Apple MC408LL Apple Technician Guide - Page 26

Reset SMC and PRAM and, Reinstall Mac OS on customer

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2. Activity related shutdowns: Reset SMC and PRAM and verify that shutdown issue still happens. 3. Boot from a known-good bootable drive (external bootable drive or similar system set as FireWire Target mode) , verify that shutdown issue still happens. 4. Hardware-related shutdowns: Run the latest available service diagnostics and verify if a sensor failure is reported. Yes Check with booting from known-good bootable drive: go to step 3 No Shutdown cause was related to SMC or Pram programmed shutdown settings or corruption, and was resolved by reverting them to default settings. Yes Go to step 4 No Shutdown events do not happen on known-good OS. Reinstall Mac OS on customer hard drive, update OS with latest version and check if any firmware update is available. Yes -If a Temperature or a Fan sensor failure is reported, go to step 5 -If a Voltage or a Current sensor failure is reported, M23 replace logic board. No Setup ASD to loop test suite for burn in tests and go to step 5. If no failure is found after burn in tests, return unit to customer for no failure found. 2010-08-03 Mac mini (Mid 2010) Symptom Charts - Startup and Power 26

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Mac mini (Mid 2010) Symptom Charts — Startup and Power
26
2010-08-03
2.
Activity related shutdowns:
Reset SMC and PRAM and
verify that shutdown issue still
happens.
Yes
Check with booting from
known-good bootable drive:
go to step 3
No
Shutdown cause was related
to SMC or Pram programmed
shutdown settings or
corruption, and was resolved
by reverting them to default
settings.
3.
Boot from a known-good
bootable drive (external
bootable drive or similar
system set as FireWire Target
mode) , verify that shutdown
issue still happens.
Yes
Go to step 4
No
Shutdown events do not
happen on known-good OS.
Reinstall Mac OS on customer
hard drive,
update OS with
latest version and check if any
firmware update is available.
4.
Hardware-related shutdowns:
Run the latest available service
diagnostics and verify if a
sensor failure is reported.
Yes
-If a Temperature or a Fan
sensor failure is reported, go
to step 5
-If a Voltage or a Current
sensor failure is reported,
replace logic board.
M23
No
Setup ASD to loop test suite
for burn in tests and go to
step 5. If no failure is found
after burn in tests, return unit
to customer for no failure
found.