Power Supply Unit - Sun Microsystems Cobalt LX50 User Manual

Power Supply Unit

Caution: Your Sun Cobalt LX50 server does not have a redundant power supply. Before
replacing the power supply, you must take the server out of service.
!
Caution : Before touching or replacing any component inside the LX50 server, disconnect all
external cables and follow the instructions in "Safety: Before You Remove the Cover" on
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page 5-2 and "Removing and Replacing the Cover" on page 5-3. Always place the server on a
grounded ESD pad and wear a properly grounded antistatic wrist strap.
Follow these steps to replace the power supply:
1. Before removing the cover to work inside the system, observe the safety guidelines previously mentioned.
2. Unplug the power cord from the power source and the power supply module.
3. Remove the chassis cover.
Caution: As shown in Figure 66, lift the rear of the power supply module up only enough to
clear the raised guides. Lifting higher may damage the edge connector and power distribution
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board.
Figure 66. Removing the Power Supply
A
C
Rear View of
Power Supply
4. Lift the rear of the module up (A) only enough to clear the raised guides (C) on the chassis floor.
5. Push the module to the rear of the chassis (B) until it disengages from the power distribution board.
6. Lift the module out of the chassis.
7. Place the edge connector end of the replacement module onto the chassis floor and slide it toward the front of the
chassis until the edge connector is fully inserted in the power distribution board connector.
A
B
User Guide—Sun Cobalt LX50 Server
Customer Replaceable Unit (CRU) Procedures
OM11693
5-7