Gewiss Chorus Digital Vision, Техническое руководство

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Chorus Digital Vision - Technical System Manual
81
TROUBLESHOOTING
Possible problems with the relay unit
Both red LEDs (power supply and PoL) are switched off The module is not powered. Check that:
1. the power supply unit is switched on (if the module is also
directly connected to such a unit);
2. the LAN connection to the relay unit is working, the switch is
powered, and the PoL ports are enabled.
The green LED of the LAN/PoL port does not flash There is no communication with the rest of the system: check the
LAN connection cable.
The device, when connected to an output, does not work Check the green LED of the output is switched on (output re-
lay = ON): if the LED is on, check the connection between the relay
unit and the device.
All the green output LEDs flash There is no connection with the primary front door unit.
Possible problems with the camera interface
Both red LEDs (power supply and PoL) are switched off The module is not powered. Check that:
1. the power supply unit is switched on (if the module is also
directly connected to such a unit);
2. the LAN connection to the switch is working, the switch is
powered, and the PoL ports are enabled.
The green LED of the LAN/PoL port does not flash There is no communication with the rest of the system: check the
LAN connection cable.
The green LED of the telecamera is switched off There is no video input signal (the telecamera is absent, badly
connected, or not powered).
The green LED of the telecamera flashes The telecamera is enabled via the DIP switch.
All the green LEDs of the telecameras are flashing There is no connection with the primary front door unit.
Possible problems with the LAN cable
The problems that may arise with the LAN cable fall into three categories:
t
interrupted cable
t
false contacts
t
crimping error.
To check a LAN cable that is not working correctly, use the special tool (for example GW 38 052); move the connector and the cable cou-
pling. ATTENTION: the connectors and couplings at both ends of the cable must be moved.
On the basis of what you see, you can identify the reason for the malfunctioning and then attempt to resolve the problem.
Some wires of the LAN cable are interrupted (the tool indicates the
lack of galvanic continuity) The cable is interrupted, or some wires have not been correctly
crimped. Try replacing the connectors one at a time (crimping
them again), then recheck the cable. If the problem persists, this
means the interruption is on the cable: replace it.
When the connector is moved, the tool indicates a lack of contact There is a false contact. Replace the connector (crimping it again).
The tool indicates that the pinout of the connectors is incorrect For LAN standard cables only: replace the connectors at both ends
of the LAN cable (crimping them again).
Attention: the special non-direct cable, used for single-family
units, indicates an incorrect pinout in any case.