Apple Upper Fans, iMac G5, 17-inch User Manual

034-3261 Rev. A

iMac G5
Upper Fans, iMac G5, 17-inch
Replacement Instructions
Follow the instructions in this sheet carefully. Failure to follow these instructions could
damage your equipment and void its warranty.
Note: Online instructions are available at http://www.apple.com/support/doityourself/.
Tools Required
• Use the enclosed tool; Phillips #2 screwdriver or Torx-8 depending upon what type of
screws are present. Note: Torx screws are star-shaped as shown below.
• Screw tray or equivalent to hold the screws
Part Location
Torx screw head

Apple Upper Fans, iMac G5, 17-inch Specifications

General

Compatibility	iMac G5 17-inch
Graphics	NVIDIA GeForce FX 5200 Ultra
Operating System	Mac OS X 10.3 Panther
Processor	1.6GHz PowerPC G5
Memory	256MB DDR SDRAM (PC3200)
Storage	80GB Serial ATA
Optical Drive	Slot-loading Combo Drive (DVD-ROM/CD-RW)
Ports	Two FireWire 400, Three USB 2.0
Dimensions	16.9 x 16.9 x 6.8 inches (42.9 x 42.9 x 17.3 cm)

Summary

Upper Fans, iMac G5, 17-inch Replacement Instructions

Tools Required

Lists required tools like screwdrivers and screw trays for fan replacement.

Part Location

Diagram showing the location of the upper fans within the iMac G5.

Important Things to Know

Key Precautions and Warnings

Advises on screw types, grounding, and keeping liquids away from the work area.

Opening the Computer

Initial Power Down and Disconnection

Instructs to shut down, disconnect all cables, and unplug the power cord.

Positioning the Device for Access

Details placing the computer face down on a soft, clean towel or cloth.

Locating and Loosening Case Screws

Identifies and loosens three captive case screws to begin disassembly.

Removing the Upper Fans

Static Discharge Procedure

Explains grounding oneself to discharge static electricity before touching components.

Locating and Removing Fan Covers

Identifies fan covers and removes screws to lift them off the computer.

Disconnecting Fan Cables and Loosening Screws

Disconnects fan cables from the logic board and loosens fan mounting screws.

Removing Fans and Transferring Grommet Screws

Lifts fans out and removes screws from rubber grommets for reuse.

Installing the Replacement Fans

Connecting Fan Cables and Securing Fans

Routes and connects fan cables, then positions and tightens fan mounting screws.

Securing the Larger Fan and Routing Cables

Tucks video cable and lowers the larger fan, aligning screws with mounting holes.

Final Fan Cable Connection and Cover Reassembly

Routes fan cable, replaces fan cover screws, and replaces the back cover.

Closing the Computer

Aligning and Securing the Back Cover

Mates cover slots with housing tabs and pushes together to lower the back cover.

Tightening Case Screws and Powering On

Tightens captive case screws, reconnects power cord, and turns on the computer.