iMac (21.5-inch, Late 2009) Take Apart — General Information 102
2010-11-18
General Information
Opening the Unit
• The iMac (21.5-inch, Late 2009) has a glass panel that attaches to the front, which must be
removed prior to replacing any module on the unit.
• Important: The glass panel should only be removed by Apple-authorized technicians.
Follow all cleaning and handling instructions to prevent damaging glass panel or LCD panel.
• Follow ESD precautions when glass panel is removed.
For more information about ESD, refer to:
kBase #HT3451: Electrostatic Discharge Precautions and Myths
AppleCare Service Training: ESD Precautions
Required Tools
The following tools are required to service an iMac (21.5-inch, Late 2009):
• ESD-safe workstation, including an ESD mat and wrist or heel strap
• ESD bags (for storing ESD-sensitive parts while removed from unit)
• Magnetized Torx T10 screwdriver
• Magnetized Torx T8 screwdriver
• Magnetized Torx T6 screwdriver
• Phillips #2 screwdriver
• Black stick (nylon probe, Apple part #922-5065) or other non-conductive nylon or plastic
at-blade tool
• Kapton tape
• Thermal paste syringe (Apple part #922-9625) for camera
• Magnifying glass, for reading serial number etched on bottom of stand
• Digital volt meter (for troubleshooting)
• Soft, clean towel or cloth (to protect display and removed parts from scratches)
For more information about tools, refer to:
kBase #HT3452: Hand Tools for Desktop and Portable Repairs
In addition, the following software programs are required for troubleshooting:
• Apple Service Diagnostic (ASD), version 3S133 or later
• Apple Hardware Test (AHT), version 3A176 or later
• Bluetooth Service Diagnostic (BSD)