Apple MacBook (13-inch, Aluminum, Late 2008) 08-10 Service Manual

Service Source

MacBook (13-inch, Aluminum, Late 2008)

Updated: 2008-10-19

Apple Inc.

© 2008 Apple Inc. All rights reserved.

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

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

Apple

1 Infinite Loop Cupertino, CA 95014-2084 USA

+ 1 408 996 1010 www.apple.com

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

MacBook (13-inch, Aluminum, Late 2008)

Contents

Manual Updates  8

Updated 19 October 2008  8

Updated 17 October 2008  8

Manual introduced 14 October 2008  8

Basics

Overview  10

Identifying Features  10

Note About Images in This Manual  11

Serial Number Location  12

Serial Number On Top Case  12

Transferring the Serial Number  12

General Information  13

Required Tools   13

The Glass Panel  14

Troubleshooting

General Troubleshooting			16
Update System Software			16
Troubleshooting Theory			16
Hardware vs. Software		16
Emerging Issues	16
Functional Overview		17
Block Diagram	18

Liquid Submersion Indicators  19

Common Reset Procedures  20

Symptom Charts  22

Startup and Power Issues  22

No Power  22

Won’t Start Up  25

Intermittent Shutdown  28

No Video/Bad Video  31

Battery Isn’t Recognized or Won’t Charge  34

Kernel Panic/System Crashes  37
Battery Run Time Too Short			40
Won’t Run on Power Adapter Alone				41
Power Adapter Issue	42
Noise / Hum / Vibration		43
Burnt Smell / Odor	45
Battery Leaking or Swollen			46
Uncategorized Symptom		46
Communications  47
Ethernet Port/Device Issue			47
AirPort/Bluetooth:Defective Wireless Devices					49
No/Poor Wireless Signal		51
Wireless Input Device Loses Connection  52
AirPort Card:Kernel Panic		54
Wireless Performance Issue / Slow Connection					55
Wireless Input Device Doesn’t Pair				58
Uncategorized Symptom		59

Display  60

Display Anomalies  60

Defective Camera / Built-in iSight Not Operating Correctly  64

Backlight Issue / No Backlight			66
Noise / Unstable Flickering		67
Mechanical/Physical Damage			68
Cosmetic Defects	68
Uncategorized Symptom		68
Mass Storage  69
Hard Drive Read/Write Issue			69
Hard Drive Not Recognized/Not Mounting					70
Hard Drive Noisy	72
Optical Drive Won’t Accept/Reject Media					73
Optical Drive Read/Write Data Error  75
Optical Drive Not Recognized/Mount				77
Optical Drive Noisy  78
Optical Drive Not Performing to Specs				80
Uncategorized Symptom		81

Input/Output Devices  82

USB Port Does Not Recognize Known Devices  82 Built-in Keyboard Does Not Work Properly  83 Specific Keys Don’t Work  84

Built-in Trackpad Does Not Work  84

Built-in Keyboard Has Dim or No Keyboard Backlight  85 Built-in Keyboard Is Not Recognized  86

Built-in Trackpad Does Not Track Properly  88 Apple Remote Inoperable  89

Built-in Speaker Has No Audio  90 Distorted Sound from Internal Speaker  91 Uncategorized Symptom  93

Mechanical Issues:Thermals and Enclosure  94

Reset/Power Button Stuck  94 System Runs Hot  95 Uncategorized Symptom  97

Take Apart

General Information  99

Connector Types on Logic Board  99

Icon Legend  102

Temperature Concerns  102

Replacement Steps  102

Screw Sizes  102

Access Door  103

Removal  104

Replacement  105

Battery  106

Removal  107

Replacement  108

Hard Drive Bracket  109

Hard Drive  111

Removal  112

Replacement  114

Installing Mac OS X and Applications   116

Installing Applications  116

Bottom Case  117

Removal  118

Replacement  119

Memory  120

Removal   121

Replacement  122

Mid Wall  123

Battery Connector Cover  125

Battery Cable Guide  127

Battery Power Cable  129

Removal  130

Replacement  130

Battery Indicator Light (BIL) Cable  131

Removal  132

Replacement  134

Camera Cable Guide  135

Removal  136

Replacement  136

LVDS Cable Guide  137

Display Assembly  139

Removal  140

Replacement  141

Display Clutch Cover  142

Removal  143

Replacement  144

AirPort Card  145

Removal  146

Replacement  147

AirPort Antenna	148
Optical Drive  150
Removal  151
Replacement	152
Optical Drive Flex Cable  154
Right Speaker / Subwoofer  156
Removal  157
Replacement	158

Hard Drive Connector Cable  159

Removal	160
Replacement		161
Fan  162
Keyboard Flex Bracket  164
Logic Board	166
Removal	167
Replacement		170

Left Speaker  171

Removal  172

Replacement  173

MagSafe Board  174

Removal  175

Replacement  175

Heatsink  176

Removal  177

Replacement  178

Microphone Cable  180

Removal  181
Replacement	182
Center Bracket	183

Kensington Lock  184

Hard Drive Front Bracket with IR/Sleep Cable  186

Top Case  188

Views

Exploded Views		191
Main Assembly, 1 of 2			191
Main Assembly, 2 of 2			192
Display Assembly  193
External Views		194
Port View	194
Screw Chart	195

Screw Location Diagrams  197

Bottom Case  197

Display Assembly  198

Top Case  199

Manual Updates

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

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) Basics — Manual Updates  8

Service Source

Basics

MacBook (13-inch, Aluminum, Late 2008)

© 2008 Apple Inc. All rights reserved.

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 differences 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 identification 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.

2008-10-19

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

Product Configurations

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

Feature	Better (MN466)	Best (MB467)
Intel Core 2 Duo processor	2.0 GHz	2.4 GHz
Memory, DDR3 1066, SO-DIMMs	2 GB (2 x 1 GB);	2 GB (2 x 1 GB);
	up to 4 GB (2 x 2 GB)	up to 4 GB (2 x 2 GB)
Hard Drive, Serial ATA 100 5400	160 GB;	250 GB;
rpm	up to 320 GB	up to 320 GB
Optical Drive (SATA)	8x DL Super, 9.5 mm	8x DL Super, 9.5 mm
Keyboard	Backlight on configure-to-order	Backlight
Housing	Aluminum	Aluminum
Display	13.3-inch glass LCD, 1280x800, 114 dpi, LED backlight,
	glossy finish
Battery	45-Whr Lithium Ion
Power Adapter	60 W MagSafe

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 differences in appearance between the image pictured and the computer you are servicing. However, although the appearance may differ, the steps and sequence are the same unless noted.

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

2008-10-19

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

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.

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.

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) Basics — Serial Number Location  12

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 flatblade tool

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

•Alcohol wipes

•Permanent marking, felt-tip pen (optional)

•Pencil with eraser

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

•Kapton tape

•Digital volt meter (troubleshooting)

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)

•Apple Hardware Test

2008-10-19

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

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.

2008-10-19

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

Service Source

Troubleshooting

MacBook (13-inch, Aluminum, Late 2008)

© 2008 Apple Inc. All rights reserved.

General Troubleshooting

Update System Software

Important: Whenever possible before beginning troubleshooting, ensure the latest software and firmware updates have been applied.

Troubleshooting Theory

For general information on troubleshooting theory, refer to:

http://service.info.apple.com/service_training/en/006/troubleshoot/index.php?page=intro

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>

Emerging Issues

For the latest on troubleshooting issues, refer to:

http://support.apple.com/kb/index?page=search&q=khot%20MacBook%20Emerging%20 Issue

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Update System Software  16

Functional Overview

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

Camera (includes AirPort, Bluetooth, camera, and ambient light sensor)

•failure of any parts listed above

•no keyboard backlight

•no startup if AirPort cable short

Optical drive:

•no optical drive visible

•no startup from optical drive

Hard drive:

•no hard drive visible

•no startup from hard drive

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)

Trackpad, trackpad button thermal sensor:

•no cursor movement

•no click action

•runs slow (no sensor input)

Right speaker/subwoofer:		Fan:		LCD, backlight:
		• intermittent shutdown		• no video on internal
• no sound from right speaker or
		• freezes		LCD
subwoofer
		• noisy fan		• no backlight
• distorted sound from right or
center

Keyboard, power		Keyboard		Memory:		Battery (under logic
on button:		backlight:		• no startup		board):
• no power		• no keyboard		• pointer unresponsive		• no power when
• nonresponsive		backlight		and kernel panic		battery only
keys				• video artifacts		• no power on

MagSafe connector (under logic board):

•no power on

•no battery charge

Connectors on the other side of logic board:

Heatsink thermal sensor

•no startup

•system shutdown

•pointer unresponsive

Left speaker

•no sound from left

•distorted sound on left

Microphone

• no integrated sound input

Battery indicator LEDs, battery button:

•no battery error

•no battery level while charging

•no battery level shown when button pressed

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Functional Overview  17

2008-10-19

Block Diagram

Refer to this diagram to see how modules are interrelated.

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Block Diagram  18

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

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Liquid Submersion Indicators  19

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 off.

2.Disconnect the power adapter and remove the main battery.

3.Hold the power button down for five seconds, then release.

4.Install the main battery and connect the power adapter.

5.Press the power button to restart the computer.

Resetting the SMC means you will also need to reset the date and time (using the Date & Time pane of System Preferences).

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 off.

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:

http://www.apple.com/support

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

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Common Reset Procedures  20

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>

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Common Reset Procedures  21

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		1.	Verify AC power presence with MagSafe LED
	•	No power		indicating on or charge state.
	•	No image	2.	Verify battery status as being partly charged,
	•	No startup chime		charging with AC power.
	• No fan or hard drive spin		3.	If battery is not recognized, remove battery and
	• No reset sound from optical
				try to run from AC only.
		drive	4.	Reset SMC.
	• No sleep LED activity
			5.	Verify with known-good battery.
	• No light if Caps Lock pressed

•Non-operational

Deep Dive

Check	Result	Action	Code
1. Isolate peripherals as cause.	Yes	Suspect peripherals as cause.
Disconnect all peripherals and		Reconnect each one at a time,
external devices and verify unit		verifying unit operation as
starts.		external device is reinstalled.
	No	Go to step 2

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues  22

2. Reset SMC., and verify unit		Yes	Corrupt SMC state preventing
	starts. (Alternative hardware		power on. Issue resolved with
	SMC reset can be forced by		SMC reset.
	shorting R5001 pads on logic
	board or removing all system
		No	Go to step 3
	power for 1 minute.) Can
	system start up after SMC
	reset?
3. Will system power up with		Yes	System can start up from	P11
	battery only? Check battery		known-good battery --
	level LED indicator for status		customer battery possibly at
	of battery charge or battery		fault or needs to be charged.
	use error. Inspect battery		Continue to verify customer
	connector for burn marks or		battery then AC adapter use
	damaged pins if substituting a		and battery charging. Go to
	known-good battery to verify		step 4.
	starting on battery.
		No	System will not power using
			known-good battery only. Go
			to step 5
4. Customer battery may be run		Yes	Battery is recognized,
	down, or not recognized.		charging and health is good.
	Verify customer battery in		Return to test unit with
	a known-good system is		customer battery and AC
	recognized and accepting a		adapter power. Go to step 6.
	charge. Confirm customer
		No	Replace customer battery	P10
	battery is not consumed nor
	defective.		for not charging (P10) or not	or
			recognized (P11). Customer	P11
			to purchase a replacement
			battery if consumed.
5.	Inspect battery cable	Yes	Battery power restored, return
	connection at logic board and		to test unit with customer
	reseat if necessary. Replace		battery and AC adapter
	cable if found damage or		power. Go to step 6.
	burned. Can the system power
		No	Logic board is expected to
	on from a charged battery with
			power on with battery only.
	battery cable inspections or
			Inspect and test power on
	replacement?
			key. Go to step 10.
6.	Inspect MagSafe power	Yes	Power adapter is good, go to
	adapter. Verify AC adapter is		step 7
	correct wattage, compatible
		No	Release stuck pin or replace	P14
	with product and works on
			adapter due to wire damage,
	known-good computer.
			not working or burned pins

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues  23

7.	Inspect MagSafe port on	Yes	Go to step 8
	computer for physical damage,
		No	Clean port assembly. Replace	X03
	debris or metal fragments
			MagSafe board if necessary.
	attracted to magnetic
	connector. Is MagSafe
	connector clean and free from
	defects?
8.	Verify adapter status LED	Yes	System starts and has power.
	turns on green then orange		MagSafe LED indicates power
	indicating power and battery		is flowing to logic board.
	charge in progress.		Verify customer battery will	P11
	A green LED can indicate a full		also charge. Review battery
	battery, removal of battery or		health to ensure customer
	battery not recognized.		satisfaction.
		No	AC power is down or battery
			is not charging. Go to step 9
9.	Verify power from adapter is	Yes	Logic board has power	X03
	present on logic board.		adapter energy to start
	Remove system battery, use AC		system, 16.7V found on Q7001.
	power only. With DVM, verify		MagSafe cable reseat or
	voltage presence of Q7001, pin		replacement resolved issue.
	5 is 16.7Vdc with AC adapter		If still no system power on
	connected. Reseat or test		indications, go to step 10
	known-good MagSafe cable to
		No	No voltage measured on
	achieve power for logic board.
			Q7001, AC adapter power not	M21
			going to logic board power
			supplies. Replace logic board.
10.	Test and inspect Top Case	Yes	Power on key works fine, issue
	Power Button.		resolved.
	Stuck or open power on
	key or keyboard disconnect		Power on key works when
	can disable the power on		keyboard cable is reseated.
	of system. If button does
			Power on key appears to	K05
	not work, locate R5015 pads
	on logic board just above		be stuck, had to remove
	trackpad connector, and		keyboard cable for R5015
	short pads to power up logic		power on. Replace top case
	board. If power on key is		for stuck power on key
	stuck, keyboard cable must
		No	No logic board power on	M01
	be disconnected for R5015 to
			when shorting R5015 pads.
	work. Does system power on?
			Replace logic board.
	(Reconnect keyboard cable to
	confirm bad or intermittent
	connections.)

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues  24

Won’t Start Up

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

Quick Check

	Symptom	Quick Check
	Power but No start up	1.	Reset SMC.
	• No startup chime, some video	2.	Verify startup process passes initial memory
	activity, Apple logo, startup
			checks – no beep errors or flashing sleep LED
	spin dial		indicators. Display activity is starting up.
	• Startup chime with possible	3.	Clear PRAM.Verify starts up from user drive.
	beep tones.
		4.	Connect known-good external bootable device
	• Fan, hard drive spin or optical
			and press Alt key during startup then select
	drive reset sound
			external startup device to bring up system for
	• Sleep LED is on , blinking or
			diagnostics.
	went out	5.	Verify presence and status of user hard drive. Use
	• Caps Lock LED toggles when
			Disk Utility to repair drive and file permissions.
	pressed

Deep Dive

Check		Result	Action	Code
1.	Reset SMC and Clear PRAM to	Yes	User hard drive bootable,
	set default startup device to		issue resolved default
	internal hard disk drive (HDD).		settings.
		No	Customer system not starting
			up, go to step 2
2.	Is system indicating a memory	Yes	Troubleshoot memory issues,
	error with repeated sleep LED		go to step 3
	1 or 3 flash sequence and beep
		No	Continue with startup
	tones if sound is enabled?
			sequence verification go to
			step 4

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues  25

3.	Reseat customer memory	Yes	Customer memory defective	X02
	and/or swap in known-		and replaced. Continue to
	good memory to isolate bad		verify startup process. Go to
	memory and replace defective		step 4
	parts.
		No	Should known-good memory	M07
			fail in one or more slots,
			replace logic board.
4.	Hold the Alt (Option) key	Yes	System starting up from
	during startup and verify there		customer hard drive. Startup
	is a bootable hard drive shown		issue resolved
	in Startup Manager. Choose
		No	Customer hard drive not
	customer hard drive. Does
			present or does not start up
	start up from this drive work?
			from this drive. Continue to
			find bootable device. Go to
			step 5
5.	Insert product OS install disc	Yes	Starts up from optical drive -
	in optical drive. Install disc		customer hard drive not yet
	is bootable and should be		bootable, go to step 8
	present in Startup Manager.
		No	Computer has no internal
	Can system start up from OS
			bootable devices. Test
	install disc?
			external startup devices, go
			to step 6
6.	Boot from a known-good	Yes	System started up from
	bootable copy of product OS		external device and reports
	on a USB drive or network		data regarding internal SATA
	server to start up and verify		devices. Go to step 7
	internal mass storage devices
		No	No startup devices available.	M02
	are available using System
			Replace logic board
	Profiler and Disk Utility.
7.	Troubleshoot optical drive	Yes	Cable reseat solved issue.
	and optical drive cable with		Continue to verify hard drive
	cable reseat and known-		issues, go to step 8
	good part substitutions. Is
	there a defective optical drive
	component to replace?		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

2008-10-19

MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues  26

8.	Use Disk Utility loaded from	Yes	Customer hard drive available
	OS install disc to verify if hard		for inspections and repair. Go
	drive is available on device list.		to step 10.
	Is customer hard drive listed in
	Disk Utility?
		No	Hard drive not present,
			troubleshoot hard drive and
			cable. Go to step 9.
9.	Troubleshoot hard drive and	Yes	Reseat of SATA cable now has
	hard drive SATA cable with		customer hard drive visible in
	cable reseat and known-good		Disk Utility, go to step 10
	part substitutions. If customer
			Defective hard drive SATA	X03
	hard drive, is there a defective
			cable found and replaced,
	hard drive component to
			now has customer hard drive
	replace?
			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	M19
			known-good hard drive SATA
			cable used, still no hard drive
			present. Replace logic board
10.	Boot system with Shift key	Yes	Go to software
	down. Does it work?		troubleshooting article
		No	Go to step 11
11.	Use Disk Utility to repair	Yes	OS on customer hard drive
	customer hard drive and		repaired, issue resolved.
	repair permissions if system OS
	found on hard drive. Is hard
		No	Hard drive not bootable,
	drive bootable after software
			perhaps missing OS, go to
	repairs?
			step 12
12.	Use Disk Utility to partition	Yes	Customer hard drive now
	customer hard drive with one		starts up from new OS image,
	GUID partition then restore		issue resolved
	Mac OS from product OS install
	disc. Is hard drive bootable
		No	Replace hard drive.	H02
	after OS install?

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MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues  27

Intermittent Shutdown

Unlikely cause: hard drive, optical drive

Quick Check

	Symptom	Quick Check
	Intermittent shutdown	1.	Verify battery charge status
	• Powers off during startup	2.	Check AC adapter MagSafe connector and
	• Powers off with desktop use
			connection with system
		3.	Reset SMC and PRAM
		4.	Start up with shift key down for safe mode
		5.	Start up from known-good bootable device
		6.	Check system.log info for shutdown cause
		7.	Run AHT /ASD for sensors + thermal test

Deep Dive

Check	Result	Action	Code
1. Identify shutdown code	Yes	Check for sudden shutdown
recorded in system log file.		error code explanation
Open the system.log file with		in Knowledge Base and
console application. Search		shutdown causes table
for occurrences of“previous		in service manual to find
shutdown cause”return codes.		expected cause of shutdown,
Verify system log looking for		and check item accordingly :
codes that indicate abnormal
shutdown events.		-Intermittent power means
		checking battery health , AC
		source and MagSafe cable
		seating ; go to step 4
		-Sleep means running sleep
		sensor test; go to step 7
		-Overtemp means checking
		for clogged heatsink, shorted
		sensors cables or defective
		fan; go to step 8
	No	system.log lists only normal
		shutdown codes, no codes
		related to heat sensors or
		power concerns. 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 clear PRAM;	Yes	Shutdown cause related to
then monitor system		SMC or PRAM resolved by
performance to verify if		changing to default settings.
system shutdowns cease. Are
shutdown symptoms and
	No	Shutdown event still occurs.
events gone?
		Go to step 3.
3. Start up from product OS	Yes	Shutdown events cease on
install disc or from an external		known-good OS. Reinstall
hard drive with product Mac		Mac OS on customer hard
OS.		drive and update OS with
Are shutdown symptoms and		latest version and check
events gone while starting up		if bootROM updates are
from this known-good Mac		available.
OS?
	No	Symptoms unchanged - go to
		step 4
4. Check system running on	Yes	Recharge customer battery	P09
battery only. Use known-good		and retest. Check for
charged battery.		customer battery health in
Verify that shutdown/reset/		Apple System Profiler or run
sleep issues disappear when		battery testing utility, and
known-good battery is used		replace if reported battery
without AC adapter.		health is reported bad or
		consumed.
	No	Symptoms unchanged - Go
		to step 5
5. Check with known-good AC	Yes	Faulty adapter. Replace	P14
adapter source only		customer AC adapter if AC
Remove battery and use		cable and duckhead were
known-good AC adapter.		confirmed faulty.
Does the shutdown/reset/
	No	Symptoms unchanged - Go
sleep issue disappear with
		to step 6
known-good adapter?
6. Check if power removed error	Yes	If power failure related, check
reported“improper shutdown		adapter-related connections	X03
detected”in system.log		(stuck pins, cable damage,
If shutdown error is related		etc.). If so, replace MagSafe
to power removed shutdown		port connector.
cause, run ASD and check for
	No	Go to step 9
overvoltage sensor failure
reported.

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

7.	Check if sleep event happens	Yes	Check for intermittently
	repeatedly in system.log		shorted sleep sensor in top	X03
	If sleep/wake events are		case. If damaged, replace
	repeatedly reported, plug		sensor/cable of top case.
	external monitor and run ASD
	to check for sleep sensor test.		Check IR cable is properly	X03
	Verify if sleep sensor test is		seated
	failing.		Reseat and retest sleep sensor	X03
			with ASD. If failing again,
			check for presence of magnet
			in display assembly above
			sensor.
			If magnet present, replace	M22
			sensor/cable or top case and
			retest. If still sleep sensing
			failing, replace logic board
			if magnet missing replace	L15
			display assembly
		No	Go to step 8
8.	Check if over temp cause	Yes	-If fan not running failure,
	reported in system.log		check for fan cable seating
	If shutdown error is related		and retest. If same failure
	to over temp shutdown		after retest replace fan with	M18
	cause, run ASD and verify		known-good fan and retest.
	that a sensor or fan failure is		If does not happen with
	reported.		known-good fan, replace fan.
			-If over temp failure reported
			check for cause of over temp
			like obstructed vent, dust	X03
			in heatsink fin, or clogged
			fan and retest. If still failing
			replace part where sensor is
			located (logic board, battery,
			display assembly or trackpad)
			according to the sensor
			location table of service
			manual.
			Go to step 9
		No	Replace Thermal module	X10
			Go to step 9

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