Power Supply-Fan Leds - IBM DS4800 User, Installation And Maintenance Manual

Figure 89. Power supply-fan LEDs
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IBM System Storage DS4800 Storage Subsystem: Installation, User's, and Maintenance Guide
4. Locate the failed power supply-fan by checking that the power supply-fan
Needs Attention LED that is turned on. (Figure 89 shows the LEDs on the
power supply-fan.)
Left power supply-fan unit
Service Action
Allowed LED
Needs Attention LED
Attention: Never remove a power supply-fan unless the Service Action
Allowed status LED is turned on.
5. Is the Service Action Allowed status LED turned on? (Figure 89 shows the
location of the Service Action Allowed status LED on the power supply-fan.)
v Yes – Go to step 6.
v No – Another component requires attention before you can remove the
power supply-fan. Normally, this indicates that a RAID controller is either
powered off or failed. Ensure that both DS4800 RAID controllers are
optimal. If the Service Action Allowed status LED of the failed power
supply-fan is not lit when both RAID controllers are optimal, contact your
IBM support representative.
Attention: Electrostatic discharge can damage sensitive components.
Touching the storage subsystem or its components without using a proper
ground might damage the equipment. To avoid damage, use proper antistatic
protection while handling any components.
6. Put on antistatic protection.
7. Unpack the new power supply-fan.
Save all packing materials in the event you need to return the new power
supply-fan.
8. Apply the appropriate label to the LED column for the replacement power
supply-fan unit. The labels and instructions are included with the replacement
power supply-fan. Make sure that the labels are aligned properly and do not
cover any LEDs.
9. Unlatch the top and bottom levers on the failed power supply-fan. Rotate both
levers out simultaneously and remove the failed power supply-fan. (Figure 90
on page 147 shows a power supply-fan sliding from the storage subsystem
chassis.)
Right power supply-fan unit
Needs Attention LED
Service Action
Allowed LED