Apple power mac g5 late 2004 User Manual

							
 

Power Mac G5 (Late 2004) Take Apart - 
 
12
 
 Serial ATA Hard Drive Data Cable
 
Replacement Note:
 
 When installing the replacement lower hard drive cable, first route the 
cable through the opening in the hard drive bay.
Then install the lower hard drive with the cable routed above the drive, and connect the 
cable to the drive as illustrated. 
						

							
 

Power Mac G5 (Late 2004) Take Apart - 
 
13
 Optical Drive
Optical Drive
Important:  When installing a replacement optical drive, use the original Apple cables that 
came with the Power Mac G5. 
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer.
Part Location 
						

							
Power Mac G5 (Late 2004) Take Apart - 14
 Optical Drive
Procedure
1. Disconnect the optical drive ribbon cable from the logic board. (The cable connector is 
located under the media shelf that holds the optical drive.)
2. Push the optical drive levers out to release the drive. 
						

							
Power Mac G5 (Late 2004) Take Apart - 15
 Optical Drive 3. Place the 
fingers on one hand inside the opening for the optical drive cable and push 
the edge of the drive forward. The drive will move part way out of the media shelf.
4. Disconnect the power cable from the drive.
5. Route the drive ribbon cable out through the opening in the media shelf and remove  the drive and ribbon cable from the computer. 
						

							
Power Mac G5 (Late 2004) Take Apart - 16
 Optical Drive 6. If you are replacing the drive with a new drive, install the standoffs on the bottom of the 
new drive.
Note for SuperDrives:  Two bags of standoffs are included with the replacement 
drive. Use the standoffs with a Phillips head on Sony drives; use the st\
andoffs with a 
hex head on Toshiba and Pioneer drives.
Note for Combo Drives:  Use only the standoffs that are included with the new drive. 
Do not transfer the standoffs from the original drive to the replacement\
 drive. 
						

							
Power Mac G5 (Late 2004) Take Apart - 17
 Optical Drive 7. Disconnect the ribbon cable from the back of the drive, and then carefully pry the 
cable from the top of the drive. Transfer the cable to the top of the replacement drive, 
and connect the cable to the drive.
Note:  Reusable adhesive tape on the underside of the cable attaches the cable\
 to 
the drive. When removing the cable from the original drive, be careful t\
o keep the 
tape with the cable.
8. Carefully remove the EMI shield from the front of the original drive and transfer it to the  front of the replacement drive.
Replacement Note:  Insert the optical drive part way into the optical drive bay, and 
connect the power cable to the drive. Then bend down the free end of the ribbon cable, 
route it through the opening at the back of the media shelf, and connect the cable to the 
logic board. 
						

							
Power Mac G5 (Late 2004) Take Apart - 18
 Memory (DIMMs)
Memory (DIMMs)
Power Mac G5 (Late 2004) computers have four Dual Inline Memory Module (DIMM) slots. 
Each slot accepts 400 Mhz Double-Data-Rate (DDR) Synchronous Dynamic Random-
Access Memory (SDRAM) devices. 
The computers ship with a minimum of 256 MB of RAM, provided by a pair of 128 MB 
DIMMs installed in the two DIMM slots marked “1.” You can add DIMMs, provided they are 
installed as a pair of equal size, in the two DIMM slots marked “2.” A diagram on the logic 
board near the DIMM slots illustrates how the pairs must be installed.  
						

							
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 Memory (DIMMs) DIMMs must 
fit these speci fications: 
• 400 MHz DDR
• 2.5 volt
• 184-pin module
• Maximum number of memory devices on DDR SDRAM:16.
• Nonparity
• No error correcting codes (ECC)
• Unbuffered (registered or buffered DDR SDRAM cannot be used)
Important:  Always install DIMMs in pairs of equal size. Memory from older Macintosh 
computers is not compatible with the Power Mac G5. Do not use older memory, even if it 
fi ts into the DIMM slots.
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Part Location 
						

							
Power Mac G5 (Late 2004) Take Apart - 20
 Memory (DIMMs)
Procedure
1. Locate the DIMM slots on the logic board.
2. Open the ejectors on the DIMM slot by pushing them out to the sides.
3. Holding the DIMM by both top corners, lift it straight up out of the computer.
Replacement Note:  Align the DIMM in the slot and push both ends of the DIMM down 
until the tabs are vertical and the ejectors snap into place. 
Important:  Do not touch the DIMM connectors. Handle the DIMM only by the edges. 
						

							
Power Mac G5 (Late 2004) Take Apart - 21
 AGP/PCI Card
AGP/PCI Card
Power Mac G5 computers have four expansion card slots, three of which accommodate 
Peripheral Component Interconnect (PCI) cards and one that accepts an advanced 
graphics port (AGP) video card. AGP cards and PCI cards have different connectors, so 
you cannot insert a PCI card into the AGP slot.
Note:  Maximum power consumption for all four expansion slots (the three PCI expansion 
cards and the AGP card) should not exceed 90 watts (W). 
AGP Cards
The AGP video card, installed in slot 1, contains the graphics processor unit (GPU) and 
provides the computer’s display ports. Slot 1 is designed speci fically to accept AGP cards. 
PCI Cards
The remaining three expansion slots, labeled 2, 3, and 4, accommodate PCI cards up to 
12 inches long. 
Note:  Certain high-performance AGP graphics cards, when installed in slot 1, block 
access to the adjacent PCI slot. In this case, PCI cards can be installed in slots 3 and 4 
but not in slot 2.