Sun Fire X4540 Server
 

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In this Document

Goal

Solution

Applies to:

Goal

How to Replace a Sun Fire X4540 Memory DIMM.

Solution

DISPATCH INSTRUCTIONS

WHAT SKILLS DOES THE FIELD ENGINEER/ADMINISTRATOR NEED:
No special skills required, Customer Replaceable Unit (CRU) procedure

TIME ESTIMATE: 30 minutes

TASK COMPLEXITY: 0

FIELD ENGINEER/ADMINISTRATOR INSTRUCTIONS:

PROBLEM OVERVIEW: A Sun Fire X4540 Memory DIMM needs replacement

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:

Power off the server.
Remove the cable management arm.
Remove the system controller.
Remove the CMA.
Unscrew the captive screw on the system controller handle.
Pull the system controller out of the chassis.
Use the handle to pull the system controller from the chassis with one hand while supporting the system controller weight with the other hand.
Loosen the two captive screws (with plastic green caps) under the system controller handle.
Remove the system controller cover.
Push the system controller cover toward the rear and lift it off the chassis.

Locate the DIMM slot on the CPU board on which you want to install or replace a DIMM.
The DIMM fault LEDs in the DIMM slot ejector levers indicate which DIMM has failed. These DIMM fault LEDs can be lit for up to one minute by a capacitor on the CPU board. To light the fault LED from the capacitor, push the small blue button on the CPU board, labeled “Press to see fault.”
One end of the DIMM ejector levers contain LEDs that can indicate a faulty DIMM:
- DIMM fault LED is off: The DIMM is operating properly.
- DIMM fault LED is on (amber): The DIMM is faulty and must be replaced.

Removing Memory Modules (DIMMs)

Rotate both DIMM slot ejectors outward as far as they will go. The DIMM is partially ejected from the socket.
Carefully lift the DIMM straight up to remove it from the socket.

Install Memory Modules (DIMMs)

Ensure that the DIMM slot ejectors at each end of the memory socket are fully open (rotated outward) to accept the new DIMM.
Align the notch in the bottom edge of the DIMM with the key in the DIMM socket.
Press down evenly on both top corners of the DIMM until the ejectors snap over the cutouts in the left and right edges of the DIMM.
Replace the cable management assembly if necessary.

OBTAIN CUSTOMER ACCEPTANCE

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

PARTS NOTE:

REFERENCE INFORMATION:
  Sun Fire X4500/X4540 Server Service Manual http://docs.oracle.com/cd/E19469-01/819-4359-19/index.html
  Sun Fire X4500/X4540 Servers Diagnostics Guide  http://docs.oracle.com/cd/E19469-01/819-4363-12/index.html

FE Feedback:
The x4540 service manual on page 3-63 seems to have a discrepancy about DIMM population rules. There's two processors on the x4540 system controller module. Minimum config is a matched pair of DIMM's on each processor in slots 6 & 7 respectively. The service guide says slots 0 & 1 in one spot and then slots 6 & 7 in another spot on page 3-63. In my situation the system was fully populated with 16 DIMM's and I was attempting to boot with a min config of 4 DIMM's. I tried both rules but only DIMM's in slots 6 & 7 of each processor will work.

Also, do not use one CPU for "minimum configuration" when troubleshooting DIMM issues.
The hardware does not support one CPU configuration. If you install one CPU, the system won't POST due to the HT coherent links are broken 

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