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Figure 56. LEDs on the front of a power supply unit
1
Input power
2
DC power
3
Fault indicator
Table 19 on page 67 explains the function and status that is indicated by each of the LEDs. The power
cords for each PSU are accessible from the rear of the expansion enclosure (
page 69.
Table 19. Power supply unit LEDs
Function
Color
1
Input power
Green
2
DC power
Green
3
Fault
Amber
LEDs of drives and secondary expansion modules
Each of the drives and secondary expansion modules within the expansion enclosure has two LED
indicators.
Figure 57 on page 67 shows the components of a drive assembly. Each drive has an online indicator (
and fault indicator (
Figure 57. LEDs on a drive assembly
Table 20 on page 68 describes the meaning of the LEDs on each drive.
Status
On
Off
On
Off
On
Off
3
).
Description
The input voltage is within specification.
No power input detected.
DC power outputs are within specification.
DC power is not available.
A fault is detected in the PSU.
No faults are detected.
Chapter 5. Installing Model 092 expansion enclosure 67
1
), as shown in Figure 59 on
2
)
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