Night Owl AHD10 Series User Manual page 74

Error
There is no picture on selected
channels/camera picture Is not
being displayed.
The image on the DVR appears,
but does not have sound.
A "whirring" noise is coming
from the system.
The system beeps at startup.
74
Possible Causes
Camera cables are loose of have
become disconnected.
Audio cables are loose or have
been disconnected.
Audio channels are disable.
Volume on external speakers
(not included) is low or off.
Fan is active.
Solutions
1. Check the camera video
cable and connections.
2. Disconnect and reconnect the
cable at the system and at
the camera.
3. Try moving the camera to
another channel or use
another cable.
Check the AUDIO connection to
the DVR.
Left click in Live View to bring
up the Volume control and
ensure that the channel(s) are
not low or muted.
Increase volume on external
speakers (not included).
The noise means the exhaust
fan is working normal.
The beep at startup is normal.
AHD10 Series User's Manual