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Apple 17-INCH LATE 2006 CD Personal Computer User Manual

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1. iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 7 Safety Warning When the iMac is under power be aware that the power supply contains high voltages that pose a potential hazard to your personal safety Never work on or near the power supply with the unit powered on and as a further precaution always make sure the unit is unplugged when working on it with the front bezel removed WARNING HIGH VOLTAGE Text or photographs marked by this symbol indicate that a potential hazard to your personal safety exists from a high voltage source The power supply board is a high voltage source with the unit under power and remains powered up whenever the system is plugged in whether or not the system is turned on Use extreme caution when troubleshooting the system with the front bezel removed Disconnect power to the system before performing maintenance 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 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 wO iMac 17 inch Mid 2006
2. Service Source iMac iMac 17 inch Mid 2006 and iMac 17 inch Late 2006 CD 24 April 2007 2006 Apple Computer Inc All rights reserved iMac Contents General Information 5 Product View 5 Note About Images in This Manual Tools Required 6 Serial Number Location 7 Safety 8 Opening the Computer 9 Access Tool Modification 9 EMI Shielding 12 Lower EMI Shield 13 What s New 16 23 April 2007 16 12 January 2007 16 31 October 2006 16 3 October 2006 16 2 October 2006 16 6 September 2006 16 11 July 2006 17 5 July 2006 17 Take Apart Access Door 19 Memory 21 Front Bezel 24 Camera Board 33 Lower EMI Shield 37 IR Board 39 AirPort Extreme Card 42 Battery 45 LCD Display 48 5 LVDS Display Cable 56 Inverter 61 Speakers 64 Optical Drive 67 Hard Drive 74 Power Supply 79 Logic Board 87 CPU Fan 92 Optical Drive Fan 94 Hard Drive Fan 96 AC Power Inlet 98 Ambient Light Sensor Board 102 Clutch Mechanism 106 AirPort Antenna 110 Camera Cable 113 Chassis 117 Rear Housing 120 Troubleshooting General Information 122 Serial Number 122 Power On Self Test POST 122 DDR Memory 123 How to Reset the System Management Controller SMC 124 Diagnostic LEDs 125 Symptom Charts 127 Power Issues 128 No Video 130 Display 133 Hard Drive 134 Optical Drive 136 FanSound 141 AirPort 144 IRRemote 145 IR Sensor Receiver 146 Built in iSight Camera 147 Speakers 149 Mouse 150 Keyboard
3. iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive Fan 94 Remove the Optical Drive Fan 1 Lift the optical drive fan straight up and off three mounting posts Replace the Optical Drive Fan 1 8 9 Align and install the optical drive fan on three mounting posts Push it down snug onto the posts Replace the logic board Replace the optical drive Replace the hard drive Replace the speakers Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the memory 10 Replace the memory access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive Fan 95 Hard Drive Fan Tools No tools are required to remove the optical drive fan Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield e LCD display e Hard Drive e Optical drive Speakers e Memory e Logic board Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Hard Drive Fan 96 Remove the Hard Drive Fan 1 Carefully pull the hard drive fan cable from under the chassis 2 Lift the hard drive fan straight up and off three mounting posts Replacing the Hard Drive Fan 1 Route the hard drive fan cable under the metal chassis and above the I O ports 2 Align and install the hard drive fan on mounting posts Push it down snug onto the posts 3 Replace the logic board 4
4. The Disable remote control infrared receiver checkbox in the Security pane of System Preferences is NOT checked Make sure the active application works with Apple Remote Apple Remote uses Front Row and from Front Row it can access DVD Player iPhoto iTunes and QuickTime Player Make sure the remote is paired with the computer Access the System Preferences Security pane and check Unpair if available Close the Security pane and re pair the Apple Remote with the computer See Knowledge Base article 302545 1 Use a digital camera to test your Apple Remote If you have a digital camera or DV camera with an LCD display you can use it to see if your Apple Remote is emitting a signal Infrared beams are invisible to the human eye but most digital cameras and video cameras use Charged Coupled Device CCD chips or image sensors that are sensitive to infrared light To use a camera to test your Apple Remote follow these steps Turn on your digital camera or DV camera and remove any lens cover Point your Apple Remote toward the camera lens Press and hold the Menu button on the remote while looking at your camera s LCD display If you see a faint blinking light coming from the Apple Remote in the camera s LCD then the remote is working properly If you don t see any blinking light in the camera s LCD replace the battery in your Apple Remote and then test it again with your computer see iMac G5 iSight How t
5. Access door Front bezel Lower EMI shield LCD display Hard Drive Optical drive Speakers Memory Logic board CPU fan Hard drive fan Optical fan AC Power Inlet Clutch mechanism iMac 17 inch Mid 2006 Late 2006 CD Take Apart Chassis 117 Part Location Removing the Chassis 1 With all the other parts removed use a T10 torx screwdriver to remove the self tapping screws circled below Lift the chassis from the rear housing 922 6850 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Chassis 118 Replacing the Chassis 1 2 3 Position the chassis on the rear housing and install the self tapping mounting screws Replace the clutch mechanism Replace the AC power inlet Replace the three fan fans Replace the power supply Replace the hard drive Replace the optical drive Replace the logic board Replace the speakers Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the memory access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Chassis 119 Tools Rear Housing No tools are required to remove the rear housing in addition to those referenced below Remove and Replace the Rear Housing To remove the rear housing follow steps for removing the parts below Reverse these steps to replace the rear housing Access door Front bezel Lower EMI shield LCD display Hard Drive Optical drive Speakers Memory
6. Access System Preferences and click Security In the Security pane check the following e Make sure Disable remote control infrared receiver checkbox is not checked If Unpair is available in the Security pane of System Preferences another Apple Remote may be paired to the computer pairing allows only one Apple Remote to control the computer To delete a pairing between the remote and the iMac click Unpair You may have to enter your Administrator password to make changes in the Security pane After making sure these features are disabled does the Apple Remote control the machine now Yes Problem resolved No Replace the IR sensor board and retest Refer to the IR Board take apart procedure iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 146 Built in iSight Camera The built in camera is not recognized 1 Boot the iMac to the desktop and launch iChat AV Note You do not need to be connected to a network to use iChat AV to troubleshoot Verify that the correct versions of Mac OS X and iChat AV are installed Reinstall or update software as needed Open the iChat AV preferences and click on the Video icon Verify whether the camera is recognized by the iChat AV software Is the camera recognized Yes the camera is recognized and video preview is normal This indicates the camera is functioning Pull down the Video options from the menu bar and verify that the camera is
7. Logic board CPU fan Hard drive fan Optical fan AC Power Inlet Clutch mechanism Chassis Ambient Light Sensor iMac 17 inch Mid 2006 Late 2006 CD Take Apart Rear Housing 120 Service Source Troubleshooting iMac 17 inch Mid 2006 and iMac 17 inch Late 2006 CD 2006 Apple Computer Inc All rights reserved General Information Serial Number iMac serial number is located on the bottom of the computer stand Power On Self Test POST Intel based Mac computers rely on a combination of tones and blinking LEDs to display Power On Self Test POST error codes If the computer detects out of specification or no SDRAM or the RAM installed does not meet the appropriate specifications the screen will remain black but the power LED on the front of the computer will blink once per second to signal the error This error condition may be due to physically damaged RAM installing the incorrect type of RAM or not having RAM installed Some RAM may appear to pass the Power On Self Test POST but still cannot be used by the operating system In this case the computer will display a gray screen sound three tones and blink the power LED on the front of the computer three times pause and repeat the blinking until the computer is turned off The solution to both of these situations is to first re seat the memory and test the computer again If the memory fails the POST test again try memory that has been ver
8. Replace the optical drive 5 Replace the hard drive 6 Replace the speakers 7 Replace the display panel 8 Replace the lower EMI shield 9 Replace the front bezel 10 Replace the memory 11 Replace the memory access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Hard Drive Fan 97 AC Power Inlet Tools Removing the AC power inlet requires using the following tools Torx T10 screwdriver magnetized Preliminary Steps Before you begin follow steps for removing the following Access door Front bezel Lower EMI shield LCD display Hard Drive Optical drive Speakers Memory Logic board Hard drive fan Part Location iMac 17 inch Mid 2006 Late 2006 Take Apart AC Power Inlet 98 Removing the AC Line Filter 1 Using a torx T10 screwdriver remove the three self tapping screws from the power inlet 2 Using a torx T10 screwdriver remove the machine screw from the power inlet ground cable 922 6800 922 7069 x1 3 Peel the EMI tape off the power inlet 4 Disconnect the power inlet to power supply cables and unlace the power inlet cable from beneath the chassis iMac 17 inch Mid 2006 Late 2006 Take Apart AC Power Inlet 99 Replacing the AC Line Filter 1 2 3 Install the AC power inlet on the rear housing screw mounts with three self tapping screws Install the power inlet ground cable to the chassis with a machine screw Route the power
9. enabled The camera must be enabled to function No the camera is not recognized and no video preview is visible This indicates the camera may not be functioning properly Open the iMac and inspect the camera board inside the front bezel and the attached cable Reseat the cable on the camera board and check the other end of the camera cable connections to the logic board The camera cable connectors are on the right side of the logic board below the optical drive and to the right of the fan Go on to the next step if this didn t solve your problem Replace the camera board located inside the front bezel Replace the camera cable If the iSight camera still doesn t appear in System Profiler on the USB bus after replacing the camera board or camera cable replace the logic board Camera recognized but no video 1 2 Verify that the lens assembly for the iSight camera located in the top middle of the front bezel is not obstructed by anything including Post It notes or other objects Replace the camera board in the front bezel and retest Camera image quality poor The built in camera is recognized by iChat AV and other supported video applications however the image quality is poor 1 Verify that the lens assembly for the iSight camera is clean Fingerprints and other contaminants can affect image quality Clean the lens using a lint free lens cleaning cloth being while being careful not to scratch the lens Verify th
10. 151 Error Beep s 152 USB 153 Views Upper Exploded View 156 Lower Exploded View 157 Screw Chart 158 Screw Chart Page 1 158 Screw Chart Page 2 159 General Information Product View gt Note About Images in This Manual Because a pre production model was used for most of the images shown in this manual you may notice small differences in appearance between the image pictured and the computer you are servicing However although the appearance differs the steps and sequence are the same unless noted iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 5 Tools Required The following tools are required to service the computer Note that a special access card part 922 7172 is required to open the front bezel ESD safe workstation and mat Soft clean towel or cloth to protect the display and removed parts from scratches e Access card part 922 7172 e Black stick or other nonconductive nylon or plastic flat blade tool Phillips 1 screwdriver Phillips 2 screwdriver Torx T8 screwdriver magnetized Torx T6 screwdriver magnetized Torx T10 screwdriver magnetized Flat blade screwdriver iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 6 Serial Number Location iMac serial numbers are located on the bottom of the computer stand Note iMac computers using Intel processors will not have the G5 listed in the configuration as shown below
11. 17 inch Mid 2006 Late 2006 CD Take Apart Display Panel 48 Removing the LCD Display 1 Using the black stick or access tool carefully peel back the EMI shielding from the left right and bottom edges of the computer 2 Using a Torx T6 screwdriver remove the two LVDS cable connector screws Disconnect the LVDS display cable from the logic board Below the LVDS connector disconnect the inverter cable from the logic board 922 7010 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Display Panel 49 3 Peel the EMI tape away from each side of the panel Using a Torx T10 screwdriver remove the four panel mounting screws 922 7023 oT 4 Pivot the panel up as shown then carefully peel the top edge of the panel away from the EMI shield iMac 17 inch Mid 2006 Late 2006 CD Take Apart Display Panel 50 Note If replacing a bad LCD display you will also need to remove the lower EMI shield if still attached the display panel mounting brackets and the LVDS cable as follows 5 If attached peel the lower EMI shield off the bottom edge of the display panel 6 Using a torx T10 screwdriver push the tape aside and remove two screws from the left side panel mounting bracket Repeat for the other side pe 92 7158 7 Peel back the tape where shown below and disconnect the two white inverter to display cable connectors iMac 17 inch Mid 2006 Late 2006 CD Take Apart Display
12. DVD Open DVD Player 4 3 Check that the drive can read discs normally Insert an audio CD and check whether it shows up on your desktop or launches iTunes Does the audio CD mount on the desktop or in iTunes Yes The drive seems to read CD discs okay Go on to Step 4 No Make sure the disc is readable by other computers Try other CD discs If none mount or no audio CDs launch iTunes replace the optical drive 4 Eject the audio CD and insert the iMac Software Install and Restore DVDs that came with the customer s computer or insert a DVD movie Does this disc show up on the desktop or does the movie launch DVD Player Yes The computer is reading CD and DVD media This may be related to a specific disc or discs the customer is using and you should examine those discs No The optical disc is reading CD media but not DVD media Try other DVD discs If none mount or movie DVDs do not launch DVD Player replace the optical drive adapter board 5 If after replacing the optical drive adapter board the drive still won t mount any optical media replace the optical drive If the issue persists then replace the logic board iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 137 The computer won t burn discs 1 Check whether the drive can read CDs and DVDs normally Perform the steps above for CDs or DVDs don t show up on the Desktop 2 Try atest burn by creating a Burn Folder as follows
13. EMI shield e LCD display e Hard Drive if you feel it necessary e Optical drive Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Cable 113 Removing the Camera Cable 1 2 wy Disconnect the two camera board cables from the logic board Disconnect the camera cables and pull the cable through the access hole at the top of the EMI shield Remove the camera cable from the rear housing T wr iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Cable 114 Replacing the Camera Cable 1 Insert the camera cables through the access hole in the upper EMI shield Replace any Kapton tape or EMI grounding tape The EMI tape should secure the cable to the metal chassis h a a DA i AILA me A AARAA JEL 2 Route the camera cable around the hard drive and under the chassis as shown Connect the two cables to the connectors on the logic board iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Cable 115 Replace the hard drive if removed Replace the optical drive Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the memory access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Cable 116 Chassis Tools Removing the chassis requires using the following tools Torx T10 screwdriver magnetized Preliminary Steps Before you begin follow steps for removing the following
14. Mid 2006 Late 2006 CD Take Apart Clutch 108 Replace the Clutch 1 Make sure the stand is erect and the end of the stand is inserted through the mounting hole in the rear housing 2 Position the clutch on the stand with the spring at bottom right Install the four long clutch to stand mounting screws 3 Adjust the clutch so that its chassis mounting holes align and install the four machine screws that secure the clutch to the chassis 4 Replace the optical drive 5 Replace the hard drive fan 6 Replace the logic board 7 Replace the speakers 8 Replace the display panel 9 Replace the lower EMI shield 10 Replace the front bezel 11 Replace the memory access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Clutch 109 Tools AirPort Antenna Removing the wireless antenna requires using the following tools Flat blade screwdriver Black stick or other nonconductive nylon or plastic flat blade tool Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield e LCD display e Hard Drive e Optical drive e Speakers e Memory e Logic board e CPU fan Part Location be IP i es ie i ne aE Wi ik i 4 tae J_ ie 3b aa ee iMac 17 inch Mid 2006 Late 2006 CD Take Apart AirPort Antenna 110 Removing the AirPort Extreme Antenna 1 Carefully peel back the tape circle
15. Panel 51 8 To access the LVDS cable connector peel back the black mylar tape that partially covers the LVDS connector 9 Remove the tape securing the LVDS connector to the panel connector iMac 17 inch Mid 2006 Late 2006 CD Take Apart Display Panel 52 10 Pinch together the connector locking levers and disconnect the LVDS cable connector 11 Return the panel to Apple iMac 17 inch Mid 2006 Late 2006 CD Take Apart Display Panel 53 Replacing the LCD Display 1 Replace the LVDS cable on the rear of the display panel 2 Secure the LVDS cable with tape 3 If you are replacing the display a piece of black mylar is enclosed in the box with the display module The dotted lines below show the correct placement of the mylar Note The LVDS locking lever on one side should be covered by the mylar when positioned correctly iMac 17 inch Mid 2006 Late 2006 CD Take Apart Display Panel 54 4 Replace the right panel mounting bracket on the display panel with two screws De 5 Replace the left bracket on the display panel with two screws ol 6 Connect the two inverter to display cable connectors and tape them to the back of the 922 7158 display panel Tape the middle inverter cable to the back of the display as well 7 Turn over the panel If the lower EMI shield was removed reattach the lower EMI shield across the bottom of the panel 8 Position the panel into the rea
16. SMC and then test to see if the fans still exhibit the issue Boot to the EF1 tests of the latest version of Apple Service Diagnostic for iMac This will test the fans and thermal input of the sensors If the tests fail replace the component s indicated by the test Replace the optical drive temperature sensor Replace the hard drive Replace the logic board iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 143 AirPort Not able to connect wirelessly with AirPort 1 From the Apple menu choose About this Mac 2 Click on More Info System Profiler should open 3 In System Profiler in the column on the left look under Network for a line called AirPort Card Select that line 4 Does the section to the right say No Information Found Yes The computer doesn t realize it has an AirPort card installed Go to step 5 No The iMac recognizes that it has an AirPort card installed Go to step 6 5 Remove the front bezel lower EMI shield and two card mounting screws and reseat the AirPort card Re install the two card mounting screws and check System Profiler again to see if the computer sees the AirPort card Does it recognize the card now Yes Problem solved Replace the lower EMI shield and front bezel and re test the system to verify that the original symptom is resolved No Replace the AirPort card Refer to the Take Apart section for AirPort Card If the issue persists after replacing
17. Take Apart Memory 22 Replacing the Memory T 2 Make sure the DIMM levers are all the way open With the computer face down orient the DIMM with the notch on the left 3 4 5 With your fingers press the DIMM fully into the slot until you hear a click After inserting the memory fold the DIMM levers closed There will be a slight resistance and you will hear a click when they fold into the closed position Replace the access door on the memory compartment Use a Phillips 2 screwdriver to tighten the captive screws on the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Memory 23 Front Bezel Tools Access card tool 922 7172 Torx T8 screwdriver Preliminary Steps Before you begin follow steps for removing the access door and the memory Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 24 Removing the Front Bezel 1 With the bottom facing toward you use a T8 torx screwdriver to remove the four bezel mounting screws Note The screw to the right of the door is longer Note Shown in the order they were removed 922 7011 short 922 7749 long F N 2 Stand the computer upright 3 Located the access card tool Bend the upper quarter of the access tool card slightly to engage the front bezel latches Note Refer to Access Tool Modification in the General Information chapter if the bezel is difficult to open
18. To switch to the US keyboard Open System Preferences Click on the International icon Click on the Input Menu near the top of the screen Scroll down the list and uncheck any non US keyboard layouts iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 151 6 Close the System Preferences Try typing a few characters Did is solve the problem Yes Problem solved No Replace the keyboard The USB port on my keyboard doesn t work 1 Unplug all devises from your keyboard 2 Plug your Apple mouse into the left USB port on your keyboard Does your mouse work when it s plugged into this port Yes Now plug the mouse into the right port Does it work Yes Try a known good keyboard No Try a known good mouse to rule out the mouse Then go to step 3 No Try a different mouse or keyboard 3 Now unplug the keyboard from the USB port on the back of the iMac and plug the mouse into the port the keyboard had been in Does the mouse work now Yes Replace the keyboard No It appears that your USB port isn t functioning properly Go on to step 4 4 Replace the logic board Error Beep s Refer to Power On Self Test POST covered in the General Information section of this manual iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 152 USB A USB device doesn t work 1 Please unplug all of your USB devices from your iMac except your Apple Keyboard and Apple mouse No
19. WARNING HIGH VOLTAGE Disconnect the short AC power inlet connector on the right side of the power supply board and the power supply to logic board connector at the top of the board T tN ies TE 2 Using a T10 screwdriver Remove the T10 AC power inlet ground to chassis screw 922 7069 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 84 3 Using a T10 screwdriver remove the three self tapping screws on the top and left sides of the power supply board and the one machine screw on the lower right corner of the board OdONND40209Z4 922 7066 4 Remove the power supply from the enclosure 5 Ifyou are replacing the power supply to logic board cable disconnect the cable from the logic board and remove the cable from the enclosure Note To disconnect the cable do the following e Rotate the computer so that the stand is away from you e Locate the power supply connector underneath the logic board e Use a black stick to release the connector iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 85 Replacing the Power Supply Power Supply 661 4018 1 WARNING HIGH VOLTAGE Position the power supply loosely in its mounting location Connect the power supply to AC power inlet cable Tuck the cable beneath the chassis and away from the hard drive bay Connect the power supply to logic board cable to the underside of the logic board Install the fou
20. by running CPU intensive applications such as iTunes Yes This is normal operation and none of the fans require replacement No If the fan activity does not coincide with CPU usage the sound you re hearing may not be fan activity Go to the Next Step The normal functioning of the hard drive and optical drive will generate additional whirring and scratching noises that may be audible We can isolate these noises by booting the computer to the iMac Install Mac OS X Install Disc 1 Place the disc in the drive and restart your machine while holding down the C key as the machine starts up Once at the Installer window choose Open Disk Utility from the Installer Menu Once Disk Utility is open select the system s hard drive and on the toolbar choose Unmount Note if the drive has multiple partitions unmount each of these partitions This will spin down the hard drive The optical drive will also be busy at this time wait a moment for the optical drive to spin down also and then listen to the machine Is the sound still present Yes With the hard drive and optical drive inactive all you should be hearing are the fans in the machine While booted to the CD these fans should be running at a lower level since CPU activity is low with both drives inactive Fan sound that includes objectionable ticking whistling or squealing may require further investigation and or replacement of the particular fan Go on to the next step
21. comes on momentarily or stays Off Replace the Power Supply 9 At this point in the Power On process you should hear a boot chime and see the front LED on the computer light up When the main logic board and LCD panel communicate to deliver video the front LED should go off and LED 3 should be on Does the Front LED go off Yes The LCD and main logic board have communicated If there is no picture on the display follow No Video troubleshooting No Your logic board is not communicating with LCD panel Go on to the next step 10 Check to see if LED 3 is On or Off LED 3 is On The logic board is communicating with LCD panel Follow No Video troubleshooting LED 3 is Off The logic board is not communicating with LCD panel Reseat the LVDS cable and test again If the issue persists replace the main logic board Audible buzzing whining or ticking noise The iMac contains several mechanical devices such as motors and fans that may make audible buzzing ticking or whining noises when they are operating in a normal manner The sounds will vary depending on how the system is used When troubleshooting abnormal noises try the following 1 Verify that the computer is running a supported version of the Mac OS X operating system If an earlier version of the operating system has been installed then the fans may run at excessive speeds 2 Determine that this noise is related to the computer by removing and shuttin
22. front bezel to optical drive 2 iMac 17 inch Mid 2006 Late 2006 CD Views 159 iMac 17 inch Mid 2006 Late 2006 CD Views 160
23. iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 25 4 This picture is intended to show how the access tool disengages the latch Pushing the tool up the vent on the rear cover releases the latch on the inside of the front bezel Refer to the next step for the procedure 5 Start on the left side looking from the back of the unit Insert the card to disengage the latch Squeeze the top of the bezel that will help take pressure off of the latch and enable it to open easier As the bezel releases pull the bezel away from the rear housing iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 26 6 Repeat step 5 to release the locking latch in the right corner Again pull the bezel away as the card releases the latch 7 If the bezel won t release pull the bottom of the bezel out a bit and insert the access card again iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 27 8 Repeat step 7 for the left side 9 Once the access card has been removed it is safe to open the bezel Position the unit on an ESD mat with the bottom facing toward you Caution Make sure the memory levers are closed and not protruding from the bezel when removing the bezel iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 28 10 Lift the bottom of the front bezel straight up to remove it and swing the bezel over onto its top edge so you can disconnect two cables a
24. inlet cable beneath the chassis as shown in the photo above and connect it to the power supply Using EMI tape securely tape the top and bottom edges of the AC power inlet to the rear housing Replace the hard drive fan Replace the logic board Replace the optical board Replace the hard drive Replace the speakers Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the memory Replace the memory access door iMac 17 inch Mid 2006 Late 2006 Take Apart AC Power Inlet 100 iMac 17 inch Mid 2006 Late 2006 Take Apart AC Power Inlet 101 Ambient Light Sensor Board Tools No tools are required to remove the ambient light sensor board Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield e LCD display e Hard Drive e Optical drive Speakers e Memory e Logic board Part Location iMac 17 inch Mid 2006 Late 2006 Take Apart ALS Board 102 Removing the Ambient Light Sensor Board 1 Remove the rubber bumper from between the chassis and the board 2 With a black stick pry the ambient light sensor board from the frame iMac 17 inch Mid 2006 Late 2006 Take Apart ALS Board 103 Replacing the Ambient Light Sensor Board 1 Press the sticky side of the ambient light sensor board to the bottom inside edge of the rear housing 2 Insta
25. only Refer to Knowledge Base article 303870 or follow the procedure below An iMac 17 inch Mid 2006 may start up to a black screen with no video It may also occur if you have just changed the brightness of the display If this happens the computer will sound like it s starting up but the display stays black In this case if you hold down the power key to shut the computer down and then try to start it up again the situation would not be resolved 1 Shut down the computer by pressing and holding the power button on the back of the iMac until it turns off Reset the NVRAM The computer should display a grey screen then start normally To prevent it from happening again update the system software to Mac OS X 10 4 8 The update will require that you restart your computer after installing Note If you choose not to install the Mac OS X 10 4 8 software update the following steps will also prevent the issue from occurring again From the Apple menu choose System Preferences Choose the Displays pane of System Preferences Temporarily select a resolution other than the 1440 x 900 native resolution Switch back to your preferred resolution and close System Preferences Display is tinted another color 1 Reset the parameter RAM Press the Command Option P R keys When you keep all the keys held down you will hear the startup chime over and over again about every ten seconds until you let go After you hear the seco
26. reformat the hard drive 3 Check all cable connections to and from the hard drive 4 Replace the hard drive data cable 5 Replace the hard drive 6 Replace the logic board iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 135 Optical Drive CDs or DVDs don t show up on the Desktop 1 Select Preferences from the Finder menu and make sure the option to show CDs DVDs and iPods is checked in the General window as shown below eA General g Lal El General Labels Sidebar Advanced b Show these items on the Desktop v Hard disks M CDs DVDs and iPods Vv Connected servers New Finder windows open A Home E Always open folders in a new window Open new windows in column view vi Spring loaded folders and windows Delay _ _ Short Medium Long Press Space Bar to open immediately iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 136 2 Select System Preferences from the Apple menu and open the CDs amp DVDs preferences window Make sure that audio CDs are set to launch iTunes and movie DVDs set to launch DVD Player when those media are inserted as shown below eA CDs amp DVDs lt ShowAll Q When you insert a blank CD Ask what to do B When you insert a blank DVD Ask what to do k When you insert a music CD J Open iTunes 4 When you insert a picture CD amp Open iPhoto H3 When you insert a video
27. removing the following e Access door e Front bezel e Lower EMI shield e LCD display e Hard Drive iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 79 Part Location Version 1 Power Supply 661 4018 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 80 About the Power Supply Warning When the iMac is under power be aware that the power supply contains high voltages that pose a potential hazard to your personal safety Never work on or near the power supply with the unit powered on and as a further precaution always make sure the unit is unplugged when working on it with the front bezel removed WARNING HIGH VOLTAGE Text or photographs marked by this symbol indicate that a potential hazard to your personal safety exists from a high voltage source The AC DC power supply board is a high voltage source with the unit under power and remains powered up whenever the system is plugged in whether or not the system is turned on Use extreme caution when troubleshooting the system with the front bezel removed e Disconnect power to the system before performing maintenance Don t work alone In the even of an electrical shock it is important to have another individual present who can provide assistance e Keep one hand in your pocket when working on any iMac 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 cont
28. service parts for the iMac 17 inch Late 2006 CD iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 16 Logic board 661 4116 Hard Drive 661 4175 Stand 922 7832 Screw T10 Flat head 922 7749 11 July 2006 Updated the screw chart with photos of 922 7654 and 922 7655 5J uly 2006 Introduction iMac 17 inch Mid 2006 Troubleshooting LEDs on the logic board Logic board dual core 1 83 GHz DC DC board is now incorporated onto the main logic board Power supply 120W single rail 12V One wireless antenna for AirPort No built in Bluetooth All units will have two identical DIMMs installed 2x256MB Configure to order CTO option of 2x512MB and 2x1GB 80 GB hard drive standard 160 GB CTO option Remote control is CTO Slated for the education market iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 17 Service Source Take Apart iMac 17 inch Mid 2006 iMac 17 inch Late 2006 CD 2005 Apple Computer Inc All rights reserved Access Door Tools Phillips 2 screwdriver ESD safe workstation and mat Soft clean towel or cloth Preliminary Steps Before you begin lay the computer down so the panel is face down and the bottom is facing you Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Access Door 19 Removing the Access Door 1 Raise the stand and use a Phillips 2 screwdriver to loosen t
29. the AirPort card replace the logic board 6 Now that we know the iMac recognizes the AirPort card check the antenna If the antenna is not plugged in all the way you may have very short AirPort range 7 Remove the access door front bezel lower EMI shield and the two AirPort card mounting screws Disconnect the card turn it over and reconnect the antenna cable connector to the card Make sure the antenna lead is firmly seated Replace the card and other components and retest 8 If the antenna lead is plugged in properly and the AirPort card is recognized but the problem persists there are a number of other things that could cause issues with wireless networking Refer to Knowledge Base document 106858 for more networking information 9 Replace the AirPort card Refer to Take Apart Airport Card 10 Replace the AirPort antenna Refer to Take Apart AirPort Antenna 11 Replace the logic board Refer to Take Apart Logic Board iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 144 IR Remote Remote won t communicate with system applications such as iTunes or iPhoto or with the optical drive Make sure of the following when using the Apple Remote You are within 30 feet of the front of the computer You have an unobstructed line of sight to the front of the computer You are pointing the lens end of the Apple Remote directly at the front of the computer The computer is powered on and awake
30. 0 Keyboard Certain keys or none of the keys on the keyboard function 1 Unplug all devices from your computer including your mouse and keyboard as well as printer scanner external hard drives and hubs Warning Some devices may require you to perform steps before it is safe to unplug them e g external storage devices Be sure to unplug your hub if you have one Plug your keyboard into the back of your computer firmly and securely Plug your mouse into the back of your computer firmly and securely Take special care to make sure the connector is completely in the socket Go on to step 3 Does your keyboard work now Yes Problem solved No Unplug your keyboard and plug it into another USB slot on the back of your iMac Does it work now Yes Replace the logic board No Unplug your keyboard and plug your mouse into the port the keyboard just occupied Go on to step 4 Does your mouse work now Yes Replace the keyboard No Replace the logic board My keys are sticky or slow to respond 1 2 Try a known good keyboard Open System Preferences Click on the keyboard and mouse icon Adjust the key repeat speed and delay until repeat rate Replace the keyboard When I type strange characters appear on the screen 1 Depending on your iMac s settings a simple keystroke can change your keyboard from English to Japanese This can result in some pretty funny characters showing up when you type
31. 006 CD Take Apart AirPort Card 43 Se 922 7010 Replacing the AirPort Extreme Card 1 2 A Install the AirPort Extreme card into the socket Install the two mounting screws securing the card to the logic board Connect the AirPort antenna cable to the connector closest to the memory slot Replace the lower EMI shield Replace the front bezel Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart AirPort Card 44 Battery Tools The only tool required for this procedure is a black stick Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield Part Location iMac 17 inch Mid 2006 Late 2006 Take Apart Battery 45 Removing the Battery 1 Pry the battery from the battery slot Replacing the Battery 1 Slide the battery with voltage information face up into the battery holder 2 Replace the lower EMI shield 3 Replace the front bezel 4 Replace the access door iMac 17 inch Mid 2006 Late 2006 Take Apart Battery 46 iMac 17 inch Mid 2006 Late 2006 Take Apart Battery 47 LCD Display Tools Torx T10 screwdriver Torx T6 screwdriver Black stick or other nonconductive nylon or plastic flat blade tool Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield Part Location iMac
32. 011 short Install any removed DIMMS after the unit is fully assembled Important Memory DIMMs 922 7749 long must be installed by hand Do not use the memory ejector levers to install memory iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 32 Camera Board Tools The only tool required for this procedure is a T6 screwdriver Preliminary Steps Before you begin follow steps for removing the access door and front bezel Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Board 33 Removing the Camera Board 1 The camera board and cables are visible as you lift the front bezel off the computer 2 Disconnect the camera and microphone cables iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Board 34 3 Using a T6 screwdriver peel back the mylar and kapton tape as necessary and remove the two camera board mounting screws Pull the camera board straight out of the lens aperture in the bezel to remove it 922 7713 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Board 35 Replacing the Camera Board 1 Carefully align and insert the camera lens until it is snug in the bezel aperture eo 2 Install the camera board to the bezel with two mounting screws 922 7713 3 Replace the front bezel 4 Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Camera Board 36 Lower EMI Shield Tool
33. 4786 Rear Cover 922 7657 AC Power Inlet 922 7155 Stand 922 7651 Mid 2006 922 7832 Late 2006 CD iMac 17 inch Mid 2006 Late 2006 CD Views 157 Screw Chart Screw Chart Page 1 iMac 17 inch Mid 2006 Late 2006 CD Note Screws are not to scale 922 6800 922 6842 922 6850 Logie Board korea coven 2 Logic board to rear cover 6 Chassis to rear cover 13 AC power inlet to rear cover 3 922 7001 922 7010 922 7011 110 shorter x3 922 7749 T10 longer P o D Hard drive pins 2 LVDS cable to logic board 2 Front bezel to bottom housing AirPort card to logic board 2 922 7012 922 7018 922 7019 Stand to interconnect Optical drive to optical bezel Hard drive clip to hard drive mechanism 4 4 2 iMac 17 inch Mid 2006 Late 2006 CD Views 158 Screw Chart Page 2 922 7020 922 7023 922 7066 Clutch mechanism to LCD assembly to rear cover Power supply to rear chassis chassis 4 via left and right brackets 4 2 922 7067 922 7068 922 7069 Left speaker to rear cover 1 Right speaker to rear cover 1 AC power inlet ground to chassis 1 922 7158 922 7159 922 7654 Left and right LCD bracket to Power supply to top right Power supply to bottom left LCD 4 corner rear chassis 1 corner rear cover chassis 1 Longer power supply screw 922 7655 922 7656 922 7713 Coming soon De IR board to heatsink 2 Optical direct connect board Camera board to
34. 6 and iMac 17 inch Late 2006 CD 2006 Apple Computer Inc All rights reserved Upper Exploded View iMac 17 inch Mid 2006 and iMac 17 inch Late 2006 CD Lower EMI Shield 922 7653 Camera Board 661 3811 Front Bezel 922 7243 Access Door 922 7246 Right Bracket LCD Display 17 Inch 922 7077 661 4020 Inverter LVDS Cable SS 661 3841 922 7642 E Left Bracket Optical Adapter Boar 922 7078 922 7281 Optical Drive Combc Optical Temp Sensor 922 3999 922 7282 Optical Sensor Cable 922 7644 Power Supply 661 4018 Clip Optical Drive 661 3780 922 7652 Speakers 922 7057 AirPort Extreme Carc 661 3874 SO DIMM SDRAM 661 4021 256 MB 6 661 4035 512 MB 6 661 4036 1 GB 667 Clutch Cover 922 7080 Logic Board 17 Inch 661 4017 Mid 2006 661 4116 Late 2006 CD iMac 17 inch Mid 2006 Late 2006 CD Views 156 Lower Exploded View Optical Drive Fan 922 7062 CPU Fan 922 7641 Hard Drive Fan 922 7643 Hard Drive HD Mounting Bracket 922 7057 661 3943 80 GB 7200 661 4175 160 GB 7200 HD Power Cable 922 7646 Hard Drive Pins HD SATA Cable 922 7001 922 7645 E a Camera Cable Microphone 922 7675 pae Clutch eal 922 7074 Wireless Antenna ___ _ IR Board 922 7649 _ 922 7639 Chassis IR Cable 922 7247 922 7648 Not shown EMI tape 922 5026 EMI tape 922
35. Late 2006 CD Take Apart General Information 8 Opening the Computer Apple authorized desktop certified technicians only should ever remove the front bezel on the iMac When the front bezel is removed be sure to always ground yourself and follow ESD safe repair practices Removing the front bezel requires using a special access card part 922 7172 to release latches located inside the upper corners of the front bezel Slightly bending the upper quarter of the access tool card will help engage the latch more securely As you are inserting the card to disengage the latch you should squeeze the top of the bezel that will help take pressure off of the latch and enable it to open easier Note If the bezel won t open read the next topic Access Tool Modification Once the card has been released it is safe to open the bezel See the Front Bezel Take Apart procedure for more information Access Tool Modification If you wish to modify the access card tool order kit 076 1213 The kit contains an access card and a piece of EMI gasket that can be cut and added to the top of the card The additional thickness on the card will improve the contact with each bezel latch 1 Remove the tape on the gasket to expose the sticky side of the gasket Attach the sticky side of the EMI gasket to the top of the access card iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 9 2 Cut the EMI gasket to the edge of the access
36. No The normal functioning of the hard drive and optical drive will generate additional whirring and scratching sounds that may be audible All of these sounds are normal and do not indicate a failure with the machine If you wish to check the health of the hard drive see Knowledge Base article 152349 Replacing a disk before it fails Shut down the computer remove the power cord and any other connected cables and iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 142 remove the access door front bezel and EMI shield Stand up the computer plug it in and start it up by pressing the external power button As the machine starts up listen carefully to each of the three fans and see if you can locate the fan from which the objectionable ticking whistling or squealing sound is coming The CPU fan is the left most fan the hard drive fan is in the center and the optical drive fan is on the right Can you pinpoint the fan making the sound Yes Replace the noisy fan No If you can hear an objectionable ticking whistling or squealing sound but you cannot identify the source of the sound contact Apple Technical Support Fans are running at a constant high speed If the fans on the system are running at a constant high speed or ramp very quickly to high speed and do not vary once this speed is reached the fans are most likely receiving incorrect thermal input Follow these steps 1 2 Reset the
37. U Fan Tools No tools are required to remove the CPU fan Preliminary Steps Before you begin follow steps for removing the following Access door Front bezel Lower EMI shield LCD display Hard Drive Optical drive Speakers Memory Logic board Part Location He NGS FP 7 iMac 17 inch Mid 2006 Late 2006 CD Take Apart CPU Fan 92 Removing the CPU Fan Le Lift the CPU fan off the white mounting posts wines BEBOT2VHO P E 603 8590 ans Replacing the CPU Fan 1 Align the CPU fan with the two mounting posts in the rear housing and push it straight down onto the posts Note Route the antenna cable under the fan as shown above but pull it aside to the left side when installing the logic board Replace the logic board Replace the optical drive Replace the hard drive Connect the CPU fan cable and the rest of the cables to the logic board Replace the speakers Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the memory Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart CPU Fan 93 Optical Drive Fan Tools No tools are required to remove the optical drive fan Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield e LCD display e Hard Drive e Optical drive Speakers e Memory e Logic board Part Location
38. act 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 cS Mnp oe wO iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 81 Removing the Power Supply Version 1 Power Supply 661 4018 1 WARNING HIGH VOLTAGE Disconnect the AC power inlet connector on the left and the power supply to logic board connector on the right Note The power supply connector is on the underside of the logic board See the next photo for another view of the connector underneath the logic board 2 Rotate the computer so that the stand is away from you Locate the power supply connector underneath the logic board Use a black stick to release the connector iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 82 922 7066 922 7654 S2 in photo 922 7159 S1 in photo 3 4 Using a T8 screwdriver remove the two self tapping screws on the left side of the power supply board and the two machine screws on the right side of the board Note Self tapping screw labeled S1 is longer than self tapping screw S2 M Machine screw S1 Self tapping screw longer S2 Self tapping screw shorter Remove the power supply from the enclosure iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 83 Version 2 Power Supply 661 3780 1
39. and no repair is necessary Important Do not release the specifications to customers Instead inform them that a certain number of subpixel anomalies is considered acceptable and these factors apply to all manufacturers using LCD technology not just Apple products iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 133 Hard Drive Flashing question mark or an alternating question mark and Mac OS face or a folder Note When troubleshooting hard drive problems it is a good idea if possible to back up any important data Some troubleshooting steps may require erasing the contents of the hard drive 1 Boot from the system CD that came with the computer and open Disk Utility Does the hard drive show in Disk Utility Yes Run Repair Disk and Repair Permissions to correct any directory and permissions issues Go on to Step 2 No Go to Step 3 Did Disk Utility successfully repair directory or permissions Yes Restart the computer to the hard drive Go on to Step 3 No Go to Step 3 Did the computer successfully start to the internal Hard Drive Yes Run Apple Hardware Test version 3A108 or later for this machine and return to the customer if it passes No Boot the machine to Apple Hardware Test version 3A108 or later or to Apple Service Diagnostic for iMac version 3S106 or later Did the machine successfully boot to the Diagnostic Yes Run the test suites No Make sure you re using the c
40. at there is sufficient lighting to produce a good quality image Lighting which is comparable to that found in a well lit office will product a good quality image If possible avoid having a brightly lit background Diffused lighting is preferred over direct lighting Launch iChat AV and open the iChat AV preferences Click on the Video tab Is the video quality acceptable Yes The camera is functioning normally The image quality problems may be caused by iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 147 bandwidth limitations when using iChat over the internet Instruct the customer to use the iChat AV connection doctor feature to verify that there is sufficient bandwidth to have a video iChat session without a significant degradation of image quality No The camera may not be functioning normally Replace the camera board in the front bezel and retest Camera recognized but no audio 1 2 Open the System Preferences window and click on Sound Verify that the built in iSight camera has been selected as the device for sound input Verify that the volume settings on the slider bar are appropriate Launch iChat AV and open the iChat AV preferences Click on the Video icon Speak into the microphone while monitoring the microphone level indicator Does the line level meter respond while you are speaking Yes The microphone circuit is functioning correctly Check the preference settings of an
41. card 3 Using packing tape or something equivalent fold the tape over the EMI gasket to attach the gasket to the card iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 10 Bend the card at a slight angle at the top to make sure the card makes contact with each latch Refer to Removing the Front Bezel for the complete procedure iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 11 EMI Shielding The iMac enclosure is wrapped in EMI shielding that is easily torn and damaged To maintain a properly shielded unit you must repair all accidental tears and cracks to the shielding by covering them with EMI tape Order EMI tape part number 922 4786 a long thin strip or 922 5026 short wide strips Cover nicks such as the those shown below with EMI tape Pay particular attention to the EMI shielding inside the rear housing shown below The EMI shield is easily damaged when replacing modules m eo a co Kt iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 12 Lower EMI Shield EMI tape covers the top and sides of the display panel and the lower EMI shield covers the logic board along the bottom of the unit The EMI tape and lower EMI shield are easily damaged when removed and removal is necessary in order to access most components within the unit Should the EMI tape that seals the display or the EMI shield covering the bot
42. ch houses the microphone iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 148 Speakers Can t hear sound from the speakers 1 2 Disconnect any external microphones speakers or headphones Access System Preferences and select Sound In the Sound pane select Output and make sure the Internal speakers are selected as the device for sound output the Output volume is adequate and Mute is not selected Do you have sound now Yes Problem resolved No Go to the next step Reset parameter RAM Press Command Option P R during startup but before Welcome to Macintosh appears Do you have sound now Yes Problem resolved No Go to the next step Plug headphones or external speakers into the Line out headphone port Do you have sound through these devices when plugged in Yes Verify that the speaker cable connector is securely attached to the logic board If the issue persists replace the speakers No Replace the logic board Verify that the speaker cable connector is securely attached to the logic board Do you have sound now Yes Problem resolved No Replace the speakers I hear sound out of only one speaker 1 Are there any external microphones speakers or headphones plugged into the iMac Yes Disconnect any external microphones speakers or headphones Do you hear audio from both of the built in speakers on your iMac Yes Good It looks like the built in speakers are
43. d Replace the AC power cord No Go on to the next step 3 Check the connection of the power cord on both ends Verify that the power cord is securely plugged into both the AC outlet and back of the computer Does the iMac power on now Yes You may have a loose fit to your power cord Replace the AC power cord and test No Go on to the next step 4 Follow instructions in the General Information chapter to reset the SMC Does the iMac power on now Yes Issue resolved No Go on to the next step 5 Remove and reinstall the SO DIMM memory modules Does the iMac power on now Yes Issue resolved No Go on to the next step 6 Remove the RAM access door front bezel and lower EMI shield to gain access to the three diagnostic LEDs See Diagnostic LEDs in the General Information chapter for complete instructions on this procedure 7 Plug the power cord into the iMac and the power cord into the AC outlet Check to see if LED 1 is On or Off LED 1 is On This indicates that the power supply is getting good power from the AC outlet Go on to the next step LED 1 is Off This indicates that either the power inlet assembly or the power supply should be replaced iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 128 8 Press the power button Check to see if LED 2 comes On comes on momentarily or stays Off LED 2 is On The Power Supply is functioning Go on to the next step LED 2
44. d and the EMI backing from the top left inside corner of the rear housing as shown below Peel back just enough EMI backing to access the antenna board Using a flat blade screwdriver pry the antenna board off the rear housing 2 Remove any tape that secures the antenna cable to the rear housing 3 Pull the antenna cable through the access hole in the EMI shield at the top near the antenna board iMac 17 inch Mid 2006 Late 2006 CD Take Apart AirPort Antenna 111 Replacing the AirPort Extreme Antenna 1 Locate the antenna mounting channel inside the left corner of the rear housing and position the antenna board in the channel Compress the sticky side of the antenna board to the housing until securely fastened 2 Route the antenna cable through the EMI shield and on top of the EMI 3 Secure the antenna cable to the housing with two pieces of tape 4 Replace the CPU fan 5 Replace the logic board 6 Replace the DC power supply 7 Replace the optical drive 8 Replace the hard drive 9 Replace the speakers 10 Replace the display panel 11 Replace the lower EMI shield 12 Replace the front bezel 13 Replace the memory access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart AirPort Antenna 112 Camera Cable Tools No tools are required to remove the camera cable Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower
45. e Apart Logic Board 88 3 Rotate the unit so the power supply is in the bottom right corner and the optical drive is on your left With a black stick disconnect the power supply cable on the underside of the logic board 4 Pull the board toward you and slightly lift the board up Note The I O ports fit tightly into the port hole openings on the rear cover You may have to fidget with the board a bit to free the ports from the rear cover Remove the logic board out of the rear housing iMac 17 inch Mid 2006 Late 2006 CD Take Apart Logic Board 89 Replacing the Logic Board 1 Pull all cables up and away from the logic board bay and gently place down the logic board so that all screw holes are aligned with screw mounts in the chassis Replacement Note The logic board should rest on the screw mounts without any binding or bowing if it doesn t adjust any cables that are interfering with the logic board 2 Install the optical drive 3 Secure the logic board by installing the machine screws and then installing three self tapping screws marked with an S iMac 17 inch Mid 2006 Late 2006 CD Take Apart Logic Board 90 Replace the hard drive Replace the speakers Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the memory Replace the memory access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Logic Board 91 CP
46. e In the Finder choose New Burn Folder from the File menu Edit Window New Finder Window N New Folder HEN New Smart Folder iN New Burn Folder Open 0 View Go Open the Burn Folder drag an item inside for testing and click Burn in the upper right corner of the window ene 1 Burn Folder lt u 2 O a ois Burn Folder a Network Macintosh HD si MystV_Demo sitx RBG Desktop e When prompted insert a blank disc and follow the dialog instructions Does the disc burn successfully problem solved fail with an error or is the disc ejected 3 If the disc fails to burn with an error check for these error messages Unknown Error 2147352480 See Knowledge Base article 25480 and 25750 for more information Buffer underrun error See Knowledge Base articles 25480 and 25750 for more information Unknown Error If you see Unknown Error without 21473524807 you will want to see Knowledge Base article 152224 for more information 4 If the blank disc is ejected try another blank disc If the issue persists try another brand and speed of blank media if you re using blank CD media see if this happens with blank DVD media If the drive consistently rejects all blank media or only rejects blank CD media while accepting blank DVD media or vice versa replace the optical drive adapter board and test Does the drive successfully burn to disc after rep
47. e of the plastic optical drive mounting bracket Starting at the release tab that is furthest from the logic board grasp the tab with needlenose pliers and flex the tab toward the optical drive flexible cable Note This graphic shows a different iMac model but the removal procedure is the same for each model Use one finger underneath the edge of the optical drive to gently lift up that corner of the drive NN WS KYU 0530 a By P s Caution Never press down on or grasp the body silver of the optical drive when removing or installing it Depressing the body of the optical drive could damage the mechanism Grasp the optical drive by its mounting bracket only iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive 69 4 Warning iMac main logic boards returned with physical damage such as scratches fractures or broken or missing components caused by improper servicing may be classified as customer abuse When using a tool to release the latches be careful not to apply pressure to the logic board or it may be damaged While avoiding the logic board grasp the tab with needlenose pliers and flex the tab toward the optical drive Use one finger underneath the rear edge of the optical drive to gently tilt up the end of the drive and remove the optical drive out of the housing Note This graphic shows a different iMac model but the removal procedure is the same iMac 17 inch Mid 2006 Late 2006 CD Ta
48. e right speaker iMac 17 inch Mid 2006 Late 2006 CD Take Apart Speaker 65 Replacing the Speakers 1 2 3 Connect the speaker cable connector to the logic board Install the speakers and route the speaker wire above the heatsink and around the fan Secure the right speaker with the shorter of the two mounting screws Secure the left speaker with the longer of the two mounting screws Replace the display panel Replace the EMI shield Replace the front bezel Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Speaker 66 Optical Drive Tools Torx T10 screwdriver magnetized Torx T6 screwdriver magnetized e Needlenose pliers with teeth Preliminary Step Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield e LCD Display Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive 67 Removing the Optical Drive 1 Disconnect the sensor cable from the temperature sensor on top of the optical drive and remove the two T10 screws from the optical drive clip on the logic board 922 6842 2 Note Make sure to use a needlenose pliers with teeth to remove the optical drive The pliers must have a textured surface to properly grasp the optical drive release tabs iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive 68 3 Locate the black tabs at each sid
49. eo signal is being generated Front LED Indicates that the computer has power but no video signal e g the computer is starting up or the display has entered Sleep mode turning off the video signal This LED will pulse when the entire system has entered Energy Saver mode SNOR SS o aan ceg an iN o iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting General Info 126 Symptom Charts How to Use the Symptom Charts The Symptom Charts included in this chapter will help you diagnose specific symptoms related to the product Because cures are listed on the charts in the order of most likely solution try the cures in the order presented Verify whether or not the product continues to exhibit the symptom If the symptom persists try the next cure Note If a cure instructs you to replace a module reinstall the original module before you proceed to the next cure iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 127 Power Issues No Power The iMac will not turn on The display remains black and there are no sounds from the fans or drives 1 Verify the power outlet is good Plug a different device into the socket to ensure there is power or plug the iMac into another outlet Does the iMac power on now Yes Resolved Bad outlet No Go on to the next step 2 Check the power cord Use a known good power cord Does the iMac power on now Yes Your power cord has faile
50. especially the mouse in cases where the disc is constantly ejecting Retest If the issue is resolved reconnect peripherals one at a time until faulty peripheral is identified Try cleaning the disc If the disc is dirty or scratched it may not mount Is the issue resolved Yes Problem solved No Try a different disc If the issue persists go on to the next step Boot from Apple Hardware Test hold down the D key at startup If you can boot to this volume run the Quick and Extended tests Does the unit pass the tests Yes Restart to the internal hard drive and test again No Replace the component s indicated by the test results If you cannot boot to Apple Hardware Test because it ejects go on to step 4 Boot from the system install DVD use Startup Manager hold down the Option key at startup If you can boot from this volume perform an Archive and Install with the Install DVD that came with the computer and test Is the issue resolved Yes Problem solved No If you cannot boot to Apple Hardware Test or to the Install DVD because they eject reseat the optical drive adapter board to the logic board and retest Replace the optical drive adapter board Replace the optical drive Replace the logic board iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 140 Fan Sound Fans running at full speed after the computer turns on The customer may have entered a diagnostic mode that causes
51. evers and disconnect the LVDS cable connector iMac 17 inch Mid 2006 Late 2006 CD Take Apart LVDS Cable 58 Replacing the LVDS Cable 1 Position the LVDS cable on the back of the display panel as shown 2 Connect the LVDS cable connector When connected correctly the locking levers will secure the connector and it cannot be disconnected without depressing the levers 3 Secure the LVDS cable to the panel with one strip of tape Phin 8 iMac 17 inch Mid 2006 Late 2006 CD Take Apart LVDS Cable 59 4 Replace the display panel Note If you are replacing the display a piece of black mylar is enclosed in the box with the display module The dotted lines below show the correct placement of the mylar The LVDS locking lever on one side will be covered by the mylar when positioned correctly 922 7023 5 Replace the lower EMI shield 6 Replace the front bezel 7 Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart LVDS Cable 60 Inverter Tools Removing the inverter requires using a flat blade screwdriver Preliminary Steps Before you begin follow steps for removing the following e Access door Front bezel e Lower EMI shield e LCD Display Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Inverter 61 Removing the Inverter 1 Remove three pieces of tape that secure the inverter cables to the back of the display pa
52. fective memory can prevent the iMac from booting It may be necessary to install known good memory for testing purposes and replace any unsupported or defective SO DIMM s identified during this process Does the computer display video after verifying and or replacing the memory with known good memory Yes Problem solved Verify full system functionality before return the system to the customer No Replace the logic board No Video Boot Chime heard White LED ON Symptom 2 The iMac will turn on the boot chime can be heard a white LED appears on the front bezel and sounds from the fan or drive activity can be heard but the display has no picture or color 1 Check if the computer is sleeping Press the space bar to wake the computer from sleep mode Did the computer wake from sleep Yes Put the computer to sleep from the Apple menu and wake the computer again to test Check Energy Saver setting to see when the computer has been designated to sleep No Continue to next step 2 Reset your computer s PRAM Parameter RAM If your iMac is on turn it off by holding the power button until the unit powers off You should hear the fans go quiet While the computer is off with your left hand hold down the Apple key the Option key next to it and the letter R key on the keyboard When you have these keys all pressed down push the power button with your right hand and then quickly move that hand to hold down the let
53. g down all other devices in the vicinity of the computer that could be causing a sound 3 Eject any media inserted into the optical drive The optical drive will make a variety of normal sounds when accessing the optical media 4 Quit all applications and test the computer again Processor intensive applications may cause the fans to run at a higher RPM and therefore be more audible 5 Boot to the latest version of Apple Service Diagnostic for iMac Mid 2006 and select the EFI test suite by holding down the D key during startup The diagnostic tests fan speeds and thermal sensor functionality Should tests fail replace any parts indicated by the diagnostic 6 Reboot the computer and check the computer again If the noise persists and is unusually loud contact Apple Technical Support iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 129 No Video No Video No Boot Chime White LED ON Symptom 1 The iMac will turn on indicated by the front LED ON but there is NO boot chime and No Video on the display The faint sound of the fans hard drive and optical drive may also be heard 1 Follow instructions in the General Information chapter to reset the SMC Does the computer display video after successfully resetting the SMC Yes Problem solved No Continue to next step 2 Verify that only supported SDRAM memory has been installed and that it has been installed correctly Unsupported and or de
54. he two captive screws that secure the memory access door Remove the access door Replacing the Access Door 1 Make sure the memory ejector tabs are in the closed position before attaching the access door 2 Position the access door on the rear housing over the memory compartment 3 Lift the stand out of the way 4 Use a Phillips 2 screwdriver to tighten the captive screws iMac 17 inch Mid 2006 Late 2006 CD Take Apart Access Door 20 Memory Tools Phillips 2 screwdriver ESD safe workstation and mat Soft clean towel or cloth Preliminary Steps Before you begin lay the computer down so the panel is face down and the bottom is facing you Part Location erie No weren Etteren Ne son TEC baLDHH0 DT raona tan rennt nmpwnnun MILDAN INCETAT Mamaia Cna PWG Np 199 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Memory 21 Removing the Memory Important Always discharge static before you touch any parts such as the memory board To avoid generating static electricity do not walk around the room until you have finished replacing the memory 1 Pull the two levers in the memory compartment toward you Pull HARD If a memory module is installed in the slot pulling the levers will dislodge it Note The levers are used to remove memory not to install memory Always install memory with your fingers 2 Set the memory modules aside iMac 17 inch Mid 2006 Late 2006 CD
55. iMac 17 inch Mid 2006 Late 2006 CD Take Apart IR Board 39 Removing the IR Board 1 Using a Torx T8 screwdriver remove the two IR screws and disconnect the IR cable from the IR board connector Remove the IR board from its mounting bracket 922 7655 Replacing the IR Board 1 Install the IR board and two mounting screws 2 Connect the IR cable to the IR board connector 3 Replace the lower EMI shield 4 Replace the front bezel 5 Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart IR Board 40 iMac 17 inch Mid 2006 Late 2006 CD Take Apart IR Board 41 AirPort Extreme Card Tools The only tool required for this procedure is a Torx T6 screwdriver magnetized Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield Part Location tt iMac 17 inch Mid 2006 Late 2006 CD Take Apart AirPort Card 42 Removing the AirPort Extreme Card 1 Disconnect the antenna cable from the AirPort Extreme card connector and remove the two T6 screws securing the card to the logic board 922 7010 a ly hah aa LB ae lh he a il n n CE E E a A EEEE gt gt ab a os eS ee T kb oe a a M 2 The card will spring up when the screws are removed Grab the card from the connector end pull the card from its socket on the logic board iMac 17 inch Mid 2006 Late 2
56. ic LEDs and a front LED on the main logic board shown below that can help you to troubleshoot the computer To Access the LEDs 1 Follow the take apart instructions to remove the RAM access door front bezel and lower EMI shield 2 Locate the SO DIMM slot and LVDS video connector The three troubleshooting LEDs 1 2 and 3 are located to the right of the LVDS cable connector under a square of black tape Peel back the tape to view the LEDs Note that the LEDs are marked 1 2 3 from left to right as show below An additional front LED is located in an opening at the center of the right speaker as shown below iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting General Info 125 LED 1 Indicates that the trickle voltage from the power supply has been detected by the main logic board This LED will remain ON whenever the iMac Mid 2006 17 inch is connected to a working AC power source The LED will remain on even when the computer has been shut down or put to sleep The LED will turn off only if the AC power source is disconnected or the power supply is faulty LED 2 Indicates that the main logic board has detected proper power from the power supply when the computer is turned on This LED will be ON when the computer is turned on and the power supply is working correctly LED 3 Indicates that the computer and the LCD display are communicating This LED will be ON when the computer is turned on and vid
57. ified to work correctly on another system i e known good or order new memory iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting General Info 122 DDR Memory The iMac computer has two SDRAM slots in the bottom of the computer The iMac ships from the factory with at least 512 MB of DDR2 SDRAM installed as a 256 MB DIMM in the top slot and a 256 MB DIMM in the bottom slot The computer may come with more RAM depending on how the computer was ordered from Apple Although you can install a single SO DIMM it is recommended that memory be installed in matched pairs for improved graphics performance The maximum amount of RAM you can install in the iMac is 2 GB total a 1 GB SO DIMM in each of the two slots You can use small outline dual inline memory modules SO DIMMS of 512 MB or 1 GB that meet all of these criteria PC2 5300 unbuffered e nonparity e 200 pin 667 MHz DDR2 SDRAM Note DIMMs with any of the following features are NOT supported in this iMac registers or buffers PLLs ECG e parity EDO RAM iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting General Info 123 How to Reset the System Management Controller SMC The System Management Controller SMC is a chip on the logic board that controls all power functions for your computer If your computer is experiencing any power issue resetting the SMC may resolve it The SMC controls several functions including Telling the comp
58. itions Yes CPU intensive applications such as iTunes Garage Band DVD Player etc or two or more applications open at once will cause the fans to run at an increased rate making them more noticeable If the sound only occurs when one or more of these applications is running this is normal No If the sound isn t affected by CPU intensive application it may be due to other factors Go on to the next step 2 Is the sound always present or does the sound vary The sound is always present The normal functioning of the hard drive and optical drive will generate additional whirring and scratching noises that may be audible Check whether this iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 141 sound is related to one of the components Go to step 4 The sound varies Under normal conditions rotating blowers will make a slight hum that varies in relationship with their rotational speed and the amount of air that they are moving Let s see if this is indeed the case Go to Next Step Are the fans making a normal humming sound that increases decreases in relation to processor usage As the fans increase their speed to cool the system the sound level will increase Launch the Activity Monitor application included with Mac OS X in the Utilities folder to determine whether the noise corresponds with heavy usage of the CPU Does fan activity increase decrease with the CPU Usage graph in Activity Monitor Check
59. ke Apart Optical Drive 70 5 Lift the rear of the drive and pull the front bezel of the drive straight back and out of the disc opening in the rear housing 6 If replacing a bad optical drive use a T6 torx screwdriver to remove two optical drive board mounting screws Disconnect and keep the board for installation on the replacement drive 922 7656 re 4 Yi am e EN 7 If replacing a bad optical drive also remove the temperature sensor from the top of the drive Discard the sensor the replacement drive comes with a new sensor already installed iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive 71 Replacing the Optical Drive 1 If removed install the optical drive board to the optical drive with two T6 screws 2 Insert the optical drive bezel end first into the opening in the housing Be sure to align the two guide holes in the front bezel with guide posts at each end of the bezel opening 922 7656 R PAK E Ne wW D Yes oe ae Push down on the black mounting bracket to lock the optical drive securely into place on the chassis Caution Never press down on or grasp the body silver of the optical drive when removing or installing it Depressing the body of the optical drive could damage the mechanism Grasp the optical drive by its mounting bracket only 3 Secure the optical drive board to the logic board with the metal mounting clip and two T10 screws 4 Co
60. lacing the optical drive adapter board Yes Problem solved iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 138 No Replace the optical drive Does it burn correctly now Yes Problem solved No Replace the logic board Discs won t insert i Is there a disc already in the drive Yes Eject the disc before inserting another Refer to Knowledge Base article 51008 iMac If You Can t Eject a CD or DVD or Open the Drive Tray If none of these options will eject the disc you may have to disassemble the drive to recover the disc See Knowledge Base article 86382 Macintosh How to Remove a Stuck Disc From a Slot Loading Drive No Reseat the optical drive Perform the Optical Drive procedure in Take Apart to reseat the drive in the mounting aperture and reconnect the optical drive to the logic board After reinstalling the optical drive can you now insert a disc Yes Issue resolved Run diagnostics and return the system to the customer No Replace the optical drive adapter board Yes Problem solved Run diagnostics and trying inserting a disc again After replacing the optical drive adapter board can you insert a disc now Yes Issue resolved Run diagnostics and return the system to the customer No Replace the optical drive iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 139 Optical disc constantly ejects 1 Disconnect all peripheral devices
61. ll the rubber bumper between the back of the ambient light sensor board and the chassis 3 Replace the logic board 4 Replace the optical drive 5 Replace the hard drive 6 Replace the speakers 7 Replace the display panel 8 Replace the lower EMI shield 9 Replace the front bezel 10 Replace the memory 11 Replace the memory access door iMac 17 inch Mid 2006 Late 2006 Take Apart ALS Board 104 iMac 17 inch Mid 2006 Late 2006 Take Apart ALS Board 105 Clutch Mechanism Tools Removing the clutch requires using the following tools Torx T10 screwdriver magnetized Preliminary Steps Before you begin follow steps for removing the following Access door e Front bezel e Lower EMI shield e LCD display e Hard Drive e Optical drive e Speakers e Memory e Logic board e Hard drive fan Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Clutch 106 Removing the Clutch 1 Carefully peel the three pieces of EMI tape up and off the metal clutch cover J AA E aoa 2 Remove the metal clutch cover ey ee ET iMac 17 inch Mid 2006 Late 2006 CD Take Apart Clutch 107 3 Using a T10 torx screwdriver remove the four clutch mounting screws amp 922 7020 pS UOO 4 Stand up the unit and remove the four T10 clutch to stand mounting screws Separate the clutch from the rear housing and the stand 922 7012 iMac 17 inch
62. low instructions in the General Information chapter to reset the SMC Does the computer display video after successfully resetting the SMC Yes Press and hold the power button until the computer powers off Start the computer again and confirm that front LED is reliably going off If the computer still has no video but the LED is reliably going off continue with step 7 No Go to the next step 6 Unplug the iMac and remove the SDRAM Replace with known good SDRAM Plug the iMac back in and power the unit on Does the front LED go off after a few moments now Yes Replace the original SDRAM and test again If the front LED does not go off with the only the original SDRAM installed replace the SDRAM If the LED is now reliably going off after a few moments but yet you still do not have any video go to step 7 No If the LED remained on the main logic board is not communicating with the LCD panel to generate video Replace the main logic board 7 With the LED going off you may have a No Backlight condition or an LCD failure In a dim room turn the display at an angle to you and look closely at the display Is the display completely black or can you see a dim purplish light or glow to the display Completely black Replace the inverter Dim purplish light or glow Replace the LCD panel iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 131 Starts Up to Black Screen or No Video iMac 17 inch Mid 2006
63. ls and 6 9 million red green and blue subpixels Occasionally a transistor does not work perfectly which may result in the affected subpixel being turned on bright or turned off dark With the millions of subpixels on a display it is quite possible to have a low number of faulty transistors on an LCD Therefore a certain number of subpixel anomalies is considered acceptable Rejecting all but perfect LCD panels would significantly increase the retail price for products using LCD displays These factors apply to all manufacturers using LCD technology not just Apple products To determine whether or not the display has an acceptable number of pixel anomalies follow the steps below 1 Set the display image to one of the following colors all white display all red display all green display or all blue display 2 Using a jeweler s loupe pocket microscope or other magnifying device identify and count each subpixel anomaly Bright subpixel anomaly subpixel that is always on Dark subpixel anomaly subpixel that is always off 3 Important Check the number of subpixel anomalies with the following chart LCD Size Acceptable Number of Subpixel Replace the Display inches Anomalies 4 Ifthe number of subpixel anomalies exceeds the acceptable number listed in the chart replace the LCD panel 5 If the number of subpixel anomalies is acceptable explain to the customer that the pixel anomalies are within specifications
64. nd chime you can let go of the keys Does the computer display video after successfully resetting the computer s PRAM Yes Problem resolved Restart the computer from the Apple menu and make sure the computer display is no longer tinted another color No Continue to the next step Connect an external monitor to the mini VGA port Does the external display exhibit the same color tinting Yes Replace the logic board No Check the LVDS cable connection If connected and same color tinting persists replace the LVDS cable Does color tinting persist after changing the LVDS cable Yes Replace the LCD display panel No Problem solved Restart the computer from the Apple menu and make sure the computer display is no longer tinted another color iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 132 Display When displaying a single color over the screen area the LCD panel shows one or more pixels that are not properly lit Active matrix LCD technology uses rows and columns of addressable locations pixels that render text and images on screen Each pixel location has three separate subpixels red green and blue that allow the image to be rendered in full color Each subpixel has a corresponding transistor responsible for turning the subpixel on or off There are typically millions of these subpixels on an LCD display For example the LCD panel used in the Apple Cinema HD display is made up of 2 3 million pixe
65. ne If the mouse fails to power on with known good machine replace the mouse If the mouse will power on with a known good machine replace the main logic board 2 Ifthe underside LED is lit and the surface is good and the mouse still does not track try plugging the mouse into another USB port on the machine Does the mouse track now Yes Issue resolved Try the other USB ports on the system to make sure you don t have a bad port No Try using a known good mouse If a known good mouse resolves the issue replace the mouse If a known good mouse does not resolve the issue replace the main logic board My mouse works intermittently the cursor freezes randomly or is slow to respond 1 Try using the mouse on another surface Non reflective opaque surfaces without repetitive patterns work best The surface should be clean but not shiny Optical mice won t work on glass mirrored surfaces glossy materials or mouse pads with pictures Does the mouse track correctly on a proper surface Yes Issue resolved No Check the Mouse Tracking setting in the Mouse control panel 2 Boot to another volume like the System Install Disc Does the mouse track properly now Yes Reinstall System Software No Try a using a known good mouse If a known good mouse resolves the issue replace the mouse If the issue persists with a known good mouse replace the main logic board iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 15
66. nel and disconnect the two white inverter connectors shown 2 Using a flat blade screwdriver as shown pry up the inverter to remove it from inside the display panel mounting bracket iMac 17 inch Mid 2006 Late 2006 CD Take Apart Inverter 62 Replacing the Inverter 1 Insert the long black inverter cable through a hole at the back center of the right mounting bracket and press the sticky side of the replacement inverter onto the back edge of the bracket 2 Connect the inverter to display cables and tape them to the back of the display panel 3 Replace the display panel 4 Replace the lower EMI shield 5 Replace the front bezel 6 Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Inverter 63 Speakers Tools Torx T10 screwdriver magnetized Torx T6 screwdriver magnetized Preliminary Steps Before you begin follow steps for removing the following Access door e Front bezel e Lower EMI shield e LCD Display Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Speaker 64 Removing the Speakers 1 Using a T10 torx screwdriver remove the screws from the left and right speakers Replacement Note The longer of the two speaker mounting screws is used to secure the left speaker the shorter screw secures the right speaker 922 7067 ema 922 7068 2 Lift the speakers straight up and disconnect the speaker cable under th
67. nnect the optical cable 593 0324 to the optical sensor on one end and to the logic board on the other end 922 6842 I Replace the display panel 6 Replace the lower EMI shield N Replace the front bezel go Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive 72 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Optical Drive 73 Hard Drive Tools Torx T10 screwdriver magnetized T8 e Flat blade screwdriver Preliminary Steps Before you remove e Access door e Front bezel e Lower EMI shield e LCD display Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Hard Drive 74 Remove the Hard Drive 1 Position yourself at the base of the computer closest to the stand 2 Pullin on the edge of the mounting bracket until you feel it release from the chassis Pull HARD The hard drive bracket will release on the end near your hands 3 Disconnect the hard drive power and data cables Set the hard drive aside iMac 17 inch Mid 2006 Late 2006 CD Take Apart Hard Drive 75 4 Note If you are replacing a bad hard drive remove the mounting bracket and the mounting pins shown in the following steps before returning the bad drive to Apple 5 Using aT10 torx screwdriver remove two screws and the mounting bracket from the drive 922 7019 6 Using a T8 torx screwdriver remove two mounting pins from the o
68. o replace the Apple Remote battery for instructions KBase article 302543 2 Does the IR remote now communicate with an active application that works with Apple Remote Yes IR remote is functioning correctly No Replace Apple Remote iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 145 IR Sensor Receiver Supported applications do not respond to input from the remote control 1 Perform the checks above under IR Remote to verify that the Apple Remote is functioning correctly and retest Do supported applications now respond to input from the IR remote Yes Problem resolved No Go to the next step Verify that the IR Sensor can be seen in the Apple System Profiler Open the Apple System Profiler and click on the USB section You should see the following listed IR Receiver Version 0 58 Bus Power mA LOO Speed Up to 12 Mb sec Manufacturer Apple Computer Inc Product ID Ox8240 Vendor ID OxO5ac Apple Computer Inc Do you see the IR Receiver listed under the USB section of the Apple System Profiler Yes Go on to the next step No Replace the IR cable and retest Refer to the IR Board take apart procedure Do supported applications now respond to input from the IR remote Yes Problem resolved No Replace the IR sensor board and retest Refer to the IR Board take apart procedure If the issue persists after replacing these parts replace the logic board
69. orrect version of the Diagnostic and that the disc is able to boot another machine that it supports If so then try booting from an external optical drive If this is successful you should replace the optical drive and retest the machine booting to the diagnostic disc Did the tests pass Yes Reinstall the System Software that came with the computer and test No Replace the component s indicated by the test results Hard Drive Issues Note The following information is for Intel based and PPC Macintosh drive compatibility Drives to be used in booting Intel based Macintosh hardware should be formatted and partitioned with an Intel based Macintosh disk utility running on Intel based Macintosh hardware That should ensure you get the correct default partition map and structure for reliable booting Intel based Macintosh CPUs in Target Disc Mode will only mount on PPC machines running Mac OS X 104 or later and may show one contiguous partition rather than separate partitions on the host machine Always make sure to use the OS that came with the machine if you need to reinstall software ask the customer for the discs if necessary and the diagnostics specifically designated for that hardware iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 134 System hangs during normal startup process 1 Boot from the system CD that came with the computer Use Disk Utility to verify the hard drive 2 Using Disk Utility
70. ptical drive removal procedure has been updated Using a screwdriver to release the optical drive tabs is causing damage to the logic board The updated procedure shows how to remove the optical drive using a needlenose pliers Additional information on handling slot load optical drives can be referenced in Kbase article 305282 12 January 2007 The No Power symptom in Troubleshooting has been updated If your computer won t turn on try removing and reinstalling the SO DIMMs 31 October 2006 Troubleshooting has been updated with a new symptom Fans running at full speed after computer turns on Note The customer may have entered a diagnostic mode that causes the fans to run at full speed This symptom is very easy to resolve at the customer level 3 October 2006 The symptom Starts Up To Black Screen or No Video iMac 17 inch Mid 2006 only has been added to the troubleshooting chapter Upgrading to Mac OS X v10 4 8 resolves the issue 2 October 2006 EMI tape photos 922 4786 and 922 5026 used to repair torn and damaged EMI shielding have been added to the EMI Shielding section in the General Information chapter 6 September 2006 Introduction iMac 17 inch Late 2006 CD 1 83 GHz Intel Core 2 Duo processor 160 GB Serial ATA hard drive Slot loading Combo drive DVD ROM CD RW e 512MB of 667MHz DDR SDRAM supports up to 2GB Intel GMA 950 graphics processor with 64MB of DDR2 SDRAM shared with main memory New
71. r housing Make sure the inverter cable and the LVDS cable are accessible and not tucked under the panel 9 Secure the panel with four T10 mounting screws 922 7023 10 Connect the inverter cable connector to the logic board ee 11 Connect the LVDS cable connector to the logic board and secure it with two T6 screws 922 7010 12 Fold the EMI tape firmly over the left top and right edges of the display panel Use the black stick to adhere the tape firmly and rub out wrinkles 13 Replace the lower EMI shield 14 Replace the front bezel 15 Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Display Panel 55 LVDS Display Cable Tools No tools are required to remove the LVDS Low Voltage Differential Signaling cable Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield e LCD Display Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart LVDS Cable 56 Remove the LVDS Cable 1 Locate the LVDS cable on the back side of the display panel Remove the piece of tape circled that secure the cable to the panel To access the connector peel back the black mylar tape that partially covers the LVDS connector 2 Remove the tape securing the LVDS connector to the panel connector iMac 17 inch Mid 2006 Late 2006 CD Take Apart LVDS Cable 57 3 Pinch together the connector locking l
72. r power supply screws starting with the machine screw in the lower right corner of the power supply Then install the other screws see photo above for locations Replace the hard drive Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the access door Power Supply 661 3780 1 WARNING HIGH VOLTAGE Position the power supply loosely in its mounting location Connect the power supply to AC power inlet cable Tuck the cable beneath the chassis and away from the hard drive bay iMac 17 inch Mid 2006 Late 2006 CD Take Apart Power Supply 86 Logic Board Tools Removing the optical drive requires using the following tools Torx T10 screwdriver magnetized Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield e LCD display e Hard Drive e Optical drive Speakers e Memory Part Location iMac 17 inch Mid 2006 Late 2006 CD Take Apart Logic Board 87 Removing the Logic Board 1 Disconnect the ten cables from the connectors on the logic board Note The speakers would already be removed 2 Using a T10 torx screwdriver remove the screws from the logic board Note the locations of the three self tapping screws marked by and S in the photo The rest of the screws are machine screws 922 6800 o gt 922 6842 iMac 17 inch Mid 2006 Late 2006 CD Tak
73. s The only tool required for this procedure is a black stick or other nonconductive nylon or plastic flat blade tool Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel Part Location iMac 17 inch Mid 2006 Late 2006 Take Apart Lower EMI Shield 37 Removing the Lower EMI Shield 1 Carefully peel the lower EMI shield off the bottom edge and side of the rear housing Use a black stick to help peel back the shield If replacing a torn or damaged lower EMI shield peel the lower EMI shield off the bottom edge of the display Replacing the Lower EMI Shield 1 Position the lower EMI shield over the bottom of the unit so that the holes in the shield are properly aligned Press the sticky top edge of the EMI shield onto the bottom side of the display panel The crease in the EMI shield should align with the edge of the panel Fold down the EMI shield and press it firmly over the bottom edge of the rear housing Use a black stick to rub out wrinkles and ensure that the EMI shield adheres firmly along all edges Replace the front bezel Replace the access door iMac 17 inch Mid 2006 Late 2006 Take Apart Lower EMI Shield 38 IR Board Tools Torx T8 screwdriver magnetized Preliminary Steps Before you begin follow steps for removing the following e Access door e Front bezel e Lower EMI shield Part Location
74. ter P on the keyboard Keep these four keys pressed while the computer starts up Make sure you hold down the four keys P R Apple Option while the computer is starting up When you hear the computer s start up chime for the second time you can let go of the keys on the keyboard Ifyou didn t hear at least two startup chimes go to the top of this section and begin again It s important that you hear two startup chimes when performing this procedure This indicates that you have successfully reset the computer s PRAM Parameter RAM iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 130 3 Does the computer display video after successfully resetting the computer s PRAM Yes Restart the computer from the Apple menu and make sure the computer is now working correctly No Continue to next step 4 Make sure the machine is powered off power off the machine by holding in the Power Button on the rear of the machine Turn on the machine Observe the white LED on the front bezel during startup it should go out after a few moments Did the LED go off Yes If the LED went off this indicates that the main logic board has communicated with the LCD display for video signal and your main logic board should be good You can confirm by connecting an external monitor and checking to see that you have video out Go to Step 7 No Continue with the next step to reset system power management SMC 5 Fol
75. the fans to run at full speed Restarting the system will not restore normal fan operation To solve the problem the user or technician should do the following 1 Shut down the system 2 Disconnect the power cord and wait 15 seconds 3 Reconnect the power cord and wait 5 seconds 4 Power on the system Note Customers reporting this symptom should be told to press the power button AFTER the power cord has been fully inserted Inserting the power cord while pressing the power button will cause the fans to run at full speed Loud fan noise coming from inside the computer The iMac has a trio of fans that circulate air throughout the system It also includes temperature sensors and advanced thermal software that spins the fans fast or slow as needed As the system usage increases the fans will adjust their speed using advanced thermal software to meet the cooling needs of the system Under normal conditions rotating fans will make a slight hum that varies in relationship with their rotational speed and the amount of air that they are moving In addition the normal functioning of the hard drive and optical drive will generate additional whirring and scratching sounds that may be audible All of these sounds are normal and do not indicate a failure with your computer To begin troubleshooting a possible fan issue we need to qualify the sound that you re experiencing 1 Does the sound occur only under specific light heavy usage cond
76. ther side of the drive 922 7001 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Hard Drive 76 922 7019 922 7001 Replacing the Hard Drive 2 If necessary install two mounting pins on side of the hard drive mounting bracket If necessary install the mounting bracket to the top of the hard drive with two screws Connect the hard drive power and data cables Insert the hard drive mounting pins and position the drive on the chassis Make sure the hard drive power and data cables are routed correctly and don t get pinched as you lower the drive into the chassis Press down on the mounting bracket to lock it in place on the chassis Replace the display panel Replace the lower EMI shield Replace the front bezel Replace the access door iMac 17 inch Mid 2006 Late 2006 CD Take Apart Hard Drive 77 iMac 17 inch Mid 2006 Late 2006 CD Take Apart Hard Drive 78 Power Supply The iMac 17 inch Mid 2006 Late 2006 CD computer was built with two versions of the power supply Version 1 iMac Mid 2006 power supply Version 2 iMac Early 2006 power supply This procedure provides instructions for replacing both versions Note The power supplies must be replaced like for like Tools Removing the power supply requires using the following tools Torx T8 screwdriver magnetized Torx T10 screwdriver magnetized Black stick Preliminary Steps Before you begin follow steps for
77. tom of the enclosure see photo below accidentally tear use EMI tape 922 4786 or 922 5026 to repair and completely seal the unit When properly repaired all edges shown below will be wrapped by EMI tape and the tape securely adhered to all edges Use a black stick to flatten the EMI tape tightly and rub out air pockets and wrinkles iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 13 Pay particular attention to the EMI shielding inside the rear housing shown below The EMI shield is easily damaged when replacing modules Lower EMI Shield EMI tape covers the top and sides of the display panel and the lower EMI shield covers the logic board along the bottom of the unit The EMI tape and lower EMI shield are easily damaged when removed and removal is necessary in order to access most components within the unit Should the EMI tape that seals the display or the EMI shield covering the bottom of the enclosure see photo below accidentally tear use EMI tape to repair and completely seal the unit iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 14 When properly repaired all edges shown below will be wrapped by EMI tape and the tape securely adhered to all edges Use a black stick to flatten the EMI tape tightly and rub out air pockets and wrinkles iMac 17 inch Mid 2006 Late 2006 CD Take Apart General Information 15 What s New 23 April 2007 The o
78. ttached to the top of the bezel iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 29 11 Swing the bezel up so you can disconnect the two camera board cables Remove the any kapton tape and disconnect the camera and microphone cables from the camera board 12 If replacing a damaged front bezel remove the camera board iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 30 Replacing the Front Bezel 1 Position the front bezel near the top edge of the unit and connect the two camera board connectors 2 Make sure the black EMI shielding along the top of the LCD panel is not in the way of the locking mechanisms when you lower the front bezel onto the computer Use a black stick to press re stick the EMI shielding along the top of the panel 3 Tuck the cables neatly into the channel on the rear housing iMac 17 inch Mid 2006 Late 2006 CD Take Apart Front Bezel 31 4 Make sure the memory ejector levers are in the closed position as shown before lowering the front bezel over the ejectors Note Shown in the order they were removed 5 Continue to lower the font bezel down and press the top corners of the front bezel to connect the latches Note Check that the latches are connected by lifting the front bezel at each corner 6 Replace the four bezel screws along the bottom of the computer 7 Replace the access door and tighten the two captive screws 922 7
79. uter when to turn on turn off sleep wake idle and so forth Handling system resets from various commands Controlling the fans Note that resetting the SMC does not reset the PRAM Resetting the SMC will not resolve issues in which your computer is unresponsive in these situations restarting your computer will generally suffice If your computer isn t responding perform these steps one at a time in this order until the issue has been resolved 1 Force Quit Option Command Escape 2 Restart Control Command Power 3 Force Shut Down press the power button for 10 seconds Resetting the SMC can resolve some computer issues such as not starting up not displaying video sleep issues fan noise issues and so forth If your computer still exhibits these types of issues after you ve restarted the computer try resetting the SMC To reset the SMC on an iMac 1 From the Apple menu choose Shut Down or if the computer is not responding hold the power button until it turns off 2 Unplug all cables from the computer including the power cord 3 Wait at least 15 seconds 4 Plug the power cord back in making sure the power button is not being pressed at the time 5 Reconnect your keyboard and mouse to the computer 6 Press the power button on the back to start up your computer iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting General Info 124 Diagnostic LEDs The iMac has three built in diagnost
80. w plug your device directly into the back of your iMac Does it work as expected now Yes Your device works when plugged directly into the computer This indicates a conflict with one of the other USB devices You can test by gradually adding your devices back and seeing where the issue occurs then contacting the manufacturer of the device s for assistance No Unplug your device from the iMac and plug the keyboard into the port your device just occupied Is your keyboard still working Yes Your Apple Keyboard works when plugged into the USB port your device was plugged into This points to an issue with your device Please review the documentation that came with your device Install any necessary drivers and contact the manufacturer of your device for assistance No Replace the logic board I see a message saying not enough power to function It appears that this device needs to be plugged into the computer s USB port rather than the keyboard USB port Any USB device connected to the keyboard needs to be either a self powered device a USB device with its own AC power supply or a low power device a device that does not need a large amount of voltage to operate Your device may draw more power than the keyboard can provide iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 153 iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 154 Service Source Views iMac 17 inch Mid 200
81. working properly This may be an issue with the microphone speakers or headphones that were plugged into your iMac Please work with the manufacturer to troubleshoot this issue No Go to step 2 No Check your speaker balance If your balance setting was set to the left or right speaker you would only hear sound from one speaker Go to step 2 Open System Preferences System Preferences can be found under the Apple menu Click once on the sound icon Click once on the Output tab Make sure your balance setting is in the middle After adjusting the audio balance do you have audio from both speakers now Yes It looks like the issue was the balance was not set properly No Replace the speakers iMac 17 inch Mid 2006 Late 2006 CD Troubleshooting Symptom Charts 149 6 Ifthe speakers did not solve the problem replace the logic board Mouse My mouse doesn t work at all 1 Turn over the mouse and check the if the red LED on the underside of the mouse Is the LED lit Yes The mouse has power Try using the mouse on another surface Non reflective opaque surfaces without repetitive patterns work best The surface should be clean but not shiny Optical mice won t work on glass mirrored surfaces glossy materials or mouse pads with pictures No There is no power to the mouse Try plugging the mouse into one of the USB ports on the machine If the mouse won t power on from any USB port try it on a known good machi
82. y supported AV applications the customer is experiencing problems with to make sure that the microphone feature is enabled and that the internal iSight microphone has been selected as the input device No Inspect the microphone camera cable attached to the camera board inside the front bezel If the cable is damaged replace the cable and retest If the issue continues replace the front bezel The front bezel contains the microphone Audio Quality Poor The camera is recognized but the built in microphone s audio quality is poor 1 Open the System Preferences window and click on Sound Verify that the built in camera has been selected as the sound input port Verify that the input volume settings are appropriate Use the volume level meter to verify settings Open iMovie and create a new project Click on the Audio button and record a sound sample Is the sound quality acceptable Yes The microphone is functioning normally The audio quality problems may be caused by bandwidth limitations when using iChat over the internet Instruct the customer to use the iChat AV connection doctor feature to verify that there is sufficient bandwidth to have an audio iChat session without a significant degradation of audio quality iChat AV allows the user to limit the allocated bandwidth which could impact audio quality Check the settings and increase the bandwidth if needed No The microphone may be faulty Replace the front bezel whi

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