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

2010-08-05
3. Inspect keyboard flex cable for
loose or damaged connections.
Align and reseat the keyboard
flex cable on logic board
connector.
Verify if power key now works
correctly.
Remove two screws on metal
cable cover to access keyboard
connector.
-Plug known good powered
AC adapter.
-Try to power system using
power key
-If system does not power on,
use a conductive tool to short
power-on pads on logic board
(see image on left) . Make sure
you don’t touch any other
pins .
- Verify if system powers on.
4. Disconnect the internal
keyboard flex cable from logic
board and use a conductive
tool to short power-on pads
on logic board (see image on
left) Make sure you don’t touch
any other pins.
Verify if system powers on.
Yes Cable reseat restored poweron
key operation.
No Power-on key still appears to
be stuck or open. Go to step
4.
Yes System powers on suggesting
top case power on key circuit
is open. Replace top case for
open power-on key.
No Power-on key circuit appears
to be closed suggesting a
stuck power-on key. Go to
step 5.
Yes Shorting power-on pads
starts the system. Replace
top case due to stuck poweron
key.
No Go to symptom table: No
power/ not booting
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Mechanical Issues: Thermals and Enclosure 106
X14
X14