Apple Technician Guide MacBook Pro (17-inch, Early 2009) - tim.id.au

2010-06-11
7. Substitute a known-good
display assembly to test logic
board video output. Is normal
video restored?
Deep Dive: Distorted/Blurred Image
Yes Replace display assembly. L02
No Replace logic board. M04
Check Result Action Code
1. Sample image illustrates loss of
LVDS data signals to LCD or a
defective LCD panel. Inspect &
reseat LVDS cable connection
looking for damaged or bent
pins. Is image restored with
reseated cable connection?
2. Substitute a known good
display assembly to test logic
board video output. Is normal
video restored?
Deep Dive: Pixel Anomalies
Yes Issue due to loose connection.
Display issue resolved.
No Go to step 2.
If logic board connector
damage, replace logic board.
M24
Yes Replace display assembly. L04
No Replace logic board. M04
Check Result Action Code
1. Determine if “defects” are dust/
debris on surface of glass panel.
2. Determine if bright pixel
defects exceed the acceptable
number. See
Display Issue: Pixel Anomalies.
3. Determine if dark pixel defects
exceed the acceptable number.
See
Display Issue: Pixel Anomalies.
4. Determine if the combination
of bright/dark pixel defects
exceed the acceptable number.
See
Display Issue: Pixel Anomalies.
Yes Clean glass panel.
No Go to step 2.
Yes Replace display assembly. L08
No LCD meets bright pixel defect
specifications. Go to step 3.
Yes Replace display assembly. L08
No LCD meets dark pixel defect
specifications. Go to step 4.
Yes Replace display assembly. L08
No Explain to user that LCD is
within specifications. Do not
replace display assembly.
MacBook Pro (17-inch, Early 2009) Symptom Charts — Display 71