Sun Ultra 20 Workstation
 

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In this Document

Goal

Solution

Oracle Confidential PARTNER - Available to partners (SUN).
Reason: FRU CAP

Applies to:

Goal

How to remove and replace an Ultra 20 Workstation CPU.

Solution

DISPATCH INSTRUCTIONS
- WHAT SKILLS DOES THE ENGINEER NEED:
- TIME ESTIMATE: 30 minutes
- TASK COMPLEXITY: 1

FIELD ENGINEER INSTRUCTIONS:
- PROBLEM OVERVIEW: how to remove or replace a CPU and heatsink.
Note - The CPU is not a CRU and should be replaced only by trained field service technicians. The exception is the AMD Opteron model 180.

- 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:

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AMD OPTERON MODEL 180 CPU

If you are installing an AMD Opteron model 180 CPU, you must use the heatsink/fan assembly that is included with the model 180 CPU.

The model 180 processor can be installed without a field service technician present. Make sure to carefully follow this installation procedure to avoid damaging the processor

You will note that the heatsink/fan assembly that is included with the CPU looks different than the assembly depicted in the remove and install procedures. Otherwise, the procedure for installing the CPU and heatsink/fan assembly is the same as the procedure in the following sections.

CAUTION! - Failure to use the supplied heatsink for the Opteron 180 will cause insufficient cooling, leading to premature failure of the processor.
******

Removing a Heatsink and CPU
To remove a heatsink and CPU:

Note - Before removing a CPU from the motherboard, create a backup file to preserve all important data.

1. Turn off the power button on the back panel and all of the peripherals connected to the workstation.
2. Disconnect the power cord.
3. Remove the left-side access panel.
4. Gently lay the system on its right side on a stable, nonslip surface.
CAUTION! - The heatsink can become extremely hot. Allow a few minutes for the heatsink to cool before attempting this procedure.
5. Disconnect the CPU fan cable from its connector on the motherboard.
6. Pull up the black lever on the right side of the heatsink/fan assembly to loosen the metal latch from the hook on the retaining bracket
7. Push down the metal latch on the left side of the assembly to loosen the latch from the hook on the retaining bracket.
8. Twist the heatsink/fan assembly to the right or the left, in order to break the seal with the thermal grease.
9. Lift the heatsink/fan assembly straight up and withdraw it from the board
10. Place the heatsink upside down on a flat surface to prevent the thermal grease from contaminating other components.
11. Depress, and then pull up the CPU socket retainer lever up to the fully open, perpendicular position.
12. Lift the CPU out of the socket, leaving the retainer lever in the open position.
13. Install the heatsink and CPU as shown in Section 4.5.11.3, Installing a Heatsink and CPU.
4.5.11.3 Installing a Heatsink and CPU


To install a heatsink and CPU:

Note - Observe the ESD precautions and pre-installation procedures described in Section 4.2.1, ESD Precautions.

1. Ensure that the CPU socket retainer lever is in the fully open, upright position.
2. Align the CPU to its socket so that pin 1 of the CPU (indicated by the notched corner) is aligned with hole 1 of the socket (indicated by the arrow in the corner of the socket).
3. Insert the CPU into the socket.

Note - When correctly aligned, the CPU should drop effortlessly into the socket. Do not attempt to force the CPU into the socket to seat it.

4. When the CPU is positioned in the socket, press down on the socket retainer lever to lock the CPU in place.
5. Do one of the following:
* If you are installing a new CPU:
a. Clean any contamination from the top of surface of the CPU, using the supplied alcohol wipe.
The heatsink assembly already has thermal grease applied. You do not need to apply additional thermal grease.
b. Remove the plastic cover from the heatsink/fan assembly.
* If you are replacing an already used CPU on a new motherboard:
a. Remove the grease from the CPU and remove the thermal interface material from the heatsink using the alcohol wipe supplied with the motherboard.
b. Use the syringe that is supplied with the motherboard to apply approximately 0.5 ml of thermal grease to the center of the top of the CPU.

Empty the entire syringe onto the chip.
c. Using the wrapper of the alcohol wipe or a finger inserted into a clean plastic bag, spread out the thermal grease to a thin uniform thickness over the CPU.

CAUTION! - Do not use an unprotected finger to spread the thermal grease, as the oils on your finger will degrade the performance.

6. Inspect the heatsink/fan assembly for dust and lint. Clean if necessary.

CAUTION! - If you are installing an Opteron model 180 processor, make sure to use the heatsink supplied with the processor. Failure to use the supplied heatsink for the Opteron 180 will cause insufficient cooling, leading to premature failure of the processor.

7. Carefully position the heatsink/fan assembly on the CPU, aligning it with the mounting hooks to reduce movement after it makes initial contact with the layer of thermal grease.

CAUTION! - If the heatsink assembly is moved too much during its installation, the layer of thermal grease might not be distributed evenly, leading to component damage.

8. Attach the retaining bracket hook to the metal latch on the left side of the heatsink/fan assembly.
9. Push down on the black lever on the right side of the heatsink/fan assembly to secure the metal latch to the hook on the retaining bracket.
10. Connect the CPU fan cable to the connector on the motherboard.
11. Replace the left-side access panel.


OBTAIN CUSTOMER ACCEPTANCE
- WHAT ACTION DOES THE CUSTOMER NEED TO TAKE TO RETURN THE SYSTEM TO
AN OPERATIONAL STATE:

PARTS NOTE:
https://support.oracle.com/handbook_private/Systems/Ultra20/components.html

REFERENCE INFORMATION:

Sun Ultra 20 Workstation User Guide
http://download.oracle.com/docs/cd/E19127-01/ultra20.ws/819-2146-13/index.html

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