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Changes to iMac Intel 24" EMC 2134 and 2211 Diagnostic LED's Introduction

Edit by Richdave

Edit approved by Richdave

The 24-inch 2007 and 2008 iMac has's have four diagnostic LEDs on the logic board that can help to troubleshoot the computer. The four LEDs are located to the right of the memory slot, between the memory slot and the HDD SATA connector. A little disassembly is required to be able to easilylocate and observe the LED's. This guide is based on information sourced from the applicable Apple service manual.

** LED interpretation is also applicable to the iMac Intel 20" EMC 2133 and 2210**


  • In Progress removed.