Lenovo ThinkServer TD200x Hardware Maintenance Manual page 93

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
2
PCI slot 2 error LED
3
PCI slot 3 error LED
4
HS heartbeat LED
5
PCI slot 4 error LED
6
PCI slot 5 error LED
7
PCI slot 6 error LED
8
IMM heartbeat LED
9
Battery error LED
10
System-board error LED
11
VRM fail LED
12
CPU 1 error LED
13
DIMMs 1 - 8 error LEDs (starting
from the bottom)
14
DIMMs 9 - 16 error LEDs (starting
from the bottom)
15
CPU 2 error LED
16
CPU mismatch LED
Chapter 5. Diagnostics
85