6.6 How to Replace the DC-to-DC Converter

6.6.1 Before You Begin

Complete this task:

• "2.8 How to Avoid Electrostatic Discharge"

The DC-to-DC converter on this system is an assembly consisting of two parts, part numbers 375-0094 and 300-1455. Be sure you have both parts when your are replacing the DC-to-DC converter.

6.6.2 What to Do

1. Insert the replacement VRM DC-to-DC card into the replacement DC-to-DC converter board.

   

2. Insert the cutout end of the DC-to-DC converter board into the slots on the metal tabs in the chassis.

   Insert the DC-to-DC board into the metal slots at an angle so that the post holes on the back of the converter board align with the plastic retaining clip posts.

   

3. Lower the DC-to-DC converter onto the plastic retaining clips.

   Ensure that the other end of the DC-to-DC converter board remains in place in the metal tabs.

4. Secure the DC-to-DC converter board in place.

   Push down on the board until the plastic tabs secure the board in place.

   

5. Connect the CPU core voltage power cable to connector J0103 on the DC-to-DC converter board.

   The connector is keyed so that it installs in only one way.

6. Connect the CPU core voltage power sense cable to connector J0102 on the DC-to-DC converter board.

   The connector is keyed so that it installs in only one way.

   

6.6.3 What Next

Complete this task to reassemble the system:

• "2.7 How to Replace the System Cover"