Lenovo ThinkSystem SR850 V2 - Leds

Figure 16. System-board LEDs
Table 14. System board LEDs
1 System error LED (yellow)
6 Processor 2 error LED
2 Identification LED (blue)
7 Processor 1 error LED
3 Light path power LED 8 DIMM 1-24 error LEDs
4 XCC heartbeat LED (Green)
9 Fan error LEDs
5 FPGA heartbeat LED (Green)
Processor and memory expansion tray LEDs
See this section to locate the LEDs on the processor and memory expansion tray.
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ThinkSystem SR850 V2 Maintenance Manual