Apple MC408LL Apple Technician Guide - Page 28

Kernel Panic, System Crashes, Symptoms, Quick Check, Check, Result, Action

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Kernel Panic, System Crashes Quick Check Symptoms Kernel Panic, System Crashes • Kernel Panic on startup or desktop use. • System freeze during use. • System freeze upon wake from sleep. Quick Check 1. Isolate OS by starting up system from original Mac mini Install DVD, from the same model of computer setup in Target Disk Mode, or from compatible known-good OS on an external drive. Both AirPort and Bluetooth services are available when booted from the Install disk. 2. Ensure that all software and firmware updates for the computer have been installed to take advantage of any available bug fixes. 3. Reset SMC and PRAM to clear any stored, corrupted information. 4. Start up in Safe Mode by holding the shift key down during startup to load only required kernel extensions and disable all startup and login items. See KBase article http://support.apple.com/kb/HT1564 5. Check the panic.log, located /Library/Logs/ Panicreporter, for information in the backtrace that may give clues about which hardware driver was loading when kernel panic occurred. 6. For more information on kernel panics refer to KBase article http://support.apple.com/kb/HT1392 Deep Dive Check 1. Run the latest available service utilities, or try to run the Apple Hardware Test (with or without the Install DVD available) by pressing the D keyboard key on startup. Does the computer boot up to any of these diagnostics? Result Yes No Action Run all available tests and proceed with results. If diagnostics still boot with a kernel panic, go to step 2. Go to step 2. Code 2010-08-03 Mac mini (Mid 2010) Symptom Charts - Startup and Power 28

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Mac mini (Mid 2010) Symptom Charts — Startup and Power
28
2010-08-03
Kernel Panic, System Crashes
Quick Check
Symptoms
Quick Check
Kernel Panic, System Crashes
•
Kernel Panic on startup or
desktop use.
•
System freeze during use.
•
System freeze upon wake from
sleep.
1.
Isolate OS by starting up system from original
Mac mini Install DVD, from the same model of
computer setup in Target Disk Mode, or from
compatible known-good OS on an external drive.
Both AirPort and Bluetooth services are available
when booted from the Install disk.
2.
Ensure that all software and firmware updates
for the computer have been installed to take
advantage of any available bug fixes.
3.
Reset SMC and PRAM to clear any stored,
corrupted information.
4.
Start up in Safe Mode by holding the shift key
down during startup to
load only required kernel
extensions and disable all startup and login
items. See KBase article
5.
Check the panic.log, located /Library/Logs/
Panicreporter, for information in the backtrace
that may give clues about which hardware driver
was loading when kernel panic occurred.
6.
For more information on kernel panics refer to
KBase article
Deep Dive
Check
Result
Action
Code
1.
Run the latest available service
utilities, or try to run the Apple
Hardware Test (with or without
the Install DVD available) by
pressing the D keyboard key
on startup. Does the computer
boot up to any of these
diagnostics?
Yes
Run all available tests and
proceed with results. If
diagnostics still boot with a
kernel panic, go to step 2.
No
Go to step 2.