User's Manual

9-6 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10
620003-0 Rev. B
No communica-
tion with EHn
and
LINK
Red Downlink fiber
has high optical
loss.
Measure downlink optical fiber loss.
Clean the Expansion Hub’s downlink
fiber port.
(Refer to Section 9.2.)
Clean the Main Hub’s downlink fiber
port.
(Refer to Section 9.2.)
EHn and/or
RAU
degraded per-
formance, or
EHn and con-
nected RAUs
are off-line.
E-HUB/RAU
Off
Uplink fiber has
high optical loss.
Measure uplink optical fiber loss.
Clean uplink fiber connectors.
(Refer to Section 9.2.)
Clean uplink fiber ports.
(Refer to Section 9.2.)
Main Hub down-
link port failure.
Move the Main Hub fiber pair to
another port. If fault is not reported,
fiber is okay and the Main Hub port
is bad. Use AdminManager’s “Clear
All Disconnect Status” command to
clear the disconnect fault on the orig-
inal port.
Main Hub inter-
nal failure.
If more than one Expansion Hub con-
nected to the same Main Hub reports
this failure, replace the Main Hub.
Expansion Hub
downlink port
failure.
Swap suspect Expansion Hub with
working Expansion Hub. If fault per-
sists, replace the Main Hub; other-
wise, replace the Expansion Hub.
Table 9-1 Faults Reported by the Main Hub (continued)
Fault
Message &
Icon LED State
Possible
Causes Action Impact