ESP DVR8iP - Troubleshooting

Troubleshooting
The DVR cannot boot up normally.
Possible reasons are as follows:
1 The power supply is not correctly connected.
2 The power supply is damaged
3 The hard disk is damaged.
4 The front panel is damaged.
5 The main board of the DVR is damaged.
The DVR reboots automatically or stops working after boot up a few minutes.
Possible reasons are as follows:
1 The input voltage is not stable or too low.
2 T
he hard disk is damaged.
3 The DVR is subject to poor environmental conditions . Heat , dust , moisture etc
4 The hardware of the DVR is damaged.
System cannot detect hard disk.
Possible reasons are as follows
1 The hard disk power supply line is not connected.
2 The cables of the hard disk are damaged.
3 The hard disk is damaged.
4 The SATA port of main board is damaged.
5 Hard disk cables not fully inserted
T
here are no video outputs in single channel, multiple channels and all channels.
Possible reasons are as follows
1 The image brightness is set to zero.
2 There is no video input signal or the signal is too weak.
3 The channel protection or the screen protection is set.
4 The hardware of the DVR is damaged
5 No cameras connected
6 No power to connected cameras
Real-time image problems such as the image color o
r the brightness distortion.
Possible reasons are as follows
1 The PAL / NTSC settings are not correct for region ( Pal to be used in Europe )
2 The signal from the camera is too weak due to excess distance between camera and DVR.
3 The color and brightness setting of the DVR is wrong.
I cannot find the video files in local playback mode.
Possible reasons are as followed:
1 The data line of the hard disk i
s damaged
2 Recording did not take place in the specified time range.
3 The hard disk is damaged.
4 The video files to look up are covered.
5 The recording is not on.
6 Harddrive has been overwritten
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