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4.1. TROUBLESHOOTING PROCEDURES
4.1.1. TROUBLESHOOTING PROCEDURES
Troubleshooting procedures are listed in table below.
PROBLEM
POSSIBLE
REASONS
SOLUTION
Thermal
speed dome
have no
action and
there is no
picture in
monitor after
power is on.
1. The end of 24V
AC power supply
didn’t connect with
speed dome in right
way.
2. Power failure or
transformer break-
down.
1. Check whether thermal speed
dome connect to 24V AC power
supply. Make sure that the well
connection between speed dome
and 24V AC power supply.
2. Check whether the power supply
is in working order and whether 24V
AC transformer work normally.
After self
testing,
keyboard
can’t control
Thermal
speed dome.
1. IP address Switch
of speed dome set
incorrectly.
2. Reverse connec-
tion and open circuit
of RS485 control
bus.
3. RS485 control
bus breakdown.
1. Reset DIP switches according to
DIP switch setting table.
And make sure that the IP address
speed dome is the same with that
of keyboard.
2. Check connection of RS485
control bus, guarantee well and
correct connection.
3. Refer to common sense of
RS485 control bus.
Fan
don’t work.
1. Poor fan connec-
tion.
2. Ambient tempera-
ture is below 10°C
1. Make sure the well connection. If
fan don’t work when connection is
well, please contact supplier.
2. Make sure that thermal speed
dome work in proper temperature.
The picture
is fuzzy.
1. Thermal speed
dome is in the
manual focus status.
2. Transparent lower
dome is not clean.
1. Change the manual focus status
to auto focus status.
2. Clean transparent lower dome.
28


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