Table 10. Suggested actions to correct the detected problem for each LED light (continued)
v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action step is preceded by “(Trained technician only)”, that step must be performed only by a trained
technician.
v Go to the IBM support website at http://www.ibm.com/supportportal to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
LED Description Action
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:
v One microprocessor
v One 1 GB DIMM
v Power supply
v Power cord
v ServeRAID SAS/SATA adapter
v One cooling fan
The following illustrations show the LEDs and connectors on the rear of the
respective 4U and 5U server models.
Chapter 4. Troubleshooting 129
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