Apple Technician Guide - tim.id.au
Apple Technician Guide - tim.id.au
Apple Technician Guide - tim.id.au
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2010-08-05<br />
6. Disconnect display assembly<br />
and test with known-good<br />
display assembly. Verify that<br />
system now starts up without<br />
kernel panic/freeze.<br />
7. Check for thermal values and<br />
fan running speed<br />
Run ASD to check for fan<br />
and sensors test, and verify<br />
that ASD does not report any<br />
overtemp, failing sensor, or fan.<br />
Yes Replace display assembly. L14<br />
No Go to step 7<br />
Yes No thermal fail detected -<br />
Replace logic board with<br />
matching symptom:<br />
- If hang or freeze<br />
- If Kernel Panic/system<br />
crashes<br />
No If sensor test failed, reseat<br />
sensor connections on logic<br />
board and retest. If still failing,<br />
replace sensor or part where<br />
it is located (top case, display,<br />
other) :<br />
If top case sensor failed<br />
If display sensor failed<br />
If logic board sensor failed<br />
If fan test failed, replace fan.<br />
If overtemp , replace heatsink.<br />
M05<br />
M06<br />
X99<br />
L14<br />
M18<br />
X03<br />
X10<br />
MacBook Pro (15-inch, 2.53 GHz, M<strong>id</strong> 2009) Symptom Charts — Startup and Power Issues 51
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