iMac (27-inch Mid 2010).pdf

 Apple Technician Guide

iMac (27-inch, Mid 2010)

2010-12-09

 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 (27-inch, Mid 2010)

Contents

About This Guide

Updates 10

09 December 2010 10

19 November 2010 10

9 September 2010 10

9 August 2010 10

Apple Technician Guide introduced 27 July 2010 10

Feedback 10

Basics

Overview 12

Identifying Features 13

Product Conigurations 13

Safety Precautions 14

Serial Number Location 15

New Accessories 16

Magic Trackpad 16

Apple Battery Charger 18

Troubleshooting

General Troubleshooting 20

Wireless Troubleshooting 20

Update System Software & Firmware 20

Troubleshooting Theory 20

Hardware vs. Software 21

Common Reset Procedures 21

Power On Self Test (POST) 21

Resetting the System Management Controller (SMC) 22

Resetting Parameter RAM (PRAM) 22

Starting Up in Safe Mode 23

Removing the Battery, Measuring DC Voltage 24

Diagnostics 25

Sensors Errors 25

Sensor Locations 27

Diagnostic LEDs 29

Location of Diagnostic LEDs 29

LED Functions 30

LED Startup Sequence 31

Logic Board Test Points 32

Functional Overview 33

Block Diagram 34

Symptom Charts 35

Startup and Power 35

No Power, Dead Unit 35

Won’t Start Up 37

Intermittent Shutdown 39

Kernel Panic, System Crashes 44

No Video 46

Corrupted Video 48

Burnt Smell/Odor 51

Uncategorized Symptoms 52

Display 53

Backlight Issue/No Backlight 53

Noise / Unstable Flickering 55

LCD Image Issues 58

Incorrect/Missing Colors 60

Distorted/Blurred Image 62

Pixel Anomalies 64

Vertical/Horizontal Lines 65

Non-Uniform Brightness / Color 67

Cosmetic Defects 68

Uncategorized Symptoms 68

Mass Storage 70

Hard Drive Not Recognized 70

Optical Drive Not Recognized 76

Optical Drive Won’t Accept/Eject Media 77

Optical Drive Read/Write Error 78

Optical Drive Not Performing to Speciications 80

Optical Drive Noisy 82

SD Card Will Not Insert Into Slot 83

SD Card Not Recognized 84

Uncategorized Symptoms 85

Communications 86

AirPort/Bluetooth Issues 86

AirPort Card Kernel Panic 89

Ethernet Port/Device Issue 90

Wireless Input Device Does Not Pair 91

Uncategorized Symptoms 93

Input/Output Devices 94

Apple Remote Inoperable 94

Audio: Microphone 96

Audio: Built-in Speakers Have Distorted Sound 97

Audio: No Audio from Built-in Speakers 98

Camera Issues 101

FireWire Device Not Recognized 102

USB Device Not Recognized 104

Wired Keyboard Does Not Function Properly 106

Keyboard: Speciic Keys Do Not Respond 108

Wired Keyboard/Mouse Not Recognized 108

Wireless Input Device Does Not Pair 110

Apple Wireless Mouse/Magic Trackpad Erratic Tracking 113

Wireless Input Device Loses Connection 114

Apple Battery Charger Does Not Charge Batteries 116

Mechanical 118

Noise/Hum/Vibration 118

Fan Failures / Thermal Issues 121

Stand/Hinge Issues 122

Physical Damage 123

Uncategorized Symptoms 123

Take Apart

General Information 125

Opening the Unit 125

Required Tools 125

Required Special Tools for Glass Panel 126

Cleaning Tools Starter Kit 126

Cleaning & Handling the Glass Panel 127

Do’s and Don’ts 127

Handling a Broken Glass Panel 128

How to Remove a Broken Glass Panel 128

Safety 133

Logic Board Handling 134

Reassembly Steps 134

Note About Images in This Manual 134

Screw Sizes 134

Access Door 135

Memory 137

Removal 138

Reassembly 138

Glass Panel 139

Removal 140

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: