38
Operation Manual of Intelligent High Speed Dome Camera
Chapter Seven Trouble Shooting of Dome Device
S.N.
Problem
Description
Possible Reason
Troubleshooting
Remarks
1
After power on, no
motion and no
image.
Power cable is connected
improperly.
Check if the power cable is connected
to power of AC24V
Please follow the above
basic system wiring strictly
Fault of power PCB of dome
device
Change the power PCB
slip ring power wires
disconnected
Change slip ring
Fault of main control board
Change main control board
2
After power on, the
dome device rotate
normally, but no
character nor image
display
Character monitor switch is off
Switch on the character monitor
according to the menu instruction
About 45 seconds after the
dome device is power on.
Improper connection between
camera and dome device
Replace a FFC cable or a camera
3
After self-test of
the dome device,
menu cannot be
displayed
Wrong operation
CALL+90+ENTER open
After self-test, the menu
can only be displayed
when there is image
display of the dome device
Fault of OSD control board
Change OSD board
4
Distorted character
or image
Interfered by exterior electronic
signal (noise) or the camera is
directed to the monitor screen
Grounding the dome device or shut off
the surrounding big electronic
devices(electric, HF, signal generating)
equipment, or rotate the camera
Shielded cable should be
adopted for video cable
System wrong function
Restart the dome device
5
After power on, no
self-test and motor
is locked
The system setting is start
self-test after receiving
command and you can see the
video on the screen
Connect the controller and set correct
transmission protocol and baud rate as
well as dome device address
There is character display
in normal circumstance
6
Cannot stop pan
rotation
(rotate and
stop alternatively)
OSD board is not properly
connected with main control
board or the photoelectric
switch is broken
Fix OSD board again, if the problem
still exits, then replace the OSD board
Pan interrupter should be
at 2/3 of the central slot
within photoelectric switch
Pan interrupter is not in due
position
Adjust the pan interrupter
7
After normal
working, it will
rotate one circle
when being
controlled
The system is checking the data
again
It is normal event
If this happens frequently,
please adjust the pan
interrupter or check if the
connection is too tight.
