To access these LEDs remove the back cover of the computer

Turn your computer off choose Shut Down from the Apple menu . If you can't shut it down that way, you can turn the computer off by pressing the power button for five seconds. 2. After the computer is off, disconnect all cables and the power cord from your computer. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of the computer and slowly lay it down so the screen is flat against the surface and the bottom is toward you. 4. Raise the foot and use a Phillips 1...

The computer wont burn discs

The first thing we should check is whether your drive can read discs normally. Try inserting an audio CD and check whether it shows up on your desktop or launches iTunes. Then eject it and insert the iMac Software Install and Restore disc that came with your computer. Are either of these discs recognized by the computer Yes This is a good sign. So do you get a specific error message or error code when you try to burn a disc Go on to step 2. No So no disc will show up on your desktop. Go...

Repair Procedure

Verify that the system is eligible for the REP program. Refer to the topic Eligible Products mentioned earlier in this section. 2. If the computer is eligible, remove the rear cover on the iMac G5 so that the main logic board is visible. 3. Inspect the capacitors highlighted below on the logic board, looking for signs of bulging and or venting. 4. Affected capacitors will have a sign stamped into the top of the capacitor. Note Not all capacitors stamped with a sign are faulty, so further...

Replacing the Inverter

Connect The Inverter Imac 2005

Remove the replacement inverter from its packaging.Note The inverter board and the inverter cover have been revised July 2005 . The inverter cables are now soldered to the top side of the board and the cover now has a slot for the cables to reside. 2. Attach the black inverter cable that you removed previously in step 16. 3. Install the gray cover on the replacement inverter board. Gently squeeze the board at each tab circled until all six tabs snap onto the board. 4. Turn over the inverter...

Removing the Bluetooth Board

Remove the two identical T6 screws. 3. Holding the top and bottom edge of the board, lift the Bluetooth board straight up to disconnect it from the logic board. 4. Turn over the board, and grasp the metal end of the connector. To disconnect the Bluetooth cable, pull the connector straight off the board.

Replacing the Bluetooth Board

Connect the Bluetooth antenna cable. 2. Holding the top and bottom edges of the board, align the screw holes over the standoffs on the logic board. Then press down on the area of the board that is over the connector. Caution Do not press on any other areas of the Bluetooth board. 4. Replace the AirPort Extreme Card.

Replacing the Modem Board

Route the cable with ferrite bead between the modem and the port bank. 3. Holding the top and bottom edges of the board, align the screw holes over the standoffs on the logic board. Then press down on the area of the board that is over the connector. Caution Do not press on any other areas of the modem board. 5. Replace the AirPort Extreme Card holder. 6. Replace the AirPort Extreme Card.

Replacing the Air Port Extreme Antenna Cable

Airport Attena For The

Route the antenna through the corner opening in the chassis, and replace the screw first. 2. Route the antenna cable through the mesh pad, cable guides, and tape. 2. Route the antenna cable through the mesh pad, cable guides, and tape. 3. Replace the midplane chassis inside the display bezel.

Power Issues No Power

Imac Logic Board

The display has no picture or color and no sounds can be heard coming from the fan or hard drive. 1. Refer to the iMac G5 Repair Extension Program at the beginning of the troubleshooting chapter. 2. Verify power outlet is good. Plug a different device into the socket to ensure there is power, or plug the iMac G5 into another outlet. 3. Check the power cord. Use a known good power cord. 4. Check the connection of the power cord on both ends. Verify that the plug is...

Removing the Bluetooth Antenna Cable

Imac Bluetooth Antenne

Holding the midplane vertical, route the Bluetooth antenna cable through the small opening in the chassis. 2. On the other side of the midplane, note the placement of the other end of the Bluetooth antenna cable in its plastic holder. 3. Use a needlenose pliers to pry the Bluetooth board from the holder on the chassis. 4. Release the Bluetooth antenna cable from the chassis guides. If necessary, use a flat-blade screwdriver to carefully pry open the guides. 5. Near the Bluetooth holder, note...

Computer beeps at startup

Check that the memory DIMMs are iMac G5 compliant. iMac G5 computers work with memory modules DIMMs that meet all of these criteria PC3200, 2.5V, unbuffered, 8-byte, nonparity, 184-pin, 400Mhz DDR SDRAM. There are two RAM slots. The maximum amount of RAM you can install is 2 GB. You can use RAM module sizes of 256 MB, 512 MB and 1 GB, in either slot. DIMMs with any of the following features are not supported in the iMac G5 computer registers or buffers, PLLs, ECC, parity, or EDO RAM. 2....

Replacing the LCD Panel

Check the routing of the LCD panel cables. Note The replacement LCD panel includes the brackets, cables, tape, and gaskets, as shown. 2. To avoid leaving fingerprints on the display screen, make sure your fingertips touch only the metal frame of the display. 3. Make sure the cables cannot be pinched when setting the LCD panel in the bezel. 4. Place the LCD panel into the bezel so that all six screw holes on the brackets align with the screw holes on the bezel. 6. Turn over the display bezel...

Removing the Microphone Cable

From the top of the logic board at the bottom of the port bank, use a needlenose pliers to disconnect the two narrowest cable connectors fan and microphone. 2. Locate the longer fan connector. 2. Locate the longer fan connector. 3. Place the midplane upright. Holding the other cables aside, route the fan cable and connector through the opening in the midplane chassis. 4. Route the microphone cable connector through the midplane chassis opening. Important The microphone connector has two...

Replacing the Midplane Chassis

Make sure the midplane chassis is clean. 4. Replace the AirPort Extreme antenna cable. 5. Replacement Note Before installing the logic board, refer to the Logic Board procedure to clean the heatpad and apply new thermal grease. 9. Replace the hard drive duct. 10. Replace the Bluetooth antenna cable. 11. Replace the midplane assembly in the back cover.

When I type strange characters appear on the screen

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. To switch to the US keyboard, 3. Click on the International icon. 4. Click on the Input Menu near the top of the screen. 5. Scroll down the list and uncheck any non-US keyboard layouts. 6. Close the System Preferences. Try typing a few characters. Did is solve the problem Yes Problem solved.

Removing the Air Port Extreme Antenna Cable

Note the routing of the AirPort antenna cable through the cable guides, tape, and mesh sponge pads on the left side of the midplane chassis. 1. Note the routing of the AirPort antenna cable through the cable guides, tape, and mesh sponge pads on the left side of the midplane chassis. 2. Starting at the plug end of the AirPort antenna, release the cable from the cable guides and tape. 3. Release the cable from the remaining cable guide and from where it is sandwiched between the mesh sponge...

The computer will turn on but the display has no picture or color The boot chime can be heard and the fan andor hard

Reset Knop Computer Foto

Refer to the iMac G5 Repair Extension Program at the beginning of the troubleshooting chapter. 2. Check if the computer is sleeping. Press the space bar to wake the computer from sleep mode. 3. Did the computer wake from sleep Yes Put the computer to sleep from the Apple menu and wake the computer again to test the settings. Check Energy Saver setting to see when the computer has been designated to sleep. 4. Reset your computer's PRAM Parameter RAM . If your iMac is on, turn it off by...

The USB port on my keyboard doesnt work

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...

Removing the LCD Panel

Place the display bezel LCD panel assembly face-down on a clean, soft, lint-free folded towel or blanket. 2. Remove the six screws at the LCD panel brackets. 3. Touching only the top edge of the LCD panel, tilt up the panel. 3. Touching only the top edge of the LCD panel, tilt up the panel. 4. Holding the top and bottom edges of the panel, lift it out of the bezel 4. Holding the top and bottom edges of the panel, lift it out of the bezel

Apple G5 4 Pin Fire Wire

Audio Line Imac

IMac G5 computers work with memory modules DIMMs that meet all of these criteria PC3200, 2.5V, unbuffered, 8-byte, nonparity, 184-pin, 400Mhz DDR SDRAM. There are two RAM slots. The maximum amount of RAM you can install is 2 GB. You can use RAM module sizes of 256 MB, 512 MB and 1 GB, in either slot. DIMMs with any of the following features are not supported in the iMac G5 computer registers or buffers, PLLs, ECC, parity, or EDO RAM.

Replacing the Microphone Cable

Secure the microphone cable to the speaker, and apply new tape. Note A strip of new tape comes with both a replacement microphone cable and a replacement speaker set. 2. Route the cable connectors through the chassis opening as follows microphone cable connector first narrowest fan cable connector last 3. Connect the connectors to the logic board.

Removing the Speaker

Speakers Imac

Locate the two speakers on the midplane chassis. 2. From the top of the logic board at the bottom of the port bank, use a needlenose pliers to disconnect the three cable connectors fan, microphone, and speaker. 3. Holding the midplane vertically, locate the narrowest fan connector. 4. Holding the other cables aside, route the fan cable and connector through the opening in the midplane chassis. 5. Route the narrower microphone cable connector through the opening in the midplane chassis. Note...

Hear sound out of only one speaker

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 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 Check your speaker balance. If your balance...

Removing the Lower

Imac Lcd Connector

From the top of the logic board at the bottom of the port bank, use a needlenose pliers to disconnect the fan cable connector. 2. Place the midplane upright, and while holding the other cables aside, route the fan cable and connector through the opening in the midplane chassis. 3. Without straining any of the cables, use a flat-blade screwdriver to carefully pry open the cable guides on the underside of the midplane chassis. Release the fan cable from the cable guides. Caution Use the...

Eligible Products

The program is available for first generation iMac G5 models that were sold between approximately September 2004 and June 2005 featuring 17- and 20-inch displays with 1.6GHz and 1.8GHz G5 processors. 1. The affected iMac G5 computers have serial numbers where the first five 5 digits fall into the ranges noted below Note The iMac G5 REP for Video and Power Issues is based upon the system's serial number and the symptoms diagnosed, not upon the serial numbers of the logic boards or power...

Removing the Midplane Assembly

Mac Mini Airport Extreme Card

To access the midplane assembly you must first remove other service modules. This procedure will show you how to remove and replace these modules. Note As you remove each module, set it aside, along with the screws for that module. 2. Ground yourself. Touch the metal surface as shown below on the inside of the computer to discharge any static electricity. Warning Always discharge static electricity before you touch any parts or install any components inside the computer. To avoid generating...

My mouse works intermittently the cursor freezes randomly

Unplug any USB devices plugged into your computer, other than the Apple Mouse and Apple Keyboard. 2. Reconnect the USB devices one by one and test your mouse after each to figure out which device is causing the issue. Once you have isolated the problem child that isn't playing well with others, you will want to contact the manufacturer of that device to see if they have any suggestions or assistance.

SMU Button

Imac Smu Reset

The iMac G5 uses an advanced system management unit SMU to manage the thermal and wattage conditions, while keeping the acoustic noise to a minimum. The SMU controls the fans and regulates the speeds to run each fan. The SMU reset button shown below is similar to the PMU button on previous iMac computers. The SMU reset button shown below is similar to the PMU button on previous iMac computers. The SMU supports the following functions provides initial configuration of system clocks automatically...

Replacing the Bluetooth Antenna Cable

On the back of the midplane chassis, route the Bluetooth antenna cable under the fan and speaker cables. 2. If you are replacing the Bluetooth antenna cable with a new one, rub away any remaining adhesive on the midplane chassis. Peel off the backing on the Bluetooth holder, and press the holder onto the chassis. 3. Secure the cables in the cable guides on the underside of the chassis. 3. Secure the cables in the cable guides on the underside of the chassis. Replacement Note If necessary,...

Service Source

Soft Modem Card 922 6492

Light Pipe w Gasket 922-6797 Air Deflector 922-6822 Antenna, AirPort 922-6793 Antenna, B lueTooth 076-1179 Soft Modem 922-6492 BlueTooth Card 922-6871 Back Cover, 20 076-111, non PFC 076-1112,PFC Back Cover, 20 076-111, non PFC 076-1112,PFC Cover, Inverter, Lamp Wires 922-6820 Optical Drive, Super Drive, 8x 661-3343 Memory - SDRAMM, DDR 400 661-3286 256 MB 661-3287 512 MB 661-3288 1 GB Note Not Part of Chassis 661-3259 160 GB 661-3262 250 GB location shown where to install part 922-7671

Removing the Logic Board

Replace Fan For Imac

Remove the air deflector located above the I O ports. There are no screws, it s held in place with double-stick tape. 2. Disconnect the four connectors two fan cables and two hard drive cables and remove the two screws on the video cable. 3. Using a T-8 screwdriver, remove the two fan duct screws and lift the duct off the logic board. Note These two screws are longer than the other silver screws securing the logic board to the midplane chassis. 4. Remove the three hard drive screws. Next,...

Repair Strategy

Required service parts for this program are available so that certified technicians may create a repair at an Apple service provider location. Asia-Pacific, Canada, Europe except IMCs , Japan, United States Warranty Repairs If an iMac product eligible for this program is currently covered by an Apple warranty or extended service agreement, create the repair in the usual manner. However, it is extremely important that you select the CompTIA Code created for this program see Special CompTIA Code...