3 FPGA heartbeat LED (green)
Description
The FPGA heartbeat LED helps you identify the FPGA status.
• Blinking (about one flash per second): FPGA is working normally.
• On or off: FPGA is not working.
Action
If FPGA heartbeat LED is always off or always on, do the following:
1. Replace the processor board.
2. If the problem remains, contact Lenovo Support.
4 DIMM error LEDs (amber)
Description When a memory module error LED is lit, it indicates that the corresponding memory module has
failed.
Action For more information, see
“Memory problems” on page 321.
Power-supply-unit LEDs
This topic provides information about various power supply unit LED status and corresponding action
suggestions.
The following minimal configuration is required for the server to start:
• One processor in processor socket 1
• One memory module in slot 7
• One power supply unit
• One HDD/SSD drive, one M.2 drive (if OS is needed for debugging)
• Three system fan-packs
The following table describes the problems that are indicated by various combinations of the power-supply
unit LEDs and the power-on LED and suggested actions to correct the detected problems.
Figure 329. LEDs on a CRPS Premium power supply unit
Chapter 7. Problem determination 309
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