Apple mac pro 8x User Manual

							Mac Pro (8x) Take Apart — Mac Pro RAID Card and Battery 61
Disconnect iPass cable from the Mac Pro RAID Card. 4. 
 
Note: You may find it helpful to use a small, flat-blade screwdriver to release the cable 
connector. Depress the rear edge of the silver-colored latch on top of the connector. 
Remove the card from the enclosure.5.  
						

							Mac Pro (8x) Take Apart — Mac Pro RAID Card and Battery 62
The Mac Pro RAID Card includes its own battery.  6. 
If you are replacing the battery on the card, do the following:
• Disconnect the battery cable from the card.
• Remove the four mounting screws and lift the battery from the card.
Important: Do not drop, disassemble, crush, incinerate, or expose the battery to temperatures 
above 212° F (100° C). Stop using the battery if it appears damaged in any way. Replace the 
battery only with an Apple-authorized battery for this computer. Dispose of used batteries 
promptly according to your local environmental guidelines. 
						

							Mac Pro (8x) Take Apart — Mac Pro RAID Card and Battery 63
Replacing the Mac Pro RAID Card
Connect the iPass cable to the Mac Pro RAID Card.1. 
Align the card’s connector with expansion slot 4 and press until the connector is inserted all 2.  
the way into the slot. Make sure the card also engages slot 4 in the PCI card guide.
Note:
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 its • 
gold connectors are barely visible, the card is connected. 
Note: System Profiler does not display the serial number for the Mac Pro RAID Card. You can find 
the serial number by checking the serial number sticker on the back of the card. 
						

							Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 64
Memory Cage with Rear Fan
Tools
The only tools required for this procedure are a long-handled, magnetized #1 Phillips screwdriver 
and a short-handled, magnetized jeweler’s #1 Phillips screwdriver or right-angle, magnetized #1 
Phillips screwdriver.
Preliminary Steps
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
Any 12-inch PCI Express card• s
Processor heatsink cove• r
Top and bottom memory card• s
Part Location 
						

							Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 65
Procedure
Disconnect the rear fan cable from the logic board. 1. 
Using a long-handled, magnetized #1 Phillips screwdriver, remove the two long screws that 2.  
mount the memory cage to the logic board.
Using a short-handled, magnetized jeweler’s #1 Phillips screwdriver or right-angle, 3. 
magnetized #1 Phillips screwdriver, carefully remove the two short screws that mount the 
memory cage to the bottom panel of the enclosure. 
  
						

							Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 66
Note: To remove the memory cage and fan, you must first slide the fan partway into the 
cage. The fan is held in place by two latches, which you must release before sliding the fan. 
Using your forefinger, reach below the fan and release the latch nearest the logic board.4. 
Using a flat-blade screwdriver, release the second latch nearest the front of the computer. 5. 
Slide the rear fan into the memory cage. 6.  
						

							Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 67
Slide the memory cage and fan toward the power supply far enough that the cage clears the 7. 
bottom edge of the enclosure. Then lift the memory cage and fan out of the enclosure.
Replacement Note: If you are installing a new fan in the memory cage assembly, position the fan 
as illustrated. 
Important: Before you install the cage in the enclosure, the fan should always be inserted 
partway into the cage. 
						

							Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 68
Replacement Note: Before installing the memory cage and fan, make sure all logic board cables 
below the cage are out of the way so that the cage sits properly and the cables are not pinched 
or damaged when you tighten the screws.
Replacement Note: To install the memory cage and fan, maneuver the cage into position in the 
enclosure. Replace one long mounting screw. Then slide the fan toward the back panel, until you 
hear it snap into place.
Replace the other three mounting screws and reconnect the rear fan cable to the logic board. 
						

							Mac Pro (8x) Take Apart — Processor Heatsinks 69
Processor Heatsinks
The Mac Pro (8x) computer uses a special coating on the processor heatsink and processor to 
manage the temperature in the computer. The silver-colored coating comes applied to the 
underside of the heatsink and the top of the processor.
Use the following guidelines when handling the processor heatsink and/or processor:
Wear disposable nitrile or latex gloves.• 
Avoid touching the silver-colored coating on the underside of the heatsink and the top of • 
the processor.
Always make a visual inspection of new or existing heatsinks and processors before • 
installing them in the computer. See “Processor Heatsink and Processor Visual Inspection 
Instructions” in the Troubleshooting chapter for more information.
• When removing or replacing the heatsink and/or processor, do not allow the heatsink to be 
separated from the processor for more than 30 minutes. The special coating on the heatsink 
and processor degrades with exposure to air; more than 30 minutes exposure could result in 
damage to the computer and a repeat, multi-part repair.
Tools
The only tool required for this procedure is a long-handled, magnetized 3 mm flathead hex 
screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove 
the following:
Hard drives and hard drive carriers in drive bays 1 and • 2
PCI Express card installed in slot • 1
Any 12-inch PCI Express card• s
Processor heatsink cove• r
Front fan assembl• y
Top and bottom memory card• s with DIMMs
Memory cage with rear fa• n
IMPORTANT:
If you need to install 
a new heatsink or 
processor, reassemble 
the unit while you are 
waiting for the new 
part to arrive. 
						

							Mac Pro (8x) Take Apart — Processor Heatsinks 70
Part Location
Procedure
Disconnect the 2-pin cable for the upper processor (CPU A) heatsink from the logic board. 1.