Apple Mac mini (Mid 2011 Technical Information Seite 29

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Mac mini (Mid 2011) Symptom Charts — Startup and Power 29
2011-07-21
- to check for fan operation,
- to check for cleanliness of the heat sink ns and the air ows,
- to check for correct seating of the heat sink on logic board and presence of adequate thermal
material.
Deep Dive
Check Result Action Code
1. Power related shutdown :
Check with known-good AC
cable.
Verify if the shutdown issues
disappear with known-good
AC cable.
Yes Faulty users AC cable. Replace
users AC cable.
X03
No Symptoms unchanged - Go
to step 2
2. Activity related shutdowns:
Reset SMC and PRAM and
verify that shutdown issue still
happens.
Yes Check with booting from
known-good bootable device:
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. Connect and try to start up
from known-good original
system media, like an up-to-
date, bootable OS X volume or
similar system connected and
setup in Target Disk Mode, and
press the Option (alt) key on
startup to select and attempt
to boot from it. Does the
shutdown issue still happens?
Yes Go to step 4
No Shutdown events do not
happen on known-good OS.
Reinstall Mac OS on customer
drive, update OS with latest
version and check if any
rmware 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.
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