How to Remove and Replace a Ultra 24 Workstation Motherboard

Asset ID:	1-71-1349740.1
Update Date:	2018-04-05
Keywords:

Solution Type Technical Instruction Sure

Solution 1349740.1 : How to Remove and Replace a Ultra 24 Workstation Motherboard

Applies to:

Sun Ultra 24 Workstation - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Goal

How to Remove and Replace a Ultra 24 Workstation Motherboard

Solution

DISPATCH INSTRUCTIONS
- WHAT SKILLS DOES THE ENGINEER NEED:Only by trained field service technicians.
- TIME ESTIMATE: 150 minutes
- TASK COMPLEXITY: 4

FIELD ENGINEER INSTRUCTIONS:
- PROBLEM OVERVIEW:How to Remove and Replace a Ultra 24 Workstation Motherboard
- WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY?:

A data backup is not a pre-requisite but is a wise precaution.
The customer should conduct an orderly software system shutdown.

Then power down the system and disconnect the Power Cord.

- WHAT ACTION DOES THE ENGINEER NEED TO TAKE:

1. Powering Off the System and Removing the Left-Side Access Panel.

I. Power off the system and all the peripherals connected to it.
II. Turn the power switch on the back of the chassis to the Off position.

CAUTION! - Failure to properly turn off the system before you start installing components can cause serious component damage.

   III. To maintain system grounding, do not unplug the AC power cord from the back of the system unless the specific procedure instructs you to unplug it.
   IV. Loosen the two captive thumbscrews located on the rear edge of the left side access panel
   V. Slide the access panel approximately 1.5 cm toward the back of the workstation.
   VI. Tilt the top edge of the panel out, then lift the panel upward.
   VII. Carefully set the panel aside.

Remove the Motherboard

2. Gently lay the system on its right side on a stable, nonslip surface.
3. Remove any PCI or PCIe cards installed on the motherboard (see To Remove a PCI Card).
4. Remove the DIMMs and the CPU from the motherboard.
5. Disconnect all cables attached to the motherboard.
6. Remove the nine Phillips screws that fasten the motherboard to the chassis.
7. Pull the motherboard away from the chassis.
See the following sections for information about how to remove and replace the CPU and memory:

* Replacing the Heatsink and CPU

* Removing and Installing DIMMs

Install the Motherboard

A motherboard FRU contains two components, the motherboard and the heatsink mounting bracket. To complete this procedure you must mount the bracket onto the backside of the motherboard before you install the motherboard into the workstation chassis.

CAUTION! - Observe proper ESD precautions when handling a new motherboard.

1. Remove the motherboard from the anti-static packaging.
You need to use the internal ESD EPE (pink) foam packaging material as part of this procedure.
2. Place the motherboard face down onto the ESD EPE foam packaging material.
The foam protects the components on the top side of the motherboard and offers additional ESD protection.
3. Locate the four bracket mounting holes on the backside of the motherboard
4. Remove the mounting bracket from the package.
One side of the mounting bracket has four threaded standoffs and a protective paper-backing.
5. Peel the protective paper-backing from the bracket
6. Align the four threaded standoffs on the bracket with the four holes on the back side of the motherboard.
7. Place the bracket on to the backside of the motherboard, taking care to seat the threaded standoffs inside the bracket mounting holes
8. Gently apply enough pressure to the mounting bracket so that the adhesive on the bracket contacts and adheres to the backside of the motherboard.
This exposes an adhesive surface on the bracket.

CAUTION! - Excessive force can cause irreparable damage to the motherboard and components on the top side of the motherboard.

9. Turn the motherboard over and place it in the chassis so that the nine screw holes in the motherboard align with the nine threaded standoffs inside the chassis.
10. Fasten the motherboard to the chassis using the nine Phillips screws and a #2 Phillips screwdriver. Use a torque tool to torque the screws to 8 to 9 inch-pounds.
11. Install the CPU and heatsink. Refer to the following sections for information about removing and replacing the CPU and heatsink: Replacing the Heatsink and CPU
12. Install the DIMMs as necessary. Refer to the following sections for information about removing and replacing the memory:

    o Removing and Installing DIMMs

13. Install any PCI cards or a PCIe graphics card. See the following sections:

    o To Install a PCIe Card

14. Reconnect all internal system cables.

   See Replacing System Cables.

15. Verify that all system components are securely installed or connected.

16. Close the system
OBTAIN CUSTOMER ACCEPTANCE
- WHAT ACTION DOES THE CUSTOMER NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE:Power on the system, and verify the installation

PARTS NOTE:

REFERENCE INFORMATION:

Sun Ultra 24 Workstation Service Manual
http://download.oracle.com/docs/cd/E19127-01/ultra24.ws/820-2480-12/

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