User Service Guide, Fourth Edition - Server Expansion Unit

Chapter 4
Troubleshooting
Common Installation Problems
27
System and I/O Fan LEDs
There is a single three-color LED located on the front OLR fan, the rear OLR fan and the PCI I/O fan.
Figure 4-4 Fan LED Locations
Table 4-4 contains the LED states for the front, rear, and PCI I/O fans.
Table 4-4 Front, Rear and I/O Fan LED States
LED Driven By State Description
Fan Status Fan Solid Green Normal
Flash Yellow Predictive failure
Flash Red Failed
Off No Power
Front OLR Fan LED
Rear OLR Fan LED
PCI I/O Fan LED