Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 70

Deep Dive: Distorted/Blurred Image Check Result 1. Sample image illustrates loss of Yes LVDS data signals to LCD or a defective LCD panel. Inspect & reseat LVDS cable connection No looking for damaged or bent pins. Is image restored with reseated cable connection? 2. Substitute a known good Yes display clamshell to test logic board video output. Is normal No video restored? Action Code Issue due to loose connection. Display issue resolved. Go to step 2. If logic board connector M24 damage, replace logic board. Replace display assembly. L04 Replace logic board. M04 Deep Dive: Pixel Anomalies Check Result 1. Determine if "defects" are dust/ Yes debris on surface of glass panel. No 2. Determine if bright pixel Yes defects exceed the acceptable number. See Display Issue: Pixel Anomalies. No 3. Determine if dark pixel defects Yes exceed the acceptable number. See Display Issue: Pixel Anomalies. No 4. Determine if the combination Yes of bright/dark pixel defects exceed the acceptable number. See No Display Issue: Pixel Anomalies. Action Clean glass panel. Go to step 2. Replace display assembly. Code L08 LCD meets bright pixel defect specifications. Go to step 3. Replace display assembly. L08 LCD meets dark pixel defect specifications. Go to step 4. Replace display assembly. L08 Explain to user that LCD is within specifications. Do not replace display assembly. 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Display 70