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

2010-08-05
Won’t Run on Power Adapter Alone
Unlikely cause: RAM, display assembly, hard drive, optical drive, top case, speakers, camera,
microphone
Quick Check
Symptom Quick Check
Won’t Run on Power Adapter
Alone
Runs on battery but not on power
adapter only.
Deep Dive
1. Verify proper wattage adapter is being used.
2. Check for dirty or stuck pins on the MagSafe
connectors, both on the adapter and the
computer.
3. Connect the AC adapter to known-good power
source.
4. Verify power cord or plug is properly attached to
AC adapter and MagSafe cable is not damaged.
5. Reset SMC by pressing the (left) Shift-Control-
Option keys along with the power button once.
Check Result Action Code
1. With battery removed, verify
if a known-good AC adapter
starts up ,runs the system and
shows MagSafe LED status.
2. Verify if a known-good power
adapter’s LED light up either
green or amber.
3. Disconnect battery and verify if
the unit also runs on a knowngood
power adapter.
Yes Confirm user’s AC adapter as
bad and replace.
No Verify MagSafe board cable
seating to logic board. Go to
step 2
Yes SMC on logic board senses AC
power adapter. Go to step 3
No Replace the MagSafe board.
Go to step 3.
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Startup and Power Issues 44
P14
Yes Issued resolved. X03
No Replace logic board.. M01