Server User Manual

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.
1 PCI slot 1 error LED 9 Battery error LED
2 PCI slot 2 error LED 10 System-board error LED
3 PCI slot 3 error LED 11 VRM fail LED
4 HS heartbeat LED 12 CPU 1 error LED
5 PCI slot 4 error LED 13 DIMMs1-8error LEDs (starting
from the bottom)
6 PCI slot 5 error LED 14 DIMMs9-16error LEDs (starting
from the bottom)
7 PCI slot 6 error LED 15 CPU 2 error LED
8 IMM heartbeat LED 16 CPU mismatch LED
84 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual