Apple mac pro User Manual

							Mac Pro Take Apart — Power Supply 31
Note: Before beginning the next step, place a soft cloth over the edge of the enclosure to 
prevent scratches from the power supply.
Lift the power supply a short distance and rest it on the edge of the enclosure. 3. 
 
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 32
Starting with the top connector and working down, disconnect the four connectors on the 4. 
power supply cable from the four connectors on the power harness cable. 
  
Note: You must release the locking latch on each power supply cable connector before 
detaching the connector. 
Remove the power supply from the enclosure.5.  
						

							Mac Pro Take Apart — Power Supply 33
Replacing the Power Supply
Note: To protect against scratches, make sure a soft cloth covers the edge of the enclosure next 
to the power supply bay.
Rest the power supply on the edge of the enclosure so that its cable can reach the media 1. 
shelf divider. 
 
Note: The following four steps explain how to reconnect the power supply cable connectors 
with the power harness connectors. When the power harness connectors are in their original 
position in the media shelf divider, it is not possible to see where they mate with the power 
supply cable connectors. 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 34
Starting with the top connector and working down, release the four power harness cable 2. 
connectors from their openings in the media shelf divider. 
Note: Each connector has two locking latches that hold it to the divider. To release the 
connector, depress the bottom latch first and then the top latch. You may find a flat-blade 
screwdriver useful in depressing the latches. 
Placing a hand on either side of the media shelf divider, thread the J1 connector on the 3. 
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 35
Repeat for the other three power supply cable connectors.
Important: 4. The first three connectors on the power supply cable are marked J1, J2, and J3; 
the fourth connector is not marked. The four connectors on the power harness cable are 
marked 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 5. 
power harness connector and reinsert it into its opening in the media shelf divider. 
  
						

							Mac Pro Take Apart — Power Supply 36
Important: Test that all power supply cable connectors and power harness connectors are 
fully seated by tugging on the cables on both sides of each of the four paired connectors. 
Fold the power supply cable on the bottom of the power supply bay.6. 
Lift the power supply and remove the soft cloth from the edge of the enclosure.7. 
Holding the power supply at an angle, as illustrated, lower it into the enclosure until its 8.  
upper right corner slides under the corner lip of the enclosure.   
						

							Mac Pro Take Apart — Power Supply 37
Slide the power supply toward the back of the computer as far as possible.  9. 
Make sure the power receptacle aligns with the opening in the enclosure’s back panel and 10. 
the four screw holes in the power supply align with the screw holes in the media shelf.
Replace the four power supply mounting screws.11 .  
						

							Mac Pro Take Apart — Power Supply Fan 38
Power Supply Fan
Tools
The only tools required for this procedure are a magnetized 2.5 mm hex wrench and needlenose 
pliers. You may also find scissors or wire cutters helpful.
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 3 and • 4
Optical drive carrier and optical drive• s
Any PCI Express cards that block access to the power supply mounting screw• s
Part Location 
						

							Mac Pro Take Apart — Power Supply Fan 39
Procedure
Note: To remove the power supply fan, you must first move the power supply out of the way; you 
do not, however, have to remove the power supply entirely from the enclosure.
Using a magnetized 2.5 mm hex wrench, remove the four power supply mounting screws 1. 
from the bottom of the media shelf. 
Depress the upper right corner of the power supply and slide the power supply toward the 2.  
front of the computer. 
  
						

							Mac Pro Take Apart — Power Supply Fan 40
Note: Before beginning the next step, place a soft cloth over the edge of the enclosure to 
prevent scratches from the power supply.
Lift the power supply a short distance and rest it on the edge of the enclosure. 3. 
 
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.