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Introduction

Accessing and removing the power supply unit is relatively straightforward, and will require a 2mm Hex screwdriver.

  1. Lift the lever to unlock the case.
    • Lift the lever to unlock the case.

  2. Remove the side panel of the Mac Pro.
    • Remove the side panel of the Mac Pro.

    • Discharge any static electricity by touching a grounded surface prior to working on any internal components.

  3. The optical drive must be removed to access the power supply unit Firmly grasp the handles of the shown compartment and pull out firmly to remove the optical drive bay. Firmly grasp the handles of the shown compartment and pull out firmly to remove the optical drive bay.
    • The optical drive must be removed to access the power supply unit

    • Firmly grasp the handles of the shown compartment and pull out firmly to remove the optical drive bay.

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  5. Firmly hold each of the two connectors and pull them out of their respective sockets. Firmly hold each of the two connectors and pull them out of their respective sockets.
    • Firmly hold each of the two connectors and pull them out of their respective sockets.

  6. Remove the 4 marked 6-32 hex screws with a 2mm Phillips hex screwdriver. There are a number of Phillips head screws underneath. These don't need to be removed to remove the power supply.
    • Remove the 4 marked 6-32 hex screws with a 2mm Phillips hex screwdriver.

    • There are a number of Phillips head screws underneath. These don't need to be removed to remove the power supply.

    • Note the different PSU for Mac Pro 1,1 through 3,1 versus Mac Pro 4,1 and 5,1.

  7. Be careful when pulling the power supply out, as it has several attached cables which don't have much slack. Grip the handle on the left side of the power supply casing while gripping the right side of the power supply casing and pull upwards firmly to to take it out. Grip the handle on the left side of the power supply casing while gripping the right side of the power supply casing and pull upwards firmly to to take it out.
    • Be careful when pulling the power supply out, as it has several attached cables which don't have much slack.

    • Grip the handle on the left side of the power supply casing while gripping the right side of the power supply casing and pull upwards firmly to to take it out.

  8. For the Mac Pro (Early 2008/9), a.k.a. MacPro3,1 In the MacPro3,1, the power supply screws are 2.5mm hex, not T-10.  Also, there is a cover plate behind the superdrive that has to be removed (2 phillips screws) to expose the power cable connections and those connectors must be detached and slid under fan before the power supply can be removed. For the Mac Pro (Early 2008/9), a.k.a. MacPro3,1 In the MacPro3,1, the power supply screws are 2.5mm hex, not T-10.  Also, there is a cover plate behind the superdrive that has to be removed (2 phillips screws) to expose the power cable connections and those connectors must be detached and slid under fan before the power supply can be removed.
    • For the Mac Pro (Early 2008/9), a.k.a. MacPro3,1 In the MacPro3,1, the power supply screws are 2.5mm hex, not T-10. Also, there is a cover plate behind the superdrive that has to be removed (2 phillips screws) to expose the power cable connections and those connectors must be detached and slid under fan before the power supply can be removed.

  9. Locate the four marked cables Push down on the clip that is above each cable connector while firmly grasping each connector and pull each one back to remove each clip.
    • Locate the four marked cables

    • Push down on the clip that is above each cable connector while firmly grasping each connector and pull each one back to remove each clip.

Eric Kuhta

Member since: 10/12/2014

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Cal Poly, Team 6-24, Maness Fall 2014 Member of Cal Poly, Team 6-24, Maness Fall 2014

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