Lenovo ThinkServer RD530 Hardware Maintenance Manual page 55

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 helps you to isolate problems
when the server is not turned on. Many errors are first indicated by a lit error LED on the diagnostic panel
of the server. If an LED is lit, one or more LEDs elsewhere in the server might also be lit to direct you to
the source of the error.
The following illustration shows the ThinkServer Management Module status LED and system fan error LEDs
on the system board.
Figure 26. System board LEDs
1
ThinkServer Management Module status LED
2
System fan 8 error LED
3
System fan 7 error LED
4
System fan 6 error LED
5
System fan 5 error LED
6
System fan 4 error LED
7
System fan 3 error LED
8
System fan 2 error LED
9
System fan 1 error LED
.
Chapter 3 Product overview
41