IBM System x3400 M3 Types 7378 Installation And User Manual page 34

Table 2. Power-supply LEDs
Power-supply LEDs
AC DC Error
Off Off Off
Off Off On
Off On Off
Off On On
On Off Off
On Off or On
Flashing
On On Off
On On On
Note: On models with eight 3.5-inch or sixteen 2.5-inch hard disk drives, need to
upgrade power supply to 920-watt.
The following illustration shows the 920-watt power-supply LEDs on the rear of the
server.
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IBM System x3400 M3 Types 7378 and 7379: Installation and User's Guide
Description Action
No AC power to
1. Check the AC power to the server.
the server or a
2. Make sure that the power cord is
problem with the
connected to a functioning power
AC power source
source.
3. Turn the server off and then turn the
server back on.
4. If the problem remains, replace the
power supply.
No AC power to
1. Replace the power supply.
the server or a
2. Make sure that the power cord is
problem with the
connected to a functioning power
AC power source
source.
and the power
supply had
detected an
internal problem
Faulty power Replace the power supply.
supply
Faulty power Replace the power supply.
supply
Power supply not
1. If the system board error (fault) LED is
fully seated,
not lit, replace the power supply.
faulty system
2. If the system board error (fault) LED is
board, or faulty
lit, (Trained service technician only)
power supply
replace the system board.
Faulty power Replace the power supply.
supply
Normal operation
Power supply is Replace the power supply.
faulty but still
operational
Notes
This is a normal
condition when no
AC power is
present.
This happens only
when a second
power supply is
providing power to
the server.
Typically indicates
that a power supply
is not fully seated.