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Chapter 10 Fan Modules Replacement 10-13
10.1.13 Accessing the SPARC Enterprise M4000 172-mm
Fan Backplane
Caution – There is an electrical hazard if the power cords are not disconnected. All
power cords must be disconnected to completely remove power from the server.
1. Power off the server.
This step includes turning the key switch to the Service position, confirming that
the POWER LED is off, and disconnecting power cables. See “Powering the
Server Off Using Software” on page 4-12.
Caution – To prevent the equipment rack from tipping over, you must deploy the
antitilt feature, if applicable, before you slide the server out of the equipment rack.
Note – When drawing out the SPARC Enterprise M4000/M5000 Server to the front,
release the cable tie holding the PCI cables on the rear of the server.
2. Deploy the rack’s antitilt features (if applicable) and slide the server out of the
equipment rack.
See “Sliding the Server Out of the Equipment Rack” on page 5-2.
Caution – Use proper ESD grounding techniques when handling components. See
“Safety Precautions” on page 1-1.
10.1.14 Removing the SPARC Enterprise M4000 172-mm
Fan Backplane
1. Remove the 172-mm fan units and place them on an ESD mat.
See “Removing the 172-mm Fan Module” on page 10-8.
2. Loosen the two (2) captive screws and remove the fan cage.
The fan cage previously held the 172-mm fan units in place.
3. Loosen the remaining captive screw that secures the 172-mm fan backplane.
4. Disconnect the cable from the 172-mm fan backplane.