Lenovo 6528 - Manual (Page 42)

Table 5. Power-supply LEDs
Power-supply LEDs
Description Action Notes AC DC Error
Off Off Off No ac power to
the server or a
problem with the
ac power source
1. Check the ac power to the server.
2. Make sure that the power cord is
connected to a functioning power
source.
3. Turn the server off and then turn the
server back on.
4. If the problem remains, replace the
power supply.
This is a normal
condition when no
ac power is present.
Off Off On No ac power to
the server or a
problem with the
ac power source
and the power
supply had
detected an
internal problem 1. Replace the power supply.
2. Make sure that the power cord is
connected to a functioning power
source.
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. Reseat the power supply.
2. If the system board error (fault) LED is
not lit, replace the power supply.
3. If the system board error (fault) LED is
lit, (Trained service technician only)
replace the system board.
Typically indicates
that a power supply
is not fully seated.
On Off or
Flashing
On Faulty power
supply Replace the power supply.
On On Off Normal operation
On On On Power supply is
faulty but still
operational Replace the power supply.
Server power features
When the server is connected to an ac power source but is not turned on, the
operating system does not run, and all core logic except for the service processor
(the integrated management module) is shut down; however, the server can
respond to requests to the service processor, such as a remote request to turn on
the server. The power-on LED flashes to indicate that the server is connected to ac
power but is not turned on.
Turning on the server
Approximately 5 seconds after the server is connected to ac power, one or more
fans might start running to provide cooling while the server is connected to power
and the power-on button LED flashes quickly. Approximately 1 to 3 minutes after
26 ThinkServer TS200 Types 6522, 6523, 6524, 6525, 6526, 6528, 6529, and 6530: Installation and User Guide