Apple Power Mac 073-0842 User Manual

 Power Mac G4 Cube

Top Plate Assembly

Replacement Instructions

Follow the instructions in this sheet carefully. Failure to follow these instructions could
damage your equipment and void its warranty.

Note:

Written and video instructions covering customer-installable parts are available at

http://www.info.apple.com/installparts/.

Warning: During this procedure, keep small parts away from children.

Tools Required

This procedure requires the following tools:

• Torx T10 screwdriver

• Soft cloth

Electrostatic Discharge (ESD)

Static electricity, a normal and natural phenomenon, builds up on your body as you walk
around. You experience an electrostatic discharge (ESD) when you touch an object and
feel a spark. ESD can cause damage to the internal components of your computer. To
avoid ESD damage, read and follow all instructions.

073-0842 Rev. A

Removing the Computer Core From the Enclosure

Warning: Always shut down your computer before opening it to avoid damaging its
internal components or causing injury. After you shut down the computer, the
internal components can be very hot. Let the computer cool down before
continuing.

1 Place your computer on a clean, flat surface.
2 Shut down your computer by opening the Special menu and choosing Shut Down.

Then wait five minutes for the computer’s internal components to cool down.

3 Unplug all cables from the computer except the power cord.

Note:

If you have never plugged in your computer, connect the computer’s power

cord and plug it in.

4 Turn the computer on its side on a soft, clean cloth, and ground yourself by touching

the bare metal between the video ports.

Figure 1

(Figure 1)

Touch 
Bare 
Metal

Important:

bare metal before you touch any parts or install any components inside the computer.
To avoid static electricity building back up in your body, do not walk around the room
until you have completed the installation and closed the computer.

5 Unplug the power cord.

To avoid electrostatic discharge, always ground yourself by touching the

Power Mac G4 Cube Top Plate Assembly -

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6 Turn the computer upside down, and push down on the latch to release it. Allow the

latch to extend completely.

(Figure 2)

Figure 2

Latch

Extended Latch

7 Gently pull the core from the computer enclosure and place the core on a soft cloth.

(Figure 3)

Figure 3

Core

Enclosure

Power Mac G4 Cube Top Plate Assembly -

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