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H.264 4/8/16-channel Networkable DVRs
APPENDIX B
Troubleshooting
This basic troubleshooting guide will help you identify general malfunctions and oer steps for a quick resolution. If the failure or
malfunction can’t be solved by following these steps, please contact your distributor.
$ DVR does not power up.
• Check the power switch.
• Check the power adaptor input connection.
• Check the power source. Is it providing about 120 Vac?
• Check the power On/O switch.
$ The DVR reboots or stops, then restarts after several minutes.
Check for the following problems:
• Unstable or low input voltage.
• The hard disk drive is bad.
• Power adapter is defective.
• Environmental factors such as temperature, dust, humidity, etc. are aecting the DVR stability.
• The DVR internal connectors are loose.
• The DVR hardware is defective.
$ The DVR crashes during recording or while watching recorded information.
• Check to see if there are any problems with the hard disk. If one of your hard disks has failed or malfunctioned, replace it and
try again.
$ Updating fails.
• Verify that the DVR is able to recognize the USB storage device. not able to recognize the USB storage device. Test more than
one USB storage device to ensure compatibility.
• Updating may fail if the USB port is doesn’t work well due to voltage uctuation.
$ Mouse doesn’t work.
• A mouse of a dierent brand may not work with your DVR. Use the one provided with the system. Wireless mice do not work
with your DVR.
APPENDIX B: TROUBLESHOOTING
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