Apple MC408LL Apple Technician Guide - Page 77

Internal USB. Go to step 3, computer. Did Bluetooth

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3. Are known good mouse and keyboard recognized? Yes Test original mouse and keyboard. Replace if still not recognized. Go to step 5 No External USB ports not functioning. Replace logic board. 4. With no USB devices connected, restart the computer. Did Bluetooth Mouse Setup assistant launch after startup? Yes Bluetooth detected via Internal USB. Go to step 3 No Bluetooth not recognized M15 via internal USB. Internal and external USB not functioning. Replace logic board. 5. With known good mouse and keyboard working, test other USB peripheral in question (USB external drive or printer, etc.). Is the device recognized via Apple System Profiler under USB? Yes Device recognized. Test in all USB ports to ensure all USB ports working as expected. Replace logic board for any port failures. No Device may require more power than supplied by USB ports. Try powered USB hub. Go to step 6 6. Does powered USB hub resolve Yes Test device on another issue? computer of the same make and model. If another computer does not require a powered USB hub to allow functionality, replace the logic board No Test device on another computer of the same make and model. If another computer does not recognize the device, replace the device 2010-08-03 Mac mini (Mid 2010) Symptom Charts - Input/Output Devices 77

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Mac mini (Mid 2010) Symptom Charts — Input/Output Devices
77
2010-08-03
3.
Are known good mouse and
keyboard recognized?
Yes
Test original mouse and
keyboard. Replace if still not
recognized. Go to step 5
No
External USB ports not
functioning. Replace logic
board.
4.
With no USB devices
connected, restart the
computer. Did Bluetooth
Mouse Setup assistant launch
after startup?
Yes
Bluetooth detected via
Internal USB. Go to step 3
No
Bluetooth not recognized
via internal USB. Internal and
external USB not functioning.
Replace logic board.
M15
5.
With known good mouse and
keyboard working, test other
USB peripheral in question
(USB external drive or printer,
etc.). Is the device recognized
via Apple System Profiler under
USB?
Yes
Device recognized. Test in all
USB ports to ensure all USB
ports working as expected.
Replace logic board for any
port failures.
No
Device may require more
power than supplied by USB
ports. Try powered USB hub.
Go to step 6
6.
Does powered USB hub resolve
issue?
Yes
Test device on another
computer of the same
make and model. If another
computer does not require
a powered USB hub to allow
functionality, replace the logic
board
No
Test device on another
computer of the same
make and model. If another
computer does not recognize
the device, replace the device