User's Manual

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620003-0 Rev. B
EHn uplink
AGC failure
STATUS
Red Uplink fiber has
high optical loss.
Measure UL optical fiber loss.
Clean the Main and Expansion Hub’s
uplink fiber ports. (Refer to
Section 9.2.)
EHn
degraded
uplink per-
formance; or
EHn and con-
nected RAUs
are off-line.
Main Hub uplink
port failure.
Move fiber pair to another port. If
fault is not reported, fiber is okay and
Main Hub port is dirty or bad. Use
AdminManager to ‘Clear All Discon-
nect Status’ to clear the disconnect
fault on the original 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
internal failure.
Swap suspect Expansion Hub with
working Expansion Hub. If fault per-
sists, replace Main Hub; otherwise,
replace the Expansion Hub.
Expansion Hub Faults
EHn discon-
nected
and
LINK
Red The Expansion
Hub was con-
nected and is
now discon-
nected.
If EHn is disconnected, reconnect it
or clear the disconnect fault using
AdminManager’s “Clear All Discon-
nect Status” command.
EHn and con-
nected RAUs
are off-line.
E-HUB/RAU
Off
The uplink fiber
optical loss
exceeds mini-
mum threshold.
Check the uplink fiber cable’s optical
loss.
Clean the uplink fiber connectors.
(Refer to Section 9.2.)
Clean the Main and Expansion Hubs’
uplink ports.
(Refer to Section 9.2.)
Expansion Hub
uplink laser fail-
ure.
Check that EHn’s uplink laser is
operational. (
UL STATUS LED is
green.)
Power cycle the Expansion Hub and
confirm the
UL STATUS LED is
green for 60–90 seconds after power
up.
Main Hub uplink
port failure
Move fiber pair to another port. If
fault persists, there is a problem with
the Expansion Hub. Otherwise, the
Main Hub port is bad.
Table 9-1 Faults Reported by the Main Hub (continued)
Fault
Message &
Icon LED State
Possible
Causes Action Impact