How to Replace a Netra X4250 System Board

Asset ID:	1-71-1494070.1
Update Date:	2016-01-20
Keywords:

Solution Type Technical Instruction Sure

Solution 1494070.1 : How to Replace a Netra X4250 System Board

Applies to:

Sun Netra X4250 Server - Version All Versions and later
Information in this document applies to any platform.

Goal

How to replace a Netra X4250 System Board

Solution

DISPATCH INSTRUCTIONS

- WHAT SKILLS DOES ENGINEER NEED: Sun X86 Servers

- TASK COMPLEXITY: 3

- TIME ESTIMATE: 180 minutes

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

Write down serial number of original board
Confirm the customer has a copy of original BIOS and ILOM configuration parameters

Power off the server.

Disconnect the power cord (or cords) from the power supply (or supplies).
Remove the server from the rack.
Attach an antistatic wrist strap.
Remove the top cover.

WHAT ACTION DOES ENGINEER NEED TO TAKE:
A. Write down a simple wiring diagram prior to replacement.
Step I: Remove OLD System Board Assembly

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

3. Remove the System Fan Assembly
a. Disconnect the fan assembly cable from the power board
b. Remove the fan assembly cable from the cable guides.
c. Insert your forefinger and thumb into the holes at the top of the fan assembly, squeeze your fingers
together, and lift the fan assembly from the chassis
4. Remove the DIMMs
a. Push down on the ejector tabs on each side of the DIMM until the DIMM is released
b. Grasp the top corners of the faulty DIMM and remove it from the server.
c. Place the DIMM on an antistatic mat, in an order that will help you re-install in the same DIMM locations
d. Repeat Step a through Step c to remove any additional DIMMs.
5. Remove the Alarm Board
a. Disconnect the cables from the alarm board
b. Remove the four alarm board screws, and lift the board up and out of the chassis
c. Set the alarm board aside on an antistatic mat
6. Disconnect the internal cables connected to the motherboard.
a. Disconnect the cable connected to the PDB.
b. Disconnect the two cables connected to the media bay assembly.
7. Loosen/Remove the screws that secure the motherboard assembly to the chassis
8. Loosen the two captive screws at the center of the motherboard assembly
9. Lift slightly and slide the motherboard assembly forward approximately one inch (25.4 mm)
10. Lift up on the right edge to approximately a 45 degree angle
11. Remove the motherboard assembly from the chassis, set down on ESD mat. Write down PN & SN.
12. Visually inspect old system board and note any obvious damage.

Step II: Installation of NEW System Board Assembly

1. Remove the replacement system board from its packaging and place it on an ESD mat.
2. Lower the left edge of the system board into the chassis, then the entire board, and while
slightly elevated, slide the system board to the back of the chassis.
3. Align the system board screw holes over the chassis standoffs.
4. Tighten the two captive screws at the center of the system board.
5. Install the two power screws and four other screws that secure the system board to the chassis.
6. Reconnect the cables to the following connectors on the system board.
7. Install the Alarm Board
a. Seat the alarm board back into the chassis, and tighten the four alarm board screws.
b. Reconnect the alarm board cables
c. Route the cables into the cable guides.
8. Remove/Reinstall the CPUs
a. Identify which CPU is to be reinstalled on the new motherboard.
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.
g. Reinstall the CPU into the new motherboard
h. Place the CPU in the socket.
Ensure that the orientation is correct.
i. Lower the pressure plate.
Ensure that the pressure plate sits flat around the periphery of the CPU.
j. Engage the lever by rotating it downward and slipping it under the catch.
k. Clean off the old thermal interface material from the heatsink and CPU
l. Reapply the grease into a thin, even layer on top of the CPU
m. Orient the heatsink so that the two screws line up with the mounting studs.
n. Tighten the screws alternately a 1/2 turn until fully seated.
o. Repeat step b through step n for the other CPU.
9. Reinstall the DIMMs, ensure that the DIMMs are being installed in the same slots as original motherboard.
10. Install the System Fan Assembly
a. Insert your forefinger and thumb into the holes at the top of the fan assembly,
squeeze your fingers together, and lower the fan assembly into the chassis.
b. Reconnect the fan assembly cable to the power board
c. Route the fan assembly cable back into the cable guides
11. Install the PCI Mezzanine and the PCI cards in the correct original slots
12. 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
13. Install the top cover
14. Reinstall the server in the rack
15. Reconnecting cables to the server
16. Power On the server

After motherboard replacement is completed:
- Observe boot sequence, enter BIOS setup - perform a factory default on saved parameters, then reset parameters with customer configuration.
- Change serial number from 0000000000 to original.
- Obtain customer acceptance

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

The Netra x4250 server uses the sdfru.exe utility found on the tools and driver disc to update the serial number data.

Please refer to document 'x86_serial_number_10_min_1.1.1.pdf' for additional scope on reprogramming the serial number of the system board.

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