Power mac g5 power on self test
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 check that it is properly connected.
Power Mac G5 Take Apart 49 1. Remove the screw that mounts the card to the enclosure. Holding the card by the top corners, gently pull up the card and remove it from its expansion slot. Replacement Note: Align the card's connector with the expansion slot and press until the connector is inserted all the way into the slot. If you're installing a inch card, make sure the card engages the appropriate slot in the PCI card guide. Don't rock the card from side to side; instead, press the card straight into the slot.
Don't force the card. If you meet a lot of resistance, pull the card out. Check the connector and the slot for damage or obstructions, then try inserting the card again. Pull the card gently to see if it is properly connected. If it resists and stays in place, and if its gold connectors are barely visible, the card is connected. Older AirPort Cards do not work in this computer. Carefully disconnect the antenna cable from the end of the AirPort Extreme Card. Pull the card straight back out of the enclosure. Important: Be sure to reconnect the antenna cable to the card. You may, however, find a flat-blade screwdriver useful in removing the battery from its holder.
If a PCI card is installed in the slot next to the battery, remove the card. If necessary, carefully spread the tabs holding the battery. Remove the battery from its holder, noting the orientation of the battery's positive end. A plus sign is marked on or near the battery holder. Replacement Note: Insert the new battery in the holder, making sure the battery's positive symbol aligns with the positive symbol on or near the holder.
Warning: Installing the battery incorrectly may cause an explosion. Be sure the battery's positive and negative poles 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 chemicals, some of which may be harmful to the environment. Please dispose of used batteries according to your local environmental laws and guidelines. Remove the two screws that mount the PCI card guide to the logic board. Slide the card guide up to release the two latches from the PCI divider, and remove the card guide from the enclosure. Preliminary Steps Before you begin, open the computer, lay it on its side with the access side facing up, and remove the PCI card guide.
Disconnect the speaker and fan cables from the logic board. Important: Be careful that the fan and speaker cables do not catch on the PCI divider as you lift the assembly. If you are replacing the fan, use needlenose pliers to pull the fan off the four grommet fasteners. Then remove the fan from the bracket. Remove the two screws that secure the modem board. Lift the board slightly and disconnect the modem filter cable from the modem board. Remove the modem from the enclosure. Important: Be sure to reconnect the modem filter cable before reinstalling the modem. Disconnect the board from the connector on the logic board.
Disconnect the modem filter cable from the modem board. Remove the two Bluetooth mounting screws. Lift the Bluetooth card straight up a short distance to disconnect it from the logic board. Then turn the card over, and disconnect the Bluetooth antenna cable from the underside the card. Replacement Note: Be very careful connecting the antenna cable to the Bluetooth card.
The connector is fragile and can easily be bent. Place both index fingers under the edge of the heatsink cover near the "G" and press in on the first set of latches. Release the second set of latches under the opposite edge of the cap and lift the cover off the heatsink. Locate the locking rivet that secures the processor heatsink cover to the PCI divider. Using a mat knife or Xacto knife, pry up and remove the plug at the center of the locking rivet.
Warning: If you are not certified to service this product, removing the rivet will void the computer's warranty. Extra rivets are available as part number Power Mac G5 Take Apart 69 3. Screw a cup hook into the center of the remaining rivet and holding onto the hook, rock the rivet back and forth until you work it out of the heatsink cover.
Note: You may find it useful to insert a wooden stick into the hook to help pull out the rivet. Slide the cover to the left to unlatch the four metal latches under the cover. Lift the cover up and off the heatsink. Slide the cover toward the back of the computer and then press down firmly until you feel the cover lock into place. Tilt the processor inlet frame to the left and then up to unlatch the plastic piece from the heatsink. Power Mac G5 Take Apart 73 Note: The processor in this procedure is secured by four screws requiring either a long- handled Phillips screwdriver or a long-handled 2.
To determine which tool to use, check the head of the screw in the unit you are repairing. If the processor mounting screws have a Phillips head, remove the four screws. If the processor mounting screws have a hex head, loosen the four screws but do not remove them from their standoffs. Lift the heatsink and processor straight up out of the computer. Warning: The heatsink and processor are a unit. Never separate the heatsink from the processor, or you will damage the processor and void the warranty. Note: If you have trouble removing the original processor processor feels stuck or installing the replacement processor, check for damaged split standoffs.
One or more may be spread too far open, keeping the processor from fully seating in its connector. Replace any damaged split standoffs with the standoffs included with the processor. Repeat steps 1 -3 for the second processor, if necessary. If you are replacing the processor with a new processor, do the following: When removing the new processor from its packaging, be careful to lift the processor straight up out of the box. Tilting the processor could damage the heatsink seal. Before installing the processor, remove the cap over the processor connector.
Warning: Do not remove the clear plastic strip on the bottom of the processor. Removing the plastic could cause a short in the logic board. Power Mac G5 Take Apart 75 2. Do the following if: a you are replacing the processor with a new processor and b the holes for the mounting screws in the original processor are smaller than the holes for the mounting screws in the new processor.
Otherwise, go to step 3. Remove the four processor standoffs marked by circles in the illustration below. Do not remove the processor locator pin marked by the square. Install the four processor standoff assemblies that came with the replacement processor. Note: Be sure the standoff assemblies are well secured. Use pliers to tighten them. Otherwise, go to step 4. Remove the four processor standoff assemblies marked by circles in the illustration below. Install the four processor standoffs that came with the replacement processor.
Note: Be sure the standoffs are well secured. Power Mac G5 Take Apart 77 4. Lower the processor over the four standoffs. Press down on the base of the heatsink to make sure the processor is connected to the logic board. Firmly tighten the screws in the four standoffs. Note: If you installed standoff assemblies in step 2, the screws are part of the assemblies and require a long-handled hex wrench.
If you stalled standoffs in step 3, the screws are separate Phillips screws included with the replacement processor and require a long-handled Phillips screwdriver. Repeat steps 1 -6 for the second processor, if necessary. Replace the front inlet fan assembly. Important: Whenever you replace a processor with a new processor, you must run Apple Service Diagnostic once the computer is reassembled. For more information, see "Thermal Calibration" in the Troubleshooting chapter.
Except where noted, the procedure for the Panasonic version is the same. Tools This procedure requires a long-handled 2. Note: The processor in this procedure is secured by eight screws requiring a long-handled 2. Loosen the four hex screws marked below, but do not remove them from their standoffs. Loosen the four remaining hex screws but do not remove them from their standoffs.
Hold the heatsink by the middle and lift the heatsink straight up out of the computer. Warning: The heatsink and processor are one unit. Do not attempt to open or service the liquid cooling system. Opening the liquid cooling system may damage your equipment and such damage may not be covered by the limited warranty on your computer. Before installing the processor, remove the caps over the processor connectors.
Delphi version Panasonic version Check to make sure the top edges of both processors align. Power Mac G5 Take Apart 4. Replace the eight standoffs with the new standoffs bundled with the processor.
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Lower the processor over the eight standoffs and two processor connectors. Press down on the middle bridge of the heatsink to make sure the processor is connected to the logic board. Gently rock the heatsink until it feels seated. Warning: Don't press on the end of the heatsink or you'll damage the processor. Tighten the screws in the eight standoffs in the order indicated above. Tighten the remaining screws from step 2. Replace the processor inlet frame on the front of the heatsink. Preliminary Steps Before you begin, open the computer, lay it on its side with the access side facing up and remove the processor.
Release the cable from the PCI divider cable guides. Disconnect the cable from the logic board. Note: This illustration shows the logic board removed from the enclosure. You do not have to remove the logic board to change the cable. 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. Lift the fan bracket and fans out of the enclosure. If you are replacing the fans, 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. Route the modem filter board cable out through the opening in the PCI divider. Disengage the cable from the cable guides on the PCI divider. Power Mac G5 Take Apart 5. Slide the modem filter board back to disengage it from its mounting bracket, and remove the board and cable from the logic board.
Replacement Note: When re-installing the modem filter board in its mounting bracket, be careful to engage the slots in the board with the edges of the bracket. Replacement Note: Be careful when rerouting the modem filter cable that it routes under the black connector for the front inlet fan and out through the correct opening in the PCI divider. Make sure the cable is in place behind all cable guides. Disconnect the black antenna cable from the AirPort Extreme Card if installed.
Disconnect the gray antenna cable from the Bluetooth card if installed. Bend the antenna board shield back far enough so that you can access the two antenna board mounting screws, and remove the screws. Remove the Bluetooth cable gray and AirPort cable black from the cable guides and remove the antenna board and cables from the logic board. Replacement Note: Be careful when rerouting the two antenna cables that they route under the black connector for the front inlet fan. Make sure that the cables are in place behind all cable guides.
Be very careful when removing the caps and disconnecting the cable so that you do not damage the logic board or front panel board. Remove the two caps that cover the front panel board cable connectors. Note: To remove each cap, spread apart the two sides of the cap, and then carefully rock the cap forward and backward until you feel it release.
Disconnect the other end of the cable from the front panel board and remove the cable from the enclosure. Remove the black plastic caps covering the two power supply cable connectors. Note: The caps fit tightly over the connectors. To remove them, rock the caps gently forward and backward as you lift up.
Macintosh Power-On Self Test | The Wax Drum
Press in on the release latch on the first power supply cable connector and disconnect the cable from the logic board. Repeat for the other power supply cable. Remove the two screws that secure the power supply top cover, and remove the cover from the enclosure. Warning: Whenever the power supply cover is removed, be very careful not to drop any screws into the power supply.
Doing so could short out the unit. Remove the four power supply mounting screws on the bottom of the enclosure. Push in on the power receptacle, and slide the power supply toward the front of the computer. Tilt the power supply a short distance out of the bottom of the enclosure. Power Mac G5 Take Apart 7. Disconnect the power harness cable from the power supply. Remove the power supply from the enclosure. Replacement Note: After reconnecting the power supply to the power harness cable, slightly lift the cable so that it does not become wedged under the power supply, and lower the power supply into the enclosure.
Rotate the power supply back flush with the enclosure bottom until it snaps into place.
Then slide the power supply toward the back of the computer, making sure the power receptacle aligns with the opening in the back panel. Position the computer so the power supply is at the top. Disconnect the cables from the logic board. Preliminary Steps Before you begin, open the computer, lay it on its side with the access side facing up, and remove the hard drive s. Using a flat-blade screwdriver, carefully pry the sensor board from the frame.
Note: Double-stick tape on the back of the board attaches it to the frame. Power Mac G5 Take Apart 2.
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Pull the board forward slightly so that you can reach the cable connector. Note: The board's cable may be taped to the frame and therefore offer some resistance. Carefully tug on the cable to release it. Disconnect the media sensor board cable from the board, and remove the board from the enclosure. Replacement Note: Before installing the replacement board, apply the double-stick tape included in the sensor board kit to the back of the board.
Then reconnect the media sensor board cable and press the board to the frame in the location illustrated below. A small mirror to use in locating the board is optional. You may find a small mirror useful in locating the board. Disconnect the sensor cable from the air deflector sensor board.
Power-On Self Test: RAM and Processor Verification Diagnostic LEDs
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. Place the air deflector on a soft, clean cloth. Remove the original sensor label from the air deflector, peel off the backing from the replacement sensor label, and apply it to the air deflector as illustrated.
Disconnect the six cables from the top of the logic board. Using a hex wrench, remove the four standoffs for the upper processor. Using a Phillips screwdriver, remove the remaining processor standoff marked by a square in the illustration below. Repeat the procedure for a second processor, if installed. Remove the five screws that secure the logic board. Carefully tilt the logic board up and maneuver it out of the enclosure, making sure the ports clear the enclosure openings. Note: Perform the following procedures only if you are replacing the logic board with a new logic board. Transfer the following from the original logic board to the replacement board see individual procedures in this chapter for detailed steps : Memory DIMMs AirPort Extreme Card if installed Bluetooth card if installed Modem if installed Power Mac G5 Take Apart Disconnect the thermistor from the logic board.
Warning: You must disconnect the thermistor from the logic board or you will damage th logic board when you remove the PCI divider in step 9. Disconnect the front inlet fan cable from the logic board. You will use this guide to hold the cables for modem, AirPort, and Bluetooth cards if these cards are not installed in the computer. Position the PCI divider on the replacement logic board and install the three mounting screws. Connect the thermistor and front inlet fan cable to the logic board. Power Mac G5 Take Apart 1 1.
Route the modem filter board cable and antenna board cables along the PCI divider. Note: Be careful that the cables route under the black connector for the front inlet fan. In addition, make sure that the cables are in place behind all cable guides and that the modem filter cable routes out through the correct opening in the PCI divider. Connect the modem filter cable to the modem and install the modem on the logic board.
Install the AirPort Extreme Card and Bluetooth card on the logic board and connect their cables to the cards. Install the memory DIMMs on the logic board.
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Power Mac G5 Take Apart 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. Temporarily tape the top six cables to the media shelf so that they are out of the way. Note: You may find a long strip of packing tape useful in securing the cables. Angle the logic board into the enclosure so that the port edge goes in first. Position the logic board on the three guide pins, aligning the ports with the openings in the enclosure.
Slide the board toward the rear of the computer so that the logic board locks onto the guide pins and the ports are fully seated in the back panel openings. Replace the logic board screws and standoffs. Connect the six cables at the top of the logic board to the board. Replace the power supply and reconnect all power supply cables to the logic board. Replace the front panel board cable. Replace the PCI card guide. Replace the rear exhaust fan assembly and reconnect its cable to the logic board.
Replace the processor s. Replace the heatsink cover s. Disconnect the cables from the top of the logic board. Remove the 10 standoffs from the logic board marked by a square in the illustration below. Remove the five screws that secure the logic board marked by a circle in the illustration below. Carefully slide the logic board to the left to unhook the tabs marked by a triangle in the illustration above.
Tilt the logic board up and maneuver it out of the enclosure, making sure the ports clear the enclosure openings. Transfer the following from the original logic board to the replacement board see individual procedures in this chapter for detailed steps : Memory DIMMs AirPort Extreme Card if installed Bluetooth card if installed Modem if installed Ambient board if installed 6. Disconnect the cables from the logic board and from the tabs on the PCI divider.
Turn the logic board over. Remove the three PCI divider mounting screws and remove the divider from the logic board. Connect the cables to the logic board and clip the cables onto the PCI divider. Power Mac G5 Take Apart 1 3. 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.
Do not remove the mylar or tape. Replace the ambient board.
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Power Mac G5 Take Apart Note: When installing the logic board into the computer, make sure the antenna board shield is not bent back away from the case. The shield should touch the case when the logic board is fully installed. Replace the two PCI card guide screws. Replace the processor. Replace the heatsink cover. Important: Whenever you replace a logic board with a new logic board, you must run Apple Service Diagnostic once the computer is reassembled.
The only tool required for this procedure is a Phillips screwdriver.
Locate the modem filter board on the logic board. Remove the screw that secures the metal cover to the modem filter board. Remove the metal cover. Note: The cable routes under the logic board. Power Mac G5 Take Apart 3. Slide the modem filter board off the metal frame to access another screw below the modem filter board. Remove the screw on the metal frame. Pull the EMI fence away from the logic board just enough to free the modem filter board cable from the hole see step 2 on the logic board.
Note: The modem filter board, cable, and EMI are one service part. The only tools required for this procedure are a long-handled and a short-handled Phillips screwdriver. Disconnect the antenna cables from the Bluetooth card and the AirPort Extreme card if installed. Remove the two antenna board mounting screws.
Remove the board with the cables. Replacement Note: If you replace the antenna board, its cables B and C below route underneath the logic board and connect to the Bluetooth card and AirPort Extreme Card on the top side of the logic board. Remove the thermistor from the cable guide on the end of the PCI divider. Turn the logic board over so that bottom of the board faces up. Remove the three screws that secure the PCI divider, and remove the divider from the logic board.
Compress the two latches on the sides of the front inlet fan cable connector, press the connector down through the opening in the PCI divider, and remove the cable from the divider.
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Disconnect the front inlet fan cable and the heatsink cable from the logic board. Power Mac G5 June Dual 2. Remove the ambient board shown below from the connector on the logic board. Disconnect the thermistor cable from the logic board. Remove the thermistor cable from the guide on the PCI divider. Gently rock the board from side-to-side, pulling it straight up and out of the connector.
Compress the two latches on the sides of the fan cable connector, and press the connector down through the opening in the PCI divider. Remove the cable from the PCI divider. Power Mac G5 Take Apart Front Panel Board Tools The only tools required for this procedure are a jeweler's flatblade screwdriver, a long-handled Phillips screwdriver, a short-handled Phillips screwdriver, and a hex wrench.
Using a jeweler's flatblade screwdriver, pry up the metal cap covering the front panel board EMI shield. Using a Phillips screwdriver, remove the two front panel board mounting screws. Carefully pull the board a short distance out of its EMI shield, and disconnect the power button cable from the board. Remove the board and shield from the enclosure.
Replacement Procedure 1. If you are replacing the front panel board with a new front panel board, do the following: Peel the backing off the mylar insulation for the EMI shield, and apply the mylar to the side of the shield, as shown. Power Mac G5 Take Apart Peel the backing off the EMI shield gasket and apply the gasket to the bottom of the shield, making sure the openings in the gasket align with the shield openings.
Thread the power button cable through the opening in the EMI shield and connect the cable to the front panel board. Insert the front panel board into the EMI shield, making sure the ports are fully seated in the openings in the shield. Install the front panel board and EMI shield on the inside front of the enclosure and replace the two mounting screws. Install the metal cap on the EMI shield. Lay the computer so that the front panel is facing down. Remove the black rubber cap that covers the power button LED. Using a flatblade jeweler's screwdriver, pry up the metal C-ring that secures the power button board.
Lift up and remove the power button board. Power Mac G5 Take Apart 6. Remove the power button from the enclosure. To ensure proper safety and handling of the LCS system, please read the following information. 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 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 would include corrosion around fittings in the LCS coolant system, a light green or red liquid present, or a slick or slimy feel when handling the part.
For leaks or spills, wipe up the fluid using rags, paper towels, or other suitable materials. Dispose of all cleaning materials according to local laws and regulations Refer to laws and regulations pertaining to disposal of Antifreeze. Do not combine used coolant with any other chemical. Place the failed LCS module leaking or not in the packaging that the replacement module came in.
Follow the packaging instructions included with the replacement module. Failure to follow the instructions could damage your equipment and void warranty coverage. Safety Guidelines Below is a summary of first aid measures for exposure to the liquid. Eyes: Immediately flush with plenty of water. If wearing contact lenses, after initial flushing, remove contact lenses and continue to flush for 15 minutes. Have eyes examined by a medical professional if irritation persists. Remove contaminated clothing.
The recommended flushing is 15 minutes if pain or irritation occurs. Seek medical attention if irritation or redness develops. Ingestion: Ingestion of this product, while unlikely to occur in its containment, may cause irritation of the mouth and throat, gastric upset, stomach ache, cramps, nausea and vomiting. If professional advice is not available, do not induce vomiting. Contaminated individuals should drink milk, egg whites, or large quantities of water. Never induce vomiting or give diluents milk or water to someone who is unconscious, having convulsions, or unable to swallow.
Memory from older Macintosh computers is not compatible. The LED on the front of the computer flashes three times, and the computer does not startup. When no memory is installed or memory is not installed correctly The computer does not make a normal startup sound. Instead, there is a single tone, and the computer's front LED flashes about once every 5 seconds.
See the " Video " topic in the Basics chapter. However, cards that run at both 66 MHz and 33 MHz may be installed. Check with the card's manufacturer to see if a 66 MHz card also works at 33 MHz. 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 air deflector installed and the door sensor switch must be operable. Units under test should also be located away from heating and air conditioning ventilation systems and the fan exhaust of other machines.
Ambient temperature should not go above 77 degrees Fahrenheit or 25 degrees Centigrade. The PMU is a computer within a computer. Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle. Experts Exchange. Log In. Sign Up. Apple Hardware Apple Hardware. When i press the power button the white led will flash on for a second and a red LED on the motherboard will flash once, the fan on the video card will spin slightly and you hear a click noise but nothing else happens.
Every time you press the power button the same thing happens again. I've tried to pull both processors out and try eitehr one one the top slot to no prevail. Any help would be greatly aprechiated. I think it might be the motherboard, if so, where do i find the model number so that I can try to order a new one? Overall: Level 1. Laptops Notebooks 1. Hardware 1. Who is Participating? Solutions Learn More Through Courses. Experts Exchange Solution brought to you by Enjoy your complimentary solution view. Get this solution by purchasing an Individual license! Start your 7-day free trial.
I wear a lot of hats LVL 1. I pulled the video card out of the system now it will boot up and I can hear the mac chime that it makes on startup but it quckly shuts down right after that. Any suggestions? LVL Ugo Mena Commented: Can you open the DVD drive to insert a disk see hint below? Any valid OS X volumes should show up in the center The original system disk should contain the Apple Hardware Toolkit AHT , run the long version of the utility could take a couple of hours-depending on the amount of memory installed.
Either way it should tell you if your motherboard, or any hardware is bad or not working. Best Regards. In other words, The computer will not boot at all with the video card in its slot, I thought this might indicate a bad video card but it doesn't explain why the system shuts down immediately after? Learn More! If you have another Mac available, you should be able to connect to it's hard drive by booting it into target disk mode.
Connect them both with a firewire cable, then Hold the T button down on the bad one while starting up, continue to hold the T button down until the drive is powered and shows up on your good mac's desktop as an external firewire. If that works, you should be able to run disk utility against it and try to determine what is wrong with the startup. The thing is, I don't have another mac I've pulled everything out of the system and used only one CPU on the top but it is still the same problem, It will boot without the video card but will not stay on fro more than a few seconds.
What was the reason for taking out the 2nd processor? To elimate a possible problem with one of the CPU's or memory. This computer has a brand new power supply. If it is a dual processor G5, than I would replace both processors, in about 10yrs servicing macs, I have never seen a processor go bad, only logic boards motherboard. Probably a good idea to remove everything but one memory module for each processor and make sure each module is in the same slot as the other i.
Based on the lights that you are seeing, it does sound like a logic board or memory issue, but if so you should be able to place your video card into another slot and have it work. I would put both processors back in, place only two memory modules into it, and leave the video card out. I'm going to need to pick up a mac keyboard from somewhere. I put the RAM in matching slots on top and bottom, they weren't before, but now I don't hear the mac "chime" noise. One thing I just noticed is that when I turn it on, sometimes it will turn off immediately, other times it will last longer.
The red led on the motherboard will stay lit the entire time its on. Right as it's powering down by itself you will hear the same clicking noise you hear when it powers up, and the white led above the power switch will flash. I will check back with this thread tomorrow. LVL 5. PC's will see it as a external drive must have software installed to be able to surf threw the drive though i would also try pressing the reset button inside the computer to reset all pram i think its by the battary on the motherboard let me know if this helps but what i have heard if this happens re seating take out and put back in of the processor usually fixes it but since you have done that already it seems it might be the logic board Ya, i've tried to re-seat both processors, memory, etc multiple times.
Everything that is in the system is compatible. It just stopped working one day. It appears to be a bad logic board. Does anyone know where I can find a logic board other than a mac service center? I've tried typing in what I beleive to be the part number but I cannot find anything. Since different revisons exist for many models, either your computer's serial number or the serial number printed on your logic board itself are required before we can fill advanced exchange or outright purchase orders for logic boards.