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iMac Power Supply

A number of iMac computer models contain a power supply board that requires extra caution. These models include:

  • iMac (iSight)
  • iMac (Early 2006)
  • iMac (Mid 2006 17-inch)
  • iMac (Late 2006)

The AC/DC power supply board is a high-voltage source when the unit is under power, and remains powered up whenever the system is plugged in, whether or not the system is turned on. The voltages pose a potential hazard to your personal safety.

Observe these precautions:

  • Make sure the unit is unplugged when working on it with the front bezel removed. Never work on or near the power supply with the unit powered on.
  • Never work alone. In the event of an electrical shock, it is important to have someone present who can provide assistance.
  • Keep one hand in your pocket or behind your back when working on any computer that is plugged in. This will help ensure that your body does not provide a path to ground in the event that you accidentally make contact with the line voltage.
  • Don’t wear jewelry, watches, necklaces, or other metallic articles that could present a risk if they accidentally make contact with the power supply circuitry.
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