Hub Status Indicators - Allied Telesis AT-MR420TR Installation Manual

Centrecom multiport micro repeaters
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Installation
If there is no link light, there is no signal continuity.
Check that the attached Data Terminal Equipment (DTE) is ON and
that the proper cable is being used.
If this check does not identify the problem, it may indicate that a
repeater or the device connected to the port is faulty. Move the cable to
the adjacent ports to further isolate the problem to the repeater or to
the attached device. It may be necessary to change cables to isolate the
fault to a particular cable.

Hub Status Indicators

Three Hub status LEDs at the far right of the front panel indicate the
overall status of the repeater. Figure 7 shows the location of these
indicators.
Figure 7: Hub Status LEDs
12

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