3.Remove the server cover and look inside the server for lit LEDs. Certain components inside the server have LEDs that are lit to indicate the location of a problem.
The following illustration shows the LEDs on the system board.
PCI slot 1 error LED | Battery error LED |
PCI slot 2 error LED | |
PCI slot 3 error LED | VRM fail LED |
HS heartbeat LED | CPU 1 error LED |
PCI slot 4 error LED | DIMMs 1 - 8 error LEDs (starting |
| from the bottom) |
PCI slot 5 error LED | DIMMs 9 - 16 error LEDs (starting |
| from the bottom) |
PCI slot 6 error LED | CPU 2 error LED |
IMM heartbeat LED | CPU mismatch LED |
84ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual
