Lenovo 3057 Maintenance Manual page 38

1 Power supply error LED
When the power supply error LED is lit in amber, it indicates that there is a power supply problem. To
identify the failing power supply, check the status LED near the power cord connector on the redundant
power supply. When the LED is lit in green, it indicates that the hot-swap redundant power supply is working
correctly. When the LED is lit in amber, it indicates that the hot-swap redundant power supply is likely to
fail or has failed.
2 Ambient temperature limit LED
When this LED is lit in amber, it indicates that the ambient temperature is below 7°C (44.6°F) or over 40°C
(104°F), which is not proper for server operation.
3 System fan error LED
When the system fan error LED is lit in amber, it indicates that one or more system fans are operating
slowly or have failed. To identify the failing system fans, check the status LEDs on the system board.
See "System board LEDs" on page 56.
4 Memory module status LED
When the memory module status LED is lit in amber, it indicates that one or more memory modules are
overheated.
5 Microprocessor status LED (also known as CPU status LED)
When the microprocessor status LED is lit in amber, it indicates that one or two microprocessors are
overheated.
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 13. IDM Premium panel
1
System fan error LEDs
2
CPU1 DIMM status LEDs
3
CPU2 DIMM status LEDs
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ThinkServer RD430 Hardware Maintenance Manual
4
Ambient temperature limit LED
5
Microprocessor status LEDs
6
Power supply error LEDs