1
System fan error LEDs
LED
Status
Description
Action
Solid off
The system fans are operating
correctly.
System fan error LED
Solid on (amber)
One or more system fans are
running at low speed or have
been removed.
Check the BMC for errors and
run the diagnostic programs.
See “Lenovo ThinkServer
Diagnostics” on page 14.
Note:
To identify the failing
system fans, check the status
LEDs on the system board. See
“System board LEDs” on page
54.
The following illustration shows the system fans and their numbers.
Note:
Depending on the model, your server might look slightly different from the illustration.
Figure 11. System fans
2
CPU1 DIMM status LEDs
3
CPU2 DIMM status LEDs
LED
Status
Description
Action
Solid off
The memory modules
are operating at a normal
temperature.
DIMM status LED
Solid on (amber)
One or more memory modules
are overheated.
Check the BMC for errors and
run the diagnostic programs.
See “Lenovo ThinkServer
Diagnostics” on page 14.
25
Summary of Contents for ThinkServer RD640
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