Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 29

2010-06-15 2. Reset SMC., and verify unit Yes starts. (Alternative hardware SMC reset can be forced by shorting R5001 pads on logic board or removing all system power for 1 minute.) Can No system start up after SMC reset? 3. Will system power up with Yes 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. No 4. Customer battery may be run Yes down, or not recognized. Verify customer battery in a known-good system is recognized and accepting a charge. Confirm customer battery is not consumed nor No defective. 5. Inspect battery cable Yes 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 No battery cable inspections or replacement? 6. Inspect MagSafe power Yes adapter. Verify AC adapter is correct wattage, compatible with product and works on No known-good computer. Corrupt SMC state preventing power on. Issue resolved with SMC reset. Go to step 3 System can start up from P11 known-good battery -- customer battery possibly at fault or needs to be charged. Continue to verify customer battery then AC adapter use and battery charging. Go to step 4. System will not power using known-good battery only. Go to step 5 Battery is recognized, charging and health is good. Return to test unit with customer battery and AC adapter power. Go to step 6. Replace customer battery P10 for not charging (P10) or not or recognized (P11). Customer P11 to purchase a replacement battery if consumed. Battery power restored, return to test unit with customer battery and AC adapter power. Go to step 6. Logic board is expected to power on with battery only. Inspect and test power on key. Go to step 10. Power adapter is good, go to step 7 Release stuck pin or replace P14 adapter due to wire damage, not working or burned pins MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Startup and Power Issues 29