User Guide

iMac (Early 2006) — What’s New 5
What’s New
Manual Updates
13 November 2006
The DC/DC power supply was incorporated into the “No Power” troubleshooting steps.
October 2006
31 October 2006: Troubleshooting has been updated with a new symptom, “Fans running
at full speed after computer turns on.” Note: The customer may have entered a diagnostic
mode that causes the fans to run at full speed. This symptom is very easy to resolve at the
customer level.
Photos of the EMI tape (922-44786 and 922-5026), used to repair torn and damaged EMI
shielding, have been added to the EMI Shielding section in the General Information chapter.
July 2006
Troubleshooting symptom charts updated : Video Distortion After Waking From Sleep:
Shimmering, vertical lines, Horizontal lines
Logic Board/Take Apart
Added IR board to the “Preliminary Steps” list
In step 5, a note was added to mention the transfer of the metal brackets (clips) to the
new logic board if you replace the logic board
April 2006
The iMac (Early 2006) 20-inch manual has been updated to show only one antenna cable
attached to the AirPort card.
March 2006
A Screw Chart was added.
Access tool modication instructions have been added to General Information.
Troubleshooting symptom added: No audio from internal speakers (may hear faint putt-
putt or motor-boating noise).
Troubleshooting symptom added: No Video, No Boot Chime, White LED ON (Symptom 1)
February 2006
Take Apart chapter: the power supply, memory, AirPort antenna , and Bluetooth antenna
topics have been revised with new photographs.
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