Interpreting
power
supply
LEDs
The
following
table
describes
how
to
interpret
the
power
supply
LEDs.
Table
10.
Power
supply
LED
interpretation
Fault
condition
Description
LEDs
PSU
status
normal
AC
missing
for
this
PSU
Fan
fault
Output
voltage,
current,
temperature
fault
N
Normal
operation
On
Off
Off
Off
1
Power
supply
failure
Off
Off
Off
On
2
Fan
failure
Off
Off
On
Off
3
No
power
to
this
PSU
Off
On
Off
On
Monitoring
the
Fibre
Channel
disk
The
N3700
storage
system
Fibre
Channel
disk
has
two
LEDs.
The
LEDs
indicate
whether
the
disk
is
functioning
normally
or
whether
there
are
problems
with
the
hardware.
Location
of
LEDs
shows
the
location
of
the
Fibre
Channel
disk
LEDs.
PSU status normal
Power
Fan LED
AC LED
Figure
6.
Power
supply
LED
location
22
IBM
System
Storage
N
series:
N3700
Hardware
and
Service
Guide
Summary of Contents for System Storage N3700
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