 Apple Technician Guide - tim.id.au

2010-08-05
7. Check if sleep event happens
repeatedly in system.log
If sleep/wake events are
repeatedly reported, plug
external monitor and run ASD
to check for sleep sensor test.
Verify if sleep sensor test is
failing.
8. Check if over temp cause
reported in system.log
If shutdown error is related
to over temp shutdown
cause, run ASD and verify
that a sensor or fan failure is
reported.
9. Isolate if issue solved
Verify that shutdown/issue
does not happen anymore
after part exchange.
Yes Check for intermittently
shorted BIL/sleep sensor in
top case. If damaged, replace
BIL/sleep sensor cable of top
case.
Reseat and retest sleep
sensor with ASD. If failing
again, check with a coin for
presence of a magnet in left
side of display clamshell.
If magnet present, replace
BIL/Sleep Sensor cable and
retest.
If magnet missing, replace
display assembly.
If still sleep sensing failing
after above test, replace logic
board
No Go to step 8
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 does not happen with
known-good fan, replace fan.
-If over temp failure reported
check for cause of over temp
like obstructed vent, dust
in heatsink fin, or clogged
fan and retest. If still failing
replace part where sensor is
located (logic board, battery,
display assembly or trackpad)
according to the sensor
location table of service
manual.
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
MacBook Pro (15-inch, 2.53 GHz, Mid 2009) Symptom Charts — Startup and Power Issues 41
X03
X03
L15
M22
M18
X03
X10
M18
M08