Appendix A Troubleshooting, Daily Maintenance And Glossary - ADT DVR7800S-U Series User Manual

Appendix A Troubleshooting, Daily Maintenance and Glossary

Troubleshooting
1. DVR does not boot up properly
Possible reasons:
•
Input power is not correct
•
Power connection is not securely attached
•
Power switch button is damaged
•
Program upgrade version is wrong
•
HDD malfunction
•
Seagate DB35.1, DB35.2, SV35 or Maxtor 17-g has a compatibility problem —
Upgrade to the latest version to solve this problem.
•
Front Panel error
•
Main board is damaged
2. DVR often automatically shuts down or stops running
Possible reasons:
•
Input voltage is not stable or it is too low
•
HDD malfunction
•
Video signal is not stable
•
Working environment is too harsh; too much dust
•
Hardware malfunction
3. System cannot detect hard disk
Possible reasons:
•
HDD is damaged
•
HDD ribbon is damaged
•
HDD cable connection is loose
•
Main board SATA port is damaged
4. There is no video output whether it is the one-channel, multiple-channel or all-channel
output
Possible reasons:
•
Program is not compatible—upgrade to the latest version.
•
Brightness is set to 0. Restore factory default setup.
•
There is no video input signal or it is too weak
•
Check the Privacy Mask setup or your screen saver
•
DVR hardware malfunction
DVR7800S-U Series Hybrid DVR User Guide
Appendix A Troubleshooting,
Daily Maintenance and Glossary
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