 Apple Technician Guide MacBook Pro (15-inch, Mid ... - tim.id.au

2010-08-05
2. Booting from known-good
bootable drive , verify that
shutdown issue still happens.
3. Power related shutdowns :
verify that shutdown issue
can ONLY be reproduced with
user’s battery and AC adapter.
4. Reset SMC and PRAM, then
verify if shutdown symptoms
does not happen anymore.
5. Check system running on
battery only. Use known-good
charged battery.
Verify if shutdown/reset/sleep
issues disappear when knowngood
battery is used without
AC adapter.
6. Check with known-good AC
adapter source only
Remove battery and use
known-good AC adapter.
Verify if the shutdown/reset/
sleep issues disappear with
known-good adapter.
Yes Go to Power related
shutdowns on step 3
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 Intermittent power issue
means checking user’s
AC cable for intermittent
connection, checking user’s
battery and AC adapter
health,
No Issue also happens with
known-good battery and AC
adapter. Go to step 4
Yes Shutdown cause was related
to SMC or Pram settings or
corruption, and was resolved
by reverting them to default
settings.
No Shutdown event still occurs.
Go to step 5.
Yes Recharge customer battery
and retest. Check for
customer battery health
in Apple System Profiler or
run Battery & Adapter Test
utility, and replace battery if
its health is reported bad or
consumed.
No Symptoms unchanged - Go
to step 6
Yes Faulty user’s AC adapter.
Replace user’s AC adapter if
AC cable and duckhead were
confirmed good.
No Symptoms unchanged - Go to
Hardware-related shutdowns
on step 7
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MacBook Pro (15-inch, Mid 2010) Symptom Charts — Startup and Power Issues 33
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