LT Security LTD7726 CD - Manual (Page 46)

5.FAQ
If your problem is not listed below, please call our toll-free number for more support.
1. Question: DVR is not working after starting？
Answer:
— Check the adaptor input
— Check the on-off power line, is it well-connected?
— Check the power on-off
— Check the upgrade procedure
— Check the main board of DVR
2. Question: DVR is rebooting automatically or stopped after starting the DVR for
several minutes?
Answer:
— Instability or low input voltage
— Bad track hard drive or the line of hard drive is bad
— On-off power supply is not enough
— The front-end video signal instability
— High temperature, too much dust, too bad the DVR operating environment
— The main board is not well-connected with other boards
— The hardware of DVR is defective
3. Question: No output of single channel, multi channel or all channel video?
Answer:
— Please check the adaptor of camera whether to see if it is well-connected
— Please check the cable for connecting video input/output in the back panel of
DVR
— Please insert the video source directly into the display device and check If they
are causing the problem.
— Check the brightness of the picture and bring it back to its original default
setting
— No video input signal or too weak
— Display settings in the preview set to be closed
— The hardware of DVR is defective
4. Question: DVR cannot record after startup and the interface is showing "H"
Answer:
— Make sure power adaptor is DC 19V
— Make sure HDD is formatted
— Check the power and data connection cables of the HDD
— The HDD is defective
— The SATA port is not working
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