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Dell OptiPlex Tower Plus 7020 - Power-supply unit

Dell OptiPlex Tower Plus 7020
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About this task
NOTE: If either the processor or the heat sink is replaced, use the thermal grease that is provided in the kit to ensure that
thermal conductivity is achieved.
The following images indicate the location of the processor fan and heat-sink assembly and provide a visual representation of
the installation procedure.
Figure 73. Installing the processor fan and heat-sink assembly (for 125 W processors)
Steps
1. Align the screw holes on the processor fan and heat-sink assembly to the screw holes on the system board.
2. Place the processor fan and heat-sink assembly on the processor.
3. In the sequential order (1 > 2 > 3 > 4) etched on the heat-sink assembly, tighten the four captive screws to secure the
processor fan and heat-sink assembly to the system board.
4. Connect the processor fan and heat-sink assembly cable to the connector (FAN CPU) on the system board.
Next steps
1. Install the side cover.
2. Follow the procedure in After working inside your computer.
Power-supply unit
Removing the power-supply unit
CAUTION: The information in this removal section is intended for authorized service technicians only.
102 Removing and installing Field Replaceable Units (FRUs)

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