Q-Connect KF 14926 Manuel D'utilisation page 16

10. Once the software has updated correctly, restart the machine.
Troubleshooting
Self test error code display
The detector automatically performs a self test after power on. If one of the following error
messages is displayed on the display window, usually it is because the sensor is blocked by
banknotes or dust. Please use a brush or a piece of soft cloth to clean the dust on the sensor
or remove the banknotes, and then restart the machine.
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Figure 4
Figure 5
Figure 6