Forgotten admin password / factory reset Konica bizhub C3120i

[maxtemp7520]

Hello everyone, I hope someone will have the solution to my problem.

I have had a Konica C3120i printer since June 2024. No problem with it so far.

I set it all up from the administrator interface with the "admin" login and I changed the default password which is the serial number.

Problem: for several weeks, I have been unable to connect to the administrator interface even though I have not changed anything. I always have the message "The username or password is incorrect" and after 5 connection attempts, I have to turn it off and on again each time.

Admin login and password, it does not want to.
Admin login and default password (serial number), it does not want to.
I also tried with my administrator name, email address in login, nothing works.

When I turned it on, I held down both buttons to enter the "Special Boot Menu", I pressed "Password initialize" and nothing either.

Does anyone have a solution to reset the administrator password?

I contacted Konica, the price asked to intervene is more than 50% of the new machine even though it is not 1 year old.

Thank you for your feedback.

[tsbservice]

Hello everyone, I hope someone will have the solution to my problem.

I have had a Konica C3120i printer since June 2024. No problem with it so far.

I set it all up from the administrator interface with the "admin" login and I changed the default password which is the serial number.

Problem: for several weeks, I have been unable to connect to the administrator interface even though I have not changed anything. I always have the message "The username or password is incorrect" and after 5 connection attempts, I have to turn it off and on again each time.

Admin login and password, it does not want to.
Admin login and default password (serial number), it does not want to.
I also tried with my administrator name, email address in login, nothing works.

When I turned it on, I held down both buttons to enter the "Special Boot Menu", I pressed "Password initialize" and nothing either.

Does anyone have a solution to reset the administrator password?

I contacted Konica, the price asked to intervene is more than 50% of the new machine even though it is not 1 year old.

Thank you for your feedback.

Can you post a picture of this "Special Boot Menu"?

[Synthohol]

cant you go into service mode. stop-9 and change the admin password there like normal?

[tsbservice]

Can you post a picture of this "Special Boot Menu"?

Well... forget about it just opened manual. It's not usual KM stuff there so no way as we did. We had zero of these in the field.

[maxtemp7520]

Yes, this is the picture of the menu.

[ronny2502]

Hello,
this model (bizhub C3120i) doesn`t look like konica minolta. - It could be developed by lexmark. - In that case you'll (could) find a jumper on "mainboard" to reset settings.

No warranty! But have a look at this: https://www.youtube.com/watch?v=nXs9x-KZWhM

best regards,
Ro

[maxtemp7520]

Hello,
There is no button or jumper on the mainboard.
Regards.

[ronny2502]

Hello,
sent you a PM with link to SM.
Maybe you can reset AdminPassword in ServiceMode.

Regards,
Ro

[maxtemp7520]

Hello ronny2502,

Thanks for the Service Manual document, I managed to restore the default settings.

Problem solved !

Regards,
Maxime

[Patryk Cz]

Hi maxtemp7520,
I've the same problems, could you please give me some tips how did you solve it?
Configuration Mode still required the password, and Safe Mode didn't help either.

[ronny2502]

Hello, Patryk Cz

sent you a PM a couple of days ago.
Did it help to solve the issue?
best regards,
Ro

[maxtemp7520]

Hello Patryk Cz,

I was indeed able to reset the printer to default mode thanks to the comprehensive instructions sent by ronny2502 .

You need to unplug the printer and plug it back in while pressing the "home" button.

You will arrive at a SPECIAL BOOT MENU screen.
You need to press the words "BOOT" and "MENU" on the screen and press the "home" button while holding down BOOT and MENU.

A numeric keypad will appear. Enter the code: 63656#
Then OK.

Click on the "CE Diag" menu.

In this menu, I cleaned everything the menu allowed.

In "Installation":
Clear All NVM
Clear Job History
Clear Accounting PV
Clear Device Data

Then, the last menu at the bottom: "Exit Mode", OK, and the printer will reboot with the default password (serial number).

Hopefully this will work for you too.