Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 69

Deep Dive: Incorrect/Missing Colors Check Result 1. Verify display is listed in the Yes System Profiler's Graphics/ Displays device tree. No 2. Verify System Preferences Yes Display Profile is valid for display being tested. Color profile should be set to Color LCD, user may have created an No off-color calibration setting. 3. Verify that the glass panel is Yes free of contaminants. No 4. Run Clamshell Service Yes Diagnostic utility and check for LCD panel presence. If not found, reseat and verify LVDS No cable is secure to the logic board. Are colors restored? Action Code This ensures color profile can be matched with LCD. Go to step 2. Go to N09. If display profile is valid and the colors are still incorrect or missing go to step 3. Set System Preferences: Displays: Color to Color LCD and retest. Go to step 4. Clean glass panel using approved method. Retest. Loose cable connection. Issue resolved. Go to step 5. 5. Set desktop pattern in System Yes Preferences to 'Solid Gray Light'. Verify if incorrect/missing color issue affects entire display. No 6. Set up display under test side Yes by side with another known good display showing the same image. Verify if issue No is noticeably worse on the display being tested. 7. Substitute a known-good Yes display assembly to test logic board video output. Is normal No video restored? Test a known-good display, go to step 7. Go to step 6. Test a known-good display, go L02 to step 7 Small variations in color uniformity are normal and do not warrant replacement or repair of the display. Replace display assembly. L02 Replace logic board. M04 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Display 69