Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 28

2010-06-15 Symptom Charts Follow the steps in the order indicated below. If an action resolves the issue, retest the system to verify. Note: A compilation of Quick Check tables is available at http://service.info.apple.com/QRS/ en/quickreference.pdf Startup and Power Issues No Power Unlikely cause: display assembly, speakers, optical drive, hard drive Quick Check Symptom No Power / Dead Unit • No power • No image • No startup chime • No fan or hard drive spin • No reset sound from optical drive • No sleep LED activity • No light if Caps Lock pressed • Non-operational Quick Check 1. Verify AC power presence with MagSafe LED indicating on or charge state. 2. Verify battery status as being partly charged, charging with AC power. 3. If battery is not recognized, remove battery and try to run from AC only. 4. Reset SMC. 5. Verify with known-good battery. Deep Dive Check Result 1. Isolate peripherals as cause. Yes Disconnect all peripherals and external devices and verify unit starts. No Action Code Suspect peripherals as cause. Reconnect each one at a time, verifying unit operation as external device is reinstalled. Go to step 2 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Startup and Power Issues 28