Installing iMac Intel 27" EMC 2309 and 2374 SD Board iMac Intel 27" EMC 2309 and 2374 and 2390 SD Board replacement. http://d3nevzfk7ii3be.cloudfront.net/igi/yMVNKHFOxG6OPRqJ Andrew Bookholt Moderate iMac Intel 27" EMC 2309 and 2374

Use this guide to replace a faulty SD Board.

Use this guide to replace a faulty SD Board.

Tools
 Heavy-duty Suction Cups Paper Clip T10 Torx Screwdriver T8 Torx Screwdriver Tweezers Installing iMac Intel 27" EMC 2309 and 2374 Glass Panel Installing iMac Intel 27" EMC 2309 and 2374 Display Stick a suction cup near each of the two top corners of the glass panel. Stick a suction cup near each of the two top corners of the glass panel. To attach the <a href="/Tools/Heavy-duty-Suction-Cups-Pair/IF145-023?utm_source=ifixit_guide&amp;utm_medium=wiki_text&amp;utm_term=if145-023&amp;utm_content=product_link">suction cups</a> we sell, first position the suction cup with the movable handle parallel to the face of the glass panel (as highlighted in the first and second pictures). To attach the [product|IF145-023|suction cups] we sell, first position the suction cup with the movable handle parallel to the face of the glass panel (as highlighted in the first and second pictures). While lightly holding the suction cup against the glass, raise the movable handle until it is parallel with the other handle (as highlighted by the third picture). While lightly holding the suction cup against the glass, raise the movable handle until it is parallel with the other handle (as highlighted by the third picture). If your suction cups refuse to stick, try cleaning both the glass panel and the suction cup with a mild solvent. If your suction cups refuse to stick, try cleaning both the glass panel and the suction cup with a mild solvent. http://d3nevzfk7ii3be.cloudfront.net/igi/sQYsHCwlim2WOs5y http://d3nevzfk7ii3be.cloudfront.net/igi/wHiunt5LEPRI6Df1 http://d3nevzfk7ii3be.cloudfront.net/igi/olRVCyJ2KOMrOshW 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. 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. 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. 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. http://d3nevzfk7ii3be.cloudfront.net/igi/XBLBbPNDcxRAYYWS http://d3nevzfk7ii3be.cloudfront.net/igi/xMmDfMTyn4Ac1SkA http://d3nevzfk7ii3be.cloudfront.net/igi/mqbuAnq3Mon1YWiD Remove the eight T10 Torx screws securing the LCD to the outer case. Remove the eight T10 Torx screws securing the LCD to the outer case. http://d3nevzfk7ii3be.cloudfront.net/igi/ESNuZMMtVT22IbfX Carefully lay the iMac stand-side down on a flat surface. Carefully lay the iMac stand-side down on a flat surface. Due to tight tolerances, you will have to use a thin hooked tool to lift the display out of the outer case. As seen in the third picture, we made one out of a bent paperclip. Due to tight tolerances, you will have to use a thin hooked tool to lift the display out of the outer case. As seen in the third picture, we made one out of a bent paperclip. Use a thin hooked tool to lift one side of the top edge of the display by its steel outer frame. Use a thin hooked tool to lift one side of the top edge of the display by its steel outer frame. After lifting the top edge of the display on one side, hold it out of the outer case while you use a hooked tool to lift the other side. After lifting the top edge of the display on one side, hold it out of the outer case while you use a hooked tool to lift the other side. Do not lift the top edge of the display out of the outer case too far, as several short ribbon cables still connect the two components. Do not lift the top edge of the display out of the outer case too far, as several short ribbon cables still connect the two components. http://d3nevzfk7ii3be.cloudfront.net/igi/GDPPCVGkB2PtSQTu http://d3nevzfk7ii3be.cloudfront.net/igi/lBPpn1rKQNMtQOab http://d3nevzfk7ii3be.cloudfront.net/igi/lFteLcmmOQATW5NN Use a pair of tweezers to pull the vertical sync ribbon cable out of its socket on the LED driver board near the top left corner of your iMac. Use a pair of tweezers to pull the vertical sync ribbon cable out of its socket on the LED driver board near the top left corner of your iMac. http://d3nevzfk7ii3be.cloudfront.net/igi/ljO1oq2TyeXgaQLO http://d3nevzfk7ii3be.cloudfront.net/igi/yDZIHrYRHAplvpQj Rotate the display out of the outer case enough to disconnect the LED backlight power cable from the LED driver board. Rotate the display out of the outer case enough to disconnect the LED backlight power cable from the LED driver board. http://d3nevzfk7ii3be.cloudfront.net/igi/2tDkhS2PAFFoCTJR Squeeze the two display data cable connector arms together to unlock it from its socket on the logic board. Squeeze the two display data cable connector arms together to unlock it from its socket on the logic board. Pull the display data cable connector away from its socket on the logic board. Pull the display data cable connector away from its socket on the logic board. http://d3nevzfk7ii3be.cloudfront.net/igi/TKmkOMUuIj2ESJ1y Lift the display for enough clearance to disconnect the LCD thermal sensor cable connector from its socket on the logic board. Lift the display for enough clearance to disconnect the LCD thermal sensor cable connector from its socket on the logic board. http://d3nevzfk7ii3be.cloudfront.net/igi/LKCEiOECkd3DmUSK Carefully pull the display toward the top edge of your iMac and lift it out of the outer case. Carefully pull the display toward the top edge of your iMac and lift it out of the outer case. http://d3nevzfk7ii3be.cloudfront.net/igi/b1XdVZeQluZHxVrP Grasp the SD board cable connector with a pair of tweezers and pull it straight away from its socket on the SD board. Grasp the SD board cable connector with a pair of tweezers and pull it straight away from its socket on the SD board. http://d3nevzfk7ii3be.cloudfront.net/igi/yMVNKHFOxG6OPRqJ Remove the single T8 Torx screw securing the SD board to the outer case. Remove the single T8 Torx screw securing the SD board to the outer case. http://d3nevzfk7ii3be.cloudfront.net/igi/ktfyUyIA2BhXoGYw Lift the free end of the SD board to clear the plastic optical drive fan body, then pull it away from the edge of the outer case case to clear the two mounting pins. Lift the free end of the SD board to clear the plastic optical drive fan body, then pull it away from the edge of the outer case case to clear the two mounting pins. http://d3nevzfk7ii3be.cloudfront.net/igi/RNOyWPfROiLGGr1Y

To reassemble your device, follow these instructions in reverse order.