Apple imac 17 inch flat panel User Manual

							 iMac (17-inch Flat Panel)  Take Apart - 39
 Drive Carrier Assembly (Optical and Hard Drive)
Procedure
1. Rotate the base unit so the optical drive door is facing up (as shown below).
2. Remove two screws on the EMI shield. Carefully lift the shield and peel the copper 
tape off the drive. Replacement Note: When replacing the EMI shield, be sure to use 
the two shorter screws. The longer screws will scratch the top housing. 
						

							40 - iMac (17-inch Flat Panel) Take Apart
 Drive Carrier Assembly (Optical and Hard Drive) 3. Remove four screws attaching the drive carrier to the metal chassis (also known as 
the Faraday cage). 
						

							 iMac (17-inch Flat Panel)  Take Apart - 41
 Drive Carrier Assembly (Optical and Hard Drive)4. Remove the Airport antenna and the video cable from the plastic clip on the side of the 
hard drive. 
						

							42 - iMac (17-inch Flat Panel) Take Apart
 Drive Carrier Assembly (Optical and Hard Drive) 5. Grasp the carrier on both sides. Lift and pull the carrier in the direction of the arrow. 
Once the carrier is out, flip the carrier to the right to disconnect the power cables. 
Note: The carrier fits snugly into the chassis.
6. Peel the white wrapper up to access the screws connecting the hard drive to the 
carrier. Remove four screws and the hard drive.  
						

							 iMac (17-inch Flat Panel)  Take Apart - 43
 Drive Carrier Assembly (Optical and Hard Drive)7.  Disconnect the data cables.
8. Remove four screws (shown by circles) to remove the optical drive from the carrier.
9. Slide the optical drive out of the carrier. Be careful of the black plastic dust filter on the 
carrier. It is very fragile and can rip easily if not handled properly. Note: The silver 
insulator is part of the carrier assembly.  
						

							44 - iMac (17-inch Flat Panel) Take ApartWarning: Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from all thermal interface mating surfaces, 
and reapply thermal paste to the mating surfaces on the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimum of 17 
in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is 
firmly mated with the top base. If you do not have a torque driver, you must make 
sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY. 
Warning:
 Failure to follow these steps could cause the computer to overheat 
and damage internal components.
Refer to the topic “Thermal Paste Application” for detailed information. 
						

							 iMac (17-inch Flat Panel)  Take Apart - 45
 Power Supply
Power Supply
Tools
This procedure requires the following tools:
• Torx-10 screwdriver
Part Location
Preliminary Steps
Before you begin, do the following:
• Position the computer in the service stand and rotate the door to the right.
• Remove the user access plate.
• Remove the bottom housing.
• Remove the drive carrier assembly. 
						

							46 - iMac (17-inch Flat Panel) Take Apart
 Power Supply
Procedure
1. Remove the two power supply screws circled below.  
						

							 iMac (17-inch Flat Panel)  Take Apart - 47
 Power Supply2. Open the optical drive door as shown. Support the metal plate and power supply as 
you remove the four screws.
 Important: The two screws near the door hinge are shorter than the other power 
supply screws. Failure to replace the shorter screws into their correct location will 
scratch the top housing. See step 4, Replacement Note. 
						

							 
48 - 
 iMac (17-inch Flat Panel) Take Apart
 Power Supply 3. Remove the power supply and metal shield from the chassis (Faraday cage). 
4. 
Replacement Note: 
  When replacing the metal shield (see picture above) that sits on 
top of the power supply, make certain that the two shorter screws are inserted into the 
screw holes near the optical door. If the longer screws are inserted by mistake, the 
screws will scratch the top housing (circled below).