Sun Microsystems StorEdge A3000, Manual

Page: 113 / 152

Chapter 7 Power Subassemblies 7-3
2. Once the power supplies turn on again, check all the LEDs on the controller
module and on drive trays in the expansion cabinet for faults or damage.
See Section 4.1 “Checking the Controller Module LEDs” on page 4-2.
7.2 Checking and Replacing Power Cords
1. Make sure the cords are connected securely and have no evidence of damage.
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If they are damaged, go to the next step.
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If they look normal, there might be a problem with a power supply, power
harness, or the power interface board. See Chapter 4 for troubleshooting
procedures.
2. Stop all activity to the controller module.
The Fast Write LED on the front panel off the controller module and the Active LEDs
on the drives should be off (not blinking). Make sure that no Fault LEDs are lit.
3. Power off the controller module.
See Section 3.2 “Powering Off the Controller Module and System” on page 3-3.
4. Power off the expansion cabinet, if necessary.
Refer to your expansion cabinet documentation for instructions.
Caution –
If the power cable is so damaged that there is a risk of electric shock, you
should power down the expansion cabinet before proceeding.
5. Disconnect the power cord from the controller module and the power sequencer
in the cabinet.
6. Connect the new power cord, making sure that you connect the cord into the same
outlet on the power sequencer from which you removed the old cord.
7. Power on the expansion cabinet, if necessary.
See Section 3.1 “Powering On the Controller Module and System” on page 3-2.
8. Check the LEDs for errors.