Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 48

Battery Run Time Too Short Quick Check Symptom Battery Run Time Too Short Battery runs out of power very quickly (less than two hours) Quick Check 1. Check if the battery is covered under a repair extension program. Use the "Portable Computer Battery Screening Process for Apple Service Providers" (Knowledge Base CP165). 2. Verify no applications have runaway processes with the CPU. See "Runaway applications can shorten battery runtime" (Knowedge Base TS1473). 3. Use "Apple Portables: Battery Life" (Knowledge Base HT1466) to screen for short battery run time. If replaced for run time too short, regardless of warranty coverage, use symptom code P09 if replaced. Won't Run on Power Adapter Alone Unlikely cause: RAM, display assembly, hard drive, optical drive, top case, speakers, camera, microphone Quick Check Symptom Won't Run on Power Adapter Alone Runs on battery but not on power adapter only. Quick Check 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. With the battery removed, unplug AC adapter, reset SMC by holding the power button for 5 seconds 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Startup and Power Issues 48