The following illustrations show the light-emitting diodes (LEDs) on the system board.
Figure 1. System-board LEDs
| 1 Battery error LED | 4 XClarity Controller heartbeat LED |
| 2 Field-Programmable Gate Array (FPGA) Heartbeat LED | 5 ME Heartbeat LED |
| 3 Field-Programmable Gate Array (FPGA) error LED |