Dahua Mobile DVR Series - Troubleshooting Network and USB Backup; Troubleshooting Remote Control and Storage; Troubleshooting Mobile Connectivity

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 DVR local video output quality is not good.
13. Network connection is not stable.
There are following possibilities:
 Network is not stable.
 IP address conflict.
 MAC address conflict.
 PC or DVR network card is not good.
14. USB backup error.
There are following possibilities:
 Burner and DVR are in the same data cable.
 System uses too much CPU resources. Please stop record first and then begin backup.
 Data amount exceeds backup device capacity. It may result in burner error.
 Backup device is not compatible.
 Backup device is damaged.
15. Alarm function is null.
There are following possibilities:
 Alarm setup is not correct.
 Alarm cable connection is not correct.
 Alarm input signal is not correct.
 There are two loops connect to one alarm device.
16. Remote control does not work.
There are following possibilities:
 Remote control address is not correct.
 Distance is too far or control angle is too small.
 Remote control battery power is low.
 Remote control is damaged or DVR front panel is damaged.
17. Record storage period is not enough.
There are following possibilities:
 Camera quality is too low. Lens is dirty. Camera is installed against the light. Camera
aperture setup is not correct.
 HDD capacity is not enough.
 HDD is damaged.
18. Cannot detect SIM card
There are following possibilities:
 There is no SIM card.
 SIM card direction is wrong.
 SIM card is malfunction.
19. My cell phone 3G/4G dial failed.