Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 59

No/Poor Wireless Signal

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2010-06-15 No/Poor Wireless Signal Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera, microphone, top case Caution: When testing an AirPort card connection, wait at least 5 seconds after shutdown before touching the camera cable connection to the logic board. Waiting less than that could damage the AirPort card. Quick Check Symptom No/Poor Wireless Signal • Unable to find networks • Intermittent connection dropouts • Slow transfer speeds Quick Check 1. Check for nearby interference sources in the 2.4/5GHz range such as microwave ovens and cordless phones (Knowledge Base HT1365). 2. Check that computer is within base station range - move closer to base station. 3. Base station checks: a. Base station is not set to low-power transmission mode b. Base station is not using unsupported connection and encryption protocols c. Check for possible Wi-Fi channel overlap (nearby base stations using adjacent channel) 4. Isolate OS by booting from original install media (10.5.x). Attempt to connect to base station. Deep Dive Check Result Action Code 1. Open System Profiler, check to Yes see if AirPort card is recognized under Network: AirPort Card. Use Software Update to make sure all AirPort software and firmware updates have been applied. Ensure base station is not using MAC address filtering or creating a hidden network. No If card is not detected, go to M11 - AirPort/Bluetooth - Defective wireless devices. MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Communications 59

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MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications
59
2010-06-15
No/Poor Wireless Signal
Unlikely cause:
power adapter, battery, speakers, optical drive, hard drive, fan, camera,
microphone, top case
Caution:
When testing an AirPort card connection, wait at least 5 seconds after shutdown
before touching the camera cable connection to the logic board. Waiting less than that could
damage the AirPort card.
Quick Check
Symptom
Quick Check
No/Poor Wireless Signal
•
Unable to find networks
•
Intermittent connection
dropouts
•
Slow transfer speeds
1.
Check for nearby interference sources in the
2.4/5GHz range such as microwave ovens and
cordless phones (
Knowledge Base HT1365
).
2.
Check that computer is within base station range
– move closer to base station.
3.
Base station checks:
a.
Base station is not set to low-power
transmission mode
b.
Base station is not using unsupported
connection and encryption protocols
c.
Check for possible Wi-Fi channel overlap
(nearby base stations using adjacent channel)
4.
Isolate OS by booting from original install media
(10.5.x). Attempt to connect to base station.
Deep Dive
Check
Result
Action
Code
1.
Open System Profiler, check to
see if AirPort card is recognized
under Network: AirPort Card.
Yes
Use Software Update to make
sure all AirPort software and
firmware updates have been
applied. Ensure base station
is not using MAC address
filtering or creating a hidden
network.
No
If card is not detected, go
to M11 - AirPort/Bluetooth -
Defective wireless devices.