5 COMMON FAULTS
DVR startup failure or continuously reboots
Possible reasons:
1. The system has been damaged from a bad DVR update.
2. There is a problem with the DVR main board, please contact supplier.
3. There is a HDD error. Replace faulty HDD.
Remote control does not work
1. Check for batteries in the remote control.
2. Check batteries’ power level.
3. Check if remote receiver is obscured.
4. Check if the DVR’s address corresponds to the remote control address.
DVR cannot control the PTZ camera
Possible reasons:
1. RS-485 cable connection error, A, B ports are inversely connected;
2. PTZ decoder, protocol, baud rate, address are incorrect;
3. Parallelly connect a 120Ω resistor to resolve signal reflex caused by too many
PTZs on the line.
4. The RS-485 ports in the DVR are defective.
Blurred screen in preview mode
Possible reasons:
Please make sure your cameras match your video format selected in the General menu.
E.g. camera is NTSC standard but the DVR is PAL standard, the preview would be
blurred.
Blurred screen in playback mode or failure to playback records
Possible reasons:
1. Procedure error, reboot the DVR
2. HDD error, test or change out the HDD
3. DVR hardware failure, contact your local supplier
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