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

2010-08-05
7. Hardware-related shutdowns:
Run ASD and verify if a sensor
failure is reported.
8. Verify if a thermal sensor or fan
failure is reported in ASD.
9. Isolate if issue solved
Verify if shutdown/issue does
not happen anymore after part
exchange.
Yes -If a temperature or a fan
sensor failure is reported, go
to step 8
-If a voltage or a current
sensor failure is reported in
ASD with known good AC
adapter and batteries, replace
logic board.
No Setup ASD to loop test suite
for burn in tests and go to
step 7. If no failure is found
after burn in tests, return unit
to customer for no failure
found.
Yes -If fan not running failure,
check for fan cable seating
and retest. If same failure
after retest replace fan with
known-good fan and retest.
If issue does not happen with
known-good fan, replace
user’s fan.
-If an over temp failure
reported, check for cause of
over temp, like obstructed
vent, dust in heatsink fin,
clogged fan and retest. If still
failing replace part where
sensor is located (logic
board, battery, or trackpad)
according to the sensor
location table . Go to step 9
No Replace Thermal module
Go to step 9
Yes Issue fixed
No Replace logic board with
corresponding symptom:
-if for thermal error cause
-if for other cause
M23
X22
M23
P17
K99
X10
M18
M08
MacBook Pro (15-inch, Mid 2010) Symptom Charts — Startup and Power Issues 34