IBM 7947E3U, User Manual

Page: 37 / 170

DC power-supply LEDs
Description Action Notes IN OK OUT OK Error (!)
On On Off Normal operation
Off Off Off No dc power to the
server or a problem
with the dc power
source.
1. Check the dc power to the
server.
2. Make sure that the power
cord is connected to a
functioning power source.
3. Restart the server. If the error
remains, check the
power-supply LEDs.
4. Replace the power-supply.
This is a normal
condition when no dc
power is present.
Off Off On No dc power to the
server or a problem
with the dc power
source and the
power-supply had
detected an internal
problem.
v
Make sure that the power cord
is connected to a functioning
power source.
v
Replace the power supply
(see the documentation that
comes with the power supply
for instructions).
This happens only
when a second power
supply is providing
power to the server.
Off On Off Faulty
power-supply Replace the power supply.
Off On On Faulty
power-supply Replace the power supply.
On Off Off Power-supply not
fully seated, faulty
system board, or
faulty power-supply
1. (Trained service technician
only) Reseat the power
supply.
2. If a power channel error LED
on the system board is not lit,
replace the power-supply
(see the documentation that
comes with the power supply
for instructions).
3. If a power channel error LED
on the system board is lit,
(trained service technician
only) replace the system
board.
Typically indicates a
power-supply is not
fully seated.
On Off On Faulty
power-supply Replace the power supply.
On On On Power-supply is
faulty but still
operational Replace the power supply.
Server power features
When the server is connected to a power source but is not turned on, the operating
system does not run, and all core logic except for the integrated management
module (IMM) is shut down; however, the server can respond to requests from the
IMM, such as a remote request to turn on the server. The power-on LED flashes to
indicate that the server is connected to power but is not turned on.
Chapter 1. The System x3650 M2 server
21