 Apple Technician Guide MacBook Pro (15-inch, Mid ... - tim.id.au

2010-08-05
No/Poor Wireless Signal
Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera,
microphone, top case
Quick Check
Symptom Quick Check
No/Poor Wireless Signal
• Unable to find networks
• Intermittent connection
dropouts
• Slow transfer speeds
Deep Dive
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
(10.6.x). Attempt to connect to base station.
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 that all AirPort software
and firmware updates have
been applied. Ensure base
station is not using MAC
address filtering or creating a
hidden network. Go to step 2..
No If AirPort/Bluetooth card is
not detected, go to previous
Symptom table - AirPort/
Bluetooth - Defective wireless
devices.
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Communications 55