MacBook Pro (13-inch) Symptom Charts — Startup and Power Issues 34
2010-09-14
2. Reset SMC and verify unit
starts. (Alternative hardware
SMC reset can be forced by
disconnecting for 1 minute
AC and battery to remove all
system power.) Can system
start up after SMC reset?
Yes Corrupt SMC state preventing
power on. Issue resolved with
SMC reset.
No Go to step 3.
3. Will system power up with
battery only? Check battery
level LED indicator for status
of battery charge or battery
use error. Inspect battery
connector for burn marks or
damaged pins if substituting a
known-good battery to verify
starting on battery.
Yes System can start up from
known-good battery -- user
battery possibly at fault
or needs to be charged.
Continue to verify user
battery then AC adapter use
and battery charging.
Go to step 4.
P11
No System will not power using
known-good battery only.
Go to step 5
4. User battery may be run down,
or not recognized.
Verify user battery in a known-
good system is recognized and
accepting a charge. Conrm
user battery is not consumed
nor defective.
Yes Battery is recognized,
charging and health is good.
Return to test unit with user
battery and AC adapter
power. Go to step 6.
No Replace user battery for
not charging (P10) or not
recognized (P11). User to
purchase a replacement
battery if consumed.
P10 or
P11
5. Inspect battery cable
connection at logic board and
reseat if necessary. Replace
cable if found damage or
burned. Can the system power
on from a charged battery with
battery cable inspections or
replacement?
Yes Battery power restored, return
to test unit with user battery
and AC adapter power.
Go to step 6.
No Logic board is expected
to power on with battery
only. Inspect and test power
button. Go to step 10.
6. Inspect MagSafe power
adapter. Verify AC adapter is
correct wattage, compatible
with product and works on
known-good computer.
Yes Power adapter is good.
Go to step 7.
No Release stuck pin or replace
adapter due to wire damage,
not working or burned pins.
P14
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