Specifications
Logic Board: 21.5-inch Logic Board: 27-inch
Electrical Safety Precautions
Before working on a computer with exposed, potentially energized parts:
1. Remove rings, watches, necklaces, metal-rimmed eyewear, and other metallic articles which increase your risk of electric
shock.
2. Do not wear a cell phone or other signaling device, as these may cause a dangerous startle reflex during energized work.
3. If the iMac needs to be plugged in for LED checks or similar troubleshooting, do NOT wear an ESD wrist strap. Wearing
ESD grounding systems increases your risk of electric shock.
4. Remain alert, focused on the work being performed, and aware of the proximity of grounded objects to your body.
5. Use the plastic black stick or other non-metal extension tool as needed to connect or disconnect cables, to keep fingers
away from potentially energized parts.
Glass Safety Precautions
The iMac (21.5-inch, Late 2012) and iMac (27-inch, Late 2012) has a glass display panel that attaches to the front of the computer, which must be
removed to access internal components.
Important
The display panel's glass is not tempered and will break into sharp pieces if mishandled. Removing the display panel requires
special tools.
Safety Glasses are recommended when removing the display panel.
If for some unforeseen reason, a glass shard enters the eye:
Seek medical attention immediately!
Do not rub your eye if you feel you have something in your eye.
Do not use an eye wash. An eye wash can push or move the shard of glass and cause more damage.
Keep eye closed or even loosely patch the eye to keep eye from moving.
Product Identification
The iMac (21.5-inch, Late 2012) and iMac (27-inch, Late 2012) have an all-aluminum enclosure. The glass front extends all the way to the top, left
and right edges.
Front View