38
Before asking for repairs, check the symptoms with the following table.
Contact your dealer if a problem cannot be solved even after checking and trying the solution in the
table or a problem is not described below.
Symptom
Cause/solution
Reference
pages
Power is not turned on.
When using DC power supply
• Is 12 V DC power supply connected to the 2P
power supply cable?
→
Check whether the connection is appro-
priately established.
• Is the AC adapter in use compliant with the
Specifications?
→
Check the Specifications regarding AC
adapter.
When using a PoE device for power supply
• Are the PoE device and the network cable of
the camera connected using a LAN cable?
→
Check whether the connection is appro-
priately established.
• Depending on the PoE device, the power sup
-
ply will stop when the demanded power
exceeds its total power limit for all PoE ports.
→
Refer to the operating instructions of the
PoE device in use.
• When connecting both of the 12 V DC power
supply and the PoE device for power supply,
the network connection may not be
established.
Turn down the power supply from the PoE
device.
20-22
Audio input contains
noise.
• Check the following.
• Grounding of the camera, a switching hub or
peripheral devices are not done.
• The camera is used near an electrical power
line.
• The camera is used near a device which pro
-
duces strong magnetic field or radio waves
(such as near a TV/radio antenna, a motor of
an air conditioning system, a transformer, etc.)
When audio input still contains noise even after
checking the above possibilities, use a pow-
ered microphone or connect audio output with
low output impedance.
15
Troubleshooting