iMac (27-inch, Mid 2010) Symptom Charts — Mass Storage 75
2010-09-09
6. Remove hard drive and verify
if rubber vibration isolation
grommets are properly
installed in hard drive bracket
(attached to hard drive) and
to mechanism in rear housing
(where hard drive pins insert).
Yes Go to step 7
No If grommets are missing or
damaged, replace hard drive
bracket or mechanism as
appropriate. Go to step 7
7. Restart system and verify if the
noise is still present.
Yes Go to step 8
No Reseating or replacing the
drive rubber grommets /
bracket solved noise issue.
8. Reconnect user’s drive and,
with user’s permission, erase
hard drive and reinstall Mac
OS. Verify if installation process
completes.
Yes Go to step 9.
No Replace hard drive.
Go to step 10.
9. Restart system and verify if the
noise is still present.
Yes Replace hard drive.
Go to step 10.
No Software related issue.
10. With replacement hard drive
installed, reboot computer.
Verify if noise is still present.
Yes Replacement hard drive did
not resolve issue. Go to step
11 to check for other source
of noise.
No Issue resolved by replacing
hard drive.
H06
11. Disconnect hard drive SATA and
power connections then boot
from the Install DVD. Verify if
noise is caused by fans.
Yes Go to Fan Failures/Thermal
Issues symptom ow.
No Go to step 12.
12. Disconnect hard drive and
optical drive then boot from an
external volume. Verify if noise
disappears when optical drive
has been disconnected.
Yes Possible optical drive or
media issue. Go to Optical
Drive Noisy symptom ow.
No Noise issue still present, but
does not appear to be caused
by hard drive. Go to Noise/
Hum/Vibration symptom
ow.