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 />
5. Is the noise from the hard<br />
drive?<br />
6. Is the noise coming from the<br />
fan?<br />
7. Noise maybe related to<br />
interference from other<br />
electrical devices operating<br />
near the computer, or on<br />
the same AC power source.<br />
Verify if noise is gone when<br />
operating in a different<br />
location on a different AC<br />
circuit.<br />
Yes It is normal for drives to<br />
produce noise when they<br />
spin up or the heads move.<br />
Replace drive if noise is above<br />
normal levels.<br />
No Go to step 6<br />
Yes The fan(s) are generally<br />
running in a slow mode,<br />
but may accelerated when<br />
intensive processing is<br />
required (calculation, 3D<br />
gaming, or screen saver<br />
animation). If still beyond<br />
expected sound level, check<br />
for interference of fan with<br />
other mechanical element of<br />
system (foam, bracket, shield)<br />
before replacing a noisy fan.<br />
MacBook Pro (15-inch, 2.53 GHz, M<strong>id</strong> 2009) Symptom Charts — Startup and Power Issues 56<br />
H06<br />
X03<br />
No Go to step 7. P04<br />
Yes Perhaps operating the unit<br />
with a surge suppressor will<br />
eliminate or reduce the noise.<br />
Change location of use or<br />
limit use of other device that<br />
is inducing the noise.<br />
No Replace logic board. M99
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