LT Security LTD7726 - Manual (Page 45)

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5 FAQ
If your problem is not listed below, please call our technical dept. for more support.
1. Question: Why is DVR 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: Why is DVR rebooting automatically or stopped after starting the DVR
for several minutes?
Answer:
 Instability or low input voltage
 Bad track hard drive or the connection of hard drive is bad
 On-off power supply does not have enough power
 The front-end video signal instability
 High temperature, too dusty or bad operating environment.
 The main board is not well-connected with other add-on boards
 The hardware of DVR is defective
3. Question: How come there is no output of single channel, multi channel or all
channel video?
Answer:
 Please check the adaptor of camera 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 signal is too weak
 Display setting in the preview is set to closed
 The hardware of DVR is defective
4. Question: Why can’t the DVR 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
5. Question: What is the meaning of“R”“M”“I”“H” showed in interface?
Answer:
 “R”means the channel is recording
 “M” means the channel is on motion detection
 “I”means the channel is on alarm
 “H” means either no HDD, the HDD is bad or the HDD is full.
6. Question: DVR is having problem with real-time images such as bad image color
or serious brightness distortion. What may be the problem?
Answer:
 If PAL and NTSC is not correctly selected on the BNC output, the images will be
in black and white.
 DVR is not compatible with monitor
 The video transmission distance is too far