Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 41

9. Check for No Backlight Condition. Power on unit. Using a lamp or bright light source, inspect for faint image, and verify that any faint image appears. Yes Logo image visible - check LVDS cable on logic board. Inspect cable for damage near clutches: . if damaged, replace display assembly and go to step 11 L09 . if cable is not damaged, run Clamshell Service Diagnostic utility and check for LCD panel presence. If not found, reseat it and retest, then go to step 11 10. Verify with known-good display assembly Connect known-good display assembly to system. No If symptom continues, go to step 10. Yes System is functioning with known-good display assembly Replace display assembly if following symptom reporting: - had no power issue L01 - had incorrect/missing colors L02 - had blank video L03 - had distorted / blurred video L04 - had vertical/horizontal lines L05 - had noise/unstable flickering L06 - had dim backlight L07 - had bad spot(s)/pixels L08 - had no backlight L09 - could not change resolution L10 No Symptoms unchanged - M03 replace logic board 11. Verify with reseated LVDS cable Yes Issue was only due to or replaced display assembly damaged display assembly or Verify that unit now has video unseated cable. and backlight. No Display cable damaged the M25 logic board. Replace logic board. 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Startup and Power Issues 41