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Apple imac 20 inch early 2008 User Manual

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    							iMac (20-inch Early 2008)  Take Apart — Stand 2 11
    Replacing the Stand
    Align the pins on the clutch mechanism to the holes in the stand.1. 
     s
    Replace the stand screws.  2.  
     
    Replace the chassis.3. 
    Replace the hard drive fan. 4. 
    Replace the power supply.5. 
    922-8209 
    						
    							iMac (20-inch Early 2008)  Take Apart — Stand 212
    Replace the hard drive.6. 
    Replace the logic board.7. 
    Replace the right speaker8.  .
    Replace the display panel.
    9. 
    Replace the front bezel.10.  
    Clean and replace the glass panel11 . . Note: This step is very important. Follow the procedures 
    to ensure the glass is clean and free of particles.
    Replace the access door.
    12.   
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 213
    Chassis
    Tools
    Torx T10 screwdriver• 
    Preliminary Steps
    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
    Mechanism cove
    • r
    Stan
    • d
    Mechanis
    • m 
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 214
    Part Location 
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 215
    Removing the Chassis 
    Slide the AC connector out from under the pressure wall. The pressure wall does not have to 1. 
    be removed.
    2.  Remove ten chassis screws. Note: The three screws across the top are a longer flat-head T10 
    screw and there is one short stubby screw for the ground cable.
     
    922-8250 (3 at top)
    922-6850
    922-7069 (Grnd) 
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 216
    Pull the green ground cable through the opening in the chassis.
    3. 
    Lift the chassis out of the rear housing.4.
      
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 217
    Replacing the Chassis
    Make sure the DC power supply/ SATA/inverter cable is routed properly in the rear housing 1. 
    before replacing the chassis. Position the cable between the black tabs on the rear housing. 
    Position the chassis into the rear housing.2.  
    Pull the AC ground wire through the hole in the chassis.3.  
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 218
    Make sure the microphone cable is pulled up and through the notch in the chassis.
    4.
     
    5. Begin with the three screws along the top, then replace the remaining chassis screws, 
    including the short AC ground screw.
    6. 
    922-8250
    922-6850
    922-7069 (Grnd) 
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 219
    Slip the AC inlet cable back under the pressure wall.
    7.
     
    Replace the stand and stand screws.8.   
    						
    							iMac (20-inch Early 2008)  Take Apart — Chassis 220
    Re-stick the EMI tape on the mechanism.
    9. 
    Replace the mechanism cover. Re-stick the EMI foil to the rear housing.10.
      
    						
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