Procedure Fgv
1. Lay the computer so that the front panel is facing down. 2. Remove the black rubber cap that covers the power button LED. 3. Using a jeweler's flat-blade screwdriver, pry up the metal C-ring that secures the power button board. 5. Remove the metal activation ring that lies below the power button board. 6. Remove the power button from the enclosure.
Power Mac G Late Repair Extension Program
The Power Mac G5 Late 2005 Repair Extension Program REP for Power Supply Issues covers repairs for Power Mac G5 Late 2005 computers exhibiting power-related issues due to specific component failure within the computer's power supply. If a Power Mac G5 Late 2005 computer fails to start up after the power button has been pressed and the computer's serial number is within the ranges noted below, the computer may be eligible for repair, free of charge to the customer. There are no known safety...
PowerOn Self Test RAM and Processor Verification
A power-on self test in the computer's ROM automatically runs whenever the computer is started up after being fully shut down the test does not run if the computer is only restarted . If the test detects a problem, the status LED located above the power button on the front of the computer will flash in the following ways 1 Flash No RAM is installed or detected. 2 Flashes Incompatible RAM types are installed or RAM installed in wrong slots. 3 Flashes No RAM banks passed memory testing. 4 Flashes...
Graphics CardPCI Express HI Card
Power Mac G5 Late 2005 computers have four expansion card slots that accommodate PCI Express cards. The computers come with a high-performance 16-lane 16x PCI Express graphics card installed in slot 1. The card contains the graphics processor unit GPU and provides the computers' display ports. You can install additional PCI Express cards in slots 2-4. Install a second card in slot 3, a third in slot 4, and a fourth in slot 2 to take advantage of the bus bandwidth of each slot. Before installing...
Version Processor
Note For steps 3-6, remove or loosen the screws in the order indicated in the illustrations. For Version 2 of the processor, see steps 8-12. 3. Using a 3 mm flathead hex driver, loosen the four captive float plate screws. Do not remove the captive screws from their standoffs. 4. Using a 3 mm flathead hex driver, remove the six long processor mounting screws. 4. Using a 3 mm flathead hex driver, remove the six long processor mounting screws. 5. Using a 3 mm flathead hex driver, remove the four...
Part Location Hog
1. Disconnect the cables from the top and bottom edge of the logic board. 1. Disconnect the cables from the top and bottom edge of the logic board. 3. Using a 9 32-inch nut driver, remove the six logic board standoffs. 4. Using a Phillips 1 screwdriver, remove the three black logic board mounting screws. 5. Move the cables and processor power terminal assemblies out of the way. Then carefully slide the logic board to the left to release it from the three mushroom-head standoffs. 6. Tilt the...
Repair Strategy
Required service parts for this program are available so that certified technicians may repair eligible Power Mac G5 Late 2005 computers at an Apple service provider location. Repairs completed for this program are exempt from the AppleCare Service Excellence program. Customers are responsible for transportation costs to eligible service providers and retail stores. Asia-Pacific, Canada, Europe except IMCs , Japan, United States Warranty Repairs If a Power Mac G5 eligible for this program is...
Overview 1
Media Fan Connector Media Blower Connector Optical Drive Connector Speaker Connector Processor Support Bar Cable Connector Media Fan Connector Media Blower Connector Processor Connector B Connector present on Quad only Processor Connector B Connector present on Quad only
Tools Ygs
1. Using a jeweler's Phillips screwdriver, remove the two combo card mounting screws. 2. Disconnect the combo card antennas from the clip on the side of the PCI divider. 3. Disconnect the combo card from the runway card and lift up a short distance. 4. Disconnect the two antenna cables from the card and remove the card from the enclosure. Replacement Note The cables can attach to either connector on the card. To remove the runway card after removing the combo card , do the following Note The...
Exploded View 1
Power Supply 710 W 661-3737 1 KW 661-3738 GeForce 6600 LE 661-3730 GeForce 6600 661-3731 Quadro FX 4500 661-3732 GeForce 7800 GT 661-3835 Hard Drive 160 GB 661-3733 250 GB 661-3734 500 GB 661-3735 Dual 2.0 2.3 Rear Exhaust Fan 922-7086 Quad Rear Exhaust Fan 076-1047 and 922-6033 Power Supply 710 W 661-3737 1 KW 661-3738
Version Processor 1
Note For steps 8-11, remove or loosen the screws in the order indicated in the illustrations. For Version 1 of the processor, see steps 3-7. 8. Using a 3 mm flathead hex driver, loosen the four captive float plate screws. Do not remove the captive screws from their standoffs. 9. Using a 3 mm flathead hex driver, remove the six long processor mounting screws. 9. Using a 3 mm flathead hex driver, remove the six long processor mounting screws. 10. Using a 3 mm flathead hex driver, remove the four...
Power Cord
The power cord for the Power Mac G5 Late 2005 is a heavy-duty cord that is specific to this model. The Power Mac G5 Late 2005 power cord accommodates the computer's more powerful power supply. Power cords from earlier Power Mac G5 models are not compatible and will not fit the power cord socket on the back of the Power Mac G5 Late 2005 computer. Therefore, to supply power for troubleshooting or testing a Power Mac G5 Late 2005 computer, you must make sure you have on hand its specific power...
Warning Dont press on the end of the heatsink or youll damage the processor
Note For steps 4-7, replace or tighten the screws in the order indicated in the illustrations. 4. Using a 4 mm ballhead hex driver, tighten the four captive screws near the middle of the processor. 5. Using a 3 mm flathead hex driver, replace the four short screws that mount the two processor terminal assemblies. 6. Using a 3 mm flathead hex driver, replace the six long processor mounting screws. 6. Using a 3 mm flathead hex driver, replace the six long processor mounting screws. 8. Reconnect...
Notes for LED Table
Power Mac G5 Late 2005 Dual 2.0 2.3 GHz logic boards include LEDs 1-5 and LED 7, but not LED 6. Power Mac G5 Late 2005 Quad logic boards include LEDs 1-7. CPU A is located closest to the PCI Express slots CPU B is located below CPU A closer to the power supply . Make sure CPU screws are tight. LEDs 3, 4, and 5 operate differently from the other LEDs. They remain off until you remove the air deflector clear door inside the side access panel , at which point they should go on. If LED 3, 4, or 5...
Special CompTIA Code
Apple has created the following CompTIA code to use for repair on Power Mac G5 Late 2005 computers eligible under the Power Mac G5 Late 2005 REP for Power Supply Issues. Use CompTIA Code 663 PMG5 Late 2005 Power Supply REP when replacing a power supply under the Power Mac G5 Late 2005 REP, whether or not the computer is covered by warranty or an extended service agreement. Service providers in Japan who create a mail-in repair for Power Mac G5 Late 2005 computers eligible under the Power Mac G5...
Reimbursement Strategy
Apple is aware that some customers may have paid for out-of-warranty repairs that now qualify under this program. If a customers' Power Mac G5 Late 2005 computer was repaired out of warranty and he she believes the repair qualified under the Power Mac G5 Late 2005 REP for Power Supply Issues, Apple will review the claim and determine if the customer qualifies for reimbursement of the repair cost. If the claim is determined to be eligible for repair under the Power Mac G5 Late 2005 REP, Apple...
Remove the processor heatsink cover
4. Using an ohm meter, measure the resistance across Terminal 1 and Terminal 2 for CPU A. Refer to the Power Supply Verification photo for terminal locations. Hold the meter's probes on the terminals for 5 seconds minimum. Nominal resistance readings should be above 200 ohms. If the resistance is below 10 ohms, replace the power supply. 5. Check for trickle voltage from the power supply. Refer to Power Supply Verification in this chapter. If verification fails, replace power supply. 6. Verify...
Part Location Qmz
1. Disconnect the fan cable from the logic board. Note Press the cable connector up toward the media shelf when disconnecting the cable. 2. Press down on the two tabs on the top of the fan bracket to release the two latches. 3. Lift the fan bracket and fans out of the enclosure. 4. If you are replacing the fans on a Power Mac G5 Late 2005 Quad computer, use needlenose pliers to pull each fan off the four grommets that mount it to the bracket, and remove the fans and cable from the bracket. Then...
Replacement Parts
The only part eligible to be replaced under this repair extension program is the 1 KW AcBel power supply, part number 661-3738. Power Mac G5 Late 2005 computers with quad 2.5 GHz processors must use the 1 KW power supply as the replacement part. However, if you are repairing a 1 KW power supply in a Power Mac G5 Late 2005 computer with either dual 2 GHz or dual 2.3 GHz processors, you may use the 710 W power supply, part number 661-3737, as the replacement part. The following table shows the...
Warning Dont press on the top of the heatsink or youll damage the processor
Note For steps 3-6, remove or loosen the screws in the order indicated in the illustrations. 3. Insert a long-handled 4 mm ballhead hex driver into the two holes on the top of the heatsink and tighten the two captive screws. 4. Using a long-handled 3 mm flathead hex driver, replace the two short screws that mount the power supply terminal. 5. Using a long-handled 3 mm flathead hex driver, replace the four long processor mounting screws. 6. Replace the processor inlet frame on the front of the...
Quadro FX graphics card cable if installed
8. Transfer the port EMI shield from the original logic board to the replacement logic board, making sure the shield is fully seated on the ports. Important Before you install a replacement logic board, remove the protective clips and caps circled in the illustration below and transfer them to the logic board you are returning to Apple. Do not remove the mylar sheet from the board. 1. Temporarily tuck the top cables into the openings in the media shelf so that they are out of the way. Also tape...
Resetting the Logic Board
Some system problems can be resolved by resetting the System Management Unit SMU microcontroller chip on the Power Mac G5 Late 2005 logic board. To reset the logic board, do the following 2. Unplug the computer from its power source. 4. Plug the power cord back in, and turn the computer on. If the computer does not power on, there is something else wrong with it refer to the Startup Failures section of Symptom Charts in this chapter. You can also reset the logic board by pressing the SMU reset...
Part Location Uev
1. Remove the antenna cables from the tape on the inside of the enclosure's side panel and from the channel between the PCI cage and the rear exhaust openings on the inside of the enclosure's back panel. 2. Remove the three screws on the interior antenna board cover. Note This procedure will also release the exterior antenna board cover on the back panel. 3. Using a flatblade screwdriver, pry up the interior antenna board cover and remove the cover from the enclosure. 5. Remove the antenna...
Power Mac G5 Light Sensor
1. Locate the air deflector sensor board inside the enclosure on the bottom right front corner of the frame. You may find a small mirror useful in seeing the board. 2. Disconnect the sensor cable from the air deflector sensor board. 3. Pry up the sensor board from the frame and remove the board from the enclosure. Note Adhesive on the back of the board attaches the sensor board to the frame.
G5 Front Inlet Fan Connector
1. Hold the front inlet fan assembly by the front handle and firmly pull it out of the computer. 1. Hold the front inlet fan assembly by the front handle and firmly pull it out of the computer. Replacement Note To replace the front inlet fan bracket in the enclosure, align the large rail on the bracket with the cutout in the PCI divider and press firmly. Important Make sure the connector on the fan fully engages the fan connector on the logic board, or the computer will not operate properly....
Processor inlet frame Dual GHz 1
1. Using a long-handled 3 mm flathead hex driver, remove the six processor mounting screws. Four long screws mount the upper platform and two short screws mount the power supply terminal on the level below. 2. Insert a long-handled 4 mm ballhead hex driver into the two holes on the top of the heatsink and loosen but do not remove the two captive screws. 3. Holding the processor heatsink by the bottom metal platform, lift the assembly straight up out of the enclosure. Warning The heatsink and...
Eligible Products
The program is available for Power Mac G5 Late 2005 computers that were sold between approximately October 2005 and August 2006 and have a 1 KW AcBel power supply. Eligible computers must meet the following conditions The computer exhibits one of the symptoms described in Program Overview. The computer's serial number falls within a specific range. The power supply label lists AcBel as the manufacturer. To identify an eligible Power Mac G5 Late 2005 computer, first check the computer's serial...
Diagnostic LED Table
Is processor assembly seated properly Check that mounting screws are properly tightened. Remove processor assembly and check for damaged pins on processor connector or logic board connector. Replace processor, if necessary. Replace logic board, if necessary. Check that space is allowed for fans to ventilate. Verify fans and sensors are connected. Reseat front inlet fan. Run Thermal Calibration in Apple Service Diagnostics. Replace processor. Check connections to the power bus bar. Check...
DDR Memory
The Power Mac G5 Late 2005 has eight DIMM slots for PC2 4200, 533 MHz, Double-Data-Rate 2 DDR2 SDRAM DIMMs. The slots are arranged in two banks of four slots each. Power Mac G5 Late 2005 computers come with a minimum of 512 MB of RAM, installed as a pair of 256 MB DIMMs in the two center slots. Additional DIMMs can be installed in the open DIMM slots, as illustrated below. The SDRAM DIMMs must be installed in pairs with one DIMM per bank. equal-sized pairs from the center outward. equal-sized...
Procedure 1
1. If necessary, carefully spread the two tabs holding the battery. 2. Remove the battery from its holder. Replacement Note Insert the new battery in the holder, making sure the battery's negative symbol - faces up. Warning Installing the battery incorrectly may cause an explosion. Be sure the battery's positive and negative sides are correctly oriented in the holder. Use only the same type of battery or an equivalent recommended by the manufacturer of the original. Important Batteries contain...
Thermal Calibration
To ensure proper fan and temperature control in the Power Mac G5 Late 2005 , you must run Apple Service Diagnostic whenever you replace a processor or logic board with a new processor or logic board. Apple Service Diagnostic for Power Mac G5 is available as a download from http www.info.apple.com discimages . Note The calibration process of Apple Service Diagnostic requires a controlled environment to ensure accurate ambient temperature readings. Computers under test must have the transparent...
General Safety Information
The LCS cooling system fluid is predominantly water 80 or greater with a mixture of corrosion inhibitors and bacterial growth preventatives. In normal use in a non-leaking LCS there are no special handling considerations. However, if a leak in the system is suspected or discovered and the computer is plugged in, remove power to the computer by pulling the power plug. Nitrile or rubber glove should be worn when handling an LCS module that is leaking or suspected to be leaking. Evidence of leaks...
PCI Express Cards
Power Mac G5 Late 2005 computers have four expansion card slots that accommodate PCI Express cards. The computers come with a high-performance 16-lane 16x PCI Express graphics card installed in slot 1. The card contains the graphics processor unit GPU and provides the computers' display ports. You can install additional PCI Express cards in slots 2-4. Install a second card in slot 3, a third in slot 4, and a fourth in slot 2 to take advantage of the bus bandwidth of each slot. Before installing...
Differentiating the Power Mac G Late
While Power Mac G5 Late 2005 computers look similar to earlier Power Mac G5 models, you can easily differentiate the Power Mac G5 Late 2005 by checking the back panel. Power Mac G5 Late 2005 computers include two Gigabit Ethernet ports and three USB 2.0 ports, as illustrated below. Earlier models include just one Gigabit Ethernet port and two USB 2.Q ports.
Procedure for NVIDIA Quadro FX Card and Cable
To remove the Quadro FX 4500 card, do the following 1. Remove the two screws that mount the card to the enclosure. 2. Disconnect the Quadro FX 4500 cable from the card. 3. Holding the card by the top corners, gently pull up the card and remove it from its expansion slot. Replacement Note When replacing the Quadro FX 4500 card, position the card over the slot by carefully aligning the end of the card in the first slot in the PCI card guide and the two screw holes in the card fence with the first...
Heatsink For Powermac
Note The combo card's runway card is attached to the PCI divider by two black rivets. Before you can remove the card from the PCI divider, you must remove both rivets and disconnect the card from the logic board. You do not, however, have to remove the runway card or combo card from the enclosure. 1. Using a Xacto knife, pry up and remove the center of the first black rivet that mounts the runway card to the PCI divider. 2. Pry up and remove the outer casing for the rivet. 3. Repeat steps 1 and...
Gotchas
Although the Power Mac G5 Late 2005 computer looks similar to earlier Power Mac G5 models, there are a number of significant service and support differences. Before troubleshooting or servicing a Power Mac G5 Late 2005 , make sure you are familiar with the following points. DDR2 memory The Power Mac G5 Late 2005 computer uses both ECC and NECC DDR2 DIMMs. Refer to DDR2 Memory in the Troubleshooting chapter for more information about identifying and installing these DIMMs. PCI Express expansion...
Take Apart
General Information 21 Orientation 21 Tools 21 Special Tools 21 Power Cord 22 Parts Requiring Enclosure Replacement 22 Take Apart Procedures 22 AirPort Extreme Bluetooth Combo Card and Runway Card 52 Processor Inlet Frame Dual 2.0 2.3 GHz 75
Procedure for All Cards Except NVIDIA Quadro FX
Install video cards in slot 1 only. Install other PCI Express cards in the slots labeled 2, 3, and 4. Warning When removing or installing a card, handle it only by the edges. Do not touch its connectors or any of the components on the card. Lift the card straight out from the connector to remove it, and insert it straight into the connector to install it. Do not rock the card from side to side and don t force the card into the slot. Once the replacement card is installed, pull on it gently to...