Samsung SNK-D85121BF User Manual page 54

Appendix
usage Maintenance
1. To shut down NVR, please firstly shut down the system and then turn off the power. Do not turn off the power directly or
HDD data will be lost or damaged.
2. Please keep NVR away from heat sources or places.
3. Clean the internal dust regularly. Make sure the good ventilation of NVR so as to ensure the good heat dissipation.
4. Please do not hot plugging cables at ports, or the ports may be damaged.
5. Please check the HDD cable and data cable regularly to see if they are ageing.
6. Please prevent the audio and video signals of NVR from being intervened by other electronic devices, and prevent the HDD
from being damaged by static electricity and induced voltage.
7. If the network cable is frequently plugged, it is suggested to replace connecting line regularly, or the input signal may be
unstable.
This is A class product.it maybe bring wireless interference in life. Under this situation, it need user to make measures.
54_ Appendix