Apple MacBook Pro 13 inch - Page 52

MacBook Pro (13-inch) Symptom Charts — Startup and Power Issues 52
2010-09-14
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.
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.
Deep Dive
Check Result Action Code
1. With battery removed, will a
known-good AC adapter start
up and run the system and
show MagSafe LED status?
Yes Conrm user’s AC adapter as
bad and replace.
P14
No Verify MagSafe board cable
seating to logic board.
Go to step 2.
2. Does a known-good power
adapter’s LED light up either
green or orange/amber?
Yes SMC on logic board senses AC
power adapter. Go to step 3
No Replace the MagSafe board.
Go to step 3.
3. Does the unit run on known-
good power adapter alone?
Yes Issued resolved. X03
No Replace logic board. M01