Apple iMac 24inch Service Repair Manual

ii  Apple Inc. © 2007 Apple Inc. All rights reserved. Under the copyright laws, this document may not be copied, in whole or in part, without the written consent of Apple. Every eﬀort has been made to ensure that the information in this document is accurate. Apple is not responsible for printing or clerical errors. Apple 1 Inﬁnite Loop Cupertino, CA 95014-2084 USA + 1 408 996 1010 www.apple.com Apple, the Apple logo, Mac, and Macintosh are trademarks of Apple Inc., registered in the U.S. and other countries.

iii iMac (24-inch Mid 2007) Contents Manual Updates 7 16 December 2008 7 21 March 2008 7 19 December 2007 7 10 December 2007 8 7 November 2007 8 Take Apart General Information 10 Product View 10 Opening the Computer 10 Note About Images in This Manual 10 Serial Number Location 1 1 General Tools 12 Required Special Tools 12 View of the Main Modules 14 View of the Rear Housing and Cables 14 Back View 15 I/O Ports 16 Cleaning and Handling the Glass Panel 17 Do’s and Don’ts 18 Handling a Broken Glass Panel 18 Safety 19 EMI Shielding 20 Access Door 21 Memory 23 Glass Panel 26 Cleaning and Handling of the Glass Panel 27 Removing the Glass Panel 30 Replacing the Glass Panel 33 Installing a Replacement Glass Panel 38 Front Bezel 43 Camera Board 49

iv Battery 52 IR (Infrared) Board 55 AirPort Extreme Card 58 Bluetooth Card 62 LCD Temp Sensor and Cable 65 Speaker, Left 71 LCD Display Panel 76 Ambient Temperature Sensor Cable 83 Ambient Temperature Sensor 87 LVDS Cable 91 Inverter Cable 96 Speaker, Right 101 Optical Drive Fan 104 CPU Fan 107 Power Supply, AC/DC 110 Hard Drive 117 Hard Drive Sensor Cable 124 Optical Drive 127 Optical Flex Cable 133 Optical Sensor Cable 135 Logic Board 139 Video Card 148 Hard Drive Fan 153 Audio Board 156 Hard Drive Data Cable 159 Clutch Cover 162 Stand 165

v Chassis 170 Clutch Mechanism 175 AC Power Inlet 180 Camera Cable 186 Microphone Cable 191 DC Power Cable 197 Rear Cover 202 Troubleshooting General Information 206 Serial Number 206 Power On Self Test (POST) 207 DDR Memory 208 Diagnostic LEDs 209 Symptom Charts 211 How to Use the Symptom Charts 211 Power Issues 212 Video 213 System Shuts Down 215 Glass Panel 216 Display Panel 217 Hard Drive 218 Optical Drive 220 Fan Sound 225 AirPort 230 Bluetooth 231 IR Remote 232 IR Sensor/Receiver 233 Built-in iSight Camera 234 Speakers 236 Mouse 237 Keyboard 238 Error Beep(s) 240 USB 241 Views iMac (24-inch, Mid 2007)—Upper Exploded View 244 iMac (24-inch 2007)—Lower Exploded View 245 Screw Chart 246

iMac (24-inch Mid 2007) Take Apart — Manual Updates 7 Manual Updates 16 December 2008 Take Apart Power Supply-->Replacing the Power Supply--> Added a “Replacement Note” indicating that • the 240W (661-4422) and 250W (661-4478) power supplies are interchangeable. 21 March 2008 The following chapters have been updated: Troubleshooting-->Glass Panel-->A new procedure has been added describing how to • troubleshoot a system that has contamination on the inside surface of the glass panel. 19 December 2007 The following chapters have been updated: Take Apart Logic Board-->Removing the Logic Board-->Step 5-->Added a “Note” indicating which • service parts should be transferred to the replacement logic board prior to removing the bad logic board. Troubleshooting--> No Video, Boot Chime Heard-->Step 6 was updated and Step 7 which • made reference to a front LED was removed. The iMac Mid 2007 models do not have an LED on the front bezel.

iMac (24-inch Mid 2007) Take Apart — Manual Updates 8 10 December 2007 The following chapters have been updated: Take Apart The AC Power Inlet take apart procedure was removed from the service manual. The AC • Power inlet is not available as a service part. It is part of the rear housing assembly. Order the rear housing if you require a new AC Power Inlet. Troubleshooting Symptom Charts-->Video • -->Added the iMac Graphics Firmware Update 1.0. to the existing sections mentioning “Make sure all software updates have been applied to the computer.” Whenever the video card on an iMac (24-inch Mid 2007) or iMac (20-inch Mid 2007) computer is replaced, ensure that the iMac Graphics Firmware Update 1.0 has been installed before returning the computer to the customer. 7 November 2007 The Take Apart and Troubleshooting chapters in the iMac (20-inch Mid 2007) and iMac (24-inch Mid 2007) Service Manuals have been updated in the following manner: Take Apart DC Power Supply-->Replacing the AC/DC Power Supply-->Step 1: Added “Note: There are two • types of power supplies and each requires a speciﬁc pressure wall. Each power supply comes with the correct pressure wall.” Hard Drive • -->Replacing the Hard Drive-->Step 2: Added “Orient the hard drive with the circuit board side of the drive facing up.” Right Speaker-->Removing the Right Speaker: Graphic of screw location corrected. Troubleshooting Symptom Charts-->Display-->Added symptom “Black and white splotches on the LCD panel • after it runs for awhile.” Symptom Charts-->Video, No Power, Display, System Shuts Down-->Added step to all the • sections noted mentioning: “Make sure all software updates have been applied to the computer. Refer to KBase article 303903, “Intel-based iMac: Installing available updates” or to the Apple Downloads “iMac Software Update 1.2 (Tiger)” or “iMac Software Update 1.3 (Leopard).” Symptom Charts-->Speakers: Can’t hear sound from the speakers-->Step 4-->Verify that the • speaker cable connector is securely attached to the “logic board” not the “audio board.”

iMac (24-inch Mid 2007) Take Apart — General Information 10 General Information Product View Opening the Computer Important: • The glass panel on the iMac should only be removed by Apple authorized technicians. Removing the glass panel requires special tools and they must be used to replace any module other than the SO-DIMMs. Read and follow all of the handling and cleaning recommendations to prevent damaging • the glass and LCD panel. Follow ESD precautions when the front bezel and the LCD display are removed. • Note About Images in This Manual Small diﬀerences in appearance between the images pictured and the actual computer you are servicing may exist, however the steps and sequence are the same unless otherwise noted.

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Apple iMac 24inch Service Repair Manual

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