Removing the Power Supply
1. Using a T10 torx screwdriver, remove the three self-tapping screws from both top corners and the lower left corner of the DC-DC board. Then remove the machine screw from the lower right corner of the board. Replacement Note When installing the mounting screws in the power supply, install the machine screw first in the lower right corner of the power supply. Then install the three self-tapping screws. 2. Disconnect the power supply cable in the top left corner of the photo . 3. Pull out the...
Replacing the AirPort Extreme Antenna
1. Locate the antenna mounting channel inside the left corner of the rear housing, and position the antenna in the channel. Compress the sticky side of the antenna to the housing until securely fastened. 2. Route the antenna cable through the EMI shield and on top of the EMI. 3. Secure the extra length of antenna cable to the housing with two pieces of tape. 7. Replace the DC power supply. 10. Replace the AirPort Extreme board. 11. Replace the Bluetooth board. 13. Replace the lower EMI shield....
Take Apart
General Information 6 What's New 6 Product View 7 Identifying the iMac Early 2006 17-inch Computer 7 Opening the Computer 12 Access Tool Modification 12 EMI Shielding 15
No Video Boot Chime heard White LED ON Symptom
The iMac Early 2006 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. 2....
Identifying the iMac Early inch Computer
In January 2006, a second generation iMac including a built-in iSight camera was introduced using an Intel processor. You can identify the iMac with the Intel processor in several ways. 1. Check the Configuration on the bottom label. On the bottom of your iMac stand, you'll find a label with the configuration information printed on it The PowerPC G5 iMac computers will list iMac G5 in the configuration. iMac computers using Intel processors will not list G5 in their configuration. 2. Check the...
No Video No Boot Chime White LED ON Symptom
The iMac Early 2006 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. Reset the SMC Formerly SMU . - Turn off the computer by choosing Shut Down from the Apple menu, or by holding the power button until the computer turns off. - Unplug all cables from the computer, including the power cord. - Plug in the power cord while simultaneously pressing and holding the...
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 computer when to turn on, turn off, sleep, wake, idle, and so forth. Handling system resets from various commands. Note that resetting the SMC does not reset the PRAM. Resetting the SMC will not resolve issues in which your computer is...
Replacing the LCD Display
1. Replace the LVDS cable on the rear of the display panel. 2. Connect the two inverter-to-display cable connectors and tape them to the back of the display panel. 3. Replace the right panel mounting bracket on the display panel with two screws. 4. Replace the left bracket on the display panel with two screws. Push aside any cables that could interfere with the display mounting brackets when lowered into position. 5. Make sure the inverter cable extends beyond the bottom of the display panel,...
Remove the LVDS Cable
Locate the LVDS cable on the back side of the display panel, and remove the pieces of tape that secure the cable to the panel. Also, carefully remove the tape securing the LVDS connector to the panel connector. 2. Pinch together the connector locking levers, and disconnect the LVDS cable connector. 2. Pinch together the connector locking levers, and disconnect the LVDS cable connector.
Replacing the AC Line Filter
1. Install the AC power inlet on the rear housing screw mounts with three self tapping screws. 2. Install the power inlet ground cable to the chassis with a machine screw. 3. Route the power inlet cable beneath the chassis as shown in the photo above, and connect it to the power supply. 4. Using EMI tape, securely tape the top and bottom edges of the AC power inlet to the rear housing. 9. Replace the AirPort Extreme card. 10. Replace the Bluetooth card. 12. Replace the lower EMI shield. 15....
Removing the Memory
1. After removing the access door, touch the metal frame around the memory compartment to discharge any static electricity from your body. 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. 2. Pull the two levers in the memory compartment toward you. If a memory module is installed in the slot, pulling the levers will dislodge it. Note The levers...
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. The iMac Early 2006 will not turn on. The...
Opening the Computer
Apple authorized, desktop certified technicians only should ever remove the front bezel on the iMac Early 2006 . 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...
Safety
Warning When the iMac Early 2006 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. 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...
Removing the AC Line Filter
1. Using a torx T10 screwdriver, remove the three self-tapping screws from the power inlet. 2. Using a tox T10 screwdriver, remove the machine screw from the power inlet ground cable. 3. Peel the EMI tape off the AC filter. 4. .Disconnect the power inlet-to-power supply cables and unlace the power inlet cable from beneath the chassis.
Removing the Clutch
1. Carefully peel the EMI tape located in the middle of this photo up and off the metal EMI cover. Next, remove the EMI metal cover. 2. Using a T10 torx screwdriver, remove the four clutch mounting screws. Stand up the unit and remove the four clutch-to-stand mounting screws. Using a T10 torx screwdriver, remove the four clutch-to-stand screws. Remove the clutch and cover from the stand.
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 chances of making 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. 2. Cut the EMI gasket to the edge of the access card. 4. Bend the card at a...
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 as shown, with the springs 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. 6. Replace the optical drive fan. 12. Replace the lower EMI shield. 14. Replace the memory access door.