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 Service Source
Mac Pro
7 August 2006
© 2006 Apple Computer, Inc. All rights reserved.

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   Summary of Contents for Apple Mac Pro

  • Page 1

     Service Source Mac Pro 7 August 2006 © 2006 Apple Computer, Inc. All rights reserved.

  • Page 2: Table Of Contents

    Mac Pro Contents Basics Overview 5 Serial Number Location 6 Take Apart General Information 8 Opening the Computer 9 Hard Drives Optical Drive Carrier and Optical Drives Memory (FB-DIMMs) and Memory Riser Cards 18 PCI Express/Graphics Card 22 Power Supply 26...

  • Page 3: Table Of Contents

    USB Cable 74 Logic Board 77 Front Panel Board 86 Power Button 91 AirPort Antenna Board with Cables 96 Optical Drive Power Cable 100 Optical Drive Data (Ribbon) Cable 103 Ambient Board 106 Troubleshooting General Information 109 Memory 109 PCI Express Cards 110 Internal Cabling Matrix 110 Thermal Calibration 112 Resetting the Logic Board 113...

  • Page 4

     Service Source Basics Mac Pro © 2006 Apple Computer, Inc. All rights reserved.

  • Page 5: Overview

    Overview The Mac Pro form factor is similar to that of earlier Power Mac G5 models. However, the Mac Pro includes several new hardware features, including: • Two dual-core Intel processors All Mac Pro models have two dual-core Intel Xeon processors, effectively making them quad processor computers.

  • Page 6: Serial Number Location

    Serial Number Location To identify a particular Mac Pro computer, check the computer’s serial number. You can find the serial number within the model’s configuration label, which is located on the computer’s back panel directly below the video ports. Mac Pro Basics...

  • Page 7: Take Apart

     Service Source Take Apart Mac Pro © 2006 Apple Computer, Inc. All rights reserved.

  • Page 8: General Information

    For most take-apart procedures, it is recommended that you lay the computer on its side before removing or installing the part. For proper operation, however, Apple recommends that the unit be run in the upright position. The computer should never be operated on its side with the access panel facing down.

  • Page 9: Opening The Computer

    Unplug the power cord. Warning: To avoid damaging its internal components or the components you want to install, always unplug the computer before attempting any take-apart procedure. Put on an ESD wrist strap. Mac Pro — Opening the Computer...

  • Page 10

    Remove the access panel and place it on a flat surface covered by a soft, clean cloth. Replacement Note: Make sure the latch is in the up position before replacing the access panel. If the latch is down, the access panel will not seat correctly in the enclosure. Mac Pro — Opening the Computer...

  • Page 11: Hard Drives

    Hard Drives The Mac Pro computer can accommodate four serial ATA (SATA) 3 Gbps hard drives in its four internal hard drive bays. In most configurations, a single hard drive occupies the far left bay (bay 1). The hard drives must meet the following specifications: •...

  • Page 12

    Part Location Procedure Make sure the latch on the back panel is up, so that the drives and carriers are unlocked. Pull the hard drive out of the drive bay. Mac Pro Take Apart — Hard Drives...

  • Page 13

    Important: Hold the drive by its sides. Be careful not to touch the printed circuit board on the bottom of the drive. Replacement Note: Slide the carrier and drive over the guides and into the drive bay, until you feel the drive snap into place. Mac Pro Take Apart — Hard Drives...

  • Page 14: Optical Drive Carrier And Optical Drives

    Optical Drive Carrier and Optical Drives The Mac Pro computer can accommodate two optical drives in the optical drive bay. If the computer has only one optical drive, it is installed in the top position. Note: To eject the drives, use the following: •...

  • Page 15

    Make sure the latch on the back panel is up, so that the drives and carriers are unlocked. Pull the optical drive carrier part way out of the computer. Mac Pro Take Apart — Optical Drive Carrier and Optical Drives...

  • Page 16

    Note: If you are adding a second drive to the carrier, use the four screws stored on the back of the drive carrier to secure the drive to the carrier. Mac Pro Take Apart — Optical Drive Carrier and Optical Drives...

  • Page 17

    Replacing the Optical Drive Carrier and Optical Drives Important: Use the original Apple cables that came with the computer when you install or replace the optical drives. Attach the power and ribbon cables to the back of the drive(s). Important: Attach the connector on the end of the optical drive ribbon cable and the connector in the middle of the optical drive power cable to the top drive.

  • Page 18: Memory (fb-dimms) And Memory Riser Cards

    Memory Riser Cards The Mac Pro computer has two memory riser cards with a total of 8 memory slots. On each card, the slots are arranged as two banks of two slots each. The computer comes with a minimum of 1 GB of memory, installed as a pair of 512 MB fully buffered, dual inline memory modules (FB- DIMMs) in two of the DIMM slots.

  • Page 19: Preliminary Steps

    Error-correcting code (ECC) Memory from older Macintosh computers is not compatible with Mac Pro. Important: For proper operation of Mac Pro computers, Apple recommends using only Apple- approved Mac Pro FB-DIMMs. Refer to GSX for Apple FB-DIMMs service part numbers.

  • Page 20

    DIMM side up on a soft, clean cloth. Open the ejectors on the DIMM slot by pushing them out to the sides, and remove the DIMM from the riser card. Mac Pro Take Apart — Memory (DIMMs) and Memory Riser Cards...

  • Page 21

    DIMM down until the ejectors snap back up into place. Warning: FB-DIMMs carry heatsinks on either side of the DIMM. Never attempt to remove the heatsinks from the DIMMs. Doing so could damage the DIMM. Mac Pro Take Apart — Memory (DIMMs) and Memory Riser Cards...

  • Page 22: Pci Express/graphics Card

    PCI Express/Graphics Card The Mac Pro logic board includes one double-wide PCI Express graphics slot and three PCI Express expansion slots, for a total of four slots. The computer comes with a graphics card installed in slot 1. You can install additional PCI Express graphics and expansion cards in the remaining three PCI Express expansion slots.

  • Page 23

    This procedure explains how to remove a standard card and a card that includes a booster cable. Before you can remove 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. Mac Pro Take Apart — PCI Express/Graphics Card...

  • Page 24

    • Pull the card gently to see if it is properly connected. If it resists and stays in place and its gold connectors are barely visible, the card is connected. Mac Pro Take Apart — PCI Express/Graphics Card...

  • Page 25

    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. Mac Pro Take Apart — PCI Express/Graphics Card...

  • Page 26: Power Supply

    Hard drives and hard drive carriers in drive bays 3 and 4 • Optical drive carrier and optical drives • Any PCI Express cards that block access to the power supply mounting screws Part Location Mac Pro Take Apart — Power Supply...

  • Page 27

    Using a short-handled, magnetized 2.5 mm hex screwdriver, remove the four power supply mounting screws from the bottom of the media shelf. Depress the upper right corner of the power supply and slide the power supply toward the front of the computer. Mac Pro Take Apart — Power Supply...

  • Page 28

    Note: The power supply is still connected to the enclosure by its cable. To remove the power supply entirely from the enclosure, you must disconnect the power supply cable’s four connectors, which mate with four power harness connectors threaded through openings in the media shelf’s vertical divider. Mac Pro Take Apart — Power Supply...

  • Page 29

    Note: You must release the locking latch on each power supply cable connector before detaching the connector. Remove the power supply from the enclosure. Mac Pro Take Apart — Power Supply...

  • Page 30

    Therefore, the next step shows how to temporarily remove the power harness connectors from the divider for a better line of sight. Mac Pro Take Apart — Power Supply...

  • Page 31

    Placing a hand on either side of the media shelf divider, thread the J1 connector on the power supply cable through the top connector opening in the media shelf divider and connect it to the PS1 connector on the power harness. Mac Pro Take Apart — Power Supply...

  • Page 32

    PS1, PS2, PS3, and PS4. You must connect J1 to PS1, J2 to PS2, etc. Starting at the bottom connector and working up, depress the locking latches on each power harness connector and reinsert it into its opening in the media shelf divider. Mac Pro Take Apart — Power Supply...

  • Page 33

    Lift the power supply and remove the soft cloth from the edge of the enclosure. Holding the power supply at an angle, as illustrated, lower it into the enclosure until its upper right corner slides under the corner lip of the enclosure. Mac Pro Take Apart — Power Supply...

  • Page 34

    Make sure the power receptacle aligns with the opening in the enclosure’s back panel and the four screw holes in the power supply align with the screw holes in the media shelf. Replace the four power supply mounting screws. Mac Pro Take Apart — Power Supply...

  • Page 35: Power Supply Fan

    Hard drives and hard drive carriers in drive bays 3 and 4 • Optical drive carrier and optical drives • Any PCI Express cards that block access to the power supply mounting screws Part Location Mac Pro Take Apart — Power Supply Fan...

  • Page 36

    Using a short-handled, magnetized 2.5 mm hex screwdriver, remove the four power supply mounting screws from the bottom of the media shelf. Depress the upper right corner of the power supply and slide the power supply toward the front of the computer. Mac Pro Take Apart — Power Supply Fan...

  • Page 37

    Note: The power supply is still connected to the enclosure by its cable. When moving the power supply to the edge of the enclosure, be careful not to put too much tension on the cable. Mac Pro Take Apart — Power Supply Fan...

  • Page 38

    Using needlenose pliers, pull out the four grommets that mount the power supply fan to the media shelf divider. Note: You may find scissors or wire cutters useful in snipping off the grommet heads. Mac Pro Take Apart — Power Supply Fan...

  • Page 39

    Rotate the fan and remove it from the enclosure. Mac Pro Take Apart — Power Supply Fan...

  • Page 40

    Connect the cable to the logic board. Rotate the fan into place flush against the media shelf divider. Make sure the back of the fan faces the divider, as illustrated. Mac Pro Take Apart — Power Supply Fan...

  • Page 41

    Then pull to secure the grommet and detach the excess threading tail. (The tail is notched to break off at the correct place.) Repeat for the other three grommets. Mac Pro Take Apart — Power Supply Fan...

  • Page 42

    Holding the power supply at an angle, as illustrated, lower it into the enclosure until its upper right corner slides under the corner lip of the enclosure. Slide the power supply toward the back of the computer as far as possible. Mac Pro Take Apart — Power Supply Fan...

  • Page 43

    Make sure the power receptacle aligns with the opening in the enclosure’s back panel and the four screw holes in the power supply align with the screw holes in the media shelf. Replace the four power supply mounting screws. Mac Pro Take Apart — Power Supply Fan...

  • Page 44: Airport Extreme Card

    The only tool required for this procedure is a magnetized jewelers Phillips #1 screwdriver. Preliminary Steps Before you begin, open the computer, and lay it on its side with the access side facing up. Part Location Mac Pro Take Apart — AirPort Extreme Card...

  • Page 45

    Procedure Remove the two AirPort Extreme card mounting screws. Lift the AirPort Extreme card a short distance from the logic board. Disconnect the AirPort antenna wires from the card. Mac Pro Take Apart — AirPort Extreme Card...

  • Page 46

    Note: If you are not replacing the AirPort card, cover the connectors on the AirPort antenna wires with Kapton or other non-conductive tape to prevent them from shorting out components on the logic board. Mac Pro Take Apart — AirPort Extreme Card...

  • Page 47: Bluetooth Card

    The only tool required for this procedure is a magnetized jewelers Phillips #1 screwdriver. Preliminary Steps Before you begin, open the computer, and lay it on its side with the access side facing up. Part Location Mac Pro Take Apart — Bluetooth Card...

  • Page 48

    Note: If you are not replacing the Bluetooth card, cover the connector on the Bluetooth antenna wire with Kapton or other non-conductive tape to prevent it from shorting out components on the logic board. Mac Pro Take Apart — Bluetooth Card...

  • Page 49: Battery

    Preliminary Steps Before you begin, open the computer, lay it on its side with the access side facing up, and remove any PCI Express cards that block access to the battery. Part Location Mac Pro Take Apart — Battery...

  • Page 50

    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. Mac Pro Take Apart — Battery...

  • Page 51: Processor Heatsink Cover

    Before you begin, open the computer, lay it on its side with the access side facing up, and remove the following: • PCI Express card installed in slot 1 • Top and bottom memory cards Part Location Mac Pro Take Apart — Processor Heatsink Cover...

  • Page 52

    Using a magnetized jeweler’s #1 Phillips screwdriver, remove the two short screws that mount the memory cage to the bottom panel of the enclosure. Mac Pro Take Apart — Processor Heatsink Cover...

  • Page 53

    Slide the memory cage toward the rear panel of the computer. Lift the heatsink cover slightly, rotate it as illustrated, and remove the cover from the enclosure. Mac Pro Take Apart — Processor Heatsink Cover...

  • Page 54

    (The slots on the underside of the cover’s right edge should automatically align with the tabs on the memory cage, once you slide the cage back into its original position.) Mac Pro Take Apart — Processor Heatsink Cover...

  • Page 55: Front Fan Assembly

    Hard drives in drive bays 1 and 2 • Any 12-inch PCI Express cards • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover Part Location Mac Pro Take Apart — Front Fan Assembly...

  • Page 56

    Using a flat-blade screwdriver or the right-angle end of a cover for one of the PCI Express card slots, carefully pry the bottom left corner of the front fan assembly away from the enclosure. Lift the fan assembly out of the enclosure. Mac Pro Take Apart — Front Fan Assembly...

  • Page 57

    Then press down until you hear the fan click into place in the connector on the logic board Replacement Note: Be careful not to crimp any AirPort or Bluetooth antenna wires under the fan assembly. Mac Pro Take Apart — Front Fan Assembly...

  • Page 58: Processor Heatsinks

    Hard drives in drive bays 1 and 2 • Any 12-inch PCI Express cards • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover • Front fan assembly Mac Pro Take Apart — Processor Heatsinks...

  • Page 59

    Part Location Procedure Disconnect the 2-pin cable for the upper processor (CPU A) heatsink from the logic board. Mac Pro Take Apart — Processor Heatsinks...

  • Page 60

    Move the memory cage out of the way so that you can locate the cable connector for the lower processor heatsink. Disconnect the cable. Repeat steps 2 and 3 for the lower processor (CPU B) heatsink. Mac Pro Take Apart — Processor Heatsinks...

  • Page 61

    To ensure the grease spreads evenly over the processor, lightly tighten the heatsink mounting screws in the order indicated below. • To affix the heatsink to the processor, again tighten the screws in the order indicated. Mac Pro Take Apart — Processor Heatsinks...

  • Page 62

    Replacement Note: If you are replacing the lower processor heatsink with a new heatsink, install the enclosed bumpers on either side of the heatsink, as illustrated below. Mac Pro Take Apart — Processor Heatsinks...

  • Page 63: Memory Cage With Rear Fan

    Any 12-inch PCI Express cards • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover • Front fan assembly • Processor heatsinks Mac Pro Take Apart — Memory Cage with Rear Fan...

  • Page 64

    Part Location Procedure Disconnect the rear fan cable from the logic board. Lift the memory cage out of the enclosure. Mac Pro Take Apart — Memory Cage with Rear Fan...

  • Page 65: Processors

    • Any 12-inch PCI Express cards • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover • Front fan assembly • Processor heatsinks • Memory cage Mac Pro Take Apart — Processors...

  • Page 66

    Part Location Procedure Release the latch on the metal processor holder. Note: You may want to use a flat-blade screwdriver to release the latch on the upper processor. Mac Pro Take Apart — Processors...

  • Page 67

    Rotate the top of the holder to the open position. Lift the processor out of the holder. Mac Pro Take Apart — Processors...

  • Page 68

    Also be careful not to touch the gold pins in the processor socket on the logic board. Replacement Note: Before installing a replacement processor, remove the protective cap covering the new processor’s connector. Mac Pro Take Apart — Processors...

  • Page 69

    Replacement Note: Make sure the two logic board bumpers by the upper processor are in place before you reinstall the heatsinks. Note: Unlike in earlier Power Mac G5 computers, replacing a processor in Mac Pro does not require running Apple Service Diagnostic for thermal calibration..

  • Page 70: Speaker Assembly

    Hard drives in drive bays 1 and 2 • Any 12-inch PCI Express cards • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover • Front fan assembly Mac Pro Take Apart — Speaker Assembly...

  • Page 71

    Part Location Mac Pro Take Apart — Speaker Assembly...

  • Page 72

    Remove the three speaker assembly mounting screws. Carefully pivot the speaker assembly a short distance away from the enclosure. Disconnect the speaker assembly cable from the logic board. Remove the speaker assembly from the computer. Mac Pro Take Apart — Speaker Assembly...

  • Page 73

    • Slide the speaker cable through the opening in the speaker bracket. • Using a magnetized jeweler’s #0 Phillips screwdriver, remove the four mounting screws. Remove the speaker and cable from the bracket. Mac Pro Take Apart — Speaker Assembly...

  • Page 74: Usb Cable

    Hard drives in drive bays 1 and 2 • Any 12-inch PCI Express cards • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover • Front fan assembly Mac Pro Take Apart — USB Cable...

  • Page 75

    Part Location Mac Pro Take Apart — USB Cable...

  • Page 76

    Procedure Disconnect the USB cable from connector J201 on the front panel board. Disconnect the USB cable from connector J2D1 on the logic board. Remove the cable from the enclosure. Mac Pro Take Apart — USB Cable...

  • Page 77: Logic Board

    Top and bottom memory cards • Processor heatsink cover • Front fan assembly • Processor heatsinks • Memory cage • Speaker assembly • USB cable • AirPort Extreme card (if installed) • Bluetooth card (if installed) Mac Pro Take Apart — Logic Board...

  • Page 78

    Part Location Mac Pro Take Apart — Logic Board...

  • Page 79

    To keep them out of the way, temporarily tape the antenna cables to the bottom of the media shelf. Important: Be sure to disconnect all cables from the logic board before you remove the logic board mounting screws. Mac Pro Take Apart — Logic Board...

  • Page 80

    Starting at the back panel side of the logic board and working clockwise around the board, disconnect all cables from the logic board. Note: There are 14 cables you will be disconnecting from the logic board. Mac Pro Take Apart — Logic Board...

  • Page 81

    Using a magnetized #1 Phillips screwdriver, remove the eight black logic board mounting screws. Mac Pro Take Apart — Logic Board...

  • Page 82

    Slide the logic board back a short distance from the port openings in the back panel. Make sure the ports clear the openings. Tilt the top edge of the logic board up and maneuver the board out of the enclosure. Mac Pro Take Apart — Logic Board...

  • Page 83

    Replace any missing bumpers. Replacement Note: Also check that the two bumpers are in place by the upper processor on the top side of the logic board. Replace any missing bumpers. Mac Pro Take Apart — Logic Board...

  • Page 84

    • Processors • DIMMs • PCI Express/graphics cards • AirPort Extreme card (if installed) • Bluetooth card (if installed) • You must also transfer the back ports EMI shield to the new board. Mac Pro Take Apart — Logic Board...

  • Page 85

    Replacement Note: To replace the logic board, tilt the board as illustrated and lower it into the enclosure. Note: Unlike in earlier Power Mac G5 computers, replacing a logic board in Mac Pro does not require running Apple Service Diagnostic for thermal calibration.

  • Page 86: Front Panel Board

    Hard drives and hard drive carriers in drive bays 1 and 2 • PCI Express card installed in slot 1 • Any 12-inch PCI Express cards • Top and bottom memory cards • Processor heatsink cover • Front fan assembly Mac Pro Take Apart — Front Panel Board...

  • Page 87

    Part Location Mac Pro Take Apart — Front Panel Board...

  • Page 88

    Procedure Disconnect the optical drive ribbon cable from the logic board and move the cable out of the way. Mac Pro Take Apart — Front Panel Board...

  • Page 89

    • FireWire 800 cable from connector J200 • USB cable from connector J201 • Front panel board power cable from connector J202 • Front panel board audio cable from connector J600 • Power button cable from connector J800 Mac Pro Take Apart — Front Panel Board...

  • Page 90

    Note: If you are replacing the front panel board with a new front panel board, separate the EMI shield from the back of the board and transfer it to the new front panel board. Mac Pro Take Apart — Front Panel Board...

  • Page 91: Power Button

    Hard drives and hard drive carriers in drive bays 1 and 2 • PCI Express card installed in slot 1 • Any 12-inch PCI Express cards • Top and bottom memory cards • Processor heatsink cover • Front fan assembly Mac Pro Take Apart — Power Button...

  • Page 92

    Part Location Mac Pro Take Apart — Power Button...

  • Page 93

    Disconnect the front panel board power cable from the front panel board and move it out of the way. Disconnect the power button cable from the front panel board. Lay the computer so that the front panel is facing down. Mac Pro Take Apart — Power Button...

  • Page 94

    Remove the black rubber cap that covers the power button LED. Using a jeweler’s flat-blade screwdriver, pry up the metal C-ring that secures the power button board. Lift up and remove the power button board. Mac Pro Take Apart — Power Button...

  • Page 95

    Remove the metal activation ring that lies below the power button board. Remove the power button from the enclosure. Mac Pro Take Apart — Power Button...

  • Page 96: Airport Antenna Board With Cables

    • Front fan assembly • Processor heatsinks • Memory cage • Speaker assembly • USB cable • AirPort Extreme card (if installed) • Bluetooth card (if installed) • Logic board Mac Pro Take Apart — AirPort Antenna Board with Cables...

  • Page 97

    Place the computer so that the bottom panel is facing you. Using a jeweler’s flat-blade screwdriver, pry open the two latches on the antenna wire ferrite bead and remove the bead from the wires. Mac Pro Take Apart — AirPort Antenna Board with Cables...

  • Page 98

    Using the jeweler’s flat-blade screwdriver, carefully pry up the rectangular plastic plate on the bottom panel. Using a jeweler’s #0 Phillips screwdriver, remove the four antenna board mounting screws. Mac Pro Take Apart — AirPort Antenna Board with Cables...

  • Page 99

    Tilt the antenna board away from the back panel a short distance. Feed each antenna wire separately out through the small opening in the bottom panel. Remove the antenna board and cables from the enclosure. Mac Pro Take Apart — AirPort Antenna Board with Cables...

  • Page 100: Optical Drive Power Cable

    • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover • Front fan assembly • Optical drive carrier and optical drives Part Location Mac Pro Take Apart — Optical Drive Power Cable...

  • Page 101

    Disconnect the optical drive power cable from the logic board. Insert the logic board end of the power cable into the opening in the media shelf at hard drive bay 1 and remove the cable from the enclosure. Mac Pro Take Apart — Optical Drive Power Cable...

  • Page 102

    Mac Pro Take Apart — Optical Drive Power Cable...

  • Page 103: Optical Drive Data (ribbon) Cable

    Any 12-inch PCI Express cards • PCI Express card installed in slot 1 • Top and bottom memory cards • Processor heatsink cover • Front fan assembly • Optical drive carrier and optical drives Mac Pro Take Apart — Optical Drive Data (Ribbon) Cable...

  • Page 104

    Part Location Procedure Using a magnetized #1 Phillips screwdriver, remove the two mounting screws on the hard drive connector for drive bay 1 and move the connector out of the way. Mac Pro Take Apart — Optical Drive Data (Ribbon) Cable...

  • Page 105

    Disconnect the optical drive data cable from the logic board. Insert the cable into the opening in the media shelf at hard drive bay 1 and remove the cable from the enclosure. Mac Pro Take Apart — Optical Drive Data (Ribbon) Cable...

  • Page 106: Ambient Board

    The only tools required for this procedure are a jeweler’s flat-blade screwdriver. Preliminary Steps Before you begin, open the computer, lay it on its side with the access side facing up, and remove the optical drive carrier and optical drives. Part Location Mac Pro Take Apart — Ambient Board...

  • Page 107

    Locate the ambient board on the inside left corner of the top panel, above the optical drive carrier. Disconnect the ambient board cable from the ambient board. Using a jeweler’s flat-blade screwdriver, carefully pry the board from the enclosure. Mac Pro Take Apart — Ambient Board...

  • Page 108: Troubleshooting

     Service Source Troubleshooting Mac Pro © 2006 Apple Computer, Inc. All rights reserved.

  • Page 109

    Note: DIMMs must be installed in pairs of equal size from the same vendor. In the following illustration, DIMMs in one colored pair do not need to match DIMMs in a different colored pair. Mac Pro Troubleshooting — General Information...

  • Page 110: Pci Express Cards

    Internal Cabling Matrix The table on the next page lists all Mac Pro internal cables that connect to the logic board and are not part of a larger subassembly. Following the table is a map of the logic board connector locations, which are listed in column 5 of the table.

  • Page 111

    Mac Pro Troubleshooting — General Information...

  • Page 112: Thermal Calibration

    Use the diagram below to find the location of the internal cable connectors on the logic board. Thermal Calibration Unlike in earlier Power Mac G5 computers, replacing a processor in a Mac Pro computer does not require running Apple Service Diagnostic for thermal calibration.

  • Page 113: Resetting The Logic Board

    SMC on Mac Pro. You can use the SMC reset switch: From the Apple menu, choose Shut Down (or if the computer is not responding, hold the power button until it turns off). Press the SMC_RST switch, which is located to the right and slightly below the row of diagnostic LEDs.

  • Page 114: Power-on Self Test: Ram And Processor Verification

    System Reset Mac Pro has a system reset switch on the logic board that may be used to restart the system while it is powered up. This switch can be used to determine if a computer that won’t consistently boot from a cold start has power supply issues.

  • Page 115: Diagnostic Leds

    Diagnostic LEDs The Mac Pro logic board includes a set of LEDs to help service providers troubleshoot the computer. The LEDs are located toward the rear of the logic board, under the memory cage, next to PCI card slot 1. You can view these LEDs by removing the computer’s side access panel and looking through the memory cage to the logic board below.

  • Page 116

    Check AC cord is connected to a working AC wall outlet. • Reseat AC Plug. • Check connections of power supply cables to the logic board. • Check power supply cable connections at power supply. • Replace power supply. Mac Pro Troubleshooting — General Information...

  • Page 117

    Troubleshooting: • Verify proper heat sink installation. • Verify all thermal sensors are properly connected. • Verify all fans are operating properly, especially the front intake fan. Mac Pro Troubleshooting — General Information...

  • Page 118

    Troubleshooting: • Check that LED 7 Power On LED is on. • Check that LEDs 2, 3, 4, and 5 are off. • Try removing any added hardware. • Try removing any added DIMMs. Mac Pro Troubleshooting — General Information...

  • Page 119

    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. • Try a different video card. • Replace the video card. Mac Pro Troubleshooting — General Information...

  • Page 120: Power Supply Verification

    Plug in AC power cord, and press the power-on button on the front panel. LED 7 should be green when the DIAG_ LED button is pressed, indicating that the main power is OK and within regulation. Mac Pro Troubleshooting — General Information...

  • Page 121: Symptom Charts

    Verify that processors are properly seated. Check diagnostic LED 2 and/or LED 3. Verify that processors’ mounting clamps are properly tightened. Test whether the front panel board or power button is at fault. Remove the installed front Mac Pro Troubleshooting — Symptom Charts...

  • Page 122

    For video cards that require power cables, check that they are connected. Verify speaker cable is fully seated. Reset logic board. Refer to “Resetting the Logic Board” in this chapter. Check diagnostic LED 2 and/or LED 3 for processor connection Mac Pro Troubleshooting — Symptom Charts...

  • Page 123

    LEDs. Troubleshoot further if any LEDs indicate any failure. Reseat the processors and check for bent pins Replace the processors Replace the logic board Replace the power supply Mac Pro Troubleshooting — Symptom Charts...

  • Page 124: Fans

    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.

  • Page 125: Other Failures

    Front Panel FireWire port Reseat front panel board Replace front panel board Replace logic board Rear FireWire port Replace logic board Front Panel USB 2.0 port Reseat front panel board Replace front panel board Replace logic board Mac Pro Troubleshooting — Symptom Charts...

  • Page 126

    Audio IO (rear audio line in; rear audio line out) 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 Mac Pro Troubleshooting — Symptom Charts...

  • Page 127

    If the computer continues to exhibit the issue, follow the steps below. Check Sound settings in System Preferences Replace logic board Mac Pro Troubleshooting — Symptom Charts...

  • Page 128: Upgrades

     Service Source Upgrades Mac Pro © 2006 Apple Computer, Inc. All rights reserved.

  • Page 129

    The only tool required for this procedure is a magnetized jewelers Phillips #1 screwdriver. Preliminary Steps Before you begin, open the computer, and lay it on its side with the access side facing up. Part Location Mac Pro Upgrades — AirPort Extreme Card...

  • Page 130

    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. Mac Pro Upgrades — AirPort Extreme Card...

  • Page 131

    Install the two AirPort Extreme card mounting screws. Mac Pro Upgrades — AirPort Extreme Card...

  • Page 132

    The only tool required for this procedure is a magnetized jewelers Phillips #1 screwdriver. Preliminary Steps Before you begin, open the computer, and lay it on its side with the access side facing up. Part Location Mac Pro Upgrades — Bluetooth Card...

  • Page 133

    Procedure 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. Mac Pro Upgrades — Bluetooth Card...

  • Page 134

    PCI Express/Graphics Card The Mac Pro logic board includes one double-wide PCI Express graphics slot and three PCI Express expansion slots, for a total of four slots. The computer comes with a graphics card installed in slot 1. You can install additional PCI Express graphics and expansion cards in the remaining three PCI Express expansion slots.

  • Page 135

    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. Mac Pro Upgrades — PCI Express/Graphics Card...

  • Page 136

    • Pull the card gently to see if it is properly connected. If it resists and stays in place and its gold connectors are barely visible, the card is connected. Replace the PCI bracket and tighten the two screws that secure it to the enclosure. Mac Pro Upgrades — PCI Express/Graphics Card...

  • Page 137

    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. Mac Pro Upgrades — PCI Express/Graphics Card...

  • Page 138: Views

     Service Source Views Mac Pro © 2006 Apple Computer, Inc. All rights reserved.

  • Page 139: Exploded View

    Bluetooth Card Processor 922-7289 661-4083 Low AirPort Extreme Card 661-3921 Mid 661-4084 High Logic Board Power Button 661-3919 076-1200 Front Panel Board Battery 922-7678 922-6476 Speaker 922-7676 Bluetooth Antenna Board Enclosure 922-7773 922-7346 AirPort Antenna Board 076-1230 Mac Pro Views...

  • Page 140: Exploded View 2

    PS#2 Cable Power Cable 922-7688 922-7690 Power Supply Front Panel Board PS#3 Audio Cable 922-7689 922-7692 Front Panel Board Power Supply FireWire Cable Control PS#4 922-7691 922-7685 Front Panel Board USB Cable 922-7693 Ambient Board Cable 922-7731 Mac Pro Views...

  • Page 141: External Views

    External Views Front View Optical drive Status light Second optical drive Headphone jack (optional) USB 2.0 ports (2) ® Power button FireWire 800 port FireWire 400 port Mac Pro Views...

  • Page 142

    FireWire 800 port Gigabit Ethernet ports (2) PCI Express expansion slots £ DVI display port 1 £ DVI display port 2 Optical digital audio out port Optical digital audio in port Audio line-in port Audio line-out port Mac Pro Views...

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