Apple MacBook Pro 13 inch - Page 59

MacBook Pro (13-inch) Symptom Charts — Display 59
2010-09-14
Deep Dive: Incorrect/Missing Colors
Check Result Action Code
1. Verify display is listed in the
System Proler’s Graphics/
Displays device tree.
Yes This ensures color prole can
be matched with LCD.
Go to step 2.
No Go to N09.
2. Verify System Preferences
Display Prole is valid for
display being tested. Color
prole should be set to Color
LCD, user may have created an
o-color calibration setting.
Yes If display prole is valid and
the colors are still incorrect or
missing go to step 3.
No Set System Preferences:
Displays: Color to Color LCD
and retest.
3. Verify that the glass panel is
free of contaminants.
Yes Go to step 4.
No Clean glass panel using
approved method. Retest.
4. Run Clamshell Service
Diagnostic utility and check
for LCD panel presence. If not
found, reseat and verify LVDS
cable is secure to the logic
board. Are colors restored?
Yes Loose cable connection. Issue
resolved.
No Go to step 5.
5. Set desktop pattern in System
Preferences to ‘Solid Gray Light’.
Verify if incorrect/missing color
issue aects entire display.
Yes Test a known-good display,
go to step 7.
No Go to step 6.
6. Set up display under test side
by side with another known
good display showing the
same image. Verify if issue
is noticeably worse on the
display being tested.
Yes Test a known-good display,
go to step 7
L02
No Small variations in color
uniformity are normal and do
not warrant replacement or
repair of the display.
7. Substitute a known-good
display assembly to test logic
board video output. Is normal
video restored?
Yes Replace display assembly. L02
No Replace logic board. M04