Silicon Graphics InfiniteStorage 4000 Series System Upgrade Manual page 32

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Figure 8 Controller LEDs
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 9 Power Supplies in the E2600 Controller-Drive
Tray
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.
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)
1. Power-Fan Canister for Controller A
2. Power-Fan Canister for Controller B