LED
Status
Description
Action
Solid off
The memory modules
are operating at a normal
temperature.
4
Memory module
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.
Solid off
The microprocessors are
operating at a normal
temperature.
5
Microprocessor
status LED (also known
as CPU error LED)
Solid on (amber)
One or more microprocessors are
overheated.
Check the BMC for errors and
run the diagnostic programs.
See “Lenovo ThinkServer
Diagnostics” on page 14.
Intelligent Diagnostics Module Premium (IDM Premium)
The IDM Premium is available in some models to provide advanced diagnostic functions. The following
illustration shows the diagnostic LEDs on the IDM Premium panel.
Figure 10. IDM Premium panel
1
System fan error LEDs
4
Ambient temperature limit LED
2
CPU1 DIMM status LEDs
5
Microprocessor status LEDs
3
CPU2 DIMM status LEDs
6
Power supply error LEDs
24
ThinkServer RD640 User Guide and Hardware Maintenance Manual
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