HP SureStore E Disk Array 12H User's and Service Manual (C5445-90901, September 1999)

Appendix D. Back-to-Back Racking
Troubleshooting
253
Racking
Indicator LEDs
The exhaust fan assembly has four indicator LEDs located at the top front of the rack. The LEDs show the
condition of the exhaust fan assembly and power to the fan assembly.
Figure 54. Rack Indicator LEDs
LED 1 Green PDU 1 and PDU 1 fans normal
LED 2 Amber PDU 1 fan failure
LED 3 Green PDU 2 and PDU 2 fans normal
LED 4 Amber PDU 2 fan failure