Need to find code

Yes go to service mode and clear the counter. The counter is set up to replace the drum and developer.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

question too vague.
make? model?
example:
Re: Konika Minolta BizHub 163 - Error Code? M2
• To display the count of the supplies life counter.
When the counter reaches "0", life 1 will be detected and maintenance call M2 will appear.
The initial value is 40,000, and the countdown system is used.
Use Setting/Procedure
• To clear the count, use [CLEAR DATA] of the Service Mode.

2978,2940,2991. Try these codes. If you wish to get more details; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. Common set-up codes to check with TVs and other devices are given, in the order of the "device's brand name list" in alphabetical order. Pull up older posts. Surf the site with patience. Surf the sites by type in the brand name to your set, in its search box.
http://electronicshelponline.blogspot.com/
http://remotesearch.blogspot.com/
http://electro-medical.blogspot.com/
http://electrohelponline.blogspot.com/

You need to go into the service mode and then reset the supplies life counter.

please replace your image transfer belt unit

(konika minolta c350)

I Have a Konika Minolta bizhub 211. I had been trying this solution for repairing m2 call. but the code is appear till now. anyone help me. please give me solution step by step.
Thanks

was told this message meant Konica have disabled the machine remotely.

The C0016 code means that the Black Imagine Unit's Motor is not turning. So you will need to check all the connections and connectors on the black imaging unit and try re-installing. You could replace it if you have a spare.
The 31C-M code is not in my service manual and I have never seen that code before.

CAUSE: LD Power becomes saturated when performing Auto Gamma adjustment in a low humidity condition.

SOLUTION: Perform the following adjustment:
1. [Utility].
2. [Machine Admin. Setting].
3. [System Setting].
4. [Expert Adjustment].
5. [Process Adjustment].
6. [Toner Quantity / Exposure].
7. Select the proper Exposure Adjustment [Yellow, Magenta, Cyan, or Black] by using the Next/Previous button.
8. Select Standard then select [-2] under Exposure.
9. Press OK.
Notes:
a. If the problem persists, replace the problem color drum since the cause of the SC is the combination of drum characteristic and humidity.
b. The following codes = colors: C-2831 = Yellow; C-2832 = Magenta; C-2833 = Cyan; C-2834 = Black.

DECIDED TO DONATE THE TV TO GOODWILL.