Apple ATI RADEON CABLE HD 4870 User Manual

 Mac Pro

ATI Radeon HD 4870 Card Cable

Replacement Instructions

First Steps

Shut down computer.1

Wait 10 minutes.

2

Warning: Parts inside computer can be very hot. Allow computer to cool down before continuing.

Unplug all external 3

cables except power cord.

Touch metal PCI cover 4

on back of computer.

Unplug power cord.5

Note: Follow these instructions carefully. Failure to do so could damage your equipment and void its warranty.

Opening the Computer

Hold side access 1

panel and lift latch on back of computer.

Warning: Edges of access panel and enclosure can be sharp. Be careful when handling.

Remove access panel 2

and place it on at

surface covered by soft, clean cloth.

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Required Tool

Phillips #1 screwdriver

Removing the Installed Cable

The cable is connected to the graphics card. To

remove the cable, rst

removed the card.

Locate card.1

2

Using Phillips #1 screwdriver, loosen 2 captive screws securing card’s bracket to enclosure.

Remove bracket from 3

enclosure.

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4 Press button on PCIe

fan.

Move fan to left, 5

which releases retention bar.

6 Disconnect card’s

cables from backplane board.

Note: If card is held in place by retention bar, complete steps 4 and 5. Otherwise, release small locking clip at front of card’s connector by pushing clip up. Then go to step 6.

Holding card by top 7

corners, pull it up out of slot and remove card from computer.

Checklist for handling card:

When removing or installing card, handle it only by the edges. Do not touch its connectors • or any components. Don’t rock card from side to side; instead, lift card straight up from connecotr to remove it, • and press card straight into slot to install it. Don’t force card. If you meet a lot of resistance, pull card out. Check connector and slot for • damage or obstructions, then try inserting card again. Pull card gently to see if it is properly connected. If it resists and stays in place and its gold • connectors are barely visible, card is connected.

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8 Disconnect cable

from card.

Installing the Replacement Cable and the Card

Connect replacement 1

cable to card.

2 Re-install card in slot.

Note: You can install

card in PCI slot 1, 2, or

3. Installed in slot 2, it blocks slot 3. Installed in slot 3, it blocks slot

4. Because of card’s height, do not install it in slot 4.

Note: Make sure end of card goes into correct card guide. Then align card’s connector with expansion slot and press down until connector is inserted all the way into slot.

3 Connect card’s cables

to connectors on backplane board.

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If card is held in place 4

by retention bar, slide PCIe fan to the right to lock card in place.

5 Replace PCI bracket

and tighten screws.

Note: Slide bracket under circled tab before securing screws.

Closing the Computer

Replace access panel.

1

Note: Make sure

latch is up before you replace panel. If latch is down, panel will not seat correctly.

Push latch down 2

to close and secure access panel.

Warning: Never turn on computer unless all its internal and external parts are in place and it is closed. Operating computer when open or missing parts can cause damage or injury.

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 Apple Inc.

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Apple is not responsible for typographical, printing, or inadvertent errors.

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