Chapter 5 faq and maintenance – ELRO FA420DVR 4-ch digital recorder + 500 gb hard disc USERS MANUAL User Manual
Page 65
Page 65
Chapter 5 FAQ and Maintenance
5.1 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.
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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
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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
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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