Lenovo ThinkServer TS200 Hardware Maintenance Manual page 70

1
Fan 5 error LED
2
Fan 4 error LED
3
H8 Heartbeat LED
4
Fan 3 error LED
5
Fan 2 error LED
6
Fan 1 error LED
7
SAS/SATA Controller LED
8
IMM heart beat LED
The server is designed so that LEDs remain lit when the server is connected to an ac power source but is
not turned on, provided that the power supply is operating correctly. This feature helps you to isolate the
problem when the operating system is shut down.
Note: When you disconnect the power source from the server, you lose the ability to view the LEDs because
the LEDs are not lit when the power source is removed. Before you disconnect the power source, make
a note of which LEDs are lit, including the LEDs that are lit on the operation information panel and LEDs
inside the server on the system board.
Many errors are first indicated by a lit system-error LED on the control-panel assembly of the server. If this
LED is lit, one or more LEDs elsewhere in the server might also be lit and can direct you to the source
of the error.
Before you work inside the server to view the LEDs, read "Important Safety Information" on page 1 and
"Handling static-sensitive devices" on page 141.
If an error occurs, view the server LEDs in the following order:
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Hardware Maintenance Manual
9
PCI Express slot 2 error LED
10
PCI Express slot 1 error LED
11
Microprocessor error LED
12
Battery error LED
13
Standby power LED
14
System board error LED
15
DIMM 1-6 error LEDs