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REPLACEMENT HARD DRIVE FOR IMAC 2007 MANUALS
REPLACEMENT HARD DRIVE FOR IMAC 2007 UPDATE
REPLACEMENT HARD DRIVE FOR IMAC 2007 FULL

Hard Drive ->Replacing the Hard Drive->Step 2: Added “Orient the hard drive with the circuit board side of the drive facing up.”.

Each power supply comes with the correct pressure wall.”

DC Power Supply->Replacing the AC/DC Power Supply->Step 1: Added “Note: There are two types of power supplies and each requires a specific pressure wall.

REPLACEMENT HARD DRIVE FOR IMAC 2007 MANUALS

The Take Apart and Troubleshooting chapters in the iMac (20-inch Mid 2007) and iMac (24-inch Mid 2007) Service Manuals have been updated in the following manner:

REPLACEMENT HARD DRIVE FOR IMAC 2007 UPDATE

to the existing sections mentioning “Make sure all software updates have been applied to the computer.” Whenever the video card on an iMac (24-inch Mid 2007) or iMac (20-inch Mid 2007) computer is replaced, ensure that the iMac Graphics Firmware Update 1.0 has been installed before returning the computer to the customer.

Symptom Charts->Video ->Added the iMac Graphics Firmware Update 1.0.

Order the rear housing if you require a new AC Power Inlet. The AC Power inlet is not available as a service part.

The AC Power Inlet take apart procedure was removed from the service manual.

The following chapters have been updated:

iMac (24-inch 2007)-Lower Exploded View.

iMac (24-inch, Mid 2007)-Upper Exploded View.

Cleaning and Handling of the Glass Panel.

iMac G4 Q26C DVT MLB GEN X 051-6490 RevA.

iMac All-in-One Computer - 3.06 GHz - Desktop MC413LL-A.

IMAC 27 INCH RETINA 5K I5 3.3GHZ MK482FN/A.

iMac 24-inch (late 2006) VESA Mount Adapter.

IMAC 21.5 INCH 2012 INFORMATION GUIDE 2.

IMAC - ALL-IN-ONE DESKTOP - 3.06GHz Intel.It runs at startup and continually to always control the fan correctly, prevent the loud fan noise and protect the drive from overheating. HDD Fan Control works to fix this issue by reading the drives internal temperature using the S.M.A.R.T protocol and set the fans actual speed to a value good to protect the drive. These programs will not work for this particular issue as they often only control the base speed, and if they do control the fans actual speed they rely on the temperature reported by the sensor which is now incorrect. Shorting the temperature sensor cable (Not a possibility on 2011 iMacs) this tricks the iMac into thinking the drives temperature is very low, hence slow fan speed.īoth these fixes are less then perfect and leave the drive in a dangerous situation with no protection from overheating.Īnother option people try is other Fan Control software.Using smcFanControl and the terminal to set a MAX speed for the fan and writing scripts to start this after every sleep/restart.Fixes people have used in the past included: Resetting the SMC (System Management Controller) will have a temporary effect, but again the fan will speed up.

REPLACEMENT HARD DRIVE FOR IMAC 2007 FULL

If you replace your drive, your iMac will initially seem fine, but soon the fan will begin to speed up to full speed. When the iMac does not receive a good signal from the hard drive it puts the fan at full speed to protect the drive. Replacement drives do not contain the firmware to deliver temperature data on the temperature sensor cable.

This is due to Apple replacing the external Hard Drive temperature sensor with a proprietary firmware and using the drives internal sensor. Since the late 2009 iMacs came out, replacing the hard drive has caused the internal Hard Drive Fan to start running at around 6000RPM.