User's Manual

8-6 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10
620003-0 Rev. B
Checking the Main Hub’s LEDs
• The LEDs should blink through a 5-second test on power up.
• If the LEDs do not blink on power up, replace the Main Hub.
• If the LEDs do not illuminate at all, make sure the AC power cable is con-
nected.
• If the LEDs blink continuously, there is no band programmed in the Main Hub
and there is no communication with connected Expansion Hubs or their RAUs.
• For each fiber optic port that has a connected Expansion Hub, which has been pro-
grammed with a band:
•The
LINK LED should be green.
•The
E-HUB/RAU LED should be green indicating that all downstream units are
functioning
• Refer to Section 9.3, “Troubleshooting,” on page 9-3 for more LED states.
NOTE: If there is communication between the Main Hub and the Expansion Hubs,
use the AdminManager software’s Configuration & Maintenance panel to isolate sys-
tem problems.