How to Replace a Sun Ultra 27 Workstation CPU Module:ATR:1338480.1:1

Asset ID:	1-71-1338480.1
Update Date:	2016-01-20
Keywords:

Solution Type Technical Instruction Sure

Solution 1338480.1 : How to Replace a Sun Ultra 27 Workstation CPU Module:ATR:1338480.1:1

Applies to:

Sun Ultra 27 Workstation - Version: Not Applicable to Not Applicable - Release: N/A to N/A
Information in this document applies to any platform.

Goal

How to Replace a Sun Ultra 27 Workstation CPU Module

Solution

DISPATCH INSTRUCTIONS

WHAT SKILLS DOES THE ENGINEER NEED:
Sun Ultra 27 Product Knowledge/Training

TIME ESTIMATE: 60 minutes

*FIELD ENGINEER INSTRUCTIONS*

PROBLEM OVERVIEW:
CPU Module failure.

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

N/A

WHAT ACTION DOES THE ENGINEER NEED TO TAKE:

1. Power off the workstation.

2. Remove the left-side access panel.

3. Gently lay the system on its right side on a stable, nonslip surface.

4. Disconnect the heat sink's CPU fan cable from its connector on the motherboard.

5. Remove the heat sink assembly by alternately loosening (2-3 turns) the four captive screws that secure the heat sink assembly to the motherboard. Continue loosening each screw until all the screws are no longer securing the heat sink.

6. Grasp the heat sink by its plastic mounting bracket, and, while gently pulling upward, slowly wiggle the assembly back and forth to break the adhesive seal of the thermal compound.

7. Remove the heat sink-fan assembly from the chassis.

8. Place the heat sink on its side and on a flat surface to prevent the thermal compound from contaminating other components and the work space.

9. Depress the CPU socket retainer lever and slightly pull the lever outward (away from the CPU) to free the lever from its retaining clip.

10. When you have released the lever from the retaining clip, lift the lever to its fully open (upright) position.

11. Lift the unhinged side of the CPU socket retainer to its fully open (upright) position.

12. Grasp the notched edges of the CPU PCB and lift it out of the socket.

13. Remove the new CPU from the antistatic packaging.

14. Ensure that the CPU socket retainer lever and hinged socket retainer are in the fully open (upright) position.

15. Remove the new CPU from its antistatic packaging.

16. Hold the CPU by its notched sides.

17. Position the CPU over the CPU socket so that the notches on the PCB align with the keys on the socket.

18. Carefully set the CPU onto the socket.

19. When the CPU is positioned in the socket, lower the hinged socket retainer.

20. Lower the socket retainer lever, pressing it downward, and secure it under the lever retaining clip.

21. Do this step only if you are installing a new CPU. If you are installing a used CPU, go to Step 22.
     a. Gently wipe the top of surface of the CPU, using the supplied alcohol wipe, and allow to dry.
     b. Remove the plastic cover that protects the thermal compound on the bottom of the heat sink assembly.
     c. Go to Step 23.

22. Do this step if you are installing an already-used CPU onto a new motherboard.Otherwise, go to Step 23.
     a. Use an alcohol-soaked wipe to remove the thermal compound from the top of the CPU and the bottom of the heat sink.
     b. Use the supplied syringe to apply approximately 0.5 ml of thermal compound in a star pattern to the center of the top of the CPU.
     c. Using the clean edge of a plastic bag, spread the thermal compound until it covers the top of the CPU in a thin, uniform layer.

23. Inspect the heat sink-fan assembly for dust and lint. Clean if necessary.

24. Carefully position the heat sink-fan assembly over the CPU so that the arrow on the top points toward the front of the workstation.

25. Align the four captive screws on the heat sink assembly with the holes in the motherboard.

26. Lower the heat sink-fan assembly onto the top of the CPU, avoiding any side-to-side movement.

27. Press down slightly on the top of the heat sink-fan assembly while alternately tightening (3-5 turns) each of the four screws.

28. Connect the heat sink cable to the connector on the motherboard.

29. Close the workstation and prepare for operation.

OBTAIN CUSTOMER ACCEPTANCE

WHAT ACTION DOES THE CUSTOMER NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE:
Restart software applications per applicable administration guides to resume system operation.

REFERENCE INFORMATION:

See page 78 (Sun Ultra 27 Workstation Service Manual)

Sun Ultra 27 Workstation Service Manual
http://download.oracle.com/docs/cd/E19127-01/ultra27.ws/820-6776/index.html

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