Dell Studio Desktop D540 (Late 2008) - Manual (Page 18)

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Replacing Fans
Dell Studio™ 540 Service Manual
Replacing the Chassis Fan
Replacing the Processor Fan and Heat Sink Assembly
Replacing the Chassis Fan
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Replacing the Computer Cover ).
3. Disconnect the chassis fan cable from the system board connector (SYS_FAN1).
4. Remove the four screws securing the chassis fan.
5. Lift the chassis fan away from the computer.
6. To replace the chassis fan, slide it in place towards the back of the computer.
7. Replace the four screws to secure the chassis fan.
8. Connect the chassis fan cable to the system board connector (SYS_FAN1).
9. Replace the computer cover (see Replacing the Computer Cover ).
Replacing the Processor Fan and Heat Sink Assembly
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Replacing the Computer Cover ).
CAUTION: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.
CAUTION: To guard against likelihood of electric shock, laceration by moving fan blades or other unexpected injuries, always unplug your
computer from the electrical outlet before removing the cover.
NOTICE: Do not touch the fan blades when you are removing the chassis fan. This could damage the fan.
1 screws (4) 2 chassis fan
CAUTION: Despite having a plastic shield, the heat sink fan assembly may be very hot during normal operation. Be sure that it has had sufficient
time to cool before you touch it.
NOTICE: Do not touch the fan blades when you are removing the processor fan and heat sink assembly. This could damage the fan.
NOTICE: The processor fan with the heat sink is one single unit. Do not try to remove the fan separately.