
Chapter 8 Powering Up/Down
Installation and Commissioning Manual
287
F
S
P
3000R
7 R
11
.1 8000
0015930
Issue
B
, ©
2012
ADVA AG Optical Netw
orking
ADVA Conf
idential
Power Problems
•
If the LED indicator of the PSU is off: no power is available. Attach the
power cable. Ensure, that the correct voltage is applied.
•
If the LED indicator of the PSU is yellow: power supply overload.
o
Pull modules out of their back connector until the LED changes to
green. The last module pulled should be defective.
o
If the power supply LED remains yellow after the last module has been
pulled: Replace power supply or shelf.
o
If the error has been found: Replace the defective module and seat all
modules again.
•
If the LED indicator of the PSU is red: This power supply has no mains
input. Only the other power supply provides power to the shelf. Provide
power to the power supply.