Unison Component Installation Procedures
7-16
InterReach Unison Installation, Operation, and Reference Manual
CONFIDENTIAL
D-620003-0-20 Rev J
Powering On the Main Hub
1.
Connect the AC power cord to the Main Hub.
2.
Plug the power cord into an AC power outlet.
3.
Turn on the power to the Main Hub and check that all the LED lamps are func-
tioning properly.
Upon power-up, the LEDs blinks for five seconds as a visual check that they are
functioning. After the five-second test:
LED states during power on will vary, depending on whether Expansion Hubs are
connected. Refer to Table 7-5 for possible combinations.
Table 7-5
Troubleshooting Main Hub LEDs During Installation
During
Installation
Power On
LED
State
Action
Impact
1.
Main Hub
power is
On with no
Expansion
Hubs con-
nected.
POWER
Off
Check AC power; check that the Main Hub power-on
switch is on; replace the Main Hub
The Main Hub is not
powering on.
POWER
Red
Replace the Main Hub
The power supply is
out-of-specification.
LINK
LEDs are on
but they
didn’t blink
through all
states
Replace the Main Hub.
The micro controller is
not resetting properly;
flash memory cor-
rupted.
E-HUB/RAU
LINK
Red
The port is unusable; replace the Main Hub when
possible.
Fiber sensor fault, do
not use the port.
E-HUB/RAU
Off
