Apple Mac Pro - Page 57

Mac Pro (Mid 2010) Symptom Charts — Noise/Hum/Vibration 57
2010-08-31
3. Disconnect all internal optical
and hard drives. Verify the
ashing “Folder?” appears after
approximately 30 seconds.
Yes Computer unable to
boot with internal drives
connected. Isolate drives
Go to Hard Drive Not
Recognized/Mounting
and Optical Drive Not
Recognized/Mounting.
No Go to Minimum
Conguration Testing
Noise/Hum/Vibration
Unlikely cause: Power supply, memory, processors, processor board, backplane board, PCIe
cards, AirPort card, Bluetooth card
Quick Check
Symptoms Quick Check
Noise/Hum/Vibration
• Buzzing
• Rattling
• Ticking
• Squeaking
1. Ensure the computer enclosure is undamaged; all
enclosure parts are in good condition not loose
or excessively worn. No foreign objects inside.
2. Verify the computer is sitting on a sturdy at
surface.
3. Verify all the air intake/outow fans and vents are
not obstructed.
4. Various normal fan acceptable noises may be
heard in a quiet location.
5. Various normal hard drive and optical drive
operational acceptable noises may be heard in a
quiet location.
6. Reset the SMC. Verify all applicable SMC, EFI and
Software Updates have been applied.
7. Play sound sample at loud and soft volume levels
to determine if noise is caused by the speaker or
the amplier circuit. For more information, go to
Distorted Audio from Internal Speaker.
8. Some software processes may cause the fans
RPM to increase allowing the computer to remain
within normal operating temperature range.
Quitting computer-intensive processes should
allow the fans to slow after a brief period.