Dell Precision 330 User Manual

Page 71

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VRM

Dell Precision™ WorkStation 330 Systems Service Manual

Overview

The voltage regulator module (VRM) senses the microprocessor's voltage requirements and ensures that the correct voltage is maintained.

Removing the VRM

1. Turn off the computer and peripherals, disconnect them from their electrical outlets, wait at least 5 seconds, and then

remove the computer cover

Rotate the power supply

away from the system board.

3. Remove the VRM securing clip:

a. Press down on the two raised points of the clip's top surface to release it from the VRM connector.

b. Lift the clip away from the VRM (see the following figure).

Removing the VRM

4. Grasp the VRM by its top corners, and ease it out of its connector.

Replacing the VRM

1. Align the slot on the bottom of the new VRM with the ridge inside the connector.

2. Press the VRM straight into the connector.

3. Replace the VRM securing clip:

CAUTION:

Before you perform this procedure, see "

Precautionary Measures

NOTICE:

Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby power indicator on the

system board has turned off. To locate this indicator, see "

System Board Components

" or "

Interior Service Label