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

2010-06-11
8. Verify if a thermal sensor or fan
failure is reported in ASD or
other available service utility.
9. Isolate if issue solved
Verify if shutdown/issue does
not happen anymore after part
exchange.
No Video/Bad Video
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
Unlikely cause: hard drive, optical drive, top case, battery, power adapter
Quick Check
Symptom Quick Check
Power, but No Video
• Power
• No video
• fan, hard drive spin, or optical
drive reset sound
• sleep LED is on or went on
• light if Caps Lock pressed
1. Reset SMC.
2. Reset PRAM.
3. If no startup chime, verify with known-good
memory.
4. Verify with external monitor.
5. Press Alt key on startup..
X22
M23
P17
K99
MacBook Pro (17-inch, Early 2009) Symptom Charts — Startup and Power Issues 40
X10
M18
M08