How to Replace a SPARC T8-2 Power Supply Backplane [VCAP]

Asset ID:	1-71-2291634.1
Update Date:	2018-03-19
Keywords:

Solution Type Technical Instruction Sure

Solution 2291634.1 : How to Replace a SPARC T8-2 Power Supply Backplane [VCAP]

Applies to:

SPARC T8-2 - Version All Versions and later
Information in this document applies to any platform.

Goal

How to Replace a SPARC T8-2 Power Supply Backplane

Solution

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To report errors or request improvements on this procedure, please add a comment on Doc ID: 2291634.1
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ESD Caution:

Circuit boards and drives contain electronic components that are extremely sensitive to static electricity. Ordinary amounts of static electricity from clothing or the work environment can destroy the components located on these boards. Do not touch the components along their connector edges.
Use a Antistatic Wrist strap. Attach one end of the strap to your wrist and the other end to the chassis, depending on what type of strap you use, with the adhesive end or the metal plug.
Use an Antistatic Mat. Place ESD-sensitive components such as motherboards, memory, and other PCBs on an antistatic mat.

Contamination Caution:

Dust particles of packaging material are number one cause of datacenter contamination. Make sure to remove all packaging material, up to the ESD safe packaging material, while still being outside the datacenter.

DISPATCH INSTRUCTIONS

WHAT SKILLS ARE REQUIRED?: SPARC T8-2 Product Training required, to be serviced by qualified Oracle Service personnel, requires the ability to follow steps similar to what is in the Product Service manual.

Time Estimate: 60 minutes

Task Complexity: 1

FIELD ENGINEER INSTRUCTIONS

PROBLEM OVERVIEW: SPARC T8-2 Power Supply Backplane Replacement

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

Note:

A data backup is not a prerequisite but is a wise precaution.
If the system is still up and functioning, the Customer should perform an orderly and graceful shutdown of the applications and operating system.
Then power off the server and remove the AC power cords from the system. For ALL scenarios where an AC power down or AC power cycle is required for a T8-x server, please always use the steps in doc 1571054.1 prior to physically removing AC power cables from the server.

Caution:

Power is supplied to the Power Supply Backplane 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.

WHAT ACTIONS ARE REQUIRED?:

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.

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.

Remove the Power Supply Backplane

1. Pull both power supplies at least part-way out of the chassis, to disconnect them from the PS backplane.

2. Remove the 4 memory risers for CM1, (4 Risers closest to the power supplies).

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 screw that holds the PS backplane cover in place

6. Remove the power supply cover (There are two slots on the PS backplane cover that you must guide around pins on the inside of the power supply cage):

a. Lift the cover up a little to clear the first part of the slots.
    b. Push the cover a little towards the front of the chassis.
    c. Push the tooth at the bottom of the cover to clear the edge of the power supply cage.
    d. Lift the cover out of the chassis.

7. Remove the four bus bar screws that secure the motherboard to the PS backplane.

8. Disconnect the AC cables from PS Backplane (Tilt the PS backplane to access the cable connectors).

9. Lift the PS backplane out of the chassis.

Install the Power Supply 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 at an angle and connect the AC cables to the AC connectors on the PS Backplane (Ensure that each AC cable is connected to the appropriate connector. You must connect the AC cable on the right to the AC connector on the right and the AC cable on the left to the AC connector on the left).

3. Insert the PS Backplane into position (Ensure that the tabs on the power board slide onto the hooks on the power supply cage).

4. Install the four bus bar screws to secure the mother board to the PS Backplane (Use a No. 2 Phillips screwdriver to tighten the bus bar screws until the Power Supply Backplane and the motherboard are securely fastened to the bus bars).

5. Replace the PS Backplane cover:

a. Align the PS Backplane cover (Ensure that the tooth at the bottom of the cover is clear of the power supply cage. There are two slots on the Power Supply Backplane cover that you must guide around pins on the inside of the power supply cage).
    b. Fit the two slots on the cover around the two pins.
    c. Lift up the cover a little to guide the two pins into the other part of the slots.
    d. Attach the screw to fasten the PS Backplane cover in place.

6. Reconnect the ribbon cable from the motherboard to the PS Backplane.

7. Reinstall the air divider by sliding it into the chassis.

8. Reinstall the memory risers for CM1.

9. Push the power supplies all the way back into the chassis.

10. 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:

Run the Solaris "fmadm faulty" and SP/ILOM "show faulty" command to verify that the fault has been cleared.
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
Restart software applications per applicable administration guides to resume system operation.

PARTS NOTE:
https://support.oracle.com/handbook_partner/Systems/SPARC_T8_2/components.html#Power

REFERENCE INFORMATION:
SPARC T8-2 Service Manual: https://docs.oracle.com/cd/E79179_01/html/E80511/index.html

Save

References

<NOTE:1571054.1> - Performing an AC power cycle on the T3/T4/T5/S7/T7/T8 Servers

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