Apple mb13 al late08 Service Manual

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 Apple Technician Guide

MacBook (13-inch, Aluminum, Late 2008)

Updated 2010-06-15

 Apple Inc.

Under the copyright laws, this document may not be copied, in whole or in part, without the written consent of Apple.

Every eort has been made to ensure that the information in this document is accurate. Apple is not responsible for printing or clerical errors.

Apple 1 Innite Loop Cupertino, CA 95014-2084 USA + 1 408 996 1010 www.apple.com

Apple, the Apple logo, Mac, MacBook, and Macintosh are trademarks of Apple Inc., registered in the U.S. and other countries.

Please send feedback to smfeedback4@apple.com.

MacBook (13-inch, Aluminum, Late

2008)

Manual Updates 9

Updated 15 June 2010 9 Updated 14 May 2010 9 Updated 16 November 2009 9 Updated 21 August 2009 9 Updated 19 June 2009 10 Updated 9 June 2009 10 Updated 10 March 2009 10 Updated 16 December 2008 11 Updated 17 November 2008 11 Updated 19 October 2008 12 Updated 17 October 2008 12 Manual introduced 14 October 2008 12

Basics

Overview 14

Identifying Features 14 Note About Images in This Manual 15

Serial Number Location 16

Serial Number On Top Case 16 Transferring the Serial Number 16

General Information 17

Required Tools 17 The Glass Panel 18 Keycap Replacement 18

Troubleshooting

General Troubleshooting 20

Update System Software 20 Troubleshooting Theory 20 Hardware vs. Software 20 Functional Overview 21 Block Diagram 22

Liquid Submersion Indicators 23 Common Reset Procedures 24 Apple Service Diagnostics 25 Clamshell Service Diagnostic Read Me 26 Display Issue: Pixel Anomalies 26

Symptom Charts 28

Startup and Power Issues 28

No Power 28 Won’t Start Up 31 Intermittent Shutdown 34 No Video/Bad Video 38 Battery Isn’t Recognized or Won’t Charge 42 Kernel Panic/System Crashes 45 Battery Run Time Too Short 48 Won’t Run on Power Adapter Alone 48 Power Adapter Issue 49 Noise / Hum / Vibration 51 Burnt Smell / Odor 53 Battery Leaking or Swollen 54 Uncategorized Symptom 54

Communications 55

Ethernet Port/Device Issue 55 AirPort/Bluetooth: Defective Wireless Devices 57 No/Poor Wireless Signal 59 Wireless Input Device Loses Connection 60 AirPort Card: Kernel Panic 62 Wireless Performance Issue / Slow Connection 63 Wireless Input Device Doesn’t Pair 66 Uncategorized Symptom 67

Display 68

Display Anomalies 68 Defective Camera / Built-in iSight Not Operating Correctly 73 Blank / No Video 74 Backlight Issue / No Backlight 75 Quick Check 75 Noise / Unstable Flickering 76 Quick Check 76 Cosmetic Defects 78 Uncategorized Symptom 78

Mass Storage 79

Hard Drive Read/Write Issue 79 Hard Drive Not Recognized/Not Mounting 80 Hard Drive Noisy 82 Optical Drive Won’t Accept/Reject Media 83 Optical Drive Read/Write Data Error 85

Optical Drive Not Recognized/Mount 87 Optical Drive Noisy 88 Optical Drive Not Performing to Specs 90 Uncategorized Symptom 91

Input/Output Devices 92

USB Port Does Not Recognize Known Devices 92 Built-in Keyboard Does Not Work Properly 93 Specic Keys Don’t Work 94 Built-in Trackpad Does Not Work 95 Built-in Keyboard Has Dim or No Keyboard Backlight 96 Built-in Keyboard Is Not Recognized 97 Built-in Trackpad Does Not Track Properly 98 Apple Remote Inoperable 100 Built-in Speaker Has No Audio 101 Distorted Sound from Internal Speaker 102 Uncategorized Symptom 103

Mechanical Issues: Thermals and Enclosure 104

Reset/Power Button Stuck 104 System Runs Hot 105 Clamshell does not stay closed when stored vertically 107 Uncategorized Symptom 107

Take Apart

General Information 109

Connector Types on Logic Board 109 Icon Legend 112 Temperature Concerns 112 Replacement Steps 112

Access Door 113

Removal 114 Replacement 115

Battery 116

Removal 117 Replacement 117

Hard Drive Bracket 119

Hard Drive 121

Removal 122 Replacement 124 Installing Mac OS X and Applications 126 Installing Applications 126

Bottom Case 127

Removal 128 Replacement 129

Memory 130

Removal 131 Replacement 132

Mid Wall 133

Battery Connector Cover 135

Battery Cable Guide 137

Battery Power Cable 139

Removal 140 Replacement 140

Battery Indicator Light (BIL) Cable 141

Removal 142 Replacement 144

Camera Cable Guide 145

Removal 146 Replacement 146

LVDS Cable Guide 147

Display Assembly 149

Removal 150 Replacement 151

Display Clutch Cover 153

Removal 154 Replacement 155

AirPort Card 156

Removal 157 Replacement 158

AirPort Antenna 160

Optical Drive 162

Removal 163 Replacement 164

Optical Drive Flex Cable 166

Right Speaker / Subwoofer 168

Removal 169 Replacement 170

Hard Drive Connector Cable 171

Removal 172 Replacement 173

Fan 174

Keyboard Flex Bracket 176

Trackpad 178

Removal 179 Replacement 182

Logic Board 187

Removal 188 Replacement 191

Left Speaker 193

Removal 194 Replacement 195

MagSafe Board 196

Removal 197 Replacement 197

Heatsink 198

Removal 199 Replacement 200

Microphone Cable 202

Removal 203 Replacement 204

Center Bracket 205

Kensington Lock 206

Hard Drive Front Bracket with IR/Sleep Cable 208

Top Case 210

Additional Procedures

Hinge Replacement and Alignment 213

Views

Exploded Views 216

Main Assembly, 1 of 2 216 Main Assembly, 2 of 2 217 Display Assembly 218

External Views 219

Port View 219

Screw Chart 220

Screw Location Diagrams 222

Bottom Case 222 Display Assembly 223 Top Case 224

Manual Updates

Updated 15 June 2010

Troubleshooting:

• General Troubleshooting: Resetting the System Management Controller (SMC): Updated text to clarify MagSafe LED behavior; deleted text requiring resetting date and time.

Updated 14 May 2010

Basics:

• General Information: Keycap Replacement: Added section about new keycap replacement kit

Troubleshooting:

• Symptom Charts: Startup and Power Issues: Intermittent Shutdown: Revised section

• Symptom Charts: Input/Output Devices: Built-In Keyboard Does Not Work Properly: Revised step 1 of Deep Dive table for keycap kit reference

• Symptom Charts: Input/Output Devices: Specic Keys Don’t Work Properly: Revised step 5 of Quick Check table for keycap kit reference

Updated 16 November 2009

Take Apart:

• General Information: Connector Types: Added replacement note about installing foam gasket on LVDS connector.

• Display Assembly: Added replacement note about installing foam gasket.

• Logic Board: Added replacement note about installing foam gasket.

Updated 21 August 2009

Troubleshooting:

• General Troubleshooting: Troubleshooting Theory: Updated link information

Take Apart:

• Display Assembly: Added reminder about correct position of AirPort cable when reconnecting to AirPort Card

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MacBook (13-inch, Aluminum, Late 2008) Basics — Manual Updates 9

Updated 19 June 2009

Troubleshooting:

• Startup and Power Issues: Modied Noise/Hum/Vibration Deep Dive table, steps 7-8

• Display: Modied Noise/Unstable Flickering Deep Dive table, steps 3-6

Updated 9 June 2009

Troubleshooting:

• Display/Display Anomalies: Added “Deep Dive: Vertical/Horizontal Lines” table

• Built-in Trackpad Does Not Work: Modied Deep Dive table for trackpad replacement

• Built-in Trackpad Does Not Track Properly: Modied Deep Dive table for trackpad replacement

Take Apart:

• Added Trackpad replacement instructions

• Memory: Corrected memory card pin count from 200-pin to 204-pin

• Logic Board: Added reminder to not remove MagSafe screws during logic board service

Views:

• Exploded Views: Added Trackpad part to Main Assembly, 2 of 2

Updated 24 March 2009

Important: When ordering parts, please replace like-for-like. Refer to the exploded view, screw

chart, and the Global Service Exchange (GSX) parts ordering system to further identify part replacement by conguration code.

Views:

• Added part numbers to Main Assembly and Display Assembly exploded views

• Added 5 alternate part numbers to Screw Chart

Updated 10 March 2009

Troubleshooting:

• Updated Knowledge Base article link for Liquid Submersion Indicators.

• Added “Display Issue: Pixel Anomalies” topic

• Intermittent Shutdown: Added new table “Troubleshooting Shutdown Causes”

Take Apart:

• Connector Types: Added keyboard cable image and caution

• AirPort Card: Reworded step 2 under “Replacement”

• Logic Board: Added step for bottom case clip and 2 screws; added step to show MagSafe cable routing

• MagSafe Board: Added port test using unplugged power adapter cable

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MacBook (13-inch, Aluminum, Late 2008) Basics — Manual Updates 10

Updated 16 December 2008

Basics:

• Product Conguratios: Corrected “Better” model number to MB466

• Required Tools: Added EMI-safe tweezers to tools list; added ASD and AHT version numbers

General Troubleshooting:

• Functional Overview: Updated heatsink thermal sensor box; updated memory startup tones

• Block Diagram: Updated memory to DDR3 and Bluetooth to 2.1

• Apple Service Diagnostics: Added new heading and error code sensor chart

Symptom Charts:

• Added step 6 to “Won’t Start Up” quick check chart

• Updated step 6 of “Intermittent Shutdown” deep dive chart

• Updated “No Video/Bad Video” deep dive chart

• Updated “Defective Camera” charts

• Added Unlikely causes to Blank/No Video chart

• Added Unlikely causes to Backlight Issue/No Backlight chart; added symptoms to quick check chart

• Added Unlikely causes to Noise/Unstable Flickering chart

• Updated “Built-In Keyboard Does Not Work Properly” charts

• Updated “Specic Keys Don’t Work” quick check chart; added Unlikely causes

• Updated “Built-In Keyboard Has Dim or No Keyboard Backlight” deep dive chart

Take Apart:

• Connector Types on Logic Board: Added tweezers for Locking Lever ex cable

• Battery: Added note to seat battery connector

• Hard Drive: Replaced steps 4-6 of Installing Mac OS X and Applications

• Display Assembly: Added Important Note reminding technician to install a new thermal pad on the AirPort Card whenever the display assembly is removed and replaced

• AirPort Card: Updated image in replacement step 1; noted using black stick

• Optical Drive: Revised step 3 to disconnect cable

• Fan: Added black stick to release fan connector

• Logic Board: Added tweezers for locking-lever ex cables

• Hard Drive Front Bracket with IR/Sleep Cable: Added tweezers for locking-lever ex cables

Views:

• Exploded View: Display Assembly: Added international AirPort Card part numbers

Updated 17 November 2008

• Take Apart: Added important replacement step in AirPort Card topic alerting technicians to check that the AirPort cable is inserted properly into the AirPort Card connector. If the cable is inserted backwards, it will damage the logic board.

• Troubleshooting: Updated steps in the Burnt Smell/Odor symptom. Added step 3 to the Quick Check table as a reminder to verify AirPort cable connection.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Basics — Manual Updates 11

Updated 19 October 2008

Corrected internal links.

Updated 17 October 2008

• Corrected internal links.

• Take Apart: Reorganized topic sequence following Display Assembly.

• Exploded View: Display Assembly: Corrected display assembly part number to 661-4820.

Manual introduced 14 October 2008

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MacBook (13-inch, Aluminum, Late 2008) Basics — Manual Updates 12

 Apple Technician Guide

Basics

MacBook (13-inch, Aluminum, Late 2008)

Overview

The MacBook (13-inch, Aluminum, Late 2008) computer features a powerful new NVIDIA GeForce 9400M graphics processor, Multi-Touch trackpad, and aluminum body. Refer to more features below.

Identifying Features

The main features and service dierences include:

• Aluminum case

• Glass backlit, glossy, widescreen display panel

• Mini DisplayPort connector

• Battery indicator button on left side

• Illustrations for removing the battery, hard drive, and memory cards are pictured on the

inner side of the access door.

• Product identication label is on top case front edge, visible when the access door and

battery are removed.

• Logic board, MagSafe board, and some other components have a uniform black color with

no component silkscreening.

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MacBook (13-inch, Aluminum, Late 2008) Basics — Overview 14

Product Congurations

The following table shows the MacBook (13-inch, Aluminum, Late 2008) model congurations at introduction:

Feature Better (MB466) Best (MB467)

Intel Core 2 Duo processor 2.0 GHz 2.4 GHz

Memory, DDR3 1066, SO-DIMMs 2 GB (2 x 1 GB);

up to 4 GB (2 x 2 GB)

Hard Drive, Serial ATA 100 5400 rpm

Optical Drive (SATA) 8x DL Super, 9.5 mm 8x DL Super, 9.5 mm Keyboard Standard Backlight Housing Aluminum Aluminum Display 13.3-inch glass LCD, 1280x800, 114 dpi, LED backlight,

Battery 45-Whr Lithium Ion Power Adapter 60 W MagSafe

160 GB; up to 320 GB

glossy nish

2 GB (2 x 1 GB); up to 4 GB (2 x 2 GB)

250 GB; up to 320 GB

Note About Images in This Manual

Because a pre-production model was used for most of the images shown in this manual, you may notice small dierences in appearance between the image pictured and the computer you are servicing. However, although the appearance may dier, the steps and sequence are the same unless noted.

Screw sizes shown are approximate and indicate the total length including the screw head.

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MacBook (13-inch, Aluminum, Late 2008) Basics — Overview 15

Serial Number Location

Serial Number On Top Case

Remove the access door and battery to see the serial number on the inside front wall of the top case.

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Transferring the Serial Number

When replacing a top case, retain the customer’s top case until the repair is complete. Before installing the replacement top case, peel up the serial number label from the original top case and transfer it to the replacement.

MacBook (13-inch, Aluminum, Late 2008) Basics — Serial Number Location 16

General Information

Required Tools

Caution: To prevent scratches or other cosmetic damage to the computer housing, use a soft

cloth as a protective layer when removing and installing the external screws.

The following tools are required to service the computer:

• Clean, soft, lint-free cloth

• ESD wrist strap and mat

• Magnetic Phillips #0 screwdriver

• Magnetic Phillips #00 screwdriver (preferably with a long handle)

• Torx T6 screwdriver

• Black stick (Apple probe tool, part number 922-5065) or other nonconductive nylon or

plastic atblade tool

• Tri-lobe Large #0 driver (Apple part number 922-8991) for trackpad replacement

• Tri-lobe Small #00 driver (Apple part number 922-9013) for trackpad replacement

• Torx T5 screwdriver from regional supply vendor for trackpad replacement

• EMI-safe plastic or nylon tweezers for installing ex cables (optional)

• Thermal grease (Apple thermal compound syringe, part number 922-7144)

• Alcohol wipes

• Permanent marking, felt-tip pen (optional)

• Pencil with eraser

• Foam wedge xture for display assembly removal (Apple part number 922-8779)

• Kapton tape

• Digital volt meter (troubleshooting)

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Refer to Knowledge Base article “Hand Tools for Desktop and Portable Repairs--AP/CA/EU/JP/ LA/US” to purchase tools:

http://docs.info.apple.com/article.html?artnum=500200

In addition, the following software programs are required for troubleshooting:

• Apple Service Diagnostic (ASD), version 3S125 or later

• Apple Hardware Test, version 3A148 or later

MacBook (13-inch, Aluminum, Late 2008) Basics — General Information 17

The Glass Panel

Warning: The glass panel for this model is not a serviceable part. If the glass is broken or

scratched, replace the display assembly. Attempting to remove the glass can permanently shatter the display face and damage other parts.

To clean the glass panel, use the Apple polishing cloth (922-8245) and iKlear Apple Polish or Brillianize anti-static spray cleaning solution. Alternatively, IPA (isopropyl alcohol) can be used.

Keycap Replacement

Service packages of 78 replacement keycaps are now available in the U.S. and Canada (U.S. version keyboard only) for designated MacBook and MacBook Pro computers. The packages allow you to replace individual keycaps rather than the entire top case.

There are four dierent keycap packages, based on the color of the key and the type of keyboard (version D and S).

Part number Key color Keyboard

922-9277 Black Version D 922-9279 Black Version S 922-9278 White Version D 922-9280 White Version S

For step-by-step instructions, refer to the relevant support article: “MacBook/MacBook Pro:

Black Keycap Replacement” (HT4002) or “MacBook: White Keycap Replacement” (HT4003).

For an overview of the dierences among keycap procedures, refer to “MacBook/MacBook

Pro: Keycap Replacement Matrix” (HT4001).

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MacBook (13-inch, Aluminum, Late 2008) Basics — General Information 18

 Apple Technician Guide

Troubleshooting

MacBook (13-inch, Aluminum, Late 2008)

General Troubleshooting

Update System Software

Important: Whenever possible before beginning troubleshooting, ensure the latest software

and rmware updates have been applied.

Troubleshooting Theory

For general information on troubleshooting theory, go to GSX and nd the Service Training course menu link. From there you can access the Troubleshooting Theory self-paced course.

Hardware vs. Software

For information on how to isolate a hardware issue from a software issue, refer to:

http://support.apple.com/kb/TS1388?viewlocale=en_US

TS1394—Mac OS X: Troubleshooting installation and software updates <http://support.apple.

com/kb/TS1394>

HT2956—Troubleshooting Mac OS X installation from CD or DVD <http://support.apple.com/

kb/HT2956>

For information on how to troubleshoot a software issue, refer to:

HT1199—Mac OS X: How to troubleshoot a software issue <http://support.apple.com/kb/

HT1199>

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MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Update System Software 20

Functional Overview

Fan:

• intermittent shutdown

• freezes

• noisy fan

Right speaker/subwoofer:

• no sound from right speaker or

subwoofer

• distorted sound from right or

center

Camera (includes AirPort,

Bluetooth, camera, and ambient

light sensor):

• failure of any parts listed above

• no keyboard backlight

• no startup if AirPort cable short

LCD, backlight:

• no video on internal

LCD

• no backlight

Battery (under logic

board):

• no power when

battery only

• no power on

Battery indicator LEDs,

battery button:

• no battery error

• no battery level while

charging

• no battery level shown

when button pressed

Keyboard

backlight:

• no keyboard

backlight

Keyboard, power

on button:

• no power

• nonresponsive

keys

Trackpad, trackpad button thermal

sensor:

• no cursor movement

• no click action

• runs slow (no sensor input)

Sleep LED, Infrared sensor,

magnetic sleep sensor:

• no sleep LED status

• no infrared reception

• no sleep when display closed

• wakes from sleep

• no video on internal display (sensor

stuck)

Hard drive:

• no hard drive visible

• no startup from hard drive

Optical drive:

• no optical drive visible

• no startup from optical drive

MagSafe connector

(under logic board):

• no power on

• no battery charge

Memory:

• no startup

• pointer unresponsive

and kernel panic

• video artifacts

• 1 startup tone

(no memory)

• 3 startup tones

(bad memory)

Connectors on the other

side of logic board:

Heatsink thermal sensor

•

no startup

•

system shutdown

Left speaker

•

no sound from left

•

distorted sound on left

Microphone

• no integrated sound input

Refer to this diagram for symptoms related to logic board connectors.

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MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Functional Overview 21

Block Diagram

Refer to this diagram to see how modules are interrelated.

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MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Block Diagram 22

Liquid Submersion Indicators

To help discover accidental damage to the computer, the top case includes spill sensors called liquid submersion indicators (LSI). The sensors are only visible when the bottom case and most of the modules have been removed. Normally represented by small white dots, the LSIs turn red (indicated by the four small, round dots shown below) when they have come in contact with liquid, such as an accidental spill.

For more information, refer to the Knowledge Base article HT3425: “About liquid submersion

indicators (LSI) on portable and desktop computers.”

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MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Liquid Submersion Indicators 23

Common Reset Procedures

When a reset procedure is required for troubleshooting, follow the applicable steps:

Resetting the System Management Controller (SMC)

To reset power management via the SMC chip:

1. If the computer is on, turn it o by choosing Shutdown from the Apple () menu.

2. Connect the power adapter to the computer and to a working power source.

3. Important: Use the keys on the left side of the keyboard. On the built-in keyboard, press

Shift-Control-Option along with the power button once.

Note: When the LED on the MagSafe connector is orange, resetting the SMC will change it to green for a few seconds, indicating that SMC was correctly reset.

4. Wait 5 seconds and press the power button to restart the computer. Note: If bottom case is removed, you may alternately reset the SMC by disconnecting the power adapter and the main battery, and holding the power button down for ve seconds.

For more information:

http://www.apple.com/support

HT1411—Apple Portables: Resetting the System Management Controller (SMC) <http://

support.apple.com/kb/HT1411>

Resetting the Parameter RAM (PRAM)

To reset PRAM,

1. If the computer is on, turn it o.

2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to

hold these keys down simultaneously in Step 4.

Note: If the keyboard does not have an Option key, use the Alt key instead.

3. Turn on the computer.

4. Press and hold the Command-Option-P-R keys.

Important: You must press this key combination before the gray screen appears.

5. Hold the keys down until the computer restarts and you hear the startup sound for the

second time.

6. Release the keys.

For more information:

2010-06-15

http://www.apple.com/support

HT1379—Apple Portables: Resetting the PRAM <http://support.apple.com/kb/HT1379>

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Common Reset Procedures 24

Starting Up in Safe Mode

A Safe Boot is a special way to start Mac OS X when troubleshooting. To start up into Safe Mode (Safe Boot),

1. Make sure the computer is shut down.

2. Press the power button.

3. Immediately after you hear the startup tone, press and hold the Shift key.

Note: The Shift key should be held as soon as possible after the startup tone but not

before.

4. Release the Shift key when you see the screen with the gray Apple and progress indicator (looks like a spinning gear). During startup, ”Safe Boot” appears on the Mac OS X startup screen. To leave Safe Mode, restart the computer normally, without holding down any keys during startup.

For more information:

http://www.apple.com/support

HT1564—What is Safe Boot, Safe Mode? <http://support.apple.com/kb/HT1564>

TS1884—Safe Boot take longer than normal startup <http://support.apple.com/kb/

TS1884>

Apple Service Diagnostics

Run Apple Service Diagnostics to determine if any of the thermal sensors are malfunctioning. Replace any failing sensors. See chart below for correlation between error code and part.

Name Location

TC0D Logic board TC0P Logic board Th1H Logic board TN0D Logic board Th0H Heatsink Ts0P Trackpad ex cable TB0T Battery TB1T Battery TB2T Battery TB3T Battery

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Apple Service Diagnostics 25

Clamshell Service Diagnostic Read Me

Isolating video and wireless issues in portable computers can be time consuming and confusing. The Clamshell Service Diagnostic (CSD) is a new diagnostic tool that checks Apple’s latest portable computers for the presence of AirPort, Bluetooth, LCD and Ambient Light Sensor (ALS) to assist you in quickly making a failure determination.

Troubleshooting benets of using CSD include:

• Quick way (less than 1 minute) to determine whether clamshell-related modules (AirPort, Bluetooth, LCD and ALS) are electrically connected without taking apart the system.

• Results of CSD can help pinpoint if any clamshell cables may need to be reseated to logic board.

• Diagnostic results can help isolate a video or wireless issue to either the clamshell or the logic board, to avoid unnecessary replacements of these components.

CSD checks for the presence of the computer’s:

• AirPort

• Bluetooth

• LCD

• ALS

CSD does not check for the presence of the computer’s:

• iSight camera

• externally connected hardware components (such as USB or FireWire devices)

CSD does not check for issues with the OS X or other software-related problems such as application or extension conicts.

Display Issue: Pixel Anomalies

When displaying a single color over the screen area, the LCD panel might show one or more pixels that are not properly lit. To determine if the display has an acceptable number of pixel anomalies, follow the steps below:

1. Set the display image to one of the following colors: all-white, all-red, all-green, all-blue, or all-black display. Knowledge Base article 112125: Service Diagnostics Matrix has the LCD Tester Diagnostic Utility that will generate these patterns on the screen.

2. Using a jeweler’s loupe, pocket microscope, or other magnifying device, identify and count each pixel anomaly:

Bright subpixel anomaly = subpixel that is always on

Dark subpixel anomaly = subpixel that is always o

3. The number of acceptable pixel anomalies for this computer is:

Bright Up to 3 Dark Up to 5 Combination Up to 7

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MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Clamshell Service Diagnostic Read Me 26

4. If the number of subpixel anomalies exceeds the acceptable number shown above, replace the LCD panel display assembly. Numbers outside the acceptable range would be

Bright 4 or more Dark 6 or more Combination 8 or more

5. If the number of subpixel anomalies is acceptable, explain to the customer that the pixel anomalies are within specications, and no repair is necessary.

Important: Do not release the specications to customers. Instead, inform them that a certain number of subpixel anomalies are considered acceptable, and these factors apply to all manufacturers using LCD technology—not just Apple products.

When speaking with customers, please use the following explanation:

Active-matrix LCD technology uses rows and columns of addressable locations (pixels) that render text and images on screen. Each pixel location has three separate subpixels (red, green, and blue) that allow the image to be rendered in full color. Each subpixel has a corresponding transistor responsible for turning the subpixel on or o.

There are typically millions of these subpixels on an LCD display. For example, the LCD panel used in the Apple Cinema HD display is made up of 2.3 million pixels and 6.9 million red, green, and blue subpixels. Occasionally, a transistor does not work perfectly, which may result in the aected subpixel being turned on (bright) or turned o (dark). With the millions of subpixels on a display, it is quite possible to have a low number of faulty transistors on an LCD. Therefore, a certain number of subpixel anomalies are considered acceptable. Rejecting all but perfect LCD panels would signicantly increase the retail price for products using LCD displays. These factors apply to all manufacturers using LCD technology—not just Apple products.

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MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Display Issue: Pixel Anomalies 27

Symptom Charts

Follow the steps in the order indicated below. If an action resolves the issue, retest the system to verify.

Note: A compilation of Quick Check tables is available at http://service.info.apple.com/QRS/

en/quickreference.pdf

Startup and Power Issues

No Power

Unlikely cause: display assembly, speakers, optical drive, hard drive

Quick Check

Symptom Quick Check

No Power / Dead Unit

• No power

• No image

• No startup chime

• No fan or hard drive spin

• No reset sound from optical drive

• No sleep LED activity

• No light if Caps Lock pressed

• Non-operational

1. Verify AC power presence with MagSafe LED indicating on or charge state.

2. Verify battery status as being partly charged, charging with AC power.

3. If battery is not recognized, remove battery and try to run from AC only.

4. Reset SMC.

5. Verify with known-good battery.

Deep Dive

Check Result Action Code

1. Isolate peripherals as cause.

Disconnect all peripherals and external devices and verify unit starts.

Yes Suspect peripherals as cause.

Reconnect each one at a time, verifying unit operation as external device is reinstalled.

No Go to step 2

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MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 28

2. Reset SMC., and verify unit starts. (Alternative hardware SMC reset can be forced by shorting R5001 pads on logic board or removing all system power for 1 minute.) Can system start up after SMC reset?

Yes Corrupt SMC state preventing

power on. Issue resolved with SMC reset.

No Go to step 3

3. Will system power up with battery only? Check battery level LED indicator for status of battery charge or battery use error. Inspect battery connector for burn marks or damaged pins if substituting a known-good battery to verify starting on battery.

4. Customer battery may be run down, or not recognized. Verify customer battery in a known-good system is recognized and accepting a charge. Conrm customer battery is not consumed nor defective.

Yes System can start up from

known-good battery -customer battery possibly at fault or needs to be charged. Continue to verify customer battery then AC adapter use and battery charging. Go to step 4.

No System will not power using

known-good battery only. Go to step 5

Yes Battery is recognized,

charging and health is good. Return to test unit with customer battery and AC adapter power. Go to step 6.

No Replace customer battery

for not charging (P10) or not recognized (P11). Customer to purchase a replacement battery if consumed.

P11

P10

P11

2010-06-15

5. Inspect battery cable connection at logic board and reseat if necessary. Replace cable if found damage or burned. Can the system power on from a charged battery with battery cable inspections or replacement?

6. Inspect MagSafe power adapter. Verify AC adapter is correct wattage, compatible with product and works on known-good computer.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 29

Yes Battery power restored, return

to test unit with customer battery and AC adapter power. Go to step 6.

No Logic board is expected to

power on with battery only. Inspect and test power on key. Go to step 10.

Yes Power adapter is good, go to

step 7

No Release stuck pin or replace

adapter due to wire damage, not working or burned pins

P14

7. Inspect MagSafe port on

computer for physical damage, debris or metal fragments attracted to magnetic connector. Is MagSafe connector clean and free from defects?

Yes Go to step 8

No Clean port assembly. Replace

MagSafe board if necessary.

X03

8. Verify adapter status LED

turns on green then orange indicating power and battery charge in progress. A green LED can indicate a full battery, removal of battery or battery not recognized.

9. Verify power from adapter is present on logic board. Remove system battery, use AC power only. With DVM, verify voltage presence of Q7001, pin 5 is 16.7Vdc with AC adapter connected. Reseat or test known-good MagSafe cable to achieve power for logic board.

Yes System starts and has power.

MagSafe LED indicates power is owing to logic board. Verify customer battery will also charge. Review battery health to ensure customer satisfaction.

No AC power is down or battery

is not charging. Go to step 9

Yes Logic board has power

adapter energy to start system, 16.7V found on Q7001. MagSafe cable reseat or replacement resolved issue. If still no system power on indications, go to step 10

No No voltage measured on

Q7001, AC adapter power not going to logic board power supplies. Replace logic board.

P11

X03

M21

2010-06-15

10. Test and inspect Top Case Power Button. Stuck or open power on key or keyboard disconnect can disable the power on of system. If button does not work, locate R5015 pads on logic board just above trackpad connector, and short pads to power up logic board. If power on key is stuck, keyboard cable must be disconnected for R5015 to work. Does system power on? (Reconnect keyboard cable to conrm bad or intermittent connections.)

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 30

Yes Power on key works ne, issue

resolved.

Power on key works when keyboard cable is reseated.

Power on key appears to be stuck, had to remove keyboard cable for R5015 power on. Replace top case for stuck power on key

No No logic board power on

when shorting R5015 pads. Replace logic board.

K05

M01

Won’t Start Up

Unlikely cause: display assembly, speakers, fan, camera, microphone

Quick Check

Symptom Quick Check

Power but No start up

• No startup chime, some video activity, Apple logo, startup spin dial

• Startup chime with possible beep tones.

• Fan, hard drive spin or optical drive reset sound

• Sleep LED is on , blinking or went out

• Caps Lock LED toggles when pressed

1. Reset SMC.

2. Verify startup process passes initial memory

checks – no beep errors or ashing sleep LED indicators. Display activity is starting up.

3. Clear PRAM. Verify starts up from user drive.

4. Connect known-good external bootable device

and press Alt key during startup then select external startup device to bring up system for diagnostics.

5. Verify presence and status of user hard drive. Use Disk Utility to repair drive and le permissions.

6. Start up in Safe Mode by pressing power button and holding down Shift key when you hear startup tone.

Deep Dive

Check Result Action Code

2010-06-15

1. Reset SMC and Clear PRAM to set default startup device to internal hard disk drive (HDD).

2. Is system indicating a memory error with repeated sleep LED 1 or 3 ash sequence and beep tones if sound is enabled?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 31

Yes User hard drive bootable,

issue resolved default settings.

No Customer system not starting

up, go to step 2

Yes Troubleshoot memory issues,

go to step 3

No Continue with startup

sequence verication go to step 4

3. Reseat customer memory and/or swap in knowngood memory to isolate bad memory and replace defective parts.

Yes Customer memory defective

and replaced. Continue to verify startup process. Go to step 4

No Should known-good memory

fail in one or more slots, replace logic board.

X02

M07

4. Hold the Alt (Option) key

during startup and verify there is a bootable hard drive shown in Startup Manager. Choose customer hard drive. Does start up from this drive work?

5. Insert product OS install disc in optical drive. Install disc is bootable and should be present in Startup Manager. Can system start up from OS install disc?

6. Boot from a known-good bootable copy of product OS on a USB drive or network server to start up and verify internal mass storage devices are available using System Proler and Disk Utility.

Yes System starting up from

customer hard drive. Startup issue resolved

No Customer hard drive not

present or does not start up from this drive. Continue to nd bootable device. Go to step 5

Yes Starts up from optical drive -

customer hard drive not yet bootable, go to step 8

No Computer has no internal

bootable devices. Test external startup devices, go to step 6

Yes System started up from

external device and reports data regarding internal SATA devices. Go to step 7

No No startup devices available.

Replace logic board

M02

2010-06-15

7. Troubleshoot optical drive and optical drive cable with cable reseat and knowngood part substitutions. Is there a defective optical drive component to replace?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 32

Yes Cable reseat solved issue.

Continue to verify hard drive issues, go to step 8

Defective optical drive cable

X03

found and replaced. Continue to verify hard drive issues, go to step 8

Defective optical drive found

J03

and replaced. Continue to verify hard drive issues, go to step 8

No Replace logic board M19

8. Use Disk Utility loaded from OS install disc to verify if hard drive is available on device list. Is customer hard drive listed in Disk Utility?

Yes Customer hard drive available

for inspections and repair. Go to step 10.

No Hard drive not present,

troubleshoot hard drive and cable. Go to step 9.

9. Troubleshoot hard drive and hard drive SATA cable with cable reseat and known-good part substitutions. If customer hard drive, is there a defective hard drive component to replace?

10. Boot system with Shift key down. Does it work?

11. Use Disk Utility to repair customer hard drive and repair permissions if system OS found on hard drive. Is hard drive bootable after software repairs?

Yes Reseat of SATA cable now has

customer hard drive visible in Disk Utility, go to step 10

Defective hard drive SATA cable found and replaced, now has customer hard drive visible in Disk Utility, go to step 10

Suspect customer hard drive defective, attempt OS restore, go to step 10

No Known-good hard drive and

known-good hard drive SATA cable used, still no hard drive present. Replace logic board

Yes Go to software

troubleshooting article

No Go to step 11

Yes OS on customer hard drive

repaired, issue resolved.

No Hard drive not bootable,

perhaps missing OS, go to step 12

X03

M19

2010-06-15

12. Use Disk Utility to partition customer hard drive with one GUID partition then restore Mac OS from product OS install disc. Is hard drive bootable after OS install?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 33

Yes Customer hard drive now

starts up from new OS image, issue resolved

No Replace hard drive. H02

Intermittent Shutdown

Unlikely cause: hard drive, optical drive

Troubleshooting Shutdown Issues

Before troubleshooting shutdown issues, always do the following:

• Run the available Apple diagnostics to check for cause of previous shutdown(s). Running ASD also helps isolate any abnormal value reading from a thermal, voltage, or current sensor or from a fan speed meter.

• Collect all available information from the user on shutdown details: periodicity, power state when issue happens, running applications, running time before shutdown.

User-related shutdowns

A computer shutdown may be caused by user operation. Shutting down the computer (by selecting the Shut Down menu, by pressing the power button for at least 4 seconds, or by programming a timed shutdown in the Energy Saver preferences) should not be considered as a failure unless the power button or the magnetic sleep sensors are found to be defective.

Suggested steps for troubleshooting:

• Reset SMC.

• Check Energy Saver preferences settings.

• Test top case button and magnetic sleep sensor operation and secure connection to logic board.

Activity-related system shutdowns

These shutdowns are linked to system settings, devices drivers, applications, or operating system freezes.

• System could not nish the standard shutdown process and had to force shutdown.

• An installed watchdog detected that an application did not respond within the specied time. (This watchdog can be enabled in Mac OS X Server Energy Saver preferences.)

Suggested steps for troubleshooting:

• Check the system logs and activity monitor utility for clues on the freezing process.

• Check for available software and rmware updates for installed device drivers, applications, or operating system.

• Start the system from a known-good and up-to-date bootable drive for issue reproduction.

Power-related system shutdowns

These shutdowns are due to power management, poor connections or defective power sources.

• External or battery power source was removed.

• Battery went empty while computer was on.

• Battery went empty while computer was asleep.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 34

Suggested steps for troubleshooting:

• Reset SMC.

• Check that AC cable, AC adapter and battery connections are secure to logic board.

• Verify battery and power adapter sources using the Battery and Adapter test utility.

Hardware-related system shutdown

These shutdowns are due to temperature, voltage, current, fan speed or other hardware-related sensor values going out of range.

• One of the temperature sensors reached a specied temperature limit.

• One of the voltage sensors reached a specied voltage limit.

• One of the current sensors reached a specied current limit.

Suggested steps for troubleshooting:

• Check all sensors connections and values using Apple Service Diagnostics and other available Apple Service utilities.

• Conrm correct Apple-branded battery and power adapter are installed.

• Check for abnormal battery temperature.

• Check fan(s) operation.

• Conrm cleanliness of heatsink ns and air ows.

• Conrm heatsink is correctly seated on logic board and thermal material is present.

Quick Check

Symptom Quick Check

Intermittent shutdown

• Powers o during startup

• Powers o with desktop use

1. Collect details from customer on shutdown occurrence and system conguration when it happens (on battery, when running for a while, frequency of shutdowns, running applications, shutdown repeatability). If shutdown can be easily reproduced, check next steps:

2. Verify battery charge status

3. Check AC adapter MagSafe connector and

connection with system

4. Reset SMC and PRAM

5. Start up with shift key down for safe mode

6. Startup from known-good bootable device

7. Run ASD for sensors + thermal tests

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 35

Deep Dive

Check Result Action Code

1. Activity related shutdowns:

Reset SMC and PRAM and verify that shutdown issue still happens.

2. Booting from known-good bootable drive , verify that shutdown issue still happens.

3. Power related shutdowns : verify that shutdown issue can ONLY be reproduced with user’s battery and AC adapter.

Yes Check with known-good

bootable drive: go to step 2

No Shutdown cause was related

to SMC or Pram programmed shutdown settings or corruption, and was resolved by reverting them to default settings.

Yes Go to Power related

shutdowns on step 3

No Shutdown events do not

happen on known-good OS. Reinstall Mac OS on customer hard drive, update OS with latest version and check if any rmware update is available.

Yes Intermittent power issue

means checking user’s AC cable for intermittent connection, checking user’s battery and AC adapter health,

2010-06-15

4. Reset SMC and PRAM, then verify if shutdown symptoms does not happen anymore.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 36

No Issue also happens with

known-good battery and AC adapter. Go to step 4

Yes Shutdown cause was related

to SMC or Pram settings or corruption, and was resolved by reverting them to default settings.

No Shutdown event still occurs.

Go to step 5.

5. Check system running on battery only. Use known-good charged battery. Verify if shutdown/reset/sleep issues disappear when knowngood battery is used without AC adapter.

Yes Recharge customer battery

and retest. Check for customer battery health in Apple System Proler or run Battery & Adapter Test utility, and replace battery if its health is reported bad or consumed.

No Symptoms unchanged - Go

to step 6

P09

6. Check with known-good AC

adapter source only Remove battery and use known-good AC adapter. Verify if the shutdown/reset/ sleep issues disappear with known-good adapter.

7. Hardware-related shutdowns: Run ASD or other latest available service utility and verify if a sensor failure is reported.

Yes Faulty user’s AC adapter.

Replace user’s AC adapter if AC cable and duckhead were conrmed good.

No Symptoms unchanged - Go to

Hardware-related shutdowns on step 7

Yes -If a temperature or a fan

sensor failure is reported, go to step 8

-If a voltage or a current sensor failure is reported in ASD w/known good AC adapter and batteries, replace logic board.

No Setup ASD to loop test suite

for burn in tests and go to step 7. if no failure is found after burn in tests, return unit to customer for no failure found.

P14

M23

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 37

8. Verify if a thermal sensor or fan failure is reported in ASD or other available service utility.

Yes -If fan not running failure,

check for fan cable seating and retest. If same failure after retest replace fan with known-good fan and retest. If issue does not happen with known-good fan, replace user’s fan.

-If an over temp failure reported, check for cause of over temp, like obstructed vent, dust in heatsink n, clogged fan and retest. If still failing replace part where sensor is located (logic board, battery, or trackpad) according to the sensor location table . Go to step 9

X22

M23

P17 K99

No Replace Thermal module

Go to step 9

9. Isolate if issue solved Verify if shutdown/issue does not happen anymore after part exchange.

Yes Issue xed

No Replace logic board with

corresponding symptom:

-if for thermal error cause

-if for other cause

No Video/Bad Video

Unlikely cause: hard drive, optical drive, top case, battery, power adapter

Quick Check

Symptom Quick Check

Power, but No Video

• Power

• No video

• fan, hard drive spin, or optical drive reset sound

• sleep LED is on or went on

• light if Caps Lock pressed

1. Reset SMC.

2. Reset PRAM.

3. If no startup chime, verify with known-good

memory.

4. Verify with external monitor.

5. Press Alt key on startup..

X10

M18 M08

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 38

Deep Dive

Check Result Action Code

1. Characterize video issue

Dene whether the issue is a bad image with backlight OR no video issue. Verify whether some image even distorted is visible.

2. Isolate Peripherals as cause Disconnect all peripherals, external devices, and display adapters if present and verify that video is displayed.

3. Adjust Brightness Power-on unit , attempt to adjust brightness to maximum using brightness (F1/F2) keys and verify that video is displayed.

Yes Bad image quality, go to step

No No image seen or image

visible with no backlight, go to Step 2

Yes Suspect peripherals as cause.

Reconnect one at a time, verifying unit operation at each stage

No Go to Step 3

Yes Video displayed - Brightness

set to minimum, panel backlight was inadvertently turned o. If backlight returns to low check for stuck F1 key on keyboard.

No Go to Step 4

4. Reset SMC Reset SMC and verify that system video is displayed.

5. Reset PRAM. If no action, use external keyboard with same sequence. Verify that system video is displayed.

Yes Corrupt SMC State preventing

video.

No Go to Step 5

Yes Invalid or Corrupt PRAM

contents aecting video output

No Go to step 6

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 39

6. Connect External video Connect known-good VGA/ DVI adapter to known-good display, press power button and close display to force main screen startup on external video. Verify that video is correct when displayed from external display.

Yes Video correct on external

display. Research available rmware and software updates, retest.

If returning with software already updated, go to Step 7

No Replace logic board with

according symptom code:

-no video

-bad/distorted video

M03 M04

7. Isolate LCD display detection

Disconnect external monitor and reopen display and restart unit. Verify that sleep LED indicator goes o after internal LCD has been detected.

8. Check for sleep sensor condition If display assembly sleep sensor is stuck in a closed state, video will appear on internal display temporarily, until the OS sleeps the system. Disconnect IR/sleep cable and restart unit without external display. Verify that system starts up with video on internal display stays on and does not go into sleep mode.

Yes Sleep LED goes o when LCD

detected.

-If still no video then Go to step 8,

-If video present, but with defect, go to step 9

No Internal LCD not detected.

Run Clamshell Service Diagnostic utility and check for LCD panel presence. If not found, reseat LVDS cable connection on logic board and retest. If sleep led does not go o after cable is reseated, go to step 10

Yes Sleep sensor was stuck or had

shorted cable. Replace IR/ sleep cable (or enclosing top case)

No Symptoms unchanged - Go

to Step 9

X13

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 40

9. Check for No Backlight Condition. Power on unit. Using a lamp or bright light source, inspect for faint image, and verify that any faint image appears.

Yes Logo image visible - check

LVDS cable on logic board. Inspect cable for damage near clutches: . if damaged, replace display assembly and go to step 11 . if cable is not damaged, run Clamshell Service Diagnostic utility and check for LCD panel presence. If not found, reseat it and retest, then go to step 11

No If symptom continues, go to

step 10.

L09

10. Verify with known-good

display assembly Connect known-good display assembly to system.

11. Verify with reseated LVDS cable or replaced display assembly Verify that unit now has video and backlight.

Yes System is functioning with

known-good display assembly Replace display assembly if following symptom reporting:

- had no power issue

- had incorrect/missing colors

- had blank video

- had distorted / blurred video

- had vertical/horizontal lines

- had noise/unstable ickering

- had dim backlight

- had bad spot(s)/pixels

- had no backlight

- could not change resolution

No Symptoms unchanged -

replace logic board

Yes Issue was only due to

damaged display assembly or unseated cable.

No Display cable damaged the

logic board. Replace logic board.

L01 L02 L03 L04 L05 L06 L07 L08 L09

L10

M03

M25

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 41

Battery Isn’t Recognized or Won’t Charge

Unlikely cause: display assembly, speakers, optical drive, hard drive, trackpad

Quick Check

Symptom Quick Check

Battery isn’t recognized or won’t charge

• AC adapter

• No MagSafe LED indicator

• No orange charge indication

• Battery status LEDs:

- single chase

- all ash

- no LED

1. Check battery level and test AC power.

2. Test system with known-good battery.

3. Test customer’s battery in known-good system.

Deep Dive

Check Result Action Code

1. Does the MagSafe LED

go green to amber when connected to the system?

Yes Battery is recognized and

charging. Go to step 6

No LED is green, Battery may be

full or not recognized. Go to step 2

LED was on momentarily then went out. Go to No Power for system (M01)

2010-06-15

2. When the Battery status button is pressed, did any of the lights come on?

3. Does battery status indicate a fully charge battery with all LEDs on?

4. Does battery status indicate the battery is not recognized with a single LED on that chases back and forth 5 times?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 42

Yes Go to step 3

No Go to step 11

Yes Customer battery charged,

check health. Go to step 13.

No Go to step 4

Yes Go to step 8 and tag battery

as a possible P11 candidate.

No Go to step 5

(P11)

5. Does battery status indicate

the battery is recognized but not charging with all LEDs blinking?

Yes Go to step 8 and tag battery

as a possible P10 candidate

No Go to step 6

(P10)

6. Does battery status indicate

battery charge and ash the next level 5 times?

7. Does battery status indicate a low battery with a LED ashing rapidly indicating initial charging of battery?

8. Test with a known-good battery. Is battery recognized and charging?

9. Inspect customer battery contacts and battery cable connector for corrosion or obstructions.

Yes Customer battery charging,

check battery condition. Go to step 13

No Flashing rst LED only, go to

step 7

No battery status LEDs on, go to step 11

Yes Allow customer battery to

charge to 1 LED on before checking battery condition. Go to step 13.

No Go to step 8

Yes Replace customer battery

(P10 not charging or P11 not recognized)

No Go to step 9

Yes Clear obstructions and

replace the battery harness cable if corroded and recheck.

No Go to step 10

P10 or P11

X03

2010-06-15

10. Reseat battery harness at logic board connector, and retest. Is battery recognized and charging?

11. Battery status LEDs not working - inspect button stuck or cable disconnect at logic board and reset SMC.

12. Remove system battery and connect and test a knowngood battery status indicator assembly. Do LEDs indicate a battery not recognized chase pattern?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 43

Yes Issue resolved by cable reseat.

Check battery condition, go to step 13

No Replace logic board M20

Yes LED status now working. Go

to step 3.

No Go to step 12.

Yes Replace customer battery

X03

LED indicator assembly. Go to step 3

No Replace customer logic board. M20

13. Open Apple System Proler and click on the Power Tab on the left. Is the battery over 300

Yes Battery has been consumed,

and customer will need to purchase a replacement.

cycle counts?

No Go to step 14.

14. Is battery less than a year old? Yes Go to step 16

No Battery warranty expired, go

to step 15

15. Considering the age of the battery greater than one year old, is the health of the battery “Good” according to system proler?

16. For batteries still covered by warranty, is the health of the battery “Good?”

17. With battery charge greater than 20% does battery support system operation without AC connected?

18. Test with a known-good battery. Does known-good battery support battery only operation?

Yes Battery is in good health

and out of 1 year warranty coverage. Battery should continue to function until consumed.

No Battery is consumed after

warranty coverage. Customer to purchase a new battery.

Yes Battery functioning normal.

Go to step 17.

No Battery has premature

P08

capacity loss. Replace customer battery.

Yes Customer battery is good

No Go to step 18

Yes Replace customer battery for

P12

will not run system on battery alone

No Replace logic board M20

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 44

Kernel Panic/System Crashes

Unlikely cause: Battery, Power Adapter

Quick Check

Symptom Quick Check

Memory Issues/Kernel panic and freezes

• Display notice of system kernel panic during start up and desktop use.

• System freeze during use.

• System freeze upon wake from sleep.

1. Reset SMC and clear PRAM

2. Remove suspect external devices.

3. Verify user memory is Apple-approved memory,

and memory conguration matches memory installed.

4. Start up with shift key down for safe mode.

5. Startup from known-good bootable device

6. Check panic.log info for crash cause

7. Run AHT for sensors test

Deep Dive

Check Result Action Code

1. Isolate Peripherals as cause.

Disconnect all peripherals, external devices, and display adapters if present

Yes Suspect peripherals as cause.

Reconnect one at a time, verifying unit operation at each stage

2010-06-15

2. Reset SMC and clear PRAM then verify that unit starts without panic issues.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 45

No Go to Step 2

Yes Issue resolved with default

startup settings.

No Go to step 3

3. Boot in Safe Mode with Shift key down, and check for recent kernel panic data in panic log.

Open Panic.log le on hard drive and check for aected interface that crashed. If unit still crashes during startup, you will need to take out disk to a good system to access the le. Verify that kernel panic dependency is not with an I/O interface.

Yes Kernel Panic is not a system

I/O related device. Go to step 5

No I/O device related crash, go to

step 4

4. Remove I/O device where possible to pinpoint faulty device:

- Disconnect camera cable from display assembly (for AirPort, Bluetooth, camera, and ambient light sensor). Camera cable can be disconnected without aecting startup and test.

- optical drive cable to isolate optical drive.

- hard drive cable to isolate hard drive.

Memory cards can be removed, relocated, or tested with known-good memory. Because system will run on one card, this is a useful test for nding bad memory or bad memory slot.

If issue remains after testing I/O device, replace with knowngood part(s) to conrm issue resolved.

Yes System starts up when I/O

device removed, replace aected I/O device or module containing it.

If AirPort card presence is crashing system, replace AirPort card. If still issue, replace display assembly (for Bluetooth, camera, or cable damage).

If optical drive presence is crashing system, replace optical drive cable and retest. If issue remains try with known-good optical drive. If still issue, replace optical drive.

If hard drive presence is crashing system, replace hard drive cable and retest. If issue remains, try with known-good hard drive. If still issue, replace hard drive.

Reseat memory or replace suspect memory with knowngood memory.

N13 L14

X03 J03

X03 H01

X01

2010-06-15

No Symptoms unchanged, go to

step 5

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 46

5. Start up from optical drive or known-good OS. Attempt to start up with original or product install disc, or from an external hard drive with product OS installed, and verify that system starts without kernal panic.

Yes Kernel panics cease running

alternate OS. Run ASD/ DiskUtility to repair and test hard drive. If repair attempts fail, repartition hard drive and reinstall OS. Replace hard drive if restore fails.

No Symptoms unchanged, go to

Step 6

H03

6. Disconnect display assembly

and test with known-good display assembly. Verify that system now starts up without kernel panic/freeze.

7. Check for thermal values and fan running speed Run ASD to check for fan and sensors test, and verify that ASD does not report any overtemp, failing sensor, or fan.

Yes Replace display assembly. L14

No Go to step 7

Yes No thermal fail detected -

Replace logic board with matching symptom:

- If hang or freeze

- If Kernel Panic/system

M05

M06

crashes

No If sensor test failed, reseat

sensor connections on logic board and retest. If still failing, replace sensor or part where it is located (top case, display, other) : If top case sensor failed If display sensor failed If logic board sensor failed If fan test failed, replace fan. If overtemp , replace heatsink.

X99 L14 M18 X03 X10

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 47

Battery Run Time Too Short

Quick Check

Symptom Quick Check

Battery Run Time Too Short

Battery runs out of power very quickly (less than two hours)

1. Check if the battery is covered under a repair extension program. Use the “Portable Computer Battery Screening Process for Apple Service Providers” (Knowledge Base CP165).

2. Verify no applications have runaway processes with the CPU. See “Runaway applications can shorten battery runtime” (Knowedge Base

TS1473).

3. Use “Apple Portables: Battery Life” (Knowledge

Base HT1466) to screen for short battery run

time. If replaced for run time too short, regardless of warranty coverage, use symptom code P09 if replaced.

Won’t Run on Power Adapter Alone

Unlikely cause: RAM, display assembly, hard drive, optical drive, top case, speakers, camera, microphone

Quick Check

2010-06-15

Symptom Quick Check

Won’t Run on Power Adapter Alone

Runs on battery but not on power adapter only.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 48

1. Verify proper wattage adapter is being used.

2. Check for dirty or stuck pins on the MagSafe

connectors, both on the adapter and the computer.

3. Connect the AC adapter to known-good power source.

4. Verify power cord or plug is properly attached to AC adapter and MagSafe cable is not damaged.

5. With the battery removed, unplug AC adapter, reset SMC by holding the power button for 5 seconds

Deep Dive

Check Result Action Code

1. With battery removed, will a

known-good AC adapter start up and run the system and show MagSafe LED status?

2. Does a known-good power adapter’s LED light up either green or amber?

3. Does the unit run on knowngood power adapter alone?

Power Adapter Issue

Yes Conrm user’s AC adapter as

bad and replace.

No Verify MagSafe board cable

seating to logic board. Go to step 2

Yes SMC on logic board senses AC

power adapter. Go to step 3

No Replace the MagSafe board.

Go to step 3.

Yes Issued resolved. X03

No Replace logic board.. M01

P14

Unlikely cause: logic board, RAM, display assembly, hard drive, optical drive, top case, speakers, camera, microphone

Quick Check

Symptom Quick Check

Power Adapter Issue

• No power

• No Power LED

• Non-operational

• Stuck /broken pin

1. Connect AC adapters MagSafe connector to the computer. The LED on the connector should be green or amber.

2. Verify power cord, or plug, is rmly attached to AC adapter.

3. Verify AC power source is supplying AC power.

4. Check for dirty or stuck pins on the MagSafe

connectors, both on the adapter and the computer. Use and cleaning of power adapter with MagSafe

5. Remove battery, unplug AC adapter, and reset SMC by holding the power button for 5 seconds.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 49

Deep Dive

Check Result Action Code

1. Verify that the MagSafe LED

is green or amber while connecting a known-good AC adapter on customer system.

2. Does the unit run on knowngood AC power adapter only?

3. Verify the MagSafe LED is green or amber while connecting known-good power adapter on customer system.

4. Does the customer’s power adapter have stuck or bent pins on the MagSafe connector?

Yes SMC on logic board senses AC

power adapter and enabled power. Go to step 4.

No Verify MagSafe interconnect

board is connected to logic board. Go to step 2

Yes Issued resolved. P99

No Replace the MagSafe

interconnect board. Go to step 3.

Yes Bad MagSafe interconnect

board. Issue resolved.

No Go to step 4

Yes Replace power adapter. P15

No Go to step 5

X03

5. Does the cable or duckhead

have visible damage?

6. Check that LED on MagSafe connector is displaying both green (if battery charged) and orange (when charging).

Yes Replace cable or duckhead. P16

No Go to step 6

Yes Verify adapter with known-

good unit and customer unit and troubleshoot source of error

No Replace power adapter. P03

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 50

Noise / Hum / Vibration

Unlikely cause: RAM, display assembly, top case, camera, microphone, battery

Quick Check

Symptom Quick Check

Noise / Hum / Vibration

Computer or AC adapter emits a noise or vibration.

1. Verify and reproduce the source of the noise from the computer / adapter with the customer.

2. If the AC adapter is the source of the noise disconnect and try a known-good adapter. ( a small amount of hum or vibration is normal with AC adapters ).

Deep Dive

Check Result Action Code

1. Use of a known-good AC

adapter eliminates the noise/ vibration.

2. Verify if the noise is heard through the speakers and / or headphones.

3. Disconnect any peripheral devices, cards, or cables attached to the unit. Verify the noise is gone.

Yes Replace AC adapter. P04

No Go to step 2

Yes Go to step 3

No Go to step 4

Yes Check for possible ground

loop.

No Go to step 6

2010-06-15

4. Locate the source of the noise. Is the noise from an optical drive?

5. Is the noise from the hard drive?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 51

Yes Check with a dierent media

disc. Possible issue with disc label or out of balance media. If not related to media, and noise is above normal level, replace optical drive.

No Go to step 5

Yes Drives normally make noise

when starting up or when the heads move. Replace drive if noise is above normal levels.

No Go to step 6

J04

H06

6. Is the noise coming from the

fan?

Yes The fan(s) are generally

running in a slow mode, but may accelerated when intensive processing is required (calculation, 3D gaming, or screen saver

X03

animation). If still beyond expected sound level, check for interference of fan with other mechanical element of system (foam, bracket, shield) before replacing a noisy fan.

No Go to step 7. P04

7. Noise may be related to EMI foam gasket shorting some pads on logic board or some pins from LVDS connector. Follow Take Apart instructions to remove EMI foam gasket from LVDS cable and retest. Verify if noise is gone when operating without foam gasket.

8. Noise may be related to interference from electrical devices operating near the computer, or on the same AC power source. Verify if noise is gone when operating in a dierent location on a dierent AC circuit.

Yes Issue solved. Replace EMI

foam gasket so that it covers connector frame and does not touch any part of logic board or connector pins.

No Go to step 8

Yes Perhaps operating the unit

with a surge suppressor will eliminate or reduce the noise. Change location of use or limit use of other device that is inducing the noise.

No Replace logic board. M99

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 52

Burnt Smell / Odor

Unlikely cause: Enclosure

Quick Check

Symptom Quick Check

Burnt Smell / Odor

Computer or power adapter emits an odor or smell of smoke.

1. Disconnect the battery and AC adapter from the computer.

2. Attempt to identify the source of the odor. Visual clues are component damaged like capacitor chip popped or burn marks.

3. Check AirPort Card cable orientation.

Deep Dive

Check Result Action Code

1. Has the source of the odor

been identied.

2. Are any burn marks visible on components?

3. Refer to Liquid Submersion Indicators. Are any of the spill sensors red?

Yes Replace the aected part. P08

No Go to step 2

Yes Replace the aected part. P08

No Go to step 3

Yes Refer to Knowledge Base

article TS2274 “MacBook (Early 2008) and later: Liquid submersion indicators (LSI).”

2010-06-15

Go to step 4

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 53

4. Is the computer operating normally?

Yes This could be related to

No Please refer to best related

Battery Leaking or Swollen

Quick Check

Symptom Quick Check

normal operation. Refer to

Knowledge Base: 24947 Odors may be present shortterm.

troubleshooting section. If after inspecting the unit you feel there is a possible safety issue with the computer or AC adapter, please notify Apple.

Battery Leaking or Swollen

• Computer wobbles

• Trackpad button does not work

• Battery pack case has opened.

• Access door will not close

1. Check if the battery is covered under a repair extension program. Reference: MacBook, MacBook Pro (15-inch) or MacBook Pro (17-inch) with swollen battery article (Knowledge Base

TS2358).

2. Use the “Portable Computer Battery Screening

Process for Apple Service Providers” (Knowledge

Base CP165) and use “Battery pack is visibly

deformed” case under section 2E. Use symptom code P13.

3. Check locking lever mechanism.

Uncategorized Symptom

Quick Check

Symptom Quick Check

Uncategorized Symptom

Unable to locate appropriate symptom code

Verify whether existing symptom code applies to the issue reported by the customer. If not, document reported symptom and send feedback to smfeedback@apple.com stating that a suitable symptom code could not be found.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 54

Communications

Ethernet Port/Device Issue

Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera, microphone, top case, display assembly, AirPort card

Quick Check

Symptom Quick Check

Ethernet Port/Device Issue

• No Ethernet device present

• Unable to access network resources

• Ethernet device shows no connection

• Ethernet device unable to get an IP address

• Slow network performance

1. Check the network cable for damage, try a known good Ethernet cable – CAT5 or better recommended for 100Mbps+ connections.

2. Check Ethernet ports on Mac and wall/switch for dust, debris, damage or bent pins.

3. Ensure distance from networking infrastructure is less than 300 feet / 105 meters.

4. Verify port, cable and network hardware with a known good system. Isolate rewall, MAC address ltering or hardware access control devices.

5. Check system logs. Isolate OS by starting up from original install media (10.5.x) or compatible known good OS.

Deep Dive

Check Result Action Code

1. Visually inspect Ethernet

connector to ensure all pins will make physical contact with CAT5 network cable.

Yes Ethernet interface contacts

are good. Go to step 2.

No Pins are damaged or bent at,

replace logic board.

M10

2010-06-15

2. Isolate OS by booting from original install media. Verify Network Link status active by using Network Utility on install DVD. If the Ethernet interface (en0) Link Status is inactive, recheck physical connect and link activity indicator on hub/ switch.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 55

Yes Ethernet interface (en0) Link

Status is active, go to step 3.

No If connection is OK on known-

good system, replace logic board.

M10

3. Verify if IP address is listed

for the Ethernet interface in System Preferences: Network. Connect computer to network with known-good DHCP IP allocation, ensuring static DHCP maps or ltering is not preventing address allocation. Note: DHCP allocation may not be instantaneous depending on network. Retest.

Yes Go to step 4.

No If connection is OK on known-

good system, replace logic board.

M10

4. Verify connection by using

Network Utility to ping another connected computer on the same subnet. Ensure the target computer’s IP address is valid, on the same subnet and powered on. Ensure no MAC address ltering or hardware access control devices are present. Use a simple hub/ switch environment.

5. Verify Ethernet performance and reliability by starting up from a known-good OS install, and downloading a large le from a web site or le server.

Yes Go to step 5

No If the symptoms do not

change, replace the logic board.

Yes If there is no performance or

connectivity issue isolated solely to the system under test, the problem may be the network environment. No repair is necessary.

No If there are connection

dropouts or poor performance not seen on a known-good test system, replace the logic board.

M10

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 56

AirPort/Bluetooth: Defective Wireless Devices

Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera, microphone, top case

Caution: When testing an AirPort card connection, wait at least 5 seconds after shutdown before touching the camera cable connection to the logic board. Waiting less than that could damage the AirPort card.

Quick Check

Symptom Quick Check

AirPort or Bluetooth: Defective Wireless Devices

• Unable to join networks or pair devices

• Card not available or recognized

• Intermittent device or connection dropouts

1. Open System Preferences and make sure AirPort or Bluetooth is turned on and (for AirPort) that a network is selected.

2. Check that base station is not using unsupported connection and encryption protocols.

3. Check for nearby interference sources such as microwave ovens or cordless phones (Knowledge

Base HT1365)

4. Check the number of users trying to use AirPort in

the area for possible network congestion.

5. Isolate OS by booting from original install media (10.5.x). Attempt to connect to base station (AirPort) or pair with wireless keyboard (Bluetooth).

6. Reset PRAM.

Deep Dive

Check Result Action Code

2010-06-15

1. Open System Proler, check to see if AirPort or Bluetooth is recognized. Ensure software and rmware updates for AirPort and Bluetooth have been applied.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 57

Yes (AirPort) Ensure MAC address

ltering is not enabled on the base station.

(Bluetooth) Ensure target devices are set to discoverable.

No If card is not detected or

software updates do not resolve issue, go to step 2.

2. Run Clamshell Service Diagnostic utility and check for all devices presence. If not found, reseat the camera cable connection to the logic board.

Yes Loose logic board connection. N04

No AirPort issue, go to step 3,

Bluetooth issue go to step 7.

3. (AirPort) Verify the antenna connections to the AirPort card are not reversed or loose. Reseat antenna and I/O cable connections.

4. (AirPort) Try a known-good AirPort antenna.

5. (AirPort) Try a known-good AirPort card.

6. (AirPort) Try a known-good display assembly if available.

7. (Bluetooth) Enable Bluetooth and try a known good display assembly if available. Bluetooth circuitry in the clamshell is not accessible.

Yes Loose connections or crossed

N04

antenna.

No If the connectors are secure,

antenna connections not reversed and show no signs of damage or wear, go to step

Yes Replace AirPort antenna. N14

No Continue to use known-good

antenna, go to step 5.

Yes Replace AirPort card. N12

No Go to step 6.

Yes Replace display assembly. L16

No Replace logic board. M11

Yes Replace display assembly. L16

No Replace logic board. M11

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 58

No/Poor Wireless Signal

Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera, microphone, top case

Quick Check

Symptom Quick Check

No/Poor Wireless Signal

• Unable to nd networks

• Intermittent connection dropouts

• Slow transfer speeds

1. Check for nearby interference sources in the

2.4/5GHz range such as microwave ovens and cordless phones (Knowledge Base HT1365).

2. Check that computer is within base station range – move closer to base station.

3. Base station checks: a. Base station is not set to low-power transmission mode b. Base station is not using unsupported connection and encryption protocols c. Check for possible Wi-Fi channel overlap (nearby base stations using adjacent channel)

4. Isolate OS by booting from original install media (10.5.x). Attempt to connect to base station.

Deep Dive

Check Result Action Code

1. Open System Proler, check to

see if AirPort card is recognized under Network: AirPort Card.

Yes Use Software Update to make

sure all AirPort software and rmware updates have been applied. Ensure base station is not using MAC address ltering or creating a hidden network.

2010-06-15

No If card is not detected, go

to M11 - AirPort/Bluetooth Defective wireless devices.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 59

2. Run Clamshell Service Diagnostic utility and check for all devices presence. If not found, reseat the camera cable connection to the logic board.

Yes Loose logic board connection N04

No Go to step 3.

3. Verify the antenna connections to the AirPort card are not reversed or loose. Reseat antenna and I/O cable connections.

4. Try a known-good AirPort antenna.

5. Try a known-good AirPort card. Yes Replace AirPort card. N12

6. Try a known-good display

assembly if available.

Yes Loose connections or crossed

antenna

No If the connectors are secure,

antenna connections not reversed and show no signs of damage or wear, go to step

Yes Replace AirPort antenna. N14

No Continue to use known good

antenna, go to step 5.

No Continue to use known-good

antenna & card; go to step 6.

Yes Replace display assembly. L16

No Replace logic board. M11

N04

2010-06-15

Wireless Input Device Loses Connection

Unlikely cause: display assembly, speaker assembly, optical drive, hard drive

Quick Check

Symptom Quick Check

Wireless Input Device Loses Connection

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 60

Check Bluetooth input device has fully charged batteries.

Deep Dive

Check Result Action Code

1. System Proler should list

Bluetooth radio device under system hardware. Is Bluetooth device available?

2. System Preferences has a Bluetooth panel. Ensure Bluetooth is on and discoverable. Are there any devices listed in pairing window?

3. Ensure a known-good Bluetooth device is on, in close range and in discoverable mode. Is computer pairing with known-good device?

4. Is computer pairing with user’s Bluetooth device?

Yes Bluetooth radio present, verify

Bluetooth preference settings, go to step 2.

No Attempt Bluetooth repair, go

to step 5.

Yes Choose known-good device

and establish a connection. Go to step 3.

No Attempt Bluetooth repair, go

to step 5.

Yes Pairing veried, connect with

user’s device, go to step 4

No Attempt Bluetooth repair, go

to step 5.

Yes Connection established,

continue testing for connection loss, go to step 7.

5. Run Clamshell Service Diagnostic utility and check for all devices presence. If not found, reseat camera cable on logic board. Is the Bluetooth radio present, on and pairing with a known-good device?

6. Install and test a known-good display assembly. Is the Bluetooth radio present, on and pairing with a knowngood device?

No Check for software updates

for both computer & device.

Yes Loose cable connection. N04

No Go to step 6.

Yes Replace display assembly. L16

No Replace logic board. M11

K07

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 61

7. Continue to actively test a known-good Bluetooth device to determine if there is a disconnect. Do not allow computer to sleep during this test. Is link lost during test?

Yes Check for software update,

2.4 GHz radio interference or device low battery.

No Known-good device passed,

test with user’s Bluetooth device.

8. Continue to test user’s Bluetooth device to determine if there is a disconnect. Do not allow computer to sleep during this test. Is link lost during test? If link is lost during start up, turn on System Preferences: Bluetooth: Advanced: “Open Bluetooth Setup Assistant at start up when no input device is present”.

Yes Check for software update, 2.4

GHz radio interference, device low battery or user’s device features list for explanation.

No User’s device not losing

connection. Issue not repeatable or resolved.

AirPort Card: Kernel Panic

Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera, microphone, top case

2010-06-15

Quick Check

Symptom Quick Check

AirPort Card: Kernel Panic

• Kernel panic on boot

• Kernel panic or freezing while attempting to connect to Wi-Fi networks

• Kernel panic while transferring data on Wi-Fi networks.

1. Isolate OS by booting from original install media (10.5.x). Attempt to connect to Wi-Fi network.

2. Use Software Update to make sure all AirPort software and rmware updates have been applied.

Deep Dive

Check Result Action Code

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 62

1. Use Software Update to make sure all AirPort/Bluetooth software and rmware updates have been applied. Ensure MAC address ltering is not enabled on the base station. Is kernel panic resolved?

Yes Software issue.

No Go to step 2.

2. Reseat the camera cable connection to the logic board. Is kernel panic resolved?

3. Isolate AirPort card by removing the I/O connection from the AirPort card. Reconnect camera cable connection to logic board. Is kernel panic resolved?

4. Connect and test with a known-good AirPort card. Is kernel panic resolved?

Yes Go to step 4.

No Go to step 3.

Yes Go to step 4.

No Go to M06 Kernel Panic /

System Crashes.

Yes Replace AirPort card. N13

No Replace display assembly. L16

Wireless Performance Issue / Slow Connection

Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, camera, microphone, top case

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 63

Quick Check

Symptom Quick Check

Wireless Performance Issue / Slow Connection

• Slow or stalled data transfers

• Intermittent connection dropouts

1. Check for nearby interference sources in the

2.4/5GHz range such as microwave ovens or cordless phones (Knowledge Base HT1365)

2. (AirPort) Check the number of users trying to use AirPort in the area for possible network congestion. Move closer to base station to improve signal reception.

3. (Bluetooth) Move devices closer together.

4. Check performance with a known-good system

5. (AirPort) Wireless base station checks:

a. Base station is not set to low-power transmission mode. b. Base station is not set to a slower protocol mode (802.11b). c. Check for possible Wi-Fi channel overlap (nearby base stations using adjacent channel).

6. Isolate OS by booting from original install media (10.5.x). Attempt to connect to base station (AirPort) or pair with wireless keyboard (Bluetooth)

7. Use Software Update to make sure all AirPort and Bluetooth software and rmware updates have been applied.

2010-06-15

Deep Dive

Check Result Action Code

1. Inspect the display clutch

barrel for damage. AirPort radio is in display clutch barrel area.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 64

Yes Record damage: Proceed

to possibly repair damaged parts, go to step 2

No No visible damage, go to step

2. Turn o Bluetooth. Retest AirPort performance. Bluetooth circuitry in the clamshell is not accessible. Refer to Knowledge Base

TS1809.

Yes Possible AirPort interference

from the Bluetooth card. Change AirPort base station channel. (Knowledge Base

TS1809.)

N06

3. Run Clamshell Service

Diagnostic utility and check for all devices presence. If not found, reseat the camera cable connection to the logic board.

4. (AirPort) Verify the antenna connections to the AirPort card are not reversed or loose. Reseat antenna and I/O cable connections.

5. (AirPort) Try a known-good AirPort antenna and verify that issue is xed..

6. (AirPort) Try a known-good AirPort card and verify that issue is xed..

No Continue by checking

connections, go to step 3

Yes Loose logic board connection N04

No AirPort issue, go to step 4,

Bluetooth issue, go to step 8.

Yes Loose connection or crossed

N04

antenna

No If the connectors are secure,

antenna connections not reversed and show no signs of damage or wear, go to step 5

Yes Replace AirPort antenna. N14

No Continue to use known good

antenna, go to step 6.

Yes Replace AirPort card. N12

No Continue to use known-good

antenna & card, go to step 7.

2010-06-15

7. (AirPort) Try a known-good display assembly if available and verify that issue is xed..

8. (Bluetooth) Enable Bluetooth and try a known-good display assembly if available and verify that issue is xed..

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 65

Yes Replace display assembly. L16

No Replace logic board. M11

Yes Replace display assembly. L16

No Replace logic board. M11

Wireless Input Device Doesn’t Pair

Unlikely cause: display assembly, logic board, optical drive, hard drive

Quick Check

Symptom Quick Check

Wireless Input Device Doesn’t Pair

• Can’t get the system to recognize the Bluetooth keyboard or mouse

1. Check Bluetooth System Preference is set to Discoverable.

2. Check Bluetooth device has fully charged batteries.

3. Check for Bluetooth software updates for both the device and Mac OS X.

4. If the Bluetooth pairs with no problems, probe about potential interference issue at user’s site.

Deep Dive

Check Result Action Code

1. System Proler should list

Bluetooth radio device under system hardware. Is Bluetooth device available?

Yes Bluetooth radio present, verify

Bluetooth preference settings, go to step 2.

No Attempt Bluetooth repair, go

to step 5.

2010-06-15

2. System Preferences has a Bluetooth panel. Ensure Bluetooth is on and discoverable. Are there any devices listed in pairing window?

3. Ensure a known-good Bluetooth device is on, in close range and discoverable mode, Is system pairing with knowngood device?

4. Is Bluetooth pairing with user’s Bluetooth device?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 66

Yes Choose known-good device

and establish a connection. Go to step 3.

No Attempt Bluetooth repair, go

to step 5.

Yes Pairing veried, connect with

user’s device, go to step 4.

No Attempt Bluetooth repair, go

to step 5.

Yes Issue resolved.

No Check for SW update for both

System and user device.

5. Run Clamshell Service Diagnostic utility and check for all devices presence. If not found, reseat camera cable with logic board. Is the Bluetooth radio present, on and pairing with a knowngood device?

Yes Bad logic board connection.

Issue resolved.

No Go to step 6.

6. Install and test a known good clamshell. Is the Bluetooth radio present, on and pairing with a known-good device?

7. With the logic board replacement, is the Bluetooth now pairing?

Yes Replace display clamshell. L16

No Replace logic board. Optional

Yes Bad logic board. Issue

No All parts replaced. Try

Uncategorized Symptom

Quick Check

Symptom Quick Check

Uncategorized Symptom

Unable to locate appropriate symptom code

Verify whether existing symptom code applies to the issue reported by the user. If not, document reported symptom and send feedback to smfeedback@apple.

com stating that a suitable symptom code could not

be found.

M11

step 7.

M11

resolved.

minimum conguration troubleshooting.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 67

Display

Display Anomalies

Quick Check

Symptom Quick Check

Display Anomalies

• Incorrect/missing colors

• Distorted/blurred image

• Pixel anomalies

• Vertical/horizontal lines

• Non-uniform brightness

• Image icker

• Image persistence

1. Allow display to reach normal operating temperature for about 15 minutes before evaluating front-of-screen performance.

2. Check display preferences for use of custom display prole.

3. Check brightness setting.

4. Check for Software Updates.

5. Clean glass panel while checking for dust/debris.

6. Go to Deep Dive: General

Deep Dive: General

Check Result Action Code

1. Verify if user’s issue is incorrect/

missing colors.

2. Verify if user’s issue is distorted/ blurred image.

Yes Go to Incorrect/Missing

Colors Deep Dive.

No Go to step 2.

Yes Go to Distorted/Blurred

Image Deep Dive.

2010-06-15

3. Verify if user’s issue is bright or dark pixel anomalies.

4. Verify if user’s issue is vertical or horizontal lines.

5. Verify if user’s issue is nonuniform brightness.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 68

No Go to step 3.

Yes Go to Pixel Anomalies Deep

Dive.

No Go to step 4.

Yes Go to Vertical/Horizontal

Lines Deep Dive.

No Go to step 5.

Yes Go to Non-uniform

Brightness Deep Dive.

No LCD functioning OK.

Deep Dive: Incorrect/Missing Colors

Check Result Action Code

1. Verify display is listed in the

System Proler’s Graphics/ Displays device tree.

2. Verify System Preferences Display Prole is valid for display being tested. Color prole should be set to Color LCD, user may have created an o-color calibration setting.

3. Verify that the glass panel is free of contaminants.

4. Run Clamshell Service Diagnostic utility and check for LCD panel presence. If not found, reseat and verify LVDS cable is secure to the logic board. Are colors restored?

Yes This ensures color prole can

be matched with LCD. Go to step 2.

No Go to N09.

Yes If display prole is valid and

the colors are still incorrect or missing go to step 3.

No Set System Preferences:

Displays: Color to Color LCD and retest.

Yes Go to step 4.

No Clean glass panel using

approved method. Retest.

Yes Loose cable connection. Issue

resolved.

No Go to step 5.

5. Set desktop pattern in System Preferences to ‘Solid Gray Light’. Verify if incorrect/missing color issue aects entire display.

6. Set up display under test side by side with another known good display showing the same image. Verify if issue is noticeably worse on the display being tested.

7. Substitute a known-good display assembly to test logic board video output. Is normal video restored?

Yes Test a known-good display, go

to step 7.

No Go to step 6.

Yes Test a known-good display, go

to step 7

No Small variations in color

uniformity are normal and do not warrant replacement or repair of the display.

Yes Replace display assembly. L02

No Replace logic board. M04

L02

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 69

Deep Dive: Distorted/Blurred Image

Check Result Action Code

1. Sample image illustrates loss of

LVDS data signals to LCD or a defective LCD panel. Inspect & reseat LVDS cable connection looking for damaged or bent pins. Is image restored with reseated cable connection?

2. Substitute a known good display clamshell to test logic board video output. Is normal video restored?

Yes Issue due to loose connection.

Display issue resolved.

No Go to step 2.

If logic board connector damage, replace logic board.

Yes Replace display assembly. L04

No Replace logic board. M04

Deep Dive: Pixel Anomalies

Check Result Action Code

1. Determine if “defects” are dust/

debris on surface of glass panel.

2. Determine if bright pixel defects exceed the acceptable number. See

Display Issue: Pixel Anomalies.

Yes Clean glass panel.

No Go to step 2.

Yes Replace display assembly. L08

No LCD meets bright pixel defect

specications. Go to step 3.

M24

2010-06-15

3. Determine if dark pixel defects exceed the acceptable number.

See

Display Issue: Pixel Anomalies.

4. Determine if the combination

of bright/dark pixel defects exceed the acceptable number.

See

Display Issue: Pixel Anomalies.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 70

Yes Replace display assembly. L08

No LCD meets dark pixel defect

specications. Go to step 4.

Yes Replace display assembly. L08

No Explain to user that LCD is

within specications. Do not replace display assembly.

Deep Dive: Vertical/Horizontal Lines

Check Result Action Code

1. Horizontal lines may be related

to a failing RAM module. Verify if video issue only happens AFTER the Apple logo and the spinning wheel has appeared.

2. Start with shift key down (safe mode) to disable system extensions. Verify if issue still happens when booting in safe mode.

3. Isolate with only one memory module installed , then with the other one. Test with known-good memory. Verify that issue only happens with specic RAM module(s).

4. Isolate with one known-good memory module installed in one of the memory slots. Repeat by testing in the other memory slot with knowngood memory module. Verify that issue only happens with specic memory slot on logic board.

Yes Issue only happens AFTER

Apple logo and spinning wheel appears. Go to step 2.

No Issues happens since startup.

Go to step 5.

Yes Go to step 5.

No No video issue when booting

in safe mode. Go to step 3.

Yes Replace aected RAM

module.

No Go to step 4

Yes Replace logic board. M07

No Go to step 5

X02

2010-06-15

5. Run Clamshell Service Diagnostic utility and check for LCD panel presence. If not found, reseat the LVDS cable to the logic board internal video output. Is normal video restored?

6. Connect external compatible DisplayPort display (or DisplayPort adapter and display). Verify if correct video appears on external display.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 71

Yes Issue resolved by reseating

loose LVDS cable..

No Go to step 6

Yes Go to step 7.

No Replace logic board M04

7. Substitute a known-good display assembly module to test logic board LVDS video output. Is normal video restored?

Yes Replace display assembly

module.

No Replace logic board. M04

Deep Dive: Non-uniform Brightness

Check Result Action Code

L05

1. Determine if brightness

uniformity issue is visible after display has warmed up for 15 minutes.

2. Check LVDS cable connection to logic board.

3. Determine if variation in uniformity appears excessive when compared to another similar unit.

Yes Go to step 2.

No Display backlight can take

several minutes to stabilize.

Yes Reseat LVDS cable

No Got to step 3

Yes Replace display assembly. L07

No Explain to user that

LCD appears to meet specications.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 72

Defective Camera / Built-in iSight Not Operating Correctly

Quick Check

Symptom Quick Check

Defective Camera

• Camera not detected

• No green LED for camera

• Excessive blooming

• Poor white balance

• Poor focus

• Green image

• Image distortion

1. Check for Software Updates.

2. Verify camera lens and glass panel are clear of

contaminants.

3. Ask customer about their lighting. Foggy image can be due to o-axis lighting. Low lighting results in poor image quality.

4. Moire patterns in image can be caused by stripes or mesh texture in subject.

Deep Dive

Check Result Action Code

1. Launch System Proler and

conrm that “Built-in iSight” is listed under USB High-Speed Bus.

2. Run Clamshell Service Diagnostic utility and check for all devices presence. If not found, inspect and reseat camera cable on logic board. Is iSight listed in System Proler?

Yes Camera recognized. Go to

step 3

No Go to step 2.

Yes Camera recognized. Go to

step 3.

No Go to step 4.

2010-06-15

3. Launch PhotoBooth. Verify that camera’s green LED is on and image appears normal.

4. Substitute a known-good display assembly to test logic board camera connection. Is iSight camera operating properly?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 73

Yes Issue resolved..

No Go to step 4.

Yes Replace display assembly. X11

No Replace logic board. M13

Blank / No Video

Unlikely cause: power adapter, speakers, optical drive, hard drive, fan, microphone, top case,

Quick Check

Symptom Quick Check

Blank / No Video

• No video

• No backlight

1. Check brightness setting

2. Attach known-good supported external display.

3. Boot from Mac OS X install DVD that came with

computer.

Deep Dive

Check Result Action Code

1. Verify boot chime present

when system restarted. Reset SMC and clear PRAM if necessary for proper start up. Is LCD video present?

2. Connect known-good supported external display. Verify whether image appears on external display when system is booted.

3. Verify if LCD backlight is on by looking for faint glow from display when viewed in darkened room with brightness adjusted to full.

Yes Go to step 3.

No Go to step 2.

Yes External display detected by

system. Go to step 3.

No Go to No Video symptom

code ow.

Yes Video signal from system

to external video is OK, LCD backlight is on. Go to step 5.

No Go to step 4.

2010-06-15

4. Shine bright (low heat) ashlight into the front of LCD. Verify if Apple logo on the back of display glows.

5. Run Clamshell Service Diagnostic utility and check for LCD panel presence. If not found, reseat and verify that the display connection to the logic board is secure. Verify if image is restored after reseating loose connector.

Yes Image present but backlight

is not on. Check logic board connections. Go to step 5.

No Go to No Video symptom

code ow.

Yes Issue resolved.

No Continue to test with known-

good display assembly. Go to step 6.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 74

6. Verify LCD video works with a known-good display assembly.

Yes Replace display assembly. L03

No Go to No Video symptom

code ow.

Backlight Issue / No Backlight

Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, microphone, top case,

Quick Check

Symptom Quick Check

Backlight Issue / No Backlight

• Display not illuminated

• Flashing, unstable, or nonuniform backlight

• Poor backlight at some or all settings

Check that brightness setting is above minimum.

Deep Dive

Check Result Action Code

1. Connect external display, clear

PRAM to set brightness to default level and verify if Color LCD is listed in the System Proler’s Graphics/Displays device tree.

2. Unplug and reseat the LVDS cable at the logic board. Repeat verication in System Proler.

Yes Display panel detected by

system. Go to step 3.

No Go to step 2.

Yes Display panel detected by

system. Go to step 3.

No Go to step 4.

2010-06-15

3. Darken room and verify backlight by detecting if any glow is emitted from the Apple logo on the back of display

Yes Backlight operating. Go to

step 5.

No Go to step 4.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 75

4. Swap memory with knowngood memory to determine if video issue is ram related..

Yes Reseat or replace defective

memory

No Go to step 5

X01

5. Inspect LVDS connectors and

cable under magnication for pinched cables and damaged or bent pins. Do any of the connections appear to be defective?

6. Substitute a known-good display clamshell to test logic board video output. Is backlight and display text back to normal?

Yes Defective LVDS cable. Replace

display assembly.

Defective LVDS connector on logic board. Replace logic board.

No If connections are OK and

secure and the display is still blank, go to step 6.

Yes Replace display assembly. L09

No Poor or no backlight LED

Driver power at logic board. Replace logic board.

M25

Noise / Unstable Flickering

Unlikely cause: power adapter, battery, speakers, optical drive, hard drive, fan, microphone, top case,

2010-06-15

Quick Check

Symptom Quick Check

Noise / Unstable Flickering

• Image icker

• Audible noise

1. Verify known-good source sound le not causing speaker distortion.

Deep Dive

Check Result Action Code

1. Verify if user’s issue is due to

video ickering coming from display.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 76

Yes Suspected ickering issue, go

to step 2.

No Audible noise issue, go to

step 5.

2. Verify display listed in the System Proler’s Graphics/ Displays device tree is not disappearing intermittently (refresh System Proler to observe).

Yes Power and LCD panel ID are

OK. Go to step 3.

No Go to No Video symptom

code ow.

3. Backlight ickering may be related to EMI foam gasket shorting some pads on logic board or some pins from LVDS connector. Follow Take Apart instructions to remove the EMI foam gasket from LVDS cable and retest. Verify if ickering is gone when operating without foam gasket.

4. Inspect and reseat the LVDS cable and camera cable connection between display and logic board. Also test if brightness setting is a contributing factor. Has ickering stopped?

5. Substitute a known good display assembly to test logic board video output. Has ickering stopped?

Yes Issue solved. Replace EMI

foam so that it covers the connector frame, and does not touch any part of logic board or connector pins.

No Go to step 4.

Yes Loose cable connection. Issue

resolved.

No Go to step 5.

Yes Replace display assembly. L06

No Replace logic board. M04

2010-06-15

6. Verify the source of the noise is the electrical as opposed to mechanical. Audio noise should not be a concern now that LCD components are all solid state devices including LED backlights.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 77

Yes Noises that are not audible

from the normal user position are considered acceptable. Return unit to the user.

No Noise from another source.

Go to Noise/Hum/Vibration symptom table..

Mechanical/Physical Damage

Quick Check

Symptom Quick Check

Mechanical/Physical Damage

• Broken glass

• Broken hinge

• Stripped screw/head

• Stripped screw boss

• Dent or scratch to chassis

1. Determine damage caused by user/technician environment, accidental damage, or abuse.

2. Inform user/technician the failures are not covered by Apple warranties. Refer to

http://www.apple.com/legal/warranty

Cosmetic Defects

Quick Check

Symptom Quick Check

Cosmetic Defects

• Cracked LCD

• Scorched or melted LCD

• LCD impact damage

1. Determine damage caused by user/technician environment, accidental damage, or abuse.

2. Inform user/technician the failures are not covered by Apple warranties. Refer to

http://www.apple.com/legal/warranty

2010-06-15

Uncategorized Symptom

Quick Check

Symptom Quick Check

Uncategorized Symptom

Unable to locate appropriate symptom code

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Display 78

Verify whether existing symptom code applies to the issue reported by the user. If not, document reported symptom and send feedback to smfeedback@apple.

com stating that a suitable symptom code could not

be found.

Mass Storage

Hard Drive Read/Write Issue

Unlikely cause: LCD, speakers, fan, camera, microphone

Quick Check

Symptom Quick Check

Hard Drive Read/Write Issue Bad Sector/Defective Drive Formatting Issue

• Cannot save documents

• Read/Write error message

• Hang when accessing or saving data

1. Boot from Install DVD. Verify S.M.A.R.T. status of drive using Disk Utility.

2. Repair disk using Disk Utility.

3. Erase disk and reinstall Mac OS using Installer.

Deep Dive

Check Result Action Code

1. Start up from Restore DVD

and launch Disk Utility. Is hard drive available for Disk Utility to repair?

2. Did Disk Utility mount and repair hard drive successfully? Reseat hard drive if necessary.

Yes Go to step 2.

No Go to step 3.

Yes Restart computer. Go to step

No If computer has not been

veried with a known-good hard drive, go to step 3; otherwise, go to step 7.

2010-06-15

3. Substitute a known-good bootable hard drive, does system start up to desktop?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 79

Yes Reinstall user’s drive, go to

step 2.

No Continue to use known-

good bootable hard drive to determine root cause. Go to step 4.

4. After reseating hard drive SATA and logic board connections, does known-good hard drive boot to desktop?

Yes Reinstall user’s drive, go to

step 2

No Suspect hard drive SATA

cable, go to step 5.

5. Replace hard drive SATA cable and retest with known-good hard drive.

6. Did user’s hard drive start up successfully?

7. Partition, erase & install Mac OS on user’s hard drive. Did install complete without error and start up successfully?

8. Replace user’s hard drive. Does drive format correctly with a GUID partition map and install Mac OS without errors?

Yes Reinstall user’s drive, go to

step 2.

No Replace logic board. M19

Yes Issue resolved.

No Repair or replace hard drive,

go to step 7.

Yes Issue resolved

No Hard drive appears to be

defective, go to step 8.

Yes Issue resolved. H01

No SATA cable veried or

replaced and new hard drive installed, replace logic board.

Hard Drive Not Recognized/Not Mounting

X03

M19

2010-06-15

Unlikely cause: LCD, speakers, fan, camera, microphone, AirPort

Quick Check

Symptom Quick Check

Hard Drive Not Recognized/ Mount Drive No Boot

• Flashing question mark

• Boots to grey screen

• Boots to blue screen

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 80

1. Use a known-good mouse. Stuck mouse button will not allow boot.

2. Boot from Install DVD. Verify S.M.A.R.T. status of drive using Disk Utility.

3. Repair disk using Disk Utility.

4. Erase disk and reinstall Mac OS using Installer.

Deep Dive

Check Result Action Code

1. Boot from Restore DVD and launch Disk Utility. Is hard drive available for Disk Utility to repair?

2. Did Disk Utility mount and repair hard drive successfully? Reseat hard drive if necessary.

3. Substitute a known-good bootable hard drive, does computer start up to desktop?

4. After reseating SATA and logic board connections, does known-good hard drive start up to desktop?

Yes Go to step 2.

No Go to step 3.

Yes Restart computer, go to step

No If computer has not been

veried with a known-good hard drive, go to step 3; otherwise, go to step 7.

Yes Install user drive, go to step 2.

No Continue to use known-

good bootable hard drive to determine root cause. Go to step 4.

Yes Install user drive, go to step 2.

No Suspect hard drive SATA

cable, go to step 5.

5. Replace hard drive SATA cable and retest with known-good hard drive.

6. Did user’s hard drive start up successfully?

7. Partition, erase & install Mac OS on user’s hard drive. Did install complete without error and start up successfully?

8. Replace user’s hard drive. Does drive format correctly with a GUID partition map and install Mac OS without errors?

Yes Install user drive, go to step 2. X03

No Replace logic board. M19

Yes Issue resolved.

No Restore or replace user’s hard

drive, go to step 7.

Yes Issue resolved.

No Hard drive appears to be

defective. Go to step 8.

Yes Issue resolved. H01

No SATA cable veried or

replaced and new hard drive installed, replace logic board.

M19

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 81

Hard Drive Noisy

Unlikely cause: LCD, speakers, fan, camera, microphone

Quick Check

Symptom Quick Check

Hard Drive Noisy

• Noise during start up

• Noise during operation

• Noise when drive is copying or saving data

1. Start up from Install DVD. Verify S.M.A.R.T. status of hard drive using Disk Utility.

2. Repair disk using Disk Utility.

3. Check for reported noise and compare with

Knowledge Base article “Apple Portables: Hard Drives and Noise “

http://support.apple.com/kb/TS2354

Deep Dive

Check Result Action Code

1. Boot from Restore DVD and

launch Disk Utility. Is hard drive available for Disk Utility to repair?

Yes Go to step 2.

No Replace hard drive or go to

H01 Drive not recognized/ mount.

2010-06-15

2. Repair disk using Disk Utility and verify it completed successfully

3. Is hard drive still noisy? Yes Remove hard drive and start

4. Erase disk and reinstall Mac

OS using Installer. Did process complete?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 82

Yes Restart computer. Go to step

No Go to step 4.

up from external drive to test fan noise. Go to step 6.

No Issue resolved.

Yes Restart computer. Go to step

No Replace hard drive. Go to step 5.H06

5. After installing new hard drive, do you still have drive noise?

Yes Remove hard drive and start

up from external drive to test fan noise. Go to step 6.

No Issue resolved.

6. After removing hard drive, verify if the system is still noisy.

7. Install a known-good hard drive and verify if the noise level is similar to user’s hard drive.

Yes Fan noise or optical drive

noise likely to be the cause. See ODD Noisy table and Fan failures/Thermal issues table.

No Go to step 7.

Yes Hard drive noise level is

similar to a known-good drive and does not require replacement.

No Replace hard drive. Go to step 5.H06

Optical Drive Won’t Accept/Reject Media

Unlikely cause: LCD, speakers, fan, camera, microphone

Quick Check

2010-06-15

Symptom Quick Check

Optical Drive Won’t Accept/ Reject Media

• Cannot insert a disc into the drive

• Cannot eject a disc placed into the drive

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 83

1. Use Apple System Proler ATA section to see if the optical drive appears. If not, see Optical Drive Not Recognized.,

2. Restart computer and hold down mouse button or keyboard eject key to cycle optical drive.

3. Inspect optical drive slot for obstructions

Deep Dive

Check Result Action Code

1. Is optical drive listed in the

device tree for serial-ATA devices in System Proler?

2. Verify all connections between logic board, ex cable, and optical drive are secure. Visually inspect cables and connectors for any debris, damage, or bent pins. Is optical drive now listed in System Proler?

3. Disconnect user’s optical drive by lifting SATA cable at logic board and connecting a known good optical drive assembly. Is optical drive now listed in System Proler?

4. Install and test user’s optical drive with replacement SATA ex cable. Is optical drive now listed in System Proler?

Yes Optical drive has power,

inspect disc acceptance. Go to step 5.

No Inspect hardware. Go to step

Yes Optical drive has power,

inspect disc acceptance. Go to step 5.

No Replace any damaged cables

and retest. If connections are good and with no visible cable damage, go to step 3.

Yes SATA port functional,

reconnect user’s optical drive & SATA cable. Go to step 4.

No Replace logic board. M19

Yes Cable change resolved issue. X03

No Replace the optical drive.

(Mechanical damage to optical drive, if found)

X03

J03

(J06)

2010-06-15

5. Inspect optical drive slot for disc insert/eject. Is there clearance for disc use?

6. Insert known-good disc and test user’s optical drive for acceptance of disc. Does disc auto eject?

7. Does disc mount to desktop? Yes Go to Eject Test step 8.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 84

Yes Go to step 6.

No Replace damaged optical

drive or system top case that interferes with disc use.

Yes Replace the optical drive.

(Mechanical damage to optical drive, if found)

No Go to step 7.

No Go to Optical Drive

Read/Write Data Error troubleshooting page.

J01 (J05) X13

J03

(J06)

8. Does disc eject properly from

optical drive?

Yes Issue resolved.

No Replace optical drive or top

case that interferes with disc ejection.

J02 X13

9. With replacement ex cable

and interconnect board, is disc now recognized?

Yes Issue resolved.

No Replace optical drive. If drive

has already been replaced, then replace logic board.

Optical Drive Read/Write Data Error

Unlikely cause: LCD, speakers, fan, camera, microphone

Quick Check

Symptom Quick Check

Optical Drive Read/Write Data Error

• Errors when writing optical media.

• Errors when reading optical media.

• Hang when accessing or preparing to write data.

1. Test optical media in another drive of the same type in same type of machine to rule out media issue.

2. Check with known-good discs like the Install discs that came with the computer.

3. For write issues, check with known-good media that performs well in another computer and optical drive of the same type.

J03

2010-06-15

4. Check both CD and DVD media. If only one type of media is producing errors, there is a laser issue. (J99)

Deep Dive

Check Result Action Code

1. Is media free to spin without

optical drive scraping edge or surface of media?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 85

Yes Go to step 2.

No Replace optical drive. J03

2. Can optical drive read both CD and DVD known-good media?

Yes Go to step 6

No Reading CD only or DVD only

indicates laser issue, replace optical drive.

Optical drive cannot read any media reliably, go to step 3.

J03

3. Reseat cable connections

at logic board and optical drive. Verify that media is now recognized and reads reliably.

4. Disconnect optical drive by lifting SATA cable at logic board and connecting a known-good optical drive. Verify that media is now recognized and reads reliably.

5. Install and test with replacement optical drive SATA ex cable. Verify that media is now recognized and reads reliably.

6. Test write data to compatible CD and DVD media. Verify burned media is recognized and reads reliably.

Yes Reseat resolved issue. X03

No Go to step 4.

Yes SATA port functional,

reconnect user’s optical drive & SATA cable. Go to step 5.

No Replace logic board. M19

Yes Cable change resolved issue. X03

No Replace the optical drive.

(Mechanical damage to

J03 (J05)

optical drive, if found)

Yes Issue resolved.

No Replace the optical drive.

(Mechanical damage to

J03 (J06)

optical drive, if found)

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 86

Optical Drive Not Recognized/Mount

Unlikely cause: LCD, speakers, fan, camera, microphone

Quick Check

Symptom Quick Check

Optical Drive Not Recognized/ Mount

• Discs inject and eject, but do not appear in Finder

1. Use Apple System Proler ATA section to see if the optical drive appears.

2. Serial-ATA section of Apple System Proler will show any media inserted.

3. Check Finder Preferences: General and make sure “CD’s, DVD’s and iPods” is checked under “Show these items on the Desktop.”

4. Check both CD and DVD media. If only one type of media is recognized, there might be a laser related issue. (J99)

Deep Dive

Check Result Action Code

1. Is optical drive listed in the

device tree for SATA devices in System Proler?

2. Verify all connections between logic board, ex cable, optical drive are secure. Visually inspect cables and connectors for any debris, damage, or bent pins. Is optical drive now listed in System Proler?

Yes Issue resolved.

No Go to step 2.

Yes Issue resolved.

No Replace any damaged cables

and retest. If connections are good and with no visible cable damage, go to step 3.

X03

2010-06-15

3. Disconnect optical drive by lifting SATA cable at logic board and connecting a known-good drive. Is optical drive now listed in System Proler?

4. Install and test with replacement optical drive SATA ex cable. Is optical drive now listed in System Proler?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 87

Yes SATA port functional,

reconnect user’s optical drive & SATA cable. Go to step 4.

No Replace logic board. M19

Yes Cable change resolved issue X03

No Replace the optical drive.

(Mechanical damage to optical drive, if found)

J03 (J05)

Optical Drive Noisy

Unlikely cause: LCD, speakers, fan, camera, microphone

Quick Check

Symptom Quick Check

Optical Drive Noisy

• Noise during boot

• Noise during operation

• Noise when drive is copying or writing data

1. Test optical media in another drive of the same type in same type of computer to rule out media issue.

2. Check with known-good discs. Install discs that came with the computer.

3. Check to see if noise occurs without media in the drive. If so, check for hard drive (H06) and fan (M18) caused noise.

Deep Dive

Check Result Action Code

1. Is optical drive constantly

seeking or cycling eject mechanism without an optical disc installed? Optical drive should perform only one reset sequence and rest idle, ready for media.

2. Insert known good data CD. Is media free to spin without optical drive scraping edge or surface of media? Verify disc does not exceed maximum thickness specication.

Yes Continue and verify with

media, go to step 2.

No Replace optical drive if

continuous activity occurs with no disc installed.

Yes Continue and verify with

media, go to step 3.

No Internal mechanical

interference is aecting rotational spin of media, replace optical drive.

J04

2010-06-15

3. Initial disc handling noise is normal. Disc spinning and head seek indicate disc is mounting to desktop. Seek noise should settle down once mounted. Is noise above normal and related to seek activity?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 88

Yes Replace optical drive. J04

No Go to step 4.

4. Disc spin should cease 30 seconds after mounting data CD on OS desktop. Is the noise related to disc spin?

Yes Go to step 5.

No Go to step 6.

5. Remove the optical drive and check for the correct seating of the brackets on the optical drive and in the top case. Reinstall drive in unit and retest. Verify if drive is still noisy.

6. Eject known good data CD. Disc handling noise should be one pop of disc from motor hub and a motor gear sound driving disc out of optical drive. Is noise above normal and related to disc eject activity or multiple eject attempts?

7. Disc spin should cease 30 seconds after mounting data CD on desktop. Media may be mounting on a defective internal spindle hub. Is the noise related to disc spin?

Yes Go to step 6.

No Issue resolved. Optical drive

was not properly mounted in

(J05)

enclosure. (Possible physical damage to optical drive.)

Yes Replace optical drive. J02

No Go to step 7.

Yes Replace optical drive. J04

No Noise does not appear to be

related to optical drive.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 89

Optical Drive Not Performing to Specs

Unlikely cause: LCD, speakers, fan, camera, microphone

Quick Check

Symptom Quick Check

Optical Drive Not Performing to Specs

Read or write speeds slower than expected.

1. Test optical media in another drive of the same type in same type of computer to rule out media issue.

2. Check with known-good discs—Install discs that came with the computer.

3. For disc write issues, check with known-good media that performs well in another computer and drive of the same type.

4. Check both CD and DVD media. If only one type of media is producing errors, there might be a laser related issue. (J99)

Deep Dive

Check Result Action Code

1. Can optical drive read both CD

and DVD known-good media?

Yes Go to step 5

No Reading CD only or DVD only

indicates laser issue, replace optical drive.

J03

2010-06-15

2. Reseat cable connections at logic board and optical drive. Verify that media is now recognized and reads reliably.

3. Disconnect optical drive by lifting SATA cable at logic board and connecting a known-good drive. Verify that media is now recognized and reads reliably.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 90

Optical drive cannot read any media reliably. Go to step 2.

Yes Reseat resolved issue. X03

No Go to step 3.

Yes SATA port functional,

reconnect user’s optical drive & SATA cable. Go to step 4.

No Replace logic board. M19

4. Install and test with replacement optical drive SATA ex cable. Verify that media is now recognized and reads reliably.

Yes Cable change resolved issue. X03

No Replace optical drive.

(Mechanical damage to optical drive, if found)

J03 (J05)

5. Test write data to compatible

CD and DVD media. Verify burned media is recognized and reads reliably.

Yes Issue resolved.

No Replace optical drive.

Uncategorized Symptom

Quick Check

Symptom Quick Check

Uncategorized Symptom

Unable to locate appropriate symptom code

Verify whether existing symptom code applies to the issue reported by the user. If not, document reported symptom and send feedback to smfeedback@apple.

com stating that a suitable symptom code could not

be found.

(Mechanical damage to optical drive, if found)

J03 (J06)

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Mass Storage 91

Input/Output Devices

USB Port Does Not Recognize Known Devices

Unlikely cause: LCD, hard drive, optical drive

Quick Check

Symptom Quick Check

USB Port Does Not Recognize Known Devices

USB-wired keyboard/mouse or USB ash drive not recognized

1. Check the for latest software update.

2. Use Apple System Proler to verify the computer

recognizes the USB bus.

3. Test port with known good Apple keyboard or mouse.

4. Verify any USB hubs have sucient power.

Deep Dive

Check Result Action Code

1. Reset SMC and clear PRAM.

Was USB device recognized?

2. Is USB device receiving power from USB port? Note: rst device to need >500ma will get 1000ma, all others are limited to <500ma.

Yes Issue resolved.

No Go to step 2.

Yes Go to step 3.

No Replace logic board. M15

2010-06-15

3. Is the latest Mac-compatible USB software driver for this USB device installed?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 92

Yes Replace logic board. M15

No Obtain Mac-compatible USB

driver.

Built-in Keyboard Does Not Work Properly

Unlikely cause: LCD, hard drive, optical drive

Quick Check

Symptom Quick Check

Built-in Keyboard Does Not Work Properly

• Keystrokes not recognized

• Locks up

• Displayed characters don’t match

1. In System Preferences: International: Input Menu, enable Keyboard Viewer. Select Show Keyboard Viewer from the Input Menu in the menu bar. Test the keyboard.

2. Conrm correct keyboard layout is selected.

3. Update to the latest system software.

4. Press Caps Lock, if the Caps Lock light goes on

to show at least a partial connection to the main logic board.

5. Start up in Safe Mode to eliminate software that could aect the keyboard.

Deep Dive

Check Result Action Code

1. If specic keys are not working,

conrm if they are physically broken.

Yes Refer to “MacBook/

MacBook Pro: Black Keycap Replacement” (HT4002) or “MacBook: White Keycap Replacement” (HT4003). If a

keycap kit is available for this model, order kit and replace aected key(s).

2010-06-15

2. Reseat keyboard ex cable to logic board and verify that all keys are functional.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 93

Go to step 4.

If a keycap kit is not available for this model, replace complete top case.

Go to step 4.

No Go to step 2.

Yes Issue resolved. X99

No Go to step 3.

K01

3. Disconnect and verify that

keyboard ex cable is in good condition (no delamination or torn cable end, no missing or cracked tracks).

Yes Go to step 4.

No Replace top case. Go to step 5. K01

4. Reseat cable and check that ex cable end is fully inserted and aligned with connector on logic board, and that connector lock is closed. Verify that keyboard now functions properly. Reseat cable and verify with ASD that all keys are functional.

5. Verify that all keys are functional using ASD.

Yes Issue resolved. K01

No Replace top case. Go to step 5.

Yes Issue resolved. K01

No Replace logic board. M15

Specic Keys Don’t Work

Unlikely cause: power adapter, battery, speakers, diplay assembly, optical drive, hard drive, fan, microphone

Quick Check

Symptom Quick Check

Specic Keys Don’t Work

• Keycap broken

• Key switch broken

• Sticky key

• Key pressed not recognized

1. Determine if damage caused by user/technician environment, accidental damage, or abuse.

2. Inform user/technician the failures are not covered by Apple warranties. Refer to

http://www.apple.com/legal/warranty

3. Inspect keycap to remove debris trapped under it.

4. If the keycap is loose, check if clasp is still intact

and reattach it.

5. Refer to “MacBook/MacBook Pro: Black Keycap

Replacement” (HT4002) or “MacBook: White Keycap Replacement” (HT4003). If a keycap kit

is available for this model, order kit and replace aected key(s). If a kit is not available, replace complete top case (code K01).

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 94

Built-in Trackpad Does Not Work

Quick Check

Symptom Quick Check

Built-in Trackpad Does Not Work

• Cursor does not move.

• Select button of trackpad inoperable

• Multiple touch features inoperable

1. Check for environmental factors such as humidity, hand lotion or jewelry. Check if user is touching the trackpad simultaneously with both hands.

2. Clean the trackpad surface (with the computer powered o) using a clean, dry, lint-free cloth.

3. Make sure all software and rmware updates have been applied.

Deep Dive

Check Result Action Code

1. Can you see the trackpad

continuously listed on USB in Apple System Proler?

2. Does trackpad look damaged? Verify trackpad alignment is proper and click-depth set screw is at factory setting.

Yes Go to step 5.

No Go to step 2.

Yes Replace trackpad according

to symptom found.

- No mouse/trackpad response

- Trackpad cursor not tracking properly

- Trackpad button issues Go to step 6.

K02

K12

K13

2010-06-15

3. Reseat the trackpad ex cable to the logic board. Does trackpad work now?

4. Is the trackpad connector on the logic board damaged?

5. In System Preferences: Universal Access, turn o special Keyboard and Mouse & Trackpad settings. Set for normal use, enable and test multiple touch features. Does trackpad work now?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 95

No Go to step 3.

Yes Loose cable. Issue resolved.

No Go to step 4.

Yes Replace logic board. M24

No Go to step 5.

Yes Settings issue resolved.

No Go to step 6

6. Does the select button click? Verify trackpad alignment is proper and click-depth set screw is at factory setting.

Yes All trackpad issues resolved.

No Go to step 7

7. Does a known-good trackpad work?

Yes Replace trackpad according

to symptom found.

- No mouse/trackpad response

- Trackpad cursor not tracking properly

- Trackpad button issues

No Replace logic board. M16

Built-in Keyboard Has Dim or No Keyboard Backlight

Unlikely cause: LCD, hard drive, optical drive

Quick Check

Symptom Quick Check

Built-in Keyboard Has Dim or No Backlight

• In darkened room, keyboard backlight does not come on or is dim.

1. Make sure this computer model has a keyboard backlight option by checking the conguration label in the battery bay.

2. Make sure that keyboard backlight is turned on and brightness turned up.

K02

K12 K13

2010-06-15

3. Block the ambient light sensor to simulate darkened room.

Deep Dive

Check Result Action Code

1. Cover the ambient light sensor,

located near camera. Did the display dim?

2. Cover the ambient light sensor again. Did the keyboard backlight work?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 96

Yes Ambient light sensor is

working. Go to step 4.

No Go to step 2.

Yes Issue resolved.

No Go to step 3.

3. Measure the voltage between pin 4 and pin 2 of the keyboard backlight connector J5815. Is there voltage present with the running system in a dark room?

Yes Replace top case. K10

No Go to step 4.

4. Reseat the keyboard backlight connection to the logic board. Does the keyboard backlight work now?

5. In the Apple System Proler, can you see the AirPort and Bluetooth cards?

Yes Issue resolved.

No Go to step 5

Yes The light sensor connection

No Replace logic board. M99

Built-in Keyboard Is Not Recognized

Unlikely cause: LCD, hard drive, optical drive

Quick Check

Symptom Quick Check

Built-in Keyboard Is Not Recognized

• Keystrokes not recognized

1. Reset SMC.

2. Press Caps Lock. If the Caps Lock light comes on

that indicates at least a partial connection to the logic board.

L14

to logic board is likely good. Replace display assembly

2010-06-15

3. In System Preferences: International: Input Menu, enable Keyboard Viewer. Select Show Keyboard Viewer from the Input Menu in the menu bar. Test the keyboard.

Deep Dive

Check Result Action Code

1. In Apple System Proler do you

see “Apple Internal Keyboard/ Trackpad” listed under USB hardware devices?

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 97

Yes Go to step 3.

No Go to step 2.

2. Reset SMC and verify if keyboard/trackpad is now seen in Apple System Proler.

Yes Go to step 3.

No Replace logic board. M15

3. Disconnect and verify that keyboard ex cable is in good condition (no delamination or torn cable end, no missing or cracked tracks).

4. Reseat cable and check that ex cable end is fully inserted and aligned with connector on logic board, and that connector lock is closed. Verify that keyboard now functions properly.

5. Verify that all keys are functional using ASD.

Yes Go to step 4.

No Replace top case. Go to step 5. K11

Yes Issue resolved.

No Replace top case. Go to step 5. K11

Yes Issue resolved.

No Replace logic board. M15

Built-in Trackpad Does Not Track Properly

Unlikely cause: LCD, hard drive, optical drive

Quick Check

Symptom Quick Check

Built-in Trackpad Does Not Track Properly

• Cursor movement is random, uneven, or jumpy.

• Cursor hangs or stalls along path.

1. Check for environmental factors such as humidity, hand lotion or jewelry. Check if user is touching the trackpad simultaneously with both hands.

2. Clean the trackpad surface (with the computer o) using a clean, dry, lint free cloth.

3. Make sure all software and rmware updates have been applied.

4. If the issue occurs when system is running from the power adapter, use a grounded power cord with the power adapter.

2010-06-15

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 98

Deep Dive

Check Result Action Code

1. Can you see the trackpad

continuously listed under USB in Apple System Proler?

2. Does the trackpad look damaged?

3. Reseat the trackpad ex cable on the logic board. Does the trackpad work now?

4. Is the trackpad connector on the logic board damaged?

5. In System Preferences: Universal Access, turn o special Keyboard and Mouse & Trackpad settings. Does trackpad work now?

6. Does a known-good trackpad work?

Yes Trackpad communicating to

system. Go to step 5.

No Go to step 2

Yes Replace trackpad. Go to step 6.K02

No Go to step 3.

Yes Loose cable. Issue resolved.

No Go to step 4.

Yes Replace logic board. M24

No Go to step 5.

Yes Settings issue resolved.

No Go to step 6.

Yes Replace trackpad according

to symptom found.

- No mouse/trackpad response

- Trackpad cursor not tracking properly

- Trackpad button issues.

K02

K12 K13

2010-06-15

No Replace logic board. M16

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 99

Apple Remote Inoperable

Unlikely cause: LCD, hard drive, optical drive

Quick Check

Symptom Quick Check

Apple Remote Inoperable

• Remote is not recognized.

1. The computer is on and awake.

2. Check with known-good remote on user’s

computer and the user’s remote on known-good computer

3. Remote is used within 30 feet of the computer and unobstructed line-of-sight to the IR window.

4. Clean the IR window.

5. Open System Preferences: Security pane. Verify

that “Disable remote control infrared receiver” is not checked.

6. In Security pane, if “Unpair” button is active, press it and pair the Apple Remote. See “Pairing your Apple Remote with your computer” (Knowledge

Base HT1619).

Deep Dive

Check Result Action Code

1. Open Photo Booth or iChat’s

Video Preview window. Point Apple Remote at the built-in iSight camera, press any button on the remote, and verify that (as seen through the camera) there is a faint blinking light on the remote.

Yes Apple Remote is working. Go

to step 2.

No Replace the remote’s battery.

Go to step 2.

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2. Verify that you can pair the Apple Remote with a knowngood system?

3. Verify that Apple Remote now works.

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Input/Output Devices 100

Yes Go to step 3.

No Replace the Apple Remote.

Go to step 3.

Yes Issue resolved.

No Check and reseat IR/sleep LED

board cable connection at logic board. Go to step 4.

X04

Apple mb13 al late08 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

MacBook (13-inch, Aluminum, Late 2008)

Contents

Manual Updates

Updated 15 June 2010

Updated 14 May 2010

Updated 16 November 2009

Updated 21 August 2009

Updated 19 June 2009

Updated 9 June 2009

Updated 10 March 2009

Updated 16 December 2008

Updated 17 November 2008

Updated 19 October 2008

Updated 17 October 2008

Manual introduced 14 October 2008

Basics

Overview

Identifying Features

Note About Images in This Manual

Serial Number Location

Serial Number On Top Case

Transferring the Serial Number

General Information

Required Tools

The Glass Panel

Keycap Replacement

Troubleshooting

General Troubleshooting

Update System Software

Troubleshooting Theory

Hardware vs. Software

Functional Overview

Block Diagram

Liquid Submersion Indicators

Common Reset Procedures

Apple Service Diagnostics

Clamshell Service Diagnostic Read Me

Display Issue: Pixel Anomalies

Symptom Charts

Startup and Power Issues

No Power

Won’t Start Up

Intermittent Shutdown

No Video/Bad Video

Battery Isn’t Recognized or Won’t Charge

Kernel Panic/System Crashes

Battery Run Time Too Short

Won’t Run on Power Adapter Alone

Power Adapter Issue

Noise / Hum / Vibration

Burnt Smell / Odor

Battery Leaking or Swollen

Uncategorized Symptom

Communications

Ethernet Port/Device Issue

AirPort/Bluetooth: Defective Wireless Devices

No/Poor Wireless Signal

Wireless Input Device Loses Connection

AirPort Card: Kernel Panic

Wireless Performance Issue / Slow Connection

Wireless Input Device Doesn’t Pair

Uncategorized Symptom

Display

Display Anomalies

Defective Camera / Built-in iSight Not Operating Correctly

Blank / No Video

Backlight Issue / No Backlight

Quick Check

Noise / Unstable Flickering

Quick Check

Cosmetic Defects

Uncategorized Symptom

Mass Storage

Hard Drive Read/Write Issue

Hard Drive Not Recognized/Not Mounting

Hard Drive Noisy