Sun Netra X4250 Server
 

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In this Document

Goal

Fix

Oracle Confidential (INTERNAL). Do not distribute to customers.
Reason: needed for repair

Applies to:

Goal

How to replace a Netra X4250 Faulty CPU

Fix

DISPATCH INSTRUCTIONS

WHAT SKILLS DOES ENGINEER NEED:
Sun X86 Servers

Task Complexity: 2

TIME ESTIMATE: 120 minutes

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

What Action Does the Engineer Need to Take:

1. Verify with customer system is available for power down.
2. Label all cables connected to the server and disconnect.
3. Remove the server from the rack
4. Prepare Antistatic Measures
5. Remove the top cover

Step I: Remove Faulty CPU
1. Remove the Air Duct
      a. Facing the server, release the tab on the right of the air duct and pull upward
      b. Lift the duct out of the chassis, releasing the duct from the pins on the left side of the chassis,
          and set it aside on an antistatic mat
2. Removing the PCI Mezzanine
      a. Remove PCI cards from PCI mezzanine, place in order on antistatic mat
      b. Disconnect the PCI mezzanine cable
      c. Use a No. 2 Philips screwdriver to loosen the four green captive screws securing the PCI mezzanine
      d. Lift the PCI mezzanine up and out
      e. Lift the PCI mezzanine away from the chassis and place it on an antistatic mat
8. Remove the faulty CPU
      a. Identify which CPU is to be replaced.
      b. Unscrew the two heatsink screws.
      c. Twist the heatsink slightly to break the seal with grease, and then lift off the heatsink.
      d. Disengage the lever by pushing down and moving it to the side, and then rotating upward.
      e. Open the pressure frame.
      f. Remove the CPU.

Step II: Install New CPU
1. Install new CPU
      a. Place the new CPU in the socket.
          Ensure that the orientation is correct.
      b. Lower the pressure plate.
          Ensure that the pressure plate sits flat around the periphery of the CPU.
      c. Engage the lever by rotating it downward and slipping it under the catch.
      d. Using the supplied grease syringe, empty the syringe onto the CPU in a star-shaped pattern
      e. Clean off the old thermal interface material from the heatsink and CPU
      f. Reapply the grease into a thin, even layer on top of the CPU
      g. Orient the heatsink so that the two screws line up with the mounting studs.
      h. Tighten the screws alternately a 1/2 turn until fully seated.
2. Install the Air Duct
      a. With the duct at a 45 degree angle, position the pin holes in the duct to align with the pins of the chassis.
      b. Lower the duct to the horizontal position until the tab secures in place
3. Install the PCI Mezzanine and PCI Cards in correct original slots
4. Install the top cover
5. Reinstall the server in the rack
6. Reconnecting cables to the server
7. Power On the server

WHAT ACTION DOES CUSTOMER NEED TO TAKE TO RETURN SYSTEM TO AN OPERATIONAL STATE:
1. Boot up server.
2. Monitor and check messages file (if Solaris or Linux) under usual load by server to check for normal CPU temperatures and operation
3. Use fmadm/fmdump to clear previous faults affecting old system board.
4. Connect to BUI and eventually clear any remaining faulty component, if applicable to system board assembly, clear SEL log and reset SP

PARTS NOTE:

REFERENCE INFORMATION:
Netra X4250 Server Service Manual 


Please refer to document 'x86_serial_number_10_min_1.1.2.pdf' for additional scope on reprogramming the serial number of the system board.

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