Apple iMac (Early 2006 20-inch) Specifications

 Service Source© 2006 Apple Inc. All rights reserved.iMac (20-inch Late 2006)13 December 2007

iMac (20-inch Late 2006) Take Apart — General Information 10SafetyWarning: When the iMac (20-inch Late 2006) is under power, be aware that the power

iMac (20-inch Late 2006) Take Apart —AC Power Inlet 100Removing the AC Line Filter 1. Using a torx T10 screwdriver, remove the three self-tapping sc

iMac (20-inch Late 2006) Take Apart —AC Power Inlet 101Replacing the AC Line FilterInstall the AC power lter on the rear housing screw mounts with t

iMac (20-inch Late 2006) Take Apart —AC Power Inlet 102

iMac (20-inch Late 2006) Take Apart —Fan, Hard Drive 103Fan, Hard DriveToolsNo tools are required to remove the hard drive fan.• Preliminary StepsBef

iMac (20-inch Late 2006) Take Apart —Fan, Hard Drive 104Removing the Hard Drive Fan Once the logic board and speakers have been removed, the fan will

iMac (20-inch Late 2006) Take Apart —Fan, Hard Drive 105Replacing the Hard Drive FanLower the fan onto the white posts in the rear housing. Push it d

iMac (20-inch Late 2006) Take Apart —Fan, Hard Drive 106

iMac (20-inch Late 2006) Take Apart —Fan, Optical Drive 107Fan, Optical DriveToolsNo tools are required to remove the optical drive fan.• Preliminary

iMac (20-inch Late 2006) Take Apart —Fan, Optical Drive 108Removing the Optical Drive Fan Once the logic board and speakers have been removed, the fa

iMac (20-inch Late 2006) Take Apart —Fan, Optical Drive 109Replacing the Optical Drive FanLower the fan onto the white posts in the rear housing, abo

iMac (20-inch Late 2006) Take Apart — General Information 11Opening the ComputerApple authorized, desktop certied technicians only should ever remov

iMac (20-inch Late 2006) Take Apart —Fan, CPU 11 0Fan, CPUToolsNo tools are required to remove the CPU fan.• Preliminary StepsBefore you begin, remov

iMac (20-inch Late 2006) Take Apart —Fan, CPU 111Removing the CPU Fan Once the logic board and speakers have been removed, the fan will be disconnect

iMac (20-inch Late 2006) Take Apart —Fan, CPU 11 2Replacing the CPU FanLower the fan onto the white standos in the rear housing. Push it down snug o

iMac (20-inch Late 2006) Take Apart — Inverter 11 3InverterToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove the following:A• cce

iMac (20-inch Late 2006) Take Apart — Inverter 11 4Removing the Inverter 1. Remove the T10 screw located in the bottom left corner on the inverter b

iMac (20-inch Late 2006) Take Apart — Inverter 11 5Replacing the Inverter Connect the1. inverter cable to the DC cable. Tuck the cable under the in

iMac (20-inch Late 2006) Take Apart — Inverter 116Replace the speakers.5. Replace the display panel.6. Replace the IR Board.7. Replace the lower EMI

iMac (20-inch Late 2006) Take Apart —Ambient Light Sensor Board —11 7Ambient Light Sensor BoardToolsA black stick or equivalent tool • Preliminary Ste

iMac (20-inch Late 2006) Take Apart —Ambient Light Sensor Board —11 8Removing the Ambient Light Sensor Board With a black stick, remove the rubber bum

iMac (20-inch Late 2006) Take Apart —Ambient Light Sensor Board —11 9Replace the Ambient Light Sensor BoardPress the sticky side of the ambient light

iMac (20-inch Late 2006) Take Apart — General Information 12Cut the EMI gasket to the edge of the access card. 2. Using packing tape, or something eq

iMac (20-inch Late 2006) Take Apart —Camera and IR Cable 120Cable, Camera and IRToolsNo tools are required to remove the camera cable.Preliminary Ste

iMac (20-inch Late 2006) Take Apart —Camera and IR Cable 121Removing the Camera and IR Cable Remove the two-headed end of the cable from the access h

iMac (20-inch Late 2006) Take Apart —Camera and IR Cable 12 2Replacing the Camera and IR CableInsert the two-headed end of the camera cable through t

iMac (20-inch Late 2006) Take Apart — Bluetooth Antenna 12 3Bluetooth AntennaToolsBlack stick (or other nonconductive nylon or plastic at-blade tool

iMac (20-inch Late 2006) Take Apart — Bluetooth Antenna 12 4Removing the Bluetooth AntennaCarefully peel back the EMI shield and the EMI tape from th

iMac (20-inch Late 2006) Take Apart — Bluetooth Antenna 12 5Replacing the Bluetooth AntennaPosition the antenna board into the rear housing, with the

iMac (20-inch Late 2006) Take Apart — Bluetooth Antenna 126

iMac (20-inch Late 2006) Take Apart — AirPort Antenna 127AirPort AntennasToolsRemoving the wireless antenna requires using the following tools:Flat-b

iMac (20-inch Late 2006) Take Apart — AirPort Antenna 128Removing the AirPort Extreme AntennasTo remove the left antenna, carefully peel back the EMI

iMac (20-inch Late 2006) Take Apart — AirPort Antenna 129Remove any other tape that secures the antenna cables to the rear housing. Pull the antenna

iMac (20-inch Late 2006) Take Apart — General Information 13Bend the card at a slight angle at the top to make sure the card makes contact with each

iMac (20-inch Late 2006) Take Apart — AirPort Antenna 130Replacing the AirPort Extreme AntennasLocate the antenna mounting channel inside the left an

iMac (20-inch Late 2006) Take Apart —Clutch 131Clutch MechanismToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove the following:A•

iMac (20-inch Late 2006) Take Apart —Clutch 13 2Removing the Clutch Remove the EMI tape attached along the top and bottom sides of the clutch mechani

iMac (20-inch Late 2006) Take Apart —Clutch 133Stand up the unit, to access the clutch-to-stand mounting screws. 3. 4. Using a T10 torx screwdriver,

iMac (20-inch Late 2006) Take Apart —Clutch 134Replacing the ClutchMake sure the stand is erect and the end of the stand is inserted through the moun

iMac (20-inch Late 2006) Take Apart —Chassis 13 5ChassisToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove the following:A• ccess

iMac (20-inch Late 2006) Take Apart —Chassis 13 6Part Location

iMac (20-inch Late 2006) Take Apart —Chassis 13 7Removing the Chassis Using a T10 screwdriver, remove 12 self-tapping screws from the chassis, and re

iMac (20-inch Late 2006) Take Apart —Chassis 13 8Replace the ChassisPosition the chassis on the rear housing as shown and install 12 self-tapping mou

iMac (20-inch Late 2006) Take Apart —Rear Housing 13 9Rear HousingToolsNo tools are required to remove the rear housing.Preliminary StepsBefore you b

iMac (20-inch Late 2006) Take Apart — General Information 14EMI ShieldingThe iMac enclosure is wrapped in EMI shielding that is easily torn and damag

iMac (20-inch Late 2006) Take Apart —Rear Housing 140Part LocationRemoving the Rear Housing When all the parts are removed, you are left with the rea

iMac (20-inch Late 2006) Take Apart —Rear Housing 141Replace the display panel.12. Replace the IR Board.13 . Replace the lower EMI shield.14. Replace

iMac (20-inch Late 2006) Take Apart —Stand 142StandToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove everything, including the cha

iMac (20-inch Late 2006) Take Apart —Stand 143Removing the Stand Stand up the unit, to access the clutch-to-stand mounting screws. 1. Using a T10 tor

iMac (20-inch Late 2006) Take Apart —Stand 14 4Replacing the StandMake sure the stand is erect and the end of the stand is inserted through the mount

iMac (20-inch Late 2006) Take Apart —Stand 145

iMac (20-inch Late 2006) Take Apart —Stand 146Cable, AC/DC SATA, Inverter PowerToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove t

iMac (20-inch Late 2006) Take Apart —Stand 147Part Location

iMac (20-inch Late 2006) Take Apart —Stand 14 8Removing the Cable Remove at least two chassis screws (shown) along the bottom. Slide the cable out fr

iMac (20-inch Late 2006) Take Apart —Stand 149Replacing the CableReplace the cable in the rear housing. Route the cable under the chassis, below the

iMac (20-inch Late 2006) Take Apart — General Information 15Lower EMI ShieldEMI tape covers the top and sides of the display panel, and the lower EMI

 Service Source© 2006 Apple Computer, Inc. All rights reserved.TroubleshootingiMac (20-inch Late 2006)

iMac (20-inch Late 2006) Troubleshooting — General Info 151General InformationSerial Number LocationiMac (20-inch Late 2006) serial numbers are locat

iMac (20-inch Late 2006) Troubleshooting — General Info 152Power On Self Test (POST)Intel-based Macintosh computers such as the iMac (20-inch Late 20

iMac (20-inch Late 2006) Troubleshooting — General Info 153How to Reset the System Management Controller (SMC)The System Management Controller (SMC)

iMac (20-inch Late 2006) Troubleshooting — General Info 154Diagnostic LEDsThe iMac (20-inch Late 2006) has three built-in diagnostic LEDs and a front

iMac (20-inch Late 2006) Troubleshooting — General Info 155LED #3Indicates that the computer and the LCD display are communicating. This LED will be

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 156Symptom ChartsHow to Use the Symptom ChartsThe Symptom Charts included in this chapter w

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 157Power IssuesNo Power. The iMac will not turn on. The display remains black and there are

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 158the computer light up. When the main logic board and LCD panel communicate to deliver vi

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 159 Yes: Put the computer to sleep from the Apple menu and wake the computer again to test.

iMac (20-inch Late 2006) Take Apart — General Information 16When properly repaired, all edges shown below will be wrapped by EMI tape, and the tape s

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 160again and conrm that front LED is reliably going o. If the computer still has no video

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 161

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 162Open the Energy Saver System Preferences and temporarily set the display to sleep after

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 163DisplayThe display does not remain in its intended position when tilted.The iMac (20-inc

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 164When displaying a single color over the screen area, the LCD panel shows one or more pix

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 165Hard DriveFlashing question mark, or an alternating question mark and Mac OS (face or a

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 166System hangs during normal startup processBoot from the system CD that came with the com

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 167Optical Drive CDs or DVDs don’t show up on the Desktop.Select Preferences from the Finde

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 168Select System Preferences from the Apple menu and open the CDs & DVDs preferences 2.

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 169The computer won’t burn discs.Check whether the drive can read CDs and DVDs normally. Pe

iMac (20-inch Late 2006) — What’s New 17What’s New13 December 2007Troubleshooting---> No Video--> Symptom 2: No Video, Boot Chime Heard, White

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 170No: Replace the optical drive. Does it burn correctly now? Yes: Problem solved. No:

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 171Optical disc constantly ejectsDisconnect all peripheral devices, especially the mouse in

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 172Fan SoundFans running at full speed after the computer turns onThe customer may have ent

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 173The sound is always present: The normal functioning of the hard drive and optical drive

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 174article 152349, “Replacing a disk before it fails.”Shut down the computer, remove the po

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 175Determine that this noise is related to the computer by removing and shutting down all 2

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 17 6AirPortNot able to connect wirelessly with AirPort1. From the Apple menu, choose About

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 17 7BluetoothBluetooth devices won’t sync with my computer1. Make sure the computer has a B

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 17 8IR RemoteRemote won’t communicate with system applications such as iTunes or iPhoto, or

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 17 9IR Sensor/ReceiverSupported applications do not respond to input from the remote contro

iMac (20-inch Late 2006) — What’s New 1812 January 2007The “• No Power” symptom in Troubleshooting has been updated. If your computer won’t turn on

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 180Built-in iSight CameraThe built-in camera is not recognized.Boot the iMac to the desktop

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 181iChat AV connection doctor feature to verify that there is sucient bandwidth to have a

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 182SpeakersCan’t hear sound from the speakers.Disconnect any external microphones, speakers

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 183MouseThe mouse is slow or not tracking smoothlyRefer to Knowledge Base article 93369.The

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 184mouse. If the issue persists with a known good mouse, replace the main logic board.Keybo

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 185My keys are sticky or slow to respond.Try a known good keyboard.1. Open System Preferenc

iMac (20-inch Late 2006) Troubleshooting — Symptom Charts 186USBA USB device doesn’t workPlease unplug all of your USB devices from your iMac except

 Service Source© 2006 Apple Computer, Inc. All rights reserved.ViewsiMac (20-inch Late 2006)

iMac (20-inch Late 2006) — Views 188iMac (20-inch Late 2006)—Upper Exploded ViewFront Bezel, w/camera, 20”922-7875Camera Board922-7833Camera Board/IR

iMac (20-inch Late 2006) — Views 189iMac (20-inch Late 2006)—Lower Exploded ViewFan, Optical Drive922-7298Power Supply AC/DC661-3780Cover, Clutch Mec

iMac (Early 2006 20-inch) Take Apart — Access Door 19Access DoorToolsPhillips #2 screwdriver• ESD-safe workstation and mat• Soft , clean towel or clo

iMac (20-inch Late 2006) Screw Chart 190Screw ChartScrew Chart : iMac (20-inch Late 2006): page 1 Note: Screws are not to scale.922-6800

iMac (20-inch Late 2006) Screw Chart 191922-7010 T6- IR board to IR bracket, - LVDS cable to logic- Bluetooth board to logic-AirPort

iMac (20-inch Late 2006) Screw Chart 192922-7020 T10- Bracket mechanism to chassis

iiiMac (20-inch Late 2006)ContentsTake ApartGeneral Information 6Product View 6Serial Number Location 7Tools Required 9Safety 10Access Tool Modi

iMac (Early 2006 20-inch) Take Apart — Access Door 20Removing the Access DoorRaise the stand and use a Phillips #2 screwdriver, to loosen the two cap

iMac (20-inch Late 2006) Take Apart — Front Bezel 21Front BezelToolsThis procedure requires the following tools:Torx T8 screwdriver• Access card tool

iMac (20-inch Late 2006) Take Apart — Front Bezel 22Removing the Front BezelPosition unit on rear cover with the stand facing you.1. 2. Tilt up the

iMac (20-inch Late 2006) Take Apart — Front Bezel 23This picture shows how the access tool works. Pushing the tool up the vent on the rear cover 4. r

iMac (20-inch Late 2006) Take Apart — Front Bezel 24Repeat step 5 to release the locking latch in the right corner. Again, pull the bezel away as 6.

iMac (20-inch Late 2006) Take Apart — Front Bezel 25Repeat step 7 for the left side. 8. Once the access card has been removed, it is safe to open the

iMac (20-inch Late 2006) Take Apart — Front Bezel 26Swing the bezel up so you can disconnect two cables on the camera board at the top of the 10. bez

iMac (20-inch Late 2006) Take Apart — Front Bezel 27Replacing the Front BezelMake sure the black EMI shielding along the top of the LCD panel is not

iMac (20-inch Late 2006) Take Apart — Front Bezel 28Tuck the cables neatly into the channel on the rear housing. 3. Press the memory ejector levers i

iMac (20-inch Late 2006) Take Apart — Camera Board 29Camera BoardToolsBlack stick • ESD mat, soft , clean towel or cloth• Preliminary StepsBefore you

iiiFan, Hard Drive 103Fan, Optical Drive 107Fan, CPU 110Inverter 113Ambient Light Sensor Board 117Cable, Camera and IR 120Bluetooth Antenna 123

iMac (20-inch Late 2006) Take Apart — Camera Board 30Removing the Camera BoardThe camera board and cables are visible as you lift the front bezel o

iMac (20-inch Late 2006) Take Apart — Camera Board 31With your ngers or black stick, ex the two black tabs forward to release the camera board 4. f

iMac (20-inch Late 2006) Take Apart — Camera Board 32Replacing the Camera BoardPosition the camera board in the plastic bracket. Make sure the ex ca

iMac (20-inch Late 2006) Take Apart — Camera Board 33Reapply the tape across the length of the camera board. 3. Connect the two cables to the camera

iMac (20-inch Late 2006) Take Apart — Camera Board 34Holding the memory ejector levers closed, lower the font bezel down.6. Replace the bezel screws

iMac (20-inch Late 2006) Take Apart — Lower EMI Shield 35Lower EMI ShieldToolsBlack stick (or other nonconductive nylon or plastic at-blade tool).•

iMac (20-inch Late 2006) Take Apart — Lower EMI Shield 36Removing the Lower EMI ShieldCarefully peel the lower EMI shield o the bottom edge of the r

iMac (20-inch Late 2006) Take Apart — Lower EMI Shield 37Replacing the Lower EMI ShieldPosition the lower EMI shield over the bottom of the unit so t

iMac (20-inch Late 2006) Take Apart — IR Board 38IR BoardToolsTorx T6 screwdriver.• Preliminary StepsBefore you begin, remove the following:A• ccess

iMac (20-inch Late 2006) Take Apart — IR Board 39Removing the IR Board1. Disconnect the IR cable and remove the two T6 screws on the IR board. Lift

ivViewsiMac (20-inch Late 2006)—Upper Exploded View 188iMac (20-inch Late 2006)—Lower Exploded View 189Screw Chart 190Screw Chart : iMac (20-inch L

iMac (20-inch Late 2006) Take Apart — IR Board 40Note3. : If you are replacing the IR /camera cable, you must remove the optical drive and disconnec

iMac (20-inch Late 2006) Take Apart — IR Board 41Replacing the IR BoardIf removed, route the IR/camera cable under the IR bracket. 1. Install the IR

iMac (20-inch Late 2006) Take Apart — IR Board 42Replace the lower EMI shield.3. Position the memory eject levers into the closed position.4. Replace

iMac (20-inch Late 2006) Take Apart — Battery 43BatteryToolsThe only tool required for this procedure is a black stick.Preliminary StepsBefore you be

iMac (20-inch Late 2006) Take Apart — Battery 44Removing the BatteryWith a black stick, pry the battery from the battery slot. 1. Replacing the Batt

iMac (20-inch Late 2006) Take Apart — Display Panel 45LCD Display PanelToolsTorx T6 screwdriver.• Torx T10 screwdriver• Black stick (or other noncond

iMac (20-inch Late 2006) Take Apart — Display Panel 46Removing the Display PanelUsing the access tool, a black stick, or your ngers, peel the black

iMac (20-inch Late 2006) Take Apart — Display Panel 473. Using a Torx T6 screwdriver, remove the two LVDS connector screws. Pull the black tab on th

iMac (20-inch Late 2006) Take Apart — Display Panel 48Lift the panel up just enough to see the inverter cables on the left side. 5. Disconnect the

iMac (20-inch Late 2006) Take Apart — Display Panel 49Raise the panel up the rest of the way. Disconnect the two inverter-to-display cables at the 7.

 Service Source© 2006 Apple Computer, Inc. All rights reserved.Take ApartiMac (20-inch Late 2006)

iMac (20-inch Late 2006) Take Apart — Display Panel 50Note9. : If replacing the display panel, remove the lower EMI shield, the display panel mounti

iMac (20-inch Late 2006) Take Apart — Display Panel 51Replacing the Display PanelReplace the LVDS cable on the rear of the display panel.1. If remove

iMac (20-inch Late 2006) Take Apart — Memory 52MemoryToolsPhillips #2 screwdriver• ESD mat, soft , clean towel or cloth• Preliminary StepsBefore you

iMac (20-inch Late 2006) Take Apart — Memory 53Removing the MemoryAfter removing the access door, touch the metal frame around the memory compartment

iMac (20-inch Late 2006) Take Apart — Memory 54Replacing the MemoryMake sure the DIMM levers are all the way open. 1. With the computer face down, or

iMac (20-inch Late 2006) Take Apart — Memory 55

iMac (20-inch Late 2006) Take Apart — Speakers 56SpeakersToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove the following:A• ccess

iMac (20-inch Late 2006) Take Apart — Speakers 57Removing the Speakers1. Using a T10 torx screwdriver, remove the screws from the left and right spe

iMac (20-inch Late 2006) Take Apart — Speakers 58If necessary, disconnect the hard drive cable (to the left of the IR bracket) from the logic 3. boar

iMac (20-inch Late 2006) Take Apart — Speakers 59Replacing the SpeakersConnect the speaker cable to the logic board. 1. Install the speakers and rout

iMac (20-inch Late 2006) Take Apart — General Information 6General InformationProduct View

iMac (20-inch Late 2006) Take Apart — AirPort Extreme Card 60AirPort Extreme CardToolsTorx T6 screwdriver• Preliminary StepsBefore you begin, remove

iMac (20-inch Late 2006) Take Apart — AirPort Extreme Card 61Removing the AirPort Extreme Card1. Disconnect the two AirPort antennas and remove the

iMac (20-inch Late 2006) Take Apart — AirPort Extreme Card 62Replacing the AirPort Extreme CardSee the following section on compatibility to order th

iMac (20-inch Late 2006) Take Apart — AirPort Extreme Card 63To locate the EEE code on the logic board, locate the memory slot inside the computer. L

iMac (20-inch Late 2006) Take Apart — AirPort Extreme Card 64iMac Model Logic Board Part #Logic Board EEE CodeAirPort Extreme Card Part #AirPort Extr

iMac (20-inch Late 2006) Take Apart — Bluetooth Board 65Bluetooth CardToolsTorx T6 screwdriver• Preliminary StepsBefore you begin, remove the followi

iMac (20-inch Late 2006) Take Apart — Bluetooth Board 66Removing the Bluetooth Board1. Using a T6 torx screwdriver, remove the two screws on the Blu

iMac (20-inch Late 2006) Take Apart — Bluetooth Board 67Replacing the Bluetooth BoardPress the Bluetooth board onto the logic board connector. 1. Co

iMac (20-inch Late 2006) Take Apart — Optical Drive 68Optical DriveToolsTorx T10 screwdriver• Torx T6 screwdriver• Needlenose pliers (with teeth)• Pr

iMac (20-inch Late 2006) Take Apart — Optical Drive 69Removing the Optical Drive1. Remove the two T6 wafer head screws from the optical drive ex ca

iMac (20-inch Late 2006) Take Apart — General Information 7Serial Number Location On the bottom of your iMac stand, you’ll nd a label with the seria

iMac (20-inch Late 2006) Take Apart — Optical Drive 70Locate the black tabs at each side of the plastic optical drive mounting bracket. Starting at 3

iMac (20-inch Late 2006) Take Apart — Optical Drive 71While avoiding the logic board, grasp the tab with needlenose pliers, and ex the tab toward 4.

iMac (20-inch Late 2006) Take Apart — Optical Drive 72This photo shows the optical drive out of the computer so you can visualize how the clips 5. mo

iMac (20-inch Late 2006) Take Apart — Optical Drive 73If replacing the optical drive, disconnect the sensor cable from the optical sensor located on

iMac (20-inch Late 2006) Take Apart — Optical Drive 74Replacing the Optical Drive1. Install the ex cable to the optical drive with two T6 screws. I

iMac (20-inch Late 2006) Take Apart — Optical Drive 75Connect the optical sensor cable to the logic board. Route the sensor cable under the optical 3

iMac (20-inch Late 2006) Take Apart — Hard Drive 76Hard DriveToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove the following:A• c

iMac (20-inch Late 2006) Take Apart — Hard Drive 77Removing the Hard Drive1. Remove the two T10 screws attaching the hard drive to the DC/DC inverte

iMac (20-inch Late 2006) Take Apart — Hard Drive 78Holding the drive by the metal bracket, pull the hard drive toward the inverter and then up 3. to

iMac (20-inch Late 2006) Take Apart — Hard Drive 795. If you are replacing the hard drive, transfer the temperature sensor, mounting pins, and the m

iMac (20-inch Late 2006) Take Apart — General Information 8What’s New on the iMac (20-inch Late 2006)?Logic boardIntel Core 2 Duo Processor running a

iMac (20-inch Late 2006) Take Apart — Hard Drive 80Replacing the Hard DriveAttach the hard drive sensor and sensor cable to the side of the hard driv

iMac (20-inch Late 2006) Take Apart — Hard Drive 81Route the hard drive sensor cable under the metal chassis. Connect the sensor cable to the 3. logi

iMac (20-inch Late 2006) Take Apart — Hard Drive 82Secure the two T10 screws on the hard drive mounting bracket to the inverter board. 5. Replace the

iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 83Power SupplyToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove the follo

iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 84Removing the AC/DC Power Supply WARNING: The AC/DC power supply PCB remains powered up wh

iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 85Disconnect the two cables; the inverter cable on the left and the AC-DC power supply to AC

iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 86Replacing the AC/DC Power SupplyWARNING: The AC/DC power supply PCB remains powered up whe

iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 87Connect the AC-DC power supply cable to the inverter on the left. Reconnect the power 1. s

iMac (20-inch Late 2006) Take Apart —Power Supply, AC/DC 88Replace the logic board.4. Replace the display panel.5. Replace the lower EMI shield.6. Re

iMac (20-inch Late 2006) Take Apart —Logic Board 89Logic BoardToolsTorx T10 screwdriver• Torx T6 screwdriver• Preliminary StepsBefore you begin, remo

iMac (20-inch Late 2006) Take Apart — General Information 9Tools RequiredThe following tools are required to service the computer. Note that a specia

iMac (20-inch Late 2006) Take Apart —Logic Board 90Removing the Logic Board Disconnect the eight cables from the connectors on the logic board. 1. 2

iMac (20-inch Late 2006) Take Apart —Logic Board 913. At the top of the heatsink, remove the two T6 screws that attach the logic board support brack

iMac (20-inch Late 2006) Take Apart —Logic Board 92Replacing the Logic BoardReplacement Note: iMac Firmware Update 1.2 (or later) RequiredFor proper

iMac (20-inch Late 2006) Take Apart —Logic Board 93Make sure the hard drive sensor and the sensor cable are attached to the side of the hard 5. drive

iMac (20-inch Late 2006) Take Apart —Logic Board 94Using a T10 torx screwdriver, replace the seven screws on the board. Always install the 7. machin

iMac (20-inch Late 2006) Take Apart —Logic Board 95Connect the cables to the connectors on the logic board. 8. Connect the AirPort and Bluetooth a

iMac (20-inch Late 2006) Take Apart —Logic Board 96To locate the EEE code on the logic board, locate the memory slot inside the computer. Locate the

iMac (20-inch Late 2006) Take Apart —Logic Board 97EEE Code TableUse the table below to identify the logic board and AirPort Extreme card EEE codes f

iMac (20-inch Late 2006) Take Apart —Logic Board 98iMac Model Logic Board Part #Logic Board EEE CodeAirPort Extreme Card Part #AirPort Extreme Card E

iMac (20-inch Late 2006) Take Apart —AC Power Inlet 99AC Power InletToolsTorx T10 screwdriver• Preliminary StepsBefore you begin, remove the followin