System Pulse Leds; System-Board Optional Device Connectors - IBM x3650 M3 Installation And User Manual

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" on page 33
for the location of these LEDs).

System-board optional device connectors

The following illustration shows the connectors on the system board for
user-installable options.
34
System x3650 M3 Types 4255, 7945, and 7949: Installation and User's Guide
Table 8. System-pulse LEDs
LED
Enclosure manager heartbeat
IMM heartbeat
Description
Indicates the status of
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.
Indicates the status of the
boot process of the IMM.
When the server is connected
to power this LED flashes
quickly to indicate that the
IMM code is loading. When
the loading is complete, the
LED stops flashing briefly
and then flashes slowly to
indicate that the IMM if fully
operational and you can
press the power-control
button to start the server.
Action
(Trained service technician
only) If the server is
connected to power and the
LED is not flashing, replace
the system board.
If the LED does not begin
flashing within 30 seconds of
when the server is connected
to power, complete the
following steps:
1. (Trained service
technician only) Use the
IMM recovery jumper to
recover the firmware (see
Table 5 on page 30).
2. (Trained service
technician only) Replace
the system board.