Lenovo System x3250 M4, Installation And Service Manual

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Table 12. The suggested actions to correct the detected problem for each LED light (continued)
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by “(Trained technician only)”, that step must be performed only by a trained
technician.
• Go to the IBM support website at http://www.lenovo.com/support to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
LED Description Action
correctly, see “Replacing a microprocessor
and heat sink” on page 194.
3. Replace the following components one
at a time, in the order shown, restarting
the server each time:
a. (Trained technician only) Failing
microprocessor
b. (Trained technician only) System
board
System-board error LED System-board CPU VRD and/or power
voltage regulators have failed. (Trained technician only) Replace the
system board.
IMM2 heartbeat LED Indicates the status of the boot process of
the IMM2.
When the server is connected to power
this LED flashes quickly to indicate that the
IMM2 code is loading. When the loading
is complete, the LED stops flashing briefly
and then flashes slowly to indicate that the
IMM2 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 technician only) Recover the
firmware (see “Recovering the server
firmware (UEFI update failure)” on page
118).
2. (Trained technician only) Replace the
system board.
RTMM heartbeat LED Power-on and power-off sequencing. 1. If the LED flashes at 1Hz, it is
functioning properly and no action is
necessary.
2. (Trained technician only) If the LED is
not flashing, replace the system board.
Power-supply LEDs
This section describes the power-supply LEDs on the rear of the server and the suggested actions to
correct the detected problems.
The following minimum configuration is required for the server to start:
• One microprocessor
• One 1 GB DIMM
• Power supply
• Power cord
• ServeRAID SAS/SATA adapter
• Four cooling fans
The following illustration shows the LEDs and connectors on the rear of the fixed power-supply model.
Chapter 4
.
Troubleshooting
93