iMac G5 (20-inch iSight) Troubleshooting — Symptom Charts 166
AirPort/Bluetooth

Not able to connect wirelessly with AirPort or Bluetooth

From the Apple menu, choose About this Mac. 1.
Click on More Info. System Proler should open.2.
In System Proler, in the column on the left, look under Hardware for a line called “AirPort 3.
Card”. Select that line.
Does the section to the right say “No Information Found”? 4.
Yes: The computer doesn’t realize it has an AirPort/Bluetooth combo card installed. Go to
step. 5
No: The iMac recognizes that it has an AirPort/Bluetooth combo card installed. Go to step 6.
Remove the front bezel, lower EMI shield, and two combo card mounting screws. and reseat 5.
the AirPort/Bluetooth combo card. Re-install the two combo card mounting screws and
check System Proler again to see if the computer sees the AirPort/Bluetooth combo card.
Does it recognize the card now?
Yes: Problem solved. Replace the lower EMI shield and front bezel and re-test the system to
verify that the original symtpom is resolved.
No: Replace the AirPort/Bluetooth combo card. Refer to the Take Apart - Logic board
procedure for replacement instructions. If the issue persists after replacing the AirPort/
Bluetooth card, replace the logic board..
Now that we know the iMac recognizes the AirPort/Bluetooth combo card, check the 6.
antenna. If the antenna is not plugged in all the way, you may have very short AirPort/
Bluetooth range.
Remove the access door, front bezel, lower EMI shield, and right speaker, and the two AirPort/7.
Bluetooth combo card mounting screws . Disconnect the card, turn it over and reconnect the
antenna cable connectors to the combo card. Make sure the antenna leads are rmly seated.
Replace the card and other components and re-test.
If the antenna leads are plugged in properly and the AirPort/Bluetooth combo card is 8.
recognized but the problem persists, there are a number of other things that could cause
issues with wireless networking. Refer to Knowledge Base document 106858 for more
networking information.
Replace the AirPort/Bluetooth combo card. Refer to Take Apart/Logic Board.9.
Replace the antenna. Refer to Take Apart/Wireless Antenna.10.
Replace the logic board. Refer to Take Apart/Logic Board.11.