Apple 2009 iMac - Page 70

iMac (21.5-inch, Late 2009) Symptom Charts — Communications 70
2010-11-18
Communications
AirPort/Bluetooth Issues
Quick Check
Symptoms Quick Check
AirPort/Bluetooth Issues
• Unable to join networks or pair
devices
• AirPort card not available
• Intermittent device or
connection dropouts
• Limited wireless range
1. Verify that AirPort or Bluetooth is turned ON, and
for AirPort issues make sure that a network is
selected.
2. For AirPort, check if the wireless access point
requires special connection and encryption
protocols.
3. Check for nearby sources of interference such as
microwave ovens or cordless phones.
See kBase #HT1365: AirPort and Bluetooth:
Potential source of interference for wireless
devices and networks.
4. Check the number of users trying to use AirPort
in the area for possible network congestion
(available bandwidth).
5. Isolate potential OS issues by starting up
from original Install media for the computer, a
same-model computer in Target Disk Mode, or
compatible known-good OS on an external drive.
Both AirPort and Bluetooth services are available
when booted from Install disc.
Deep Dive
Check Result Action Code
1. Open System Proler. AirPort
is listed under Network, while
Bluetooth is listed under USB.
Verify if both AirPort and
Bluetooth cards are recognized.
Yes Install all software updates
for AirPort/Bluetooth and
re-test. If issue persists after
software update, go to step 4
for AirPort, or go to step 6 for
Bluetooth.
No Go to step 2 for AirPort.
Go to step 6 for Bluetooth.
M11
2. Reseat both AirPort cable
connection on logic board and
on AirPort card carrier ends.
Verify if AirPort card is now
listed in System Proler.
Yes Issue resolved by reaseating
AirPort cable.
No Replace AirPort cable and re-
test. Go to step 3.