88 MDS iNET 900 User’s Guide MDS 05-2806A01, Rev. A
4.1.1 Interpreting the LEDs
An important set of troubleshooting tools are the LED status indicators.
They should be the first thing to check whenever a problem is suspected.
Table 3-2 on Page 83 describes the function of each status LED.
Table 4-1 below provides suggestions for resolving common system
difficulties using the LEDs, and Table 4-2 other simple techniques.
Table 4-1. Troubleshooting Using LEDs
Symptom Problem/Recommended System Checks
PWR LED does not
turn on.
a. Voltage too low—Check for the proper supply voltage at
the power connector. (10.5–30 Vdc)
b. Cycle the power and wait (≈ 30 seconds) for the unit to
reboot.
LINK LED does not
turn on.
a. Network Name of Remote not identical to desired Access
Point—Verify that the system has a unique Network Name.
b. Not yet associated with an Access Point with the same
Network Name.
Check the “Status” of the unit’s process of associating with
the Access Point. Use the iNET Management System.
c. Poor Antenna System—Check the antenna, feedline and
connectors. Reflected power should be less than 10% of
the forward power reading (SWR 2:1 or lower).
PWR LED is
blinking.
a. Blinking indicates the presence of an alarm condition.
Verify the Error Log and correct the problem.
(See “LOGGED OPERATIONAL EVENTS” on Page 72)
LAN LED does not
turn on.
a. Verify the Ethernet cable is connect at both ends.
b. Verify that the appropriate type of Ethernet cable is used:
straight-through, or crossover.
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