trouble reset "appear on the screen.
now you can enter in service mode (without uti/counter,details), only code
Now , in service mode you can view or modify various parameters.
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