Apple imac 20 inch late 2006 User Manual

							iMac (20-inch Late 2006) Take Apart — Hard Drive 81
Route the hard drive sensor cable under the metal chassis. Connect the sensor cable to the 
3. 
logic board.  
Insert the hard drive pins into the grommets. Lower the drive into the rear housing.   
4.   
						

							iMac (20-inch Late 2006) Take Apart — Hard Drive 82
Secure the two T10 screws on the hard drive mounting bracket to the inverter board.
 
5. 
Replace the display panel.
6.  
Replace the lower EMI shield.
7.  
Replace the front bezel.
8.  
Replace the access door.
9.  
						

							iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 83
Power Supply
Tools
Torx T10 screwdriver
• 
Preliminary Steps
Before you begin, remove the following:
A
•  ccess door
F
•  ront bezel
Lower EMI shield
• 
Display Pane
•  l
Hard driv
•  e
Logic boar
•  d
Part Location 
						

							iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 84
Removing the AC/DC Power Supply 
 WARNING: The AC/DC power supply PCB remains powered up whenever the system is 
plugged in, whether or not the system has been turned on. Use extreme caution when 
troubleshooting the system with the front bezel removed.  Don’t work alone. In the event of an electrical shock it is important to have another 
• 
individual present who can provide assistance.
Keep one hand in your pocket when working on any iMac (20-inch Late 2006) system 
• 
that is plugged in. This will help ensure that your body does not provide a path to 
ground in the event that you accidentally make contact with the line voltage.
Don’t wear jewelry, watches, necklaces, or other metallic articles that could present a 
• 
risk if they accidentally make contact with the power supply circuitry. 
1.   Using a torx screwdriver, remove three self-tapping screws and one machine screw (bottom 
right corner) on the power supply board.  The top left screw also connects a ground cable to 
the chassis; leave it attached to the chassis.  Replacement Note: Install the machine screw 
first when installing the power supply.  
922-7159 (x3)
922-6842 
						

							iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 85
Disconnect the two cables; the inverter cable on the left and the AC-DC power supply to AC 
2.  
power inlet cable on the right. The AC cable is tucked under the metal chassis. With your 
fingers or a black stick, pry the cable free from the chassis and disconnect it. Lift the power 
supply out of the chassis.  
  
						

							iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 86
Replacing the AC/DC Power Supply
WARNING: The AC/DC power supply PCB remains powered up whenever the system is 
plugged in, whether or not the system has been turned on. Use extreme caution when 
troubleshooting the system with the front bezel removed. 
• Don’t work alone. In the event of an electrical shock it is important to have another 
individual present who can provide assistance.
Keep one hand in your pocket when working on any iMac system that is plugged in. 
• 
This will help ensure that your body does not provide a path to ground in the event 
that you accidentally make contact with the line voltage.
Don’t wear jewelry, watches, necklaces, or other metallic articles that could present a 
• 
risk if they accidentally make contact with the power supply circuitry.   
						

							iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 87
Connect the AC-DC power supply cable to the inverter on the left. Reconnect the power 
1.  
supply to AC power inlet cable. Tuck the AC power inlet cable under the metal chassis.  
Replace the four power supply screws. Install the machine screw (bottom right corner) first 
2.  
when installing the power supply.  
Replace the hard drive.
3.  
						

							iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 88
Replace the logic board.
4.  
Replace the display panel.
5. 
Replace the lower EMI shield.
6.  
Replace the front bezel.
7.  
Replace the access door.
8.  
Replace the display panel.
9. 
Replace the lower EMI shield.
10.  
Replace the front bezel.
11 .  
Replace the access door.
12.   
						

							iMac (20-inch Late 2006) Take Apart —Logic Board 89
Logic Board
Tools
Torx T10 screwdriver
• 
Torx T6 screwdriver
• 
Preliminary Steps
Before you begin, remove the following:
A
•  ccess door
F
•  ront bezel
Lower EMI shield
• 
Display Pane
•  l
Optical Driv
•  e
Disconn
•  ect the IR board 
Disco
•  nnect the AirPort antennas
Disconnect the Bluetooth antenn
•  a
Part Location 
						

							iMac (20-inch Late 2006) Take Apart —Logic Board 90
Removing the Logic Board  
Disconnect the eight cables from the connectors on the logic board.  
1.  
2.   Remove seven T10 screws. Screws are labeled below as self-tapping or machine screws.- 
 
922-6800
922-6842
922-???? (extra 
long screw)