VDH-CK800 Hardware Manual
9
Q 3.
HDD not found after power-on
A : The possible causes:
1. No power for the Hard Drive
2. Hard Drive cable error
3. Hard Disk error
4. Main board SATA slot error
Q 4.
No output: Single, multiple or all channels
A : The possible causes:
1. Wrong firmware: Update to the right firmware
2. Brightness set to 0: set it to the default value
3. No signal input or signal too weak
4. Mask used
5. DVR hardware error
Q 5.
Live video problems: Such as bad colors, brightness error, image blink…
A : The possible causes:
1. When using BNC as output, wrong NTSC/PAL matching will result in
B/W image.
2. Impedance mismatch between digital video recorder and monitor.
3. Video transmission distance is too far or video transmission line
attenuation is too much.
4. Wrong settings of colors, brightness in the DVR
Q 6.
No recorded file in local side
A : The possible causes:
1. Wrong data cable or jumper error in the hard disk
2. Hard Disk error
3. Upgraded firmware cannot recognize the existing file system
4. Desired files are overwritten
5. Recording not enabled
Q 7.
Bad image when playback
