Lenovo System x3250 M4, Инструкция по установке и обслуживанию

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Table 13. Power-supply LEDs (continued)
AC Power-supply LEDs
AC DC Error Description Action Notes
On Off Off Faulty system
board or faulty
power supply 1. Turn off the server and disconnect
the power cord from the server; then,
reconnect the power cord.
2. If the system board error (fault) LED is
not lit, replace the power supply.
3. (Trained technician only) If the system
board error LED is lit, replace the
system board.
Typically indicates
that a power supply
is not fully seated.
This is a normal
condition before
turning on the
system.
On Off or
Flashing
On Faulty power
supply Replace the power supply.
On On Off Normal
operation
On On On Power supply
is faulty but still
operational Replace the power supply.
System pulse LEDs
This section describes the system pulse LEDs on the system board that monitors the system power-on and
power-off and boot progress.
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 24 for the location of these LEDs).
Table 14. System pulse LEDs
LED Description Action
RTMM 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 technician
only) replace the system board.
IMM2 heartbeat IMM2 heartbeat boot process.
The following steps describe the different stages
of the IMM2 heartbeat sequencing process.
1. When this LED is blinking fast
(approximately 4Hz), this indicates
that the IMM2 code is in the loading
process.
2. When this LED goes off momentarily, this
indicates that the IMM2 code has loaded
completely.
3. When this LED goes off momentarily and
then starts blinking slowing (approximately
1Hz), this indicates that IMM2 is fully
operational. You can now press the
power-control button to power-on the
server.
4. (Trained technician only) If this LED does
not blink within 30 seconds of connecting
a power source to the server, replace the
system board.
Chapter 4
.
Troubleshooting
95