Sun Fire X4440 Server
 

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In this Document

Goal

Solution

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

Applies to:

Goal

How to Replace a Sun Fire X4440 Power Distribution Board.

Solution

DISPATCH INSTRUCTIONS

WHAT SKILLS DOES THE FIELD ENGINEER/ADMINISTRATOR NEED?:
Sun Fire X4440 Training

TIME ESTIMATE: 90 minutes

TASK COMPLEXITY: 1

FIELD ENGINEER/ADMINISTRATOR INSTRUCTIONS:

PROBLEM OVERVIEW: A Sun Fire X4440 Power Distribution Board needs replacement

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

It is easier to service the power distribution board (PDB) with the bus bar assembly attached. If you are replacing a faulty PDB, you must remove the bus bar assembly from the old board and attach it to the new PDB.

You must remove the power distribution board to access the paddle card.

Note - FRU: This field-replaceable unit should be replaced only by qualified service technicians. Contact your Sun Service representative for assistance.

Caution - The system supplies power to the power distribution board even when the server is powered off. To avoid personal injury or damage to the server, you must disconnect power cords before servicing the power distribution board.

WHAT ACTION DOES THE ENGINEER NEED TO TAKE:

Removing the power distribution board.

1. Remove the motherboard assembly.

2. Remove all power supplies.

a. Grasp the power supply handle and press the release latch.

b. Slide the power supply out of the system.

3. Disconnect the top cover interlock cable from the power distribution board.

4. Disconnect the PDB ribbon cable from the power supply backplane.

5. Remove the four screws securing the L shaped bus bars from the PSU backplane to the PDB.

6. Remove the No. 2 Phillips screw securing the PDB to the chassis. [2]

7. Grasp the bus bar and pull the PDB/bus bar assembly to the left, away from the Paddle card.

8. Lift the PDB/bus bar assembly up and out of the system.

9. Place the PDB/bus bar assembly on an antistatic mat.

Installing the power distribution board.

1. Install the old bus bar onto the new PDB module.

Do not tighten the screws at this time. All 8 bus bar screws are tightened only after the motherboard is installed. The 4 motherboard to bus bar screws are loosely installed initially.

Caution - Failure to follow this procedure can result in intermittent contacts between the PDB and the Paddle card.

2. Lower the PDB/bus bar assembly into the chassis.

The PDB fits over a series of mushroom standoffs in the floor of the chassis.

3. Slide the PDB/bus bar assembly to the right, until it plugs into the Paddle card.

4. Install the four screws that attach the PDB to the PSU backplane.

5. Install the single screw retaining the PDB to the chassis. [2]

6. Install the five No. 2 Phillips screws to secure the PDB to the chassis. [2]

7. Connect the top cover interlock cable to the power distribution board. [3]

8. Connect the ribbon cable to the power distribution board. [3]

9. Install the motherboard assembly.

10. Install the power supplies.

Slide each power supply into its bay until it locks into place.

OBTAIN CUSTOMER ACCEPTANCE

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

PARTS NOTE:

N/A

REFERENCE INFORMATION:

Sun Fire X4440 Server Service Manual - Servicing the Power Distribution Board (PDB), Chapter 5.5

http://download.oracle.com/docs/cd/E19121-01/sf.x4440/820-3836-14/index.html

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