Troubleshooting
51
5
3. If the problem persists, replace a hard disk drive.
GV-Tower DVR/NVR System suffers virus attack.
GV-Tower DVR/NVR System is designed and optimized for Windows 7 platform. It may be
vulnerable to newly created worms and exploits that attack any of the underlying operating
system’s previously undocumented flaws. If your GV-Tower DVR/NVR System suffers virus
attack, try restoring the operating system and GV-System Software by using the Recovery.
Refer to
3.12.1 Restoring System
.
GV-Tower DVR System has video and/or audio lost.
If your GV-Tower DVR System fails to show video, audio or both, try these steps:
1. Check the video/audio connection. Make sure one end of the LFH audio & video cable is
securely connected to the video/audio device, and the other end to the video/audio port of
the GV-Tower DVR System.
2. Make sure the video/audio device is turned on.
3. Switch the cable from the functional channel to the non-functional channel, and vice versa.
If the previously non-functional channel is now able to deliver video/audio, you should
check the video/audio device itself and its related cables.
The screen image appears distorted or jitters.
If the screen image seems to be distorted, jitter, or not to look right, try these steps:
1. Make sure the video standard in your country matches the setting in the GV-Tower
DVR/NVR System. Refer to
3.12.2 Changing Video Standard after Recovery.
2. Make sure the camera and its cable are not damaged or frayed. Try to replace a camera
or camera cable to see if this fixes the problem.
How can I find more help?
1. Visit our website at
http://www.geovision.com.tw/english/4_1.asp
2. Write us at