Chapter 6 FAQ and Maintenance
6.1 FAQ
If you encounter a problem not listed below, please contact your local customer service or call our
headquarters for assistance. We are more than happy to assist.
1
Q: DVR will not start after power-on
A: Possible cause:
1 Input power is not correct
2 Switching power supply has bad wire connection
3 Switching power supply is damaged
4 Upgrade error
5 Damaged hard drive or hard drive cable
6 Front panel failure
7 DVR motherboard failure
2
Q: DVR restarts automatically few minutes after being turned on or freezes frequently
A: Possible cause:
1 Input voltage unstable or too low
2 Hard drive has bad tracks or damaged cable
3 Switching power supply has insufficient power
4 Front-end video signal is unstable
5 Poor ventilation; excessive dust; poor operating ambience
6 DVR hardware failure
3
Q: Hard drive not detected after startup
A: Possible cause:
1 Hard drive cable is not connected
2 Hard drive cable is damaged
3 Hard drive is damaged
4 Bad motherboard SATA port
4
Q: No video output on one or more channels
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