The Swift DT10C (3MG) Counterfeit Detector automatically performs a self-test every time you turn On the device. If one of the C-codes is flashing on the display, please proceed with the following steps:
Step 1: Please ensure the sensors are not covered by any object, stuck banknotes, or even accumulated dust. Use a dry cloth to remove the dust (or ink residue from bills) that might have accumulated over time, especially the Magnetic Heads C12, C13, and C14.
Step 2: If this doesn’t help resolve the issue, please try and calibrate the device if you experience C1, C4-C17 error codes. Please do not perform a calibration if you experience C2 or C3 (this can be easily resolved by cleaning the feeding sensors with a dry cloth).
Calibration Article - https://deteckusa.reamaze.com/articles/dt10c-white-paper-calibration-3mg
If the above troubleshooting steps did not help solve the issue, please reach out to support@deteckusa.com and share the C-Error Code, Calibration Error Code, and Device Serial Number located on the back of the machine.
We might need to activate the warranty and help repair the sensors or replace the device.