 Apple Technician Guide MacBook Pro (15-inch, Mid ... - tim.id.au

2010-08-05
4. Inspect LVDS connectors and
cable under magnification for
pinched cables and damaged
or bent pins. Verify if any of
the connections appear to be
defective.
5. Substitute a known-good
display clamshell to test
internal logic board video
and backlight power output.
Verify if backlight and display
functions are operational.
6. Verify if display and backlight
operations were restored with
known-good display clamshell
and replacement logic board.
Yes - Defective LVDS cable.
Replace display assembly.
- Defective LVDS connector
on logic board. Replace logic
board.
No If connections are OK and
secure and the display is still
blank, go to step 5
Yes Replace user’s display
assembly.
No No LED backlight power from
logic board. Continue to use
known-good clamshell and
replace logic board. Go to
step 6.
Yes Logic board LED backligtht
power was probably
damaged by user’s clamshell
assembly cable. Do not
reinstall user’s clamshell;
replace it.
No Check functionality of knowngood
clamshell assembly on
known-good computer.
L09
M25
L09
M25
L09
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Display 72