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NOTE: When replacing the system board, you must also change the chassis serial number in the
BIOS.
Rear Fan
Description Spare part number
Rear fan 605155-001
The rear fan is secured to the rear right corner of the chassis. You must remove the system board before
you can remove the rear fan.
1.
Prepare the computer for disassembly (
Preparation for Disassembly on page 210).
2. Remove the computer access panel (
Access Panel on page 211).
3. Remove the optical drive (
Removing the Optical Drive on page 220).
4. Remove the front fan (
Front Fan on page 219).
5. Remove the hard drive (
Hard Drive on page 223).
6. Remove the optical drive rail (
Optical Drive Rail on page 227).
7. Remove the heat sink (
Heat sink on page 231).
8. Remove the system board (
System Board on page 238).
9. From the outside of the chassis, remove the four Phillips screws that secure the fan to the chassis.
Figure 9-32 Removing the rear fan screws
240 Chapter 9 Removal and Replacement Procedures – Ultra-Slim Desktop (USDT) Chassis