Apple 17-INCH MID 2006 Benutzerhandbuch

iMac (17-inch Mid 2006/Late 2006 CD) Take Apart —Hard Drive Fan 

Hard Drive Fan

No tools are required to remove the optical drive fan.

Before you begin, follow steps for removing the following:

Access door
Front bezel
Lower EMI shield
LCD display
Hard Drive
Optical drive
Speakers
Memory
Logic board