Thursday, November 24, 2016

Apple iMac Intel 21.5 How to replace the HDD - Hard Drive Replacement

Before beginning, unplug your iMac and lay it on a soft surface as shown.
Stick a suction cup near each of the two top corners of the glass panel.
To attach the suction cups we sell, first position the suction cup with the movable handle parallel to the face of the glass panel. While lightly holding the suction cup against the glass, raise the movable handle until it is parallel with the other handle.
If your suction cups refuse to stick, try cleaning both the glass panel and the suction cup with a  mild solvent.
Gently lift the glass panel perpendicular to the face of the LCD enough to clear the steel mounting pins attached along the underside of the top edge of the glass panel.
Pull the glass panel away from the lower edge of the iMac and carefully set it aside.
During reinstallation, be sure to meticulously clean the inside of the glass panel and the face of the LCD as any dust or fingerprints trapped inside will be annoyingly visible when the machine is turned on.
Remove the eight 8 mm T10 Torx screws securing the display to the outer case.
The last two pictures are detail shots of each side of the display.
Slightly lift the top edge of the display out of the outer case.
Do not lift it too much. There are several cables attaching the display to the logic board.
Pull the vertical sync cable connector out of its socket on the LED driver board near the top left corner of your iMac.
Rotate the display out of the outer case enough to disconnect the LED backlight power cable from the LED driver board.
Disconnect the LED backlight power cable by depressing the locking mechanism while pulling the connector away from its socket (toward the bottom edge of the iMac).
The display data cable plug has a wire lock. Disengage the plug's lock by rotating the plastic tab so that it points upward. (It is not a pull tab.)
Pull the display data cable straight out of its socket on the logic board.
Do not lift up on the display data cable, as its socket is very fragile. Pull the cable parallel to the face of the logic board
Disconnect the LCD thermal sensor cable connector from its socket on the logic board.
If your fan is spinning full speed after completion, check this connection or the hard drive's thermal sensor cable.
Carefully pull the display toward the top edge of your iMac and lift it out of the outer case, minding any cables that may get caught.
Pull the hard drive temperature sensor connector toward the top edge of the iMac to disconnect it from its socket on the logic board.
Remove the two 9 mm T10 Torx screws securing the upper hard drive bracket to the outer case.
Slightly rotate the hard drive out of the outer case and lift it up off its  mounting pins toward the top edge of the iMac.
Be careful not to contact the AirPort card as you lift the hard drive out of its recess.
Disconnect the SATA data cable and SATA power connector from their respective sockets by pulling each connector away from the hard drive.
Before disconnecting the thermal sensor cable, take note of its orientation. It is extremely important to reinstall the connector in the current orientation so the fans will not run at full speed.
If you have multiple pins on your replacement hard drive, put the connector closest to the SATA connections and closest to the PCB board.
Disconnect the hard drive thermal sensor cable from the hard drive.
Remove the two T8 Torx screws securing the upper bracket to the hard drive.
Remove the upper bracket from the hard drive.
Remove the two T8 Torx pins from the other side of the hard drive.
Carefully peel off the piece of EMI foam attached to the front of the hard drive.
Don't forget to transfer this to your new hard drive.