Apple MC408LL Apple Technician Guide - Page 71

FireWire Devices Not Recognized, Symptoms, Quick Check

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2010-08-03 2. Insert headphones jack into Yes Issue no longer present. audio out jack , them remove Return system to customer. it and verify that external display audio out port becomes No Go to step 3. available in System preferences Sound Output, and sound can be played on the external display speakers. 3. Disconnect and reconnect HDMI /Mini DisplayPort cables from computer, and verify whether external display audio out becomes available in System preferences Sound Output, and sound can be played on the external display speakers. Yes Issue no longer present. Return system to customer. No Go to step 4 4. Boot system from this model Yes Replace logic board M09 of Mac mini Install DVD, from a similar Mac mini setup as No Known good boot volume FireWire Target Disk mode, works OK. Troubleshoot for or from another bootable software related issue. Isolate volume with an up to date whether issue is application system software. Verify whether specific or whether possible external audio issue still occurs. operating system conflict. Make sure user data backed up before removing or reinstalling software. FireWire Devices Not Recognized Quick Check Symptoms FireWire Devices Not Recognized • FireWire external drive not recognized • FireWire printer not recognized Quick Check 1. For external FireWire drives, make sure any external power source is plugged in and operating to isolate a power issue with the device. 2. Test with a known good FireWire device to isolate a failed peripheral issue. 3. Test with a known good FireWire cable to isolate a FireWire cable issue. 4. Ensure that all available Software Updates have been applied to the computer for access to the latest bug fixes. Mac mini (Mid 2010) Symptom Charts - Input/Output Devices 71

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Mac mini (Mid 2010) Symptom Charts — Input/Output Devices
71
2010-08-03
2.
Insert headphones jack into
audio out jack , them remove
it and verify that external
display audio out port becomes
available in System preferences
Sound Output, and sound
can be played on the external
display speakers.
Yes
Issue no longer present.
Return system to customer.
No
Go to step 3.
3.
Disconnect and reconnect
HDMI /Mini DisplayPort cables
from computer, and verify
whether external display
audio out becomes available
in System preferences Sound
Output, and sound can be
played on the external display
speakers.
Yes
Issue no longer present.
Return system to customer.
No
Go to step 4
4.
Boot system from this model
of Mac mini Install DVD,
from
a similar Mac mini setup as
FireWire Target Disk mode,
or from another bootable
volume with an up to date
system software. Verify whether
external audio issue still occurs.
Yes
Replace logic board
M09
No
Known good boot volume
works OK. Troubleshoot for
software related issue. Isolate
whether issue is application
specific or whether possible
operating system conflict.
Make sure user data backed
up before removing or
reinstalling software.
FireWire Devices Not Recognized
Quick Check
Symptoms
Quick Check
FireWire Devices Not Recognized
•
FireWire external drive not
recognized
•
FireWire printer not recognized
1.
For external FireWire drives, make sure any
external power source is plugged in and
operating to isolate a power issue with the
device.
2.
Test with a known good FireWire device to isolate
a failed peripheral issue.
3.
Test with a known good FireWire cable to isolate
a FireWire cable issue.
4.
Ensure that all available Software Updates have
been applied to the computer for access to the
latest bug fixes.