Apple power mac g5 june 2004 User Manual

							
46 Power Mac G5 Take Apart
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.
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Power Mac G5 Take Apart 47

AGP/PCI Card
The Power Mac G5 computer has 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 specifically to accept AGP cards.
Note:  If certain high-end video cards are installed in the AGP slot, the cards block the adjacent 
PCI/PCI-X slot (slot 2). As a result, you can install PCI/PCI-X cards in slots 3 and 4 but not in slot 2. 
For specific card information, see the video card table in the “Video” topic in the Basics chapter.
The Power Mac G5 (June 2004/Early 2005) models have the accelerated graphics port (AGP 8x 
Pro) bus. It’s an enhanced PCI bus with extra functionality that is up to 8 times faster than a 66 
MHz PCI port. The computer comes with a graphics card installed in the AGP 8x Pro slot and has 
ADC and DVI-I connectors or dual DVI-I connectors. The AGP bus is 1.5 V only and is not backward 
compatible. Older AGP cards will not work in these models.
AGP Slot 1PCI Slot 2
PCI Slot 3PCI Slot 4 
						

							
48 Power Mac G5 Take Apart

PCI Cards
The remaining three expansion slots, labeled 2, 3, and 4, accommodate PCI cards up to 12 inches 
long. Depending on the Power Mac G5 model, you can install either PCI or PCI-X cards. 
Note: To determine if a Power Mac G5 computer can accommodate PCI-X cards, check the 
number of DIMM slots on the logic board. Computers with four DIMM slots have 33 MHz PCI slots 
and cannot use PCI-X cards; computers with eight DIMM slots can accommodate 100 and 133 
MHz PCI-X cards. See the chart below.
Card type PCI slot Card speed
PCI* slots 2, 3, and 4 64-bit, 33 MHz
PCI-X slots 2 and 364-bit, 100 MHz 
PCI-Xslot 464-bit, 133 MHz
*The PCI slots can accommodate mixed-voltage (5.0 V, 12 V, or 3.3 V ) cards but only at 3.3 V 
signaling, with 32-bit or 64-bit data widths and a 33 MHz frequency. You can add a 66 MHz card 
to a 33 MHz PCI slot if the card can operate at the lower 33 MHz rate.
Warning: Do not use PCI cards that function only at 66 MHz in the PCI slots. Damage to the 
equipment could result. If you are installing an additional 66 MHz PCI card, rather than replacing 
an existing PCI card like-for-like, check with the card’s manufacturer to see if the new 66 MHz 
card also works at 33 MHz. 
						

							
Power Mac G5 Take Apart 49

Tools
The only tool required for this procedure is a Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer and lay it on its side with the access side facing up.
Part Location
Procedure
Install an AGP video card in slot 1 only. Install either PCI or PCI-X cards in the slots labeled 2, 3, 
and 4. 
Warning: When removing or installing a PCI or AGP card, handle it only by the edges. Do not 
touch its connectors or any of the components on the card. Lift the card straight out from the 
connector to remove it, and insert it straight into the connector to install it. Do not rock the card 
from side to side and don’t force the card into the slot. Once the replacement card is installed, 
pull on it gently to check that it is properly connected.  
						

							
50 Power Mac G5 Take Apart
Remove the screw that mounts the card to the enclosure.
If you are removing an AGP card, pull back the small locking clip at the front of the AGP 
connector.
Holding the card by the top corners, gently pull up the card and remove it from its 
expansion slot.
Replacement Note: Align the card’s connector with the expansion slot and press until the 
connector is inserted all the way into the slot. If you’re installing a 12-inch card, make sure the 
card engages the appropriate slot in the PCI card guide.
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 if its 
gold connectors are barely visible, the card is connected. 
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Power Mac G5 Take Apart 51

AirPort Extreme Card
Only the AirPort Extreme Card may be installed in the Power Mac G5. Older AirPort Cards do not 
work in this computer.
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 
						

							
52 Power Mac G5 Take Apart
Procedure
Carefully disconnect the antenna cable from the end of the AirPort Extreme Card.
Pull the card straight back out of the enclosure.
Replacement Note: Position the AirPort Extreme Card with the ID numbers and barcode facing 
the bottom case and insert the card into the AirPort Extreme Card connector.
Important: Be sure to reconnect the antenna cable to the card.
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Power Mac G5 Take Apart 53

Battery
Tools
No tools are required for this procedure. You may, however, find a flat-blade screwdriver useful in 
removing the battery from its holder.
Preliminary Steps
Before you begin, open the computer and lay it on its side with the access side facing up. If a PCI 
card is installed in the slot next to the battery, remove the card.
Part Location 
						

							
54 Power Mac G5 Take Apart
Procedure
If necessary, carefully spread the tabs holding the battery.
Remove the battery from its holder, noting the orientation of the battery’s positive end. (A 
plus sign is marked on or near the battery holder.) 
Replacement Note: Insert the new battery in the holder, making sure the battery’s positive 
symbol aligns with the positive symbol on or near the holder.
Warning: Installing the battery incorrectly may cause an explosion. Be sure the battery’s positive 
and negative poles are correctly oriented in the holder. Use only the same type of battery or an 
equivalent recommended by the manufacturer of the original.
Important: Batteries contain chemicals, some of which may be harmful to the environment. 
Please dispose of used batteries according to your local environmental laws and guidelines.
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Power Mac G5 Take Apart 55

PCI Card Guide
Tools
The only tool required for this procedure is a Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer and lay it on its side with the access side facing up.
Part Location