Apple MacBook Pro 13 inch - Page 45

MacBook Pro (13-inch) Symptom Charts — Startup and Power Issues 45
2010-09-14
9. Check for No Backlight. Power
on unit. Using a lamp or bright
light source, verify that a faint
image or Apple logo appears.
Yes Logo image visible - check
LVDS cable. Inspect cables for
damage near clutches:
- if damaged, replace display
assembly and go to step 11
- if cable is not damaged, run
Clamshell Service Diagnostic
utility and check for LCD
panel presence. If not found,
reseat cable and retest, then
go to step 11.
L09
No If symptom continues,
go to step 10.
10. Verify with Known good
display assembly
Connect known-good display
assembly to system.
Yes System is functioning with
known-good display assembly
Replace display assembly if
following symptom reporting:
- had no power issue
- had incorrect/missing colors
- had blank video
- had distorted / blurred video
- had vertical/horizontal lines
- had noise/unstable ickering
- had dim backlight
- had bad spot(s)/pixels
- had no backlight
- could not change resolution
L01
L02
L03
L04
L05
L06
L07
L08
L09
L10
No Symptoms unchanged -
replace logic board.
M03
11. Verify with reseated LVDS cable
or replaced display assembly
Verify that unit now has video
and backlight.
Yes Issue was only due to
damaged display assembly or
unseated cable.
No Display cable damaged the
logic board. Replace logic
board.
M25