Special CompTIA Codes

Apple has created the following two CompTIA Codes to use for repairs on iMac products eligible for coverage under the iMac G5 REP for Video and Power Issues Use CompTIA Code 560 iMac G5 MLB Power Supply REP when replacing a logic board, whether or not the iMac is covered by warranty or an extended service agreement Use CompTIA Code 660 iMac G5 MLB Power Supply REP when replacing a power supply, whether or not the iMac is covered by warranty or an extended service agreement If it's necessary to...

To power the computer on with the back cover off

Press the power button. The LEDs will come on indicating the computer status. 3. Press the power button. The LEDs will come on indicating the computer status. 4. To shut the computer off with the back cover off, press the power button for at least five seconds. The green LEDs will go out.

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 ahead...

Removing the Memory

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 static electricity, do not walk around the room until you have finished installing the part and closed the computer. 2. Locate the memory module(s) in the bottom right corner. 2. Locate the memory module(s) in the bottom right...

Removing the Midplane No Optical

Why Power Midplane Board

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...

Replacing the Lower

Before installing the replacement fan, make sure the fan housing includes rectangular gasket surrounding the fan opening mesh tape joining the gasket and the fan housing a spacer sponge centered over the mesh tape 2. With the midplane assembly positioned over the edge of the table and the fan clip raised, align the side pegs on the fan with the channels on the clip. Slide in the fan and press down on the clip so it locks onto the raised pegs on the side of the fan housing.

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. Using your fingers, disconnect the cable from the Bluetooth board. Note This graphic shows the Bluetooth board on the iMac G5 20-inch, however the board is in the same location on the iMac G5 17-inch computer.

Replacing the Air Port Extreme Antenna Cable

Route the antenna through the corner opening in the chassis, and replace the screw first. 2. Route the antenna cable through the mesh pads, cable guides, and tape. 2. Route the antenna cable through the mesh pads, cable guides, and tape. 3. Replace the midplane chassis inside 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. 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 pegs. To enable routing, position the...

Removing the Fans

Fan Grommets

Depending on the type of screws present Torx 8 or Phillips 2 , loosen the two fan screws. Note You don't have to remove the screws from the rubber grommets to remove the fan, just loosen the screws. 2. Disconnect the fan cable from the connector on the logic board. Pull on the black connector, not on the cable. Route the fan cable under the black cable as shown . 3. Lift the fan out of the computer. 4. If your are replacing the fan, remove the screws from the fan grommets. Using a...

No Power The iMac G will not turn on

Imac Mid 2007 Diagnostic Led

Refer to the iMac G5 Repair Extension Program for video and power issues mentioned at the beginning of this 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 securely plugged into both the AC outlet and back of the computer. 5. Remove keyboard, mouse, and other...

Error Beeps 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 Battery

Where Antenna Imac 2007 Diagram

Remove the replacement battery from its packaging. 2. Holding the battery positive side up, push the battery in the direction of the arrow under the battery clip. The battery should slip into place under the clip. under the battery clip. The battery should slip into place under the clip. 3. Replace the AirPort Extreme card. Remove the AirPort antenna cable by pulling the tab from the opening on the AirPort Extreme guide rail. 4. Slide the AirPort Extreme card into the slot until it clicks...

Heatsink Cleaning Procedure

Blow Dust Out

Dust drawn in through the intake grill on the bottom of the iMac can gradually accumulate, eventually degrading the cooling performance of the heatsink by obstructing the air flow. 1. Before you begin, remove the back cover and the midplane assembly. 2. Remove the lower fan from it's mounting bracket to expose the heatsink cooling fins. Note The lower fan does not need to be disconnected from the logic board. 3. With the lower fan removed, carefully inspect the heatsink intake for visible dust...

Not able to connect wirelessly with Air Port

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 Hardware for a line called AirPort Card. Select that line. 4. Does the section to the right say No Information Found Yes It looks like your computer doesn't realize it has an AirPort card installed. Go on to step. 5 No It looks like your iMac recognizes that it has an AirPort Card installed. Go on to step 6. 5. Remove the back cover and...

Removing the Lower

Position the midplane assembly at the edge of a table so the fan cable dangles and is not pinched. 2. Locate the locking clip on the top of the fan housing. While supporting the fan housing, use a flat-blade screwdriver to raise up the clip approximately 1 4 inch. Caution When the clip is raised, the fan becomes loose and could fall. Be sure to support the fan during removal and installation.

Loud fan noise coming from inside the computer

Power Mac Fan Noise

The grill on the bottom of the iMac G5 lets a trio of fans draw cool air into the system. Advanced thermal software spins the fans fast or slow as needed, passing the heated air through a slit on the back cover. As the system usage increases, the fans will adjust their speed using advanced thermal software to meet the cooling needs of the system. Accumulating dust can obstruct the flow of air through the system causing the fans to run faster than normal. In severe cases the system may overheat...

Replacing the Midplane Assembly

Thermal Hdd Sensors

Remove the replacement midplane from its packaging. 3. Make sure that the black video cable is tucked into the groove on the bezel as shown. A cutout on the midplane chassis lines up with the groove on the display bezel assembly housing 4. Lower the midplane into the display bezel assembly housing. Use the tab to lower and adjust the midplane into the housing. As you lower the midplane, pull the inverter cable through the opening in the chassis. 5. Locate the hard drive. Before lowering the...

Replacement Parts

If a logic board and or power supply must be replaced, order on a like-for-like basis only. The following parts are eligible to be replaced under this repair extension program 661-3595 Board, Logic, 1.6GHz, No Optical, iMac G5 17 661-3596 Board, Logic, 1.6GHz, w Optical, iMac G5 17 661-3597 Board, Logic, 1.8GHz, w SuperDrive, iMac G5, 17 661-3599 Board, Logic, 1.8GHz, w SuperDrive, iMac G5, 20 661-3350 Power Supply, Non-PFC iMac G5 20 only applies to units sold in US Canada Japan 661-3351 Power...

The mouse is slow to respond

Try putting the mouse on a different surface - an opaque surface with no patterns is best. 2. Adjust the settings on the mouse. - Choose Apple menu gt System Preferences and click Keyboard amp Mouse. - Drag the Tracking Speed slider to select how fast the pointer moves. Drag the Double-Click Speed slider to set how fast you have to double-click. 3. If the mouse still doesn't work, insert the iMac Software Install and Restore disc that came with your computer. Shut the computer down and then...

IMac G inch

Imac Display Card 2007

Back Cover 076-1113 Non PFC 076-1114 PFC Logic Board 661-3597 1.8 GHz 661-3596 1.6 GHz Back Cover 076-1113 Non PFC 076-1114 PFC 661-3595 1.6 GHz No optical, Education Optical Drive 661-3272 Super Drive 661-3271 Combo Drive AirPort Card 661-3045 AirPort Card Holder 922-6799 AirPort Antenna 922-6793 BlueTooth Card 922-6871 BlueTooth Antenna 076-1179 Microfoam shim Location only, item not shown 922-7671 Optical Drive 661-3272 Super Drive 661-3271 Combo Drive 661-3286 256 MB, DDR 400 661-3287 512...

Removing the Bluetooth Antenna Cable

Imac Bluetooth Antenna

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. 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 that the Bluetooth antenna cable runs underneath the speaker and fan cables. Without...

Loud buzzing ticking or whining noise

The computer may make a loud buzzing, ticking, or whining noise when it's on. The sound may vary depending upon screen brightness or processor load. 1. Determine that this noise is related to the computer by removing and shutting down all other devices in the vicinity of the computer that could be causing a sound. 2. Determine if this is a power supply noise. With the iMac G5 on and running, adjust the screen brightness by pressing the F14 and F15 keys on the keyboard. Does the noise change in...

My Air Port signal seems to be very week

If the AirPort antenna is not plugged in all the way, you may have very short AirPort range. 2. Remove the back cover. Reconnect the antenna cable to the AirPort card. Press the antenna connector firmly, to make sure it's fully connected to the iMac. Replace the cover and reconnect the power cord. 3. Try connecting to your wireless access point now. Did your reception improve Yes It looks like the AirPort antenna had not been plugged in all the way. You should be ready to...

Eligible Products

Emc Label Imac

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...

Replacing the Air Port Extreme Card

Remove the replacement AirPort Extreme card from its packaging. 2. Slide the AirPort Extreme card into the AirPort card guide channel until it clicks into place. 3. Connect the antenna cable to the end of the installed AirPort Extreme card. 3. Connect the antenna cable to the end of the installed AirPort Extreme card. 4. Make sure the AirPort Extreme card is flush with the plastic AirPort card guide. 4. Make sure the AirPort Extreme card is flush with the plastic AirPort card guide.

Replacing the Speaker

Note The speaker set includes the two speakers, speaker housing, and attached cable and connector. 2. Secure the microphone cable to the speaker, and apply new tape. Note A strip of new tape comes with both a replacement speaker set and a replacement microphone cable. 3. Attach the speaker that is closest to the lower fan on the chassis. Replace the two screws. 4. Route the speaker cable into the cable guides. Then route the fan cable on top of it. 5. Gently press on the cable guides to...