Instruction/ maintenance manual of the product Power Mac 073-0800 Apple
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073-0800 Re v . A Power Mac G4 Lower Fan Replacement Instructions F ollow the instructions in this sheet carefully . F ailure to f ollo w these instructions could damage your equipment and v oid its w arranty . Note: Written and video instructions cov ering customer-installable par ts are av ailab le at http://www .
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 2 6. T ouch the metal PCI access cov ers on the bac k of the computer . (Figure 1) Important: To avoid electrostatic discharge, always ground yourself by touching the port access covers before you touch any parts or install any components inside the computer.
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 3 7. Unplug the pow er cord. (Figure 2) W arning: Never plug in the power cor d or turn on y our computer unless all of its internal and external parts are in place and it is closed. Operating the computer when it is open or missing parts can damage your computer or cause injury .
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 4 Removing the Installed F an 1. Slide the back panel off the optical driv e carrier . (Figure 3) Figure 3 2.
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 5 3. Slide the carrier back and rotate it so that y ou can reach the drive cab les. 4. Disconnect the drive data and po wer cab les (P6 and P7) from the back of the optical drive(s) and remo v e the carrier from the computer .
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 6 5. Disconnect the A T A r ibbon cab le from the logic board. (Figure 6) Figure 6 6. Disconnect the second A T A r ibbon cab le from the logic board and f old it bac k to e xpose the low er f an cab le connector .
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 7 7. Caution: The locking tab on the f an connector is delicate. If the locking tab breaks, the connector should still be usable .
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 8 Installing the Replacement F an 1. Using needlenose pliers or a flat-blade scre wdriv er , remov e the f our plastic pegs from the detachable finger guard and f an.
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 9 3. Install the replacement f an as f ollows: Replacement Caution: Position the replacement fan as shown so that the fan cable routes along the bottom of the fan, and the cable connector faces the logic board.
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 10 5. Reinstall the optical drive carrier as f ollows: Replacement Note: Before sliding the carrier back onto the optical drive shelf, make sure the power cable bundle at the side panel are routed in the recessed channel.
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 11 Connect the cables to the optical drive. (Figure 15) Figure 15.
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 12 Replacement Note: Before sliding the rear panel back onto the carrier, make sure the top lip of the panel engages with the top edge of the drive carrier. (Figure 16) Caution: Be careful not to pinch the power cable between the panel and the carrier.
Power Mac G4 (Mirrored Drive Doors) Lower Fan - 13 Closing the Computer 1. Check that the scre ws remo v ed from the computer hav e been reinstalled and that all inter nal cab les are connected. 2. Raise the side access panel, lift the latch, and press the panel against the case until it snaps securely into place.
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