imac_24_early_08.pdf

 Service Source

iMac (24-inch Early 2008)

20 June 2008

 Apple Inc.

Under the copyright laws, this document may not be copied, in whole or in part, without the

written consent of Apple.

Every efort has been made to ensure that the information in this document is accurate. Apple is

not responsible for printing or clerical errors.

Apple

1 Ininite 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.

iMac (24-inch Early 2008)

Contents

Manual Updates 7

Updated 20 June 2008 7

Product Introduced April 29, 2008 7

Take Apart

General Information 10

What’s New 10

Product Conigurations 11

Opening the Computer 11

Note About Images in This Manual 11

General Tools 12

Required Special Tools 12

View of the iMac with the Front Bezel Removed 14

View of the Modules with the Display Panel Removed 14

View of the Rear Housing and Cables 15

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 the Glass Panel 27

Isopropyl Alcohol (IPA) 28

Cleaning the Silicone Roller 28

Do’s and Don’ts 28

Metal Alignment Pins on the Glass Panel 29

Magnets on the Front Bezel 29

Removing the Glass Panel 30

Replacing the Glass Panel 33

Installing a Replacement Glass Panel 38

iii

Cleaning Tool Kit 41

Cleaning Tool Resources 41

LENSPEN Screen Cleaning Device 42

Ionizing Air Gun 43

Front Bezel 44

Camera Board 50

Battery 53

IR (Infrared) Board 56

AirPort Extreme Board 59

Bluetooth Board 63

LCD Display Panel 66

LCD Temp Sensor Cable 73

Left Speaker 79

Ambient Temp Sensor 83

Ambient Temp Sensor Cable 87

LVDS Display Cable 91

Right Speaker 97

Inverter Cable 100

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 136

Logic Board 140

Video Card 149

Hard Drive Fan 154

Audio Board 157

Hard Drive Data Cable 160

Clutch Cover 163

Stand 166

Clutch Mechanism 171

Chassis 175

Camera Cable 180

Microphone Cable 185

Cable, DC, Power Supply/SATA 190

Rear Cover 195

Troubleshooting

General Information 199

Serial Number 199

Power On Self Test (POST) 200

Firmware Updates 200

Diagnostic LEDs 202

Apple Hardware Test (AHT) Error Codes 204

Logic Board Sensor and Fan Connector Locations, Top Side 206

Logic Board Sensor Locations, Back Side 207

Cleaning Tools for the LCD and Glass 207

LensPen Cleaning Tool 207

Symptom Charts 208

How to Use the Symptom Charts 208

Diagnostics 208

Apple Hardware Test (AHT) Error Codes 209

Power Issues 211

Glass Panel 214

System Shuts Down 215

Display 216

Hard Drive 217

Optical Drive 219

Fan Sound 226

AirPort 231

Bluetooth (also see Wireless Issues topic) 232

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