Entering Invalid Engine Mode; Entering Recovery Mode; Entering Restore Point - Konica Minolta bizhub 4020 Service Manual

bizhub 4020/3320 Service Manual

5.3 Entering invalid engine mode

This mode is used if the machine has invalid code and needs the correct code loaded. After entering
this mode, the firmware code can be updated.
1. Turn off the printer.
2. Press and hold the 3, 4, and 6 buttons simultaneously.
3. Turn on the printer.
4. Release the buttons after 10 seconds.

5.4 Entering recovery mode

Note: This function is available on the bizhub 3320 only.
This mode will allow the printer to boot from a secondary set of instructions to allow a code flash to the
printer. Code can be flashed from a PC via USB.
1. Turn off the printer.
2. Press and hold the 7, 2, and 8 buttons simultaneously.
3. Turn on the printer.
4. Release the buttons after 10 seconds.

5.5 Entering restore point

The restore point function is similar to the PC's operating system restore.
In the event that a new firmware update causes problems in the printer, the administrator can roll the
printer back to a previous state.
This function is available on the bizhub 4020 only.
1. Turn off the printer.
2. Press and hold the 7 and 8 buttons simultaneously.
3. Turn on the printer.
4. Release the buttons after 10 seconds.
Notes: If no firmware updates have occurred since the machine was built, there is no restore point and
the key sequence is ignored.
Exit Config menu
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