User Service Guide, Fourth Edition - Server Expansion Unit

Chapter 4
Troubleshooting
Common Installation Problems
24
Server Expansion Unit LED Indicators
The Server Expansion Unit has LEDs that indicate system health. This section defines those LEDs.
Front Panel LEDs
There are seven LEDs located on the front panel.
Figure 4-1 Front Panel with LED Indicators
Table 4-1 Front Panel LEDs
LED Driven By State Description
Power
GPM
a
a. GPM stands for global power monitor.
On Green 48V good (LED works even if MP is not installed, or
installed and not active)
Off 48V Off
Standby Power GPM On Green 3.3V standby good (LED works even if MP is not
installed, or installed and is not active)
Off 3.3V standby off
MP Present GPM On Green At least one MP is installed and active
Off No MPs are installed or at least one is installed but
not active
Remote MP via GPM On Green Dial-in (remote) console enabled
Off Dial-in (remote) console is disabled, or MP not
installed, or MP installed and not active
Attention MP via GPM Flash Yellow Chassis log alert unread
Off No alert, or MP not installed, or MP installed and
not active
Run
PDC
b
/MP
c
via GPM
b. PDC stands for processor dependent code.
c. MP stands for manageability processor.
On Green One or more partitions running
Off No partition running, or MP not installed, or MP
installed and not active
Fault PDC/MP via
GPM
Flash Red One or more partitions have reported a fault
Off No partitions running, or MP not installed, or MP
installed and not active
RUN
Fault
Attention Remote
MP Present
Standby Power
Power
Power
Switch