Apple power mac g5 late 2004 Mounting Instructions

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Power Mac G5 Speaker/Fan Assembly - 
 
7
 
8. If you are replacing the speaker, use a Phillips screwdriver to remove the two screws. 
Then remove the speaker from the speaker/fan bracket. 
 
(Figure 8)
Figure 8
 
9. If you are replacing the fan, use needlenose pliers to pull the fan off the four grommet 
fasteners. Then remove the fan from the bracket. 
 
(Figure 9)
Figure 9