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Apple imac 20 inch early 2008 User Manual

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    							iMac (20-inch Early 2008)  Take Apart — Cable, DC, Power Supply/SATA/Inverter 2 01
    Re-stick the EMI tape onto the mechanism and rear housing.
    13 .
     
    14.  Replace the stand and the seven screws.
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    							iMac (20-inch Early 2008)  Take Apart — Cable, DC, Power Supply/SATA/Inverter 202
    Replace the mechanism cover. Re-stick the EMI foil as best you can to the rear housing.
    15 .
     
    Replace the hard drive fan.16.   
    						
    							iMac (20-inch Early 2008)  Take Apart — Cable, DC, Power Supply/SATA/Inverter 203
    Position the hard drive data cable on top of the chassis. Secure the cable with Kapton tape.17. 
    Replace the h18.  ard driv e.
    Replace the optical drive flex cable if it was removed.
    19 .   
    						
    							iMac (20-inch Early 2008)  Take Apart — Cable, DC, Power Supply/SATA/Inverter 204
    Replace the optical fan.
    20.
     
    Replace the CPU fan.21.  
    						
    							iMac (20-inch Early 2008)  Take Apart — Cable, DC, Power Supply/SATA/Inverter 205
    Replace the optical driv22. e.
    Replace the logic board.
    23. 
    Replace the right speaker24.  .
    Replace the left speaker.
    25. 
    R26.  eplace the power supply
    R
    2 7.  eplace the display panel.
    Replace the front bezel and connect the microphone cable.
    28.  
    Clean and replace the glass panel29. . Note: This step is very important. Follow the procedures 
    to ensure the glass is clean and free of particles.
    Replace the access door.
    30.  
    Run diagnostics. If Apple Hardware Test comes up with an error, refer to the 31. Apple Hardware 
    Test error code chart in the Troubleshooting chapter.
    Check all cable and sensor connections and test again.
    32.   
    						
    							iMac (20-inch Early 2008)  Take Apart — Rear Cover 206
    Rear Cover
    Tools
    No tools are required to remove the rear cover.
    Preliminary Steps
    Before you begin, remove the following: (LINKS NOT WORKING)
    A
    • ccess door
    Glass Pane
    • l
    F
    • ront bezel
    LCD display pane
    • l
    Speaker, righ
    • t
    Speaker, lef
    • t
    CPU fa
    • n
    Logic boar
    • d
    Power Suppl
    • y
    Hard driv
    • e
    Hard drive fa
    • n
    Hard drive SATA cabl
    • e
    Optical driv
    • e
    Optical fa
    • n
    Optical	flex	cabl• e
    Inverte
    • r
    Mechanism cove
    • r
    Stan
    • d
    Mechanis
    • m 
    						
    							iMac (20-inch Early 2008)  Take Apart — Rear Cover 207
    Part Location
    Removing the Rear Cover
    With all of the preliminary steps performed, the rear cover is the remaining assembly. Note: 
    the photo above happens to show the chassis on the rear housing. The rear housing does not 
    include the chassis.
     A replacement rear cover includes:
    EMI shielding
    • 
    Bluetooth antenna• 
    AirPort antennas• 
    Power supply cable• 
    Hard drive data cable• 
    Camera and microphone cable• 
    Power button cable• 
    AC inlet• 
    Gaskets• 
    Power supply pressure walls, left and right•  
    						
    							iMac (20-inch Early 2008)  Take Apart — Rear Cover 208
    Replacing the Rear Cover
    Replace the mechanism1. .
    Replace the stand
    2.  .
    Replace the mechanism cover
    3. .
    Replace	the	optical	flex	cable.4.  
    Replace the hard drive fan5. .
    Replace the optical fan.
    6.  
    R7. eplace the cpu fan.  
    Replace the logic board
    8.  .
    Replace the left speaker
    9. .
    Replace the right speaker.
    10.  
    Replace the optical drive.11 . 
    Replace the hard drive.12.  
    Replace the power suppl13 . y.
    Replace the display panel.
    14.  
    Replace the front bezel15 . .
    Replace the glass panel
    16.  
    Replace the memory access door17. . 
    						
    							iMac (20-inch Early 2008)  Take Apart — Stand 209
    Stand
    Tools
    Torx T10 screwdriver• 
    Soft, clean cloth• 
    Preliminary Steps
    Before you begin, remove the following:
    A
    • ccess door
    Glass Pane
    • l
    F
    • ront bezel
    LCD display pane
    • l
    Speaker, righ
    • t
    Logic boar
    • d
    Hard driv
    • e
    Hard drive fa
    • n
    Mechanism cove
    • r
    Part Location 
    						
    							iMac (20-inch Early 2008)  Take Apart — Stand 210
    Removing the Stand 
    1. Remove the seven T10 clutch-to-stand screws. 
     
    Lift the stand off the two pins on the mechanism. Carefully separate the stand from the 2.  
    clutch mechanism and rear housing.
     
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