User Guide
1. Overview
1.11 LEDs
1.11.5
Rear Fan LED
The Rear Fan has a single LED with three distinct states for indicating a fault condition, identification, or
normal operation.
Figure 11:
Fan LED Location
Table 14:
Fan LED Identification
Number
LED Name
Color
Behavior
1
Fan LED
Amber
Blink
@ 1 Hz (50% duty cycle) – Fan is reporting faults
Blink
@ 2 Hz (50% duty cycle) – Fan is being identified
Off
– Fan is on and reporting no faults
1.11.6
Drive Assembly LED
The HDD drive assembly itself does not contain an LED, but it contains a light-pipe that displays the
multi-function LED located on the drive slot. This amber LED has three distinct states for indicating a fault
condition, identification, or normal operation.
15
