Mac pro rear fan replacement




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The fan works well. Thank you to Walter Galan for this easy-to-follow guide and thank you to the guys at the iFixit store for the speedy shipment. Image 4 is very misleading. This is why many people are breaking their connectors. Please correct this and make it VERY clear that one has to put the spudger straight behind the cables, NOT behind the connector, as shown in the pic. Help Translate iFixit. Difficulty Moderate. Steps 6. Time Required 15 minutes. Sections 3. Lower Case 2 steps Battery 1 step Fan 3 steps. Flags 0. Introduction Use this guide to replace a noisy or burned-out fan.

Tools Buy these tools. Parts Buy these parts. Step 1 Lower Case. Add a comment.


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Add Comment Cancel. Note: Processor cage includes two fans, one at each end of cage. Before removing cage fromenclosure, you must release 2 latches on each fan and push fans partway into cage. Processor Cage Fans25 Locate processor cagefans. Note: Latch 4 is oninside of cage. Installing theReplacementFans1 IPosition front fan incage. Processor CageImportant: Before you reinstall cage into enclosure,fans must be insertedpartway into cage. PCIe Fan10 Slide fan intoenclosure so that fantabs engage withslots on metal cage. Processor Tray13 Holding tray bylatches, lower it intoprocessor cage.

Graphics Card15 Reinstall graphics cardin slot 1. If installing a inchcard, make sure cardengages correct slotin PCIe card guide. Hard Drive19 Replace hard drive infar-left drive bay. Closing theComputer1 Replace access panel. Note: Make surelatch is up before youreplace panel. If latchis down, panel willnot seat correctly. Warning: Never turnon computer unlessall its internal andexternal parts are inplace and it is closed.

Operating computerwhen open or missingparts can causedamage or injury. Shut down computer. W ait 1 0 minutes. W arning: Parts inside. Allow comput er.

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Unplug all external 3. Replace power supply. Related symptoms include no video or the computer is hung up. Restart the computer. Reset the power supply by unplugging the AC cord for 10 seconds. Check fan operation. Unplug the AC cord and remove the battery for 10 seconds. You may need to remove a PCI Express card to get to the battery.

Reinstall the battery and restart the computer. Try replacing the logic board. These LEDs come on if an error occurs. ED button being pressed. These two LEDs can operate in two different modes; they will either flash or stay on. If either LED is flashing, it may indicate an initial processor over-temperature condition.

If either LED is solidly on, it may indicate a chronic processor over-temperature condition. Initial processor over- temperature can cause symptoms such as sluggish computer performance. Chronic processor over-temperature can cause the computer to hang completely. Troubleshooting: Verify proper heat sink installation.

Verify all thermal sensors are properly connected. Verify all fans are operating properly, especially the front intake fan. If this LED is on, it indicates there is a graphics card installed and recognized by the computer. It does not indicate that the graphics card is fully functional. Some graphics cards require additional power to function, which is available from connectors on the logic board.

For these cards, if the auxiliary booster power cable is not connected between the logic board and the graphics card, an error message reminding about this additional power connection will be displayed as Mac OS X starts up. Troubleshooting: Check that the graphics card is seated correctly in its PCI slot.

Check that the card's auxiliary booster power cable is connected properly if the card requires one. Try the graphics card in a different PCI slot. Try a different graphics card. Replace the logic board. If an error message about graphic card booster power connection is displayed, check that the appropriate booster power cable is firmly connected between the logic board and the graphics card. If this LED is on, it indicates the power supply is functioning. Troubleshooting: Check that the power cables to the logic board are properly attached. Check the cable connections at the power supply.

Check for any signs of an obvious electrical short, e. Takes approximately 5 seconds after power up. Check that LEDs 2, 3, 4, and 5 are off. Try removing any added hardware.

Mac Pro rear fan replacement

Try removing any added DIMMs. These LEDs will also flash briefly when the computer is started up or shut down and when it goes in and out of sleep mode. This is normal behavior. Troubleshooting: Shutdown and restart the computer. Try reseating the DIMMs. Troubleshooting: Check that the front fan is working. Try re-seating the card in the PCI Slot. Make sure the card's auxiliary booster power cable is connected if there is one.

Re-boot the computer. Try a different video card. Replace the video card. Troubleshooting: Make sure the card's auxiliary booster power cable is connected if there is one. Check connections from the power supply to the logic board. Try a different auxiliary power cable. If the system fails to power on, first reset the SMC as described in this chapter. If the computer still doesn't power on, follow the procedure outlined below to determine whether the issue is related to the power supply.

Verify trickle power Diagnostic LED 1 indicates the presence of trickle power required by the logic board to begin the startup process. Plug in AC power cord, and press the power-on button on the front panel. Because cures are listed on the charts in the order of most likely solution, try the cures in the order presented.

Install Video

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.


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Important: The only way to shut off power completely to the computer and display is to disconnect their power plugs from the power source. Make sure the power cords to the computer and display are within easy reach. Startup Failures When testing a computer for the following symptoms, remove the side access panel so you can better observe or listen for fan movement.

Incorrect installation of DIMMs or incompatible memory will not allow the system to start up correctly. Power-on LED does not illuminate when power button is pressed, fans do not spin, and there is no boot tone or video 1.

How To: Replace or clean the Fan in your MacBook Air 13" (Early 2015)

Verify power outlet is good. Check that diagnostic LED 1 is on when the power cord is connected. Replace power cord. Reset the logic board. Refer to "Resetting the Logic Board" in this chapter. Verify power supply cables are fully connected. Verify that processors are properly seated.

Verify that processors' mounting clamps are properly tightened.

Mac Pro Loud Fan Noise - Apple Community

Test whether the front panel board or power button is at fault. Remove the installed front Mac Pro Troubleshooting — Symptom Charts panel board and test with a known-good front panel board. Replace front panel board. Replace power button. Replace logic board. Power-on LED illuminates when pressed in, but goes out when button is released, there is no boot tone or video, but you can hear a small click 1. Check diagnostic LED 1 for trickle voltage from the power supply. Refer to " Power Supply Verification " in this chapter.

If verification fails, replace power supply. Verify that the processors are properly seated. Verify that the processor mounting clamps are properly tightened. Replace the power supply. Power-on LED illuminates when power button is pressed but fans do not spin or spin only momentarily and there is no boot tone or video 1. Reseat video card. Make sure video card is fully inserted in connector and end of card is secured by the connector latch.

For video cards that require power cables, check that they are connected. Reset logic board. Refer to " Resetting the Logic Board " in this chapter. Reseat processors and check for bent pins. Replace processor. Power-on LED illuminates when power button is pressed and fans spin continuously but there is no boot tone or video 1. Verify speaker cable is fully seated. If the Error LED follows the processor to the other processor location, replace that processor.

Replace logic board Power-on LED illuminates when power button is pressed, fans spin, and boot tone chimes, but there is no video 1. Verify display is properly connected and powered on. Check video card connector and display cable for any bent pins. Replace video card 7. Replace logic board Power-on LED does not illuminate when power button is pressed, but fans spin, boot tone chimes, and there is video 1. Reseat front panel board 2. Replace front panel board 3. Replace logic board 4.

Replace power supply Power-on LED illuminates, fans spin up, no boot tone, and the system shuts down within a few minutes 1. Open the side access panel and observe all diagnostic LEDs. Troubleshoot further if any LEDs indicate any failure. Reseat the processors and check for bent pins 3.

Replace the processors 4. Replace the logic board 5. Verify fan is properly connected. Verify all other fans are working properly. If all fans seem to have failed, the problem is most likely not the fans. Reset the logic board to see if this resolves this problem. Replace fan 4.

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Replace logic board Fans run at high speed computer may shut down or may just hang and not shut down as a result 1. Check for proper ventilation around the exterior of the computer. If either LED is solidly on, it may indicate a chronic processor over temperature condition. Verify proper processor heat sink installation see the take apart section for more information on heat sink installation.


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Verify all thermal sensors and their cables are properly connected, especially the ambient temperature sensor board. Verify all fans are operating properly and are unobstructed, especially the front intake fan. Verify that the proper type of memory is installed. See " Memory " in the Take Apart chapter for more information. Computer performance seems sluggish or slow, or computer is completely hung 1. Start up the computer from a known-good volume, such as its Installation disc, or an external hard drive, to isolate the issue to software or hardware.

If the computer seems to perform adequately when booted in this way, troubleshoot as a software issue. If the computer continues to perform sluggishly when booted this way, continue following the steps below. Run Apple Service Diagnostic to verify hardware is functional. Address any diagnostic failures as necessary.

If either of these LEDs is flashing, this may indicate an initial processor over temperature condition. Initial processor over-temperature can cause symptoms such as sluggish computer performance. A chronic processor over-temperature condition can cause the computer to hang completely. Verify proper processor heat sink installation. Refer to " Processor Heatsinks " in the Take Apart chapter for more information.

Other Failures Optical drive 1. Try different optical media. Both drives should be set to 'Cable Select' mode for proper operation. If two drives are installed, test one optical drive at a time by disconnecting one of the drives to see if the other one works. Replace optical drive cable 5. Replace optical drive 6. Replace logic board Front Panel Fire Wire port 1. Check speaker cable connection 2. Replace speaker 3. Replace logic board AirPort Extreme Card 1.

Start up the computer from a known-good volume such as an external hard drive with AirPort driver software installed, to isolate the issue to software or hardware. If the computer continues to exhibit the issue, follow the steps below. Reseat antenna cables connected to card 3. Replace card 4. Replace logic board Bluetooth Card 1.

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Start up the computer from a known-good volume such as an external hard drive with Bluetooth driver software installed, to isolate the issue to software or hardware. Reseat antenna cable connected to card. Replace card. Audio 10 front headphones 1. Start up the computer from a known-good volume such as its Installation disc or an external hard drive , to isolate the issue to software or hardware.

Reseat front panel board 3. Replace front panel board 4. Replace logic board Audio 10 rear audio line in; rear audio line out 1. If the computer seems to perform Mac Pro Troubleshooting — Symptom Charts adequately when booted in this way, troubleshoot as a software issue. Check Sound settings in System Preferences 3.

Connect the AirPort antenna wires to the connectors on the card. Insert the AirPort Extreme card into its logic board connector at an angle, as illustrated. Then lower the screw end of the card down to the standoffs on the logic board. Install the two AirPort Extreme card mounting screws. Connect the Bluetooth antenna wire to the connector on the Bluetooth card. Lower the card onto the Bluetooth connector on the logic board. Install the two Bluetooth card mounting screws. Before you can install either type of card, however, you must first loosen the two captive screws that secure the PCI bracket to the enclosure and remove the bracket.

You must also remove the port cover for the PCI slot where you are installing the new card. Align the card's connector with the expansion slot and press until the connector is inserted all the way into the slot. Replace the PCI bracket and tighten the two screws that secure it to the enclosure. Connect the booster cable to the card. Holding the card by the top corners, insert it straight down into its expansion slot. Connect the booster cable to the logic board. Note: There are two logic board connectors for booster cables.

Connect the booster cable for a card in PCI slot 1 to the connector that is closest to the heatsink cover. Connect the booster cable for a card in PCI slot 2 to the connector closest to the media shelf.

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