Apple Power Mac G5 Instruction Manual
Power Mac G5
Memory
Replacement Instructions
Follow the instructions in this sheet carefully. Failure to follow these instructions could
damage your equipment and void its warranty.
Note:
Online instructions are available at http://www.info.apple.com/installparts/.
Tools Required
No tools are required for this procedure.
About Power Mac G5 Memory
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 RandomAccess 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.
Rev. A
DIMMs must fit these specifications:
• 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:
computers is not compatible with the Power Mac G5. Do not use older memory, even if it
fits into the DIMM slots.
Always install DIMMs in pairs of equal size. Memory from older Macintosh
Opening the Computer
1. Shut down the computer.
Warning:
internal components or the components you are installing. Do not open the computer
or attempt to install items inside it while it is on.
2. Wait 5 to 10 minutes to allow the computer’s internal components to cool.
Warning:
You must let the computer cool down before continuing.
3. Unplug all external cables from the computer except the power cord.
4. Touch the metal PCI access covers on the back of the computer to discharge any
static electricity from your body.
Important:
components inside the computer. To avoid generating static electricity, do not walk
around the room until you have finished working and closed the computer.
Always shut down the computer before opening it to avoid damaging its
After you shut down the system, the internal components can be very hot.
(Figure 1)
Always discharge static before you touch any parts or install any
Power Mac G5 Memory -
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Figure 1
5. Unplug the power cord.
6. Hold the side access panel and lift the latch on the back of the computer.
Warning
careful when handling them.
7. Remove the access panel and place it on a flat surface covered by a soft, clean cloth.
Figure 2
: The edges of the access panel and the enclosure can be sharp. Be very
(Figure 2)
Power Mac G5 Memory -
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