IBM 2145-8F2 Hardware Installation Manual page 35

Off One or more of the following are true:
v No power is present at the power supply input
v The power supply has failed
v The LED has failed
On The SAN Volume Controller is powered on.
Flashing
The SAN Volume Controller is turned off but is still connected to a
power source.
Location LED
This is the middle of the three LEDs and is not used by the SAN Volume
Controller.
System-error LED
This is the bottom of the three LEDs that indicates that a system board
error has occurred. The light path diagnostics provide more information.
Ac and dc LEDs
The ac and dc LEDs indicate whether the node is receiving electrical current.
Ac LED
The upper LED
present on the node.
Dc LED
The lower LED
present on the node.
Ac and dc LEDs on the SAN Volume Controller 2145-8F4 and the SAN Volume
Controller 2145-8F2:
The ac LED and dc LED are located on the rear of the SAN Volume Controller
2145-8F4 and the SAN Volume Controller 2145-8F2.
Figure 6 on page 12 shows the location of the ac and dc LEDs.
1
next to the power supply, indicates that ac current is
2
next to the power supply, indicates that dc current is
Chapter 1. SAN Volume Controller overview
11