
66
Operating Manual
RX4770 M4
Starting up and operation
©
c
o
gn
itas
. G
es
el
ls
ch
ft
fü
r T
ec
hn
ik
-Do
ku
m
en
tat
io
n
m
bH
2
017
P
fad:
W:
\A
pp
Da
ta
\L
o
ca
l\F
CT
\t
im
_l
oc
al
\w
ork
\P
IC
H
O
L\
OB
J_
D
O
K
U
-31
71
8-0
01
.fm
6.1.3
Indicators of the hot-plug system fans
A fan status indicator (LED on the system board) is assigned to each system
fan. The status indicators are not visible unless the housing is open. The
respective LED is set with commands in Server Management.
3
!
Exclamation
mark
off
The PSU is operating properly.
orange on
A PSU failure has been detected. Possible
causes:
– Over/under voltage
– Overheating
– Fan failure
– PSU failure
– Overload
LED Meaning
lights orange
Possible fan failure (rotation speed less than 70% of the
original speed) or fan failure
Pos. Indicator
Status
Description