How to Replace a SPARC T4-2 Power Supply Backplane:ATR:1418963.1:2

Asset ID:	1-71-1418963.1
Update Date:	2016-04-21
Keywords:

Solution Type Technical Instruction Sure

Solution 1418963.1 : How to Replace a SPARC T4-2 Power Supply Backplane:ATR:1418963.1:2

Applies to:

SPARC T4-2 - Version Not Applicable and later
Information in this document applies to any platform.

Goal

How to Replace a SPARC T4-2 Power Supply Backplane (PS Backplane)

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To report errors or request improvements on this procedure,
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Solution

DISPATCH INSTRUCTIONS

WHAT SKILLS DOES THE ENGINEER NEED:(IS A SITE ENGINEER AVAILABLE?)
SPARC T4-2 Server Training.

Time Estimate: 90 minutes

Task Complexity: 2

FIELD ENGINEER INSTRUCTIONS

PROBLEM OVERVIEW: Power Supply Backplane (PS Backplane) failure

WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY? :

DAMAGE ALERT: Perform a visual inspection of the replacement part to make sure that there are no damaged components, connectors, bent pins, damaged packages during shipping, etc. If the part is damaged, don't install it into the system, order a new part. Handle with caution and package carefully the return part to avoid any damages during shipping.

Caution: The system supplies power to the power board even when the server is powered off. To avoid personal injury or damage to the server, you must disconnect power cords before servicing the PS Backplane.

1. Prepare for servicing:
a. Attach an antistatic wrist strap.
b. Power off the server and unplug power cords from the power supplies.
c. Extend the server to the maintenance position.
d. Remove the top cover.

WHAT ACTION DOES THE ENGINEER NEED TO TAKE:

Remove the Power Supply Backplane (PS Backplane)

1. Pull both power supplies at least part way out of the chassis, to disconnect them from the PS Backplane.
2. Remove all memory risers or filler panels.
3. Remove the air divider by pulling it up and out of the chassis.
4. Remove the ribbon cable connecting the PS Backplane to the motherboard.
5. Remove the PS Backplane by completing the following tasks.
a. Remove the screw that holds the PS Backplane cover in place and remove the power supply cover.
b. Remove the four bus bar screws securing the motherboard to the PS Backplane and remove the motherboard to gain access to the bus bars. This will also involve disconnecting all cables that connect the PS Backplane, disk drive backplane, and fan board to the motherboard.
c. Disconnect the AC cables from PS Backplane and lift the PS Backplane out of the chassis.

Install the Power Supply Backplane (PS Backplane)

1. Unpack the replacement PS Backplane and place it on an antistatic mat.
2. Hold the PS Backplane at the end of the power supply cage and connect the AC cables to the AC connectors on the PS Backplane. Ensure that each AC cable is connected to the appropriate connector. The AC cable on the right must be connected to the AC connector on the right and the AC cable on the left must be connected to the AC connector on the left.

3. Insert the PS Backplane into position by completing the following tasks.
a. Ensure that the tabs on the power board slide onto the hooks on the power supply cage.
b. Install the motherboard and the four bus bar screws that secure the motherboard to the PS Backplane. This will also involve reconnecting all cables that connect the PS Backplane, disk drive backplane, and fan board to the motherboard.

Note: Using a No. 2 screwdriver, tighten the bus bar screws until the PS Backplane and the motherboard securely fasten to the bus bars.

c. Replace the PS Backplane cover and fasten it in place with the screw.

4. Reconnect the ribbon cable from the motherboard to the PS Backplane.
5. Reinstall the air divider by sliding it into the chassis.
6. Reinstall the memory risers or filler panels.
7. Push the power supplies all the way back into the chassis.
8. Return the server to operation:
a. Install the top cover.
b. Return the server to the normal rack position.
c. Reinstall the power cords to the power supplies and power on the server.

OBTAIN CUSTOMER ACCEPTANCE

Verify Power Supply Backplane Functionality

WHAT ACTION DOES THE FE/CUSTOMER NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE:
Boot system and monitor boot sequence for errors. Test functionality of system:
1. Run the Solaris "fmadm faulty" and SP/ILOM "show faulty" command (if only ALOM is supported run "showfaults -v" command) to verify that the fault has been cleared.
2. Perform one of the following tasks based on your verification results:
   * If the previous steps did not clear the fault, refer to doc 1004229.1 for information about the tools and methods you can use to diagnose and clear
     component faults.
   * If the previous steps indicate that no faults have been detected, the component has been replaced successfully. No further action is required
3. Restart software applications per applicable administration guides to resume system operation.

PARTS NOTE:

https://support.oracle.com/handbook_partner/Systems/SPARC_T4_2/components.html

REFERENCE INFORMATION:
SPARC T4-2 Service Manual
http://docs.oracle.com/cd/E23075_01/pdf/E23078.pdf

See also Oracle Integrated Lights Out Manager (ILOM) 3.0 Daily Management - CLI Procedures Guide:
http://download.oracle.com/docs/cd/E19860-01/E21445-01/E21445-01.pdf

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