IBM 7945G2U, Installation And User Manual

Page: 50 / 194

Table 6. System-pulse LEDs (continued)
LED Description Action
IMM heartbeat 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.
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 3 on page 30).
2. (Trained service
technician only) Replace
the system board.
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