Why does the scan light not appear after I press the PDA button？

There are two reasons for this problem

1) The scanning process is stuck

Please restore the scan head, after restoration, the scanning app will restart to solve the stuck problem

1. Go to Scanner App

2.Tap Settings > Reset Configuration

3. Waiting for Reset

4. Press the scan again when finished to test

Figure 2- 3 Reset Configuration

2）Scanning head damaged

Please contact the technical team for support.