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• DVR color or brightness setup is not correct.
6. Can not search local records.
There are following possibilities:
• HDD ribbon is damaged.
• HDD is broken.
• Upgraded program is not compatible.
• The recorded file has been overwritten.
• Record function has been disabled.
7. Video is distorted when searching local records.
There are following possibilities:
• Video quality setup is too low.
• Program read error, bit data is too small. There is mosaic in the full screen. Please
restart the DVR to solve this problem.
• HDD data ribbon error.
• HDD malfunction.
• DVR hardware malfunctions.
8. There is no audio when monitor.
There are following possibilities:
• It is not a power picker.
• It is not a power acoustics.
• Audio cable is damaged.
• DVR hardware malfunctions.
9. There is audio when monitor but there is no audio when system playback.
There are following possibilities:
• Setup is not correct. Please enable audio function
• Corresponding channel has no video input. Playback is not continuous when the screen
is blue.
10. Time display is not correct.
There are following possibilities:
• Setup is not correct
• Battery contact is not correct or voltage is too low.
• Crystal is broken.
11. DVR can not control PTZ.
There are following possibilities:
• Front panel PTZ error
• PTZ decoder setup, connection or installation is not correct.
• Cable connection is not correct.
• PTZ setup is not correct.
• PTZ decoder and DVR protocol is not compatible.