Specifications

076-1419 Kit, LCD, Service Refill, iMac (27-inch, Late 2012)
Very High Bond, VHB, 6-piece set, 20-pack, 076-1419, iMac (27-inch) (qty 20)
Display removal wheel (qty 20)
Handle, display removal tool, iMac (qty 1)
Additional Tools and Supplies
Needed to remove, handle and clean the display panel:
922-9468 – ESD bags, 24”x30”, Pkg of 5. To prevent buildup of static charges which may attract dust particles, store the display
panel in an ESD bag when removed from the unit.
922-8258 – ESD bags that will accommodate a 27” display, Pkg of 5
922-8259 – Microfoam bag to store display panel, Pkg of 5
922-8261 – Sticky silicone roller (6-inch) to adhere VHB strips to the display panel
922-8262 – Sticky sheet pads (Clean roller or pick up shards of broken glass)
922-8263 – Polishing cloths, anti-static, optical-grade micro-terry, Pkg of 5
IPA wipes, 95% or higher isopropyl
Software Tools
The following software programs are required for troubleshooting the iMac (21.5-inch, Late 2012) and iMac (27-inch, Late 2012):
1. Apple Service Toolkit (AST): version 1.4.5 or higher
AST provides a selection of tools that provide a quick check of the general components of Intel-based Mac hardware. Typically used to triage and
verify repairs of Mac computers.
2. Apple Service Diagnostic (ASD): version 3S151
ASD can determine if any of the thermal sensors are malfunctioning. When sensors fail, replace the corresponding part.
3. Apple Hardware Test (AHT)
iMac (21.5-inch, Late 2012): Version 3A229
iMac (27-inch, Late 2012): Version 3A234
AHT contains a suite of diagnostics that will test the hardware of your computer. It's a great way to rule out a hardware issue.
4. Mac Resource Inspector (MRI)
MRI is a troubleshooting tool that reveals system errors and reports sensor readings that help identify parts that need replacement.
Before You Begin
Software and Firmware Update
Before you begin troubleshooting, ensure the correct version of OS X is installed. Use Software Update or the Mac App Store to
check for and apply the latest software and firmware updates.
Computers sometimes exhibit symptoms that indicate the wrong version of OS X system software or outdated firmware version is
installed.
Refer to Apple Support article HT1159 to make sure system build is correct for this computer model.
ESD Reminder
Follow ESD precautions when the display panel is removed.