Apple MacBook Pro 13 inch - Page 55

MacBook Pro (13-inch) Symptom Charts — Startup and Power Issues 55
2010-09-14
4. Locate the source of the noise.
Is the noise from an optical
drive?
Yes Check with a dierent media
disc. Possible issue with disc
label or out of balance media.
If not related to media, and
noise is above normal level,
replace optical drive.
J04
No Go to step 5.
5. Is the noise from the hard
drive?
Yes It is normal for drives to
produce noise when they
spin up or the heads move.
Replace drive if noise is above
normal levels.
H06
No Go to step 6.
6. Is the noise coming from the
fan?
Yes The fan(s) are generally
running in a slow mode,
but may accelerated when
intensive processing is
required (calculation, 3D
gaming, or screen saver
animation). If still beyond
expected sound level, check
for interference of fan with
other mechanical element of
system (foam, bracket, shield)
before replacing a noisy fan.
X03
No Go to step 7. P04
7. Noise maybe related to
interference from other
electrical devices operating
near the computer, or on the
same AC power source. Verify if
noise is gone when operating
in a dierent location on a
dierent AC circuit.
Yes Perhaps operating the unit
with a surge suppressor will
eliminate or reduce the noise.
Change location of use or
limit use of other device that
is inducing the noise.
No Replace logic board. M99