Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 36

Deep Dive Check 1. Activity related shutdowns: Reset SMC and PRAM and verify that shutdown issue still happens. Result Yes No 2. Booting from known-good Yes bootable drive , verify that shutdown issue still happens. No 3. Power related shutdowns : Yes verify that shutdown issue can ONLY be reproduced with user's battery and AC adapter. No 4. Reset SMC and PRAM, then Yes verify if shutdown symptoms does not happen anymore. No Action Code Check with known-good bootable drive: go to step 2 Shutdown cause was related to SMC or Pram programmed shutdown settings or corruption, and was resolved by reverting them to default settings. Go to Power related shutdowns on step 3 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. Intermittent power issue means checking user's AC cable for intermittent connection, checking user's battery and AC adapter health, Issue also happens with known-good battery and AC adapter. Go to step 4 Shutdown cause was related to SMC or Pram settings or corruption, and was resolved by reverting them to default settings. Shutdown event still occurs. Go to step 5. 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Startup and Power Issues 36