iMac Manual
iMac (27-inch, Mid 2010) Symptom Charts — Communications 86
2010-09-09
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. (AirPort) Run the Apple System Proler and verify
that installed AirPort card supports the channel
number used by the wireless access point.
3. (AirPort) Check if the wireless access point
requires special connection and encryption
protocols.
4. (AirPort) Check for nearby sources of interference
such as microwave ovens or cordless phones. See
kBase #HT1365: AirPort: Potential source of
interference.
5. (AirPort) Check the number of users trying to
use AirPort in the area for possible network
congestion (available bandwidth).
6. (Bluetooth) If customer complaints about a
Bluetooth issue with his input device, rst use a
known-good Bluetooth input device to perform
tests with computer. Then test customer’s
Bluetooth device on known-good computer to
dene which side is creating the communication
issue. See kBase #HT1365: Airport potential
source of interference.
7. 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.