IBM 7944, Инструкция по установке и эксплуатации

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See “System-board LEDs” on page 39 for the location of these LEDs.
Table 5. System pulse LEDs
LED
Description
Action
Enclosure management heartbeat Power-on and power-off sequencing.
1. If the LED blinks at 1Hz, it is
functioning properly and no
action is necessary.
2. If the LED is not blinking, (trained
service technician only) replace
the system board.
IMM heartbeat IMM heartbeat boot process. The following steps describe the
different stages of the IMM heartbeat
sequencing process.
1. When this LED is blinking fast
(approximately 4Hz), this
indicates, that the IMM code is in
the loading process.
2. When this LED goes off
momentarily, this indicates that
the IMM code has loaded
completely.
3. When this LED goes off
momentarily and then starts
blinking slowing (approximately
1Hz), this indicates that IMM is
fully operational. You can now
press the power-control button
to power-on the server.
4. If this LED does not blink within
30 seconds of connecting a
power source to the server,
complete the following steps:
a. (Trained service technician
only) use the IMM recovery
jumper to recover the
firmware (see
“System-board
switches and jumpers” on
page 36
).
b. (Trained service technician
only) replace the system
board.
Server power features
When the server is connected to a 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 from 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 a power source but is not turned on.
Turning on the server
Use this information to turn on the server.
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System x3550 M3Installation and User's Guide