Technical data

Figure 26 Controller LEDs

1. Host Link 1 Service Action Required LED (Amber)

2. Host Link 2 Service Action Required LED (Amber)

3. Battery Service Action Required LED (Amber)

4. Controller Service Action Allowed LED (Blue)

5. Controller Service Action Required LED (Amber)

7. Turn off the Power switch on each of the power-fan canisters, and wait until all

LED and seven-segment display activity on the rear of the controller-drive tray

has stopped.

Figure 27 Power Switches in the E5412 Controller-Drive Tray or the

E5424 Controller-Drive Tray

1. Power Switch for Controller A

8. Disconnect the following cables from both controller canisters.

— Host interface cables

— Drive interface cables

— Ethernet cables

If fiber-optic cables are present, you can lift the two release levers and partially

remove the controller canister. Opening these release levers makes it easier to

press down on the fiber-optic cable release tab.