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System-Board Leds - IBM 7945G2U Installation And User Manual

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System-board LEDs

The following illustration shows the light-emitting diodes (LEDs) on the system
board.
Note: Error LEDs remain lit only while the server is connected to power.
System pulse LEDs
The following LEDs are on the system board and monitor the system power-on and
power-off sequencing and boot progress (see "System-board LEDs" for the location
of these LEDs).
Table 6. System-pulse LEDs
LED
Enclosure manager heartbeat Indicates the status of
Description
power-on and power-off
sequencing.
When the server is
connected to power, this LED
flashes slowly to indicate that
the enclosure manager is
working correctly.
Chapter 2. Installing optional devices
Action
(Trained service technician
only) If the server is
connected to power and the
LED is not flashing, replace
the system board.
33

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