Apple MC408LL Apple Technician Guide - Page 40

AirPort/Bluetooth Card Kernel Panic, Symptoms, Quick Check, Panic, Check, Result, Action

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2010-08-03 AirPort/Bluetooth Card Kernel Panic Quick Check Symptoms AirPort/Bluetooth Card Kernel Panic • Kernel Panic on startup • Kernel Panic or freezing while attempting to connect to Wi-Fi networks • Kernel Panic while transferring data on Wi-Fi networks Quick Check 1. Isolate OS by starting up from original Install media for the computer, from same model computer setup in Target Disk Mode, or from compatible known good up-to date Mac OS X 10.6/X loaded on an external drive. Note: AirPort and Bluetooth services are available when booted from the Install disk. 2. Ensure that all software and firmware updates for the computer and AirPort been installed. Deep Dive Check 1. Remove bottom cover, disconnect AirPort antenna and remove shield, disconnect and remove fan and cowling, then disconnect the following cables from logic board before being able to extract it: HDD, ODD/HDD, Ambient sensor, HD sensor, ODD/HD sensor, IR/ LED cable, Power supply cable. Disconnect AirPort/Bluetooth flex cable from logic board. Reconnect power supply and hard drive cable and retest. Does computer start without kernel panic? 2. With replacement AirPort/ Bluetooth flex cable installed, does computer start without kernel panic? 3. With replacement AirPort/ Bluetooth card installed, does computer start without kernel panic? Result Yes No Action Possible logic board issue. Go to Kernel Panic/System crashes symptom. Reseat AirPort/Bluetooth flex cable to the logic board and to the AirPort/Bluetooth card and retest. If problem persists, replace AirPort/Bluetooth flex cable. Go to step 2 Yes AirPort/Bluetooth flex cable issue. Issue resolved. No Replace AirPort/Bluetooth card. Go to step 3. Yes AirPort/Bluetooth card issue. Issue resolved. No Possible logic board issue. Go to Kernel Panic/System crashes symptom. Code N13 Mac mini (Mid 2010) Symptom Charts - Communications 40

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Mac mini (Mid 2010) Symptom Charts — Communications
40
2010-08-03
AirPort/Bluetooth Card Kernel Panic
Quick Check
Symptoms
Quick Check
AirPort/Bluetooth Card Kernel
Panic
•
Kernel Panic on startup
•
Kernel Panic or freezing while
attempting to connect to Wi-Fi
networks
•
Kernel Panic while transferring
data on Wi-Fi networks
1.
Isolate OS by starting up from original Install
media for the computer, from same model
computer setup in Target Disk Mode, or from
compatible known good up-to date Mac OS X
10.6/X loaded on an external drive.
Note: AirPort and Bluetooth services are available
when booted from the Install disk.
2.
Ensure that all software and firmware updates for
the computer and AirPort been installed.
Deep Dive
Check
Result
Action
Code
1.
Remove bottom cover,
disconnect AirPort antenna
and remove shield, disconnect
and remove fan and cowling,
then disconnect the following
cables from logic board before
being able to extract it: HDD,
ODD/HDD, Ambient sensor,
HD sensor, ODD/HD sensor, IR/
LED cable, Power supply cable.
Disconnect AirPort/Bluetooth
flex cable from logic board.
Reconnect power supply and
hard drive cable and retest.
Does computer start without
kernel panic?
Yes
Possible logic board issue.
Go to
Kernel Panic/System
crashes
symptom.
No
Reseat AirPort/Bluetooth flex
cable to the logic board and
to the AirPort/Bluetooth card
and retest. If problem persists,
replace AirPort/Bluetooth flex
cable. Go to step 2
2.
With replacement AirPort/
Bluetooth flex cable installed,
does computer start without
kernel panic?
Yes
AirPort/Bluetooth flex cable
issue. Issue resolved.
No
Replace AirPort/Bluetooth
card. Go to step 3.
N13
3.
With replacement AirPort/
Bluetooth card installed, does
computer start without kernel
panic?
Yes
AirPort/Bluetooth card issue.
Issue resolved.
No
Possible logic board issue.
Go to
Kernel Panic/System
crashes
symptom.