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| Chapter 8 |
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| Troubleshooting |
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| Problem | Solution |
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| DVR fails to start after being | Make sure the power switch on the DVR is turned on and that |
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| connected to the power supply | there is sufficient power. |
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| Make sure the |
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| Make sure the power supply has sufficient power to operate the |
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| hard disks. |
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| DVR restarts repeatedly | Disconnect all cameras and network connections, and start the |
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| DVR. If this doesn't solve the problem, remove the cover and take |
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| out the hard drive. A corrupted or damaged hard drive may cause |
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| repeated reboots. |
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| DVR crashed when recording | Check for problems with the HDD. If one of the hard disks has |
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| or playing recorded information | failed or malfunctioned, replace it and try again. |
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| Make sure the DVR is able to recognize the USB storage device. |
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| Updating operation fails | Test more than one USB storage device to ensure compatibility. |
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| Contact qualified technician to check for line voltage fluctuations. |
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| Mouse does not work | Use the mouse provided with the DVR or try other mice to find |
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| one that works. Wireless mice do not work with the DVR. |
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| Recording function does not | Make sure HDD connections are correct. |
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| Make sure HDD is formatted. |
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| work properly |
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| Make sure the menu settings are correct. |
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| Make sure the video input, DVR, and monitor systems are |
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| Image on the monitor appears | compatible, i.e. all NTSC or PAL. |
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| in black and white rather than | At night time, most video appears black/white. If you find |
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| color | incompatibility or inconsistency, set the monitor option to the |
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| automatic identification state. |
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| Nothing displayed on the | Make sure the monitor power supply is on and the brightness is at |
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| its lowest condition. |
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| monitor | Make sure the video cable is properly connected. |
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| Check for interference (e.g., power lines, cell phones, |
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| microwaves). |
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| Image isn't clear | Make sure the video cable is not damaged and the connections are |
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| good. |
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| Check the condition of the camera, monitor, and circuits for any |
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| signs of damage or deterioration. |
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96
