Compaq PRESARIO CQ71, PRESARIO G71 User Manual

Compaq Presario CQ71 Notebook PC and

HP G71 Notebook PC

Maintenance and Service Guide

© Copyright 2009 Hewlett-Packard

Development Company, L.P.

Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. Intel, Celeron, Core, and Pentium are trademarks of Intel Corporation in the U.S. and other countries. Microsoft, Windows, and Windows Vista are U.S. registered trademarks of Microsoft Corporation. SD Logo is a trademark of its proprietor.

The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

First Edition: April 2009

Document Part Number: 518440-001

Safety warning notice

WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing, during operation. The computer and the AC adapter comply with the user-accessible surface temperature limits defined by the International Standard for Safety of Information Technology Equipment (IEC 60950).

iii

iv Safety warning notice

Table of contents

1	Product description
2	External component identification
	Top components .................................................................................................................................	10
	TouchPad ..........................................................................................................................	10
	Lights .................................................................................................................................	11
	Buttons and speakers ........................................................................................................	13
	Keys ...................................................................................................................................	14
	Front components ..............................................................................................................................	15
	Right-side components .......................................................................................................................	15
	Left-side components .........................................................................................................................	16
	Rear component .................................................................................................................................	17
	Bottom components ...........................................................................................................................	18
	Display components ...........................................................................................................................	19
	Wireless antennas ..............................................................................................................................	20
	Additional hardware components .......................................................................................................	21
3	Illustrated parts catalog
	Service tag .........................................................................................................................................	22
	Computer major components .............................................................................................................	23
	Display assembly components ...........................................................................................................	30
	Plastics Kit ..........................................................................................................................................	32
	Mass storage devices .........................................................................................................................	33
	Miscellaneous parts ............................................................................................................................	34
	Sequential part number listing ............................................................................................................	35
4 Removal and replacement procedures
	Preliminary replacement requirements ...............................................................................................	40
	Tools required ....................................................................................................................	40
	Service considerations .......................................................................................................	40
	Plastic parts .......................................................................................................	40
	Cables and connectors .....................................................................................	41
	Drive handling ...................................................................................................	41

v

	Grounding guidelines .........................................................................................................	42
	Electrostatic discharge damage ........................................................................	42
	Packaging and transporting guidelines .............................................	43
	Workstation guidelines .....................................................................	43
	Equipment guidelines .......................................................................	44
	Component replacement procedures .................................................................................................	45
	Service tag .........................................................................................................................	45
	Computer feet ....................................................................................................................	46
	Battery ...............................................................................................................................	47
	WLAN module ....................................................................................................................	48
	Optical drive .......................................................................................................................	53
	Memory module .................................................................................................................	54
	Hard drive ..........................................................................................................................	56
	Modem module ..................................................................................................................	58
	RTC battery .......................................................................................................................	59
	Keyboard ...........................................................................................................................	60
	Keyboard cover ..................................................................................................................	63
	Power button board ...........................................................................................................	65
	Display assembly ...............................................................................................................	66
	Top cover ...........................................................................................................................	72
	Speakers ............................................................................................................................	75
	System board .....................................................................................................................	76
	Bluetooth module ...............................................................................................................	79
	Fan/heat sink assembly .....................................................................................................	81
	Processor ...........................................................................................................................	84
5	Setup Utility
	Starting Setup Utility ...........................................................................................................................	86
	Using Setup Utility ..............................................................................................................................	87
	Changing the language of Setup Utility .............................................................................	87
	Navigating and selecting in Setup Utility ............................................................................	87
	Displaying system information ...........................................................................................	88
	Restoring default settings in Setup Utility ..........................................................................	89
	Exiting Setup Utility ............................................................................................................	89
	Setup Utility menus ............................................................................................................................	90
	Main menu .........................................................................................................................	90
	Security menu ....................................................................................................................	90
	System Configuration menu ..............................................................................................	91
	Diagnostics menu ..............................................................................................................	92
6	Specifications
	Computer specifications .....................................................................................................................	93
	17.3-inch, BrightView display specifications .......................................................................................	94

vi

Hard drive specifications ....................................................................................................................	95
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe ..............................	96
Blu-ray ROM with LightScribe DVD±R/RW SuperMulti DL Drive .......................................................	97
System DMA specifications ................................................................................................................	98
System memory map specifications ...................................................................................................	98
System interrupt specifications ...........................................................................................................	99
System I/O address specifications ...................................................................................................	100
7 Screw listing
Phillips PM2.5×7.0 screw .................................................................................................................	103
Phillips PM2.5×6.0 screw .................................................................................................................	106
Phillips PM2.5×6.0 captive screw .....................................................................................................	109
Phillips PM2.5×5.0 screw .................................................................................................................	110
Phillips PM3.0×4.0 screw .................................................................................................................	111
Phillips PM3.0×4.0 captive screw .....................................................................................................	112
Phillips PM2.0×3.0 screw .................................................................................................................	113
8 Backup and recovery
Creating recovery discs ....................................................................................................................	116
Backing up your information .............................................................................................................	117
When to back up ..............................................................................................................	117
Backup suggestions .........................................................................................................	117
Using system restore points ............................................................................................	117
When to create restore points .........................................................................	117
Create a system restore point .........................................................................	118
Restore to a previous date and time ...............................................................	118
Performing a recovery ......................................................................................................................	119
Recovering from the recovery discs ................................................................................	119
Recovering from the dedicated recovery partition (select models only) ..........................	119
9 Connector pin assignments
Audio-in (microphone) ......................................................................................................................	120
Audio-out (headphone) .....................................................................................................................	120
External monitor ...............................................................................................................................	121
RJ-11 (modem) ................................................................................................................................	122
RJ-45 (network) ................................................................................................................................	122
Universal Serial Bus .........................................................................................................................	123
10 Power cord set requirements
Requirements for all countries or regions .........................................................................................	124
Requirements for specific countries or regions ................................................................................	125

vii

11 Recycling
Battery ..............................................................................................................................................	126
Display ..............................................................................................................................................	126
Index .................................................................................................................................................................	132

viii

1 Product description

Category	Description	Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
		CQ71	Notebook	G71	CQ71	Notebook	G71
		Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
		(UMA)		(UMA)	(Discrete)		(Discrete)
Product	Compaq Presario	X			X
Name	CQ71 Notebook PC
	HP G71 Notebook		X	X		X	X
	PC
Processors	Intel® Core®2 Duo
	processors:
	P8700 2.53-GHz	X	X	X	X	X	X
	processor (3-MB L2
	cache, 1066-MHz
	front-side bus
	(FSB))
	P7450 2.13-GHz	X	X	X	X	X	X
	processor (3-MB L2
	cache, 1066-MHz
	FSB)
	T6600 2.2-GHz	X	X	X	X	X	X
	processor (2-MB L2
	cache, 800-MHz
	FSB)
	T6400 2.0-GHz	X	X	X	X	X	X
	processor (2-MB L2
	cache, 800-MHz
	FSB)
	Intel Pentium®
	Processors:
	T3400 2.16-GHz	X	X	X	X	X	X
	processor (1-MB L2
	cache, 667-MHz
	FSB)
	T4200 2.00-GHz	X	X	X	X	X	X
	processor (1-MB L2
	cache, 800-MHz
	FSB)
	Intel Celeron®
	Processors:

1

Category	Description	Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
		CQ71	Notebook	G71	CQ71	Notebook	G71
		Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
		(UMA)		(UMA)	(Discrete)		(Discrete)
	585 2.16-GHz	X	X	X
	processor (1-MB L2
	cache, 667-MHz
	FSB)
	T1700 1.83-GHz	X	X	X
	processor (1-MB L2
	cache, 667-MHz
	FSB)
	900 2.2-GHz	X	X	X
	processor (1-MB L2
	cache, 667-Mhz
	FSB)
	T1600 1.66-GHz	X	X	X
	processor (1-MB L2
	cache, 667-MHz
	FSB)
Chipset	Northbridge
	Intel GL40	X	X	X
	Intel GM45	X	X	X
	Intel PM45				X	X	X
	Southbridge: Intel	X	X	X	X	X	X
	ICH8M
Graphics	Intel GMA 4500M	X	X	X
	(shared memory)

2 Chapter 1 Product description

Category	Description	Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
		CQ71	Notebook	G71	CQ71	Notebook	G71
		Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
		(UMA)		(UMA)	(Discrete)		(Discrete)
	Intel GMA	X	X	X
	4500MHD (shared
	memory)

●Up to 285 MB on computer models equipped with 1024 MB of main system memory

●Up to 797 MB on computer models equipped with 2048 MB of main system memory

●Up to 1309 MB on computer models equipped with 3072 MB of main system memory

●Up to 1309 MB on computer models equipped with 4096 MB of main system memory (32-bit OS)

●Up to 1759 MB on computer models equipped with 4096 MB of main system memory (64-bit OS)

3

Category	Description	Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
		CQ71	Notebook	G71	CQ71	Notebook	G71
		Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
		(UMA)		(UMA)	(Discrete)		(Discrete)
	NVIDIA N10M-GE2-				X	X	X
	S with 512 MB
	dedicated video
	memory
	● Up to 767 MB
	on computer
	models
	equipped with
	1024 MB of
	main system
	memory
	● Up to 1278 MB
	on computer
	models
	equipped with
	2048 MB of
	main system
	memory
	● Up to 1790 MB
	on computer
	models
	equipped with
	3072 MB of
	main system
	memory
	● Up to 1790 MB
	on computer
	models
	equipped with
	4096 MB of
	main system
	memory (32-bit
	OS)
	● Up to 2302 MB
	on computer
	models
	equipped with
	4096 MB of
	main system
	memory (64-bit
	OS)
Panel	17.3-inch 16:9 wide-	X	X	X	X	X	X
	aspect ratio
	(1600×900), white-
	LED backlit, HD
	BrightView display
	panel
Memory	2 SODIMM slots	X	X	X	X	X	X
	Customer-	X	X	X	X	X	X
	accessible/
	upgradable

4 Chapter 1 Product description

Category	Description		Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
			CQ71	Notebook	G71	CQ71	Notebook	G71
			Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
			(UMA)		(UMA)	(Discrete)		(Discrete)
	Support for DDR2		X	X	X	X	X	X
	dual-channel 800-
	MHz
	Support up to 4-GB		X	X	X	X	X	X
	max system
	memory in the
	following
	configurations:
	●	1024-MB	X	X	X	X	X	X
		(1024×1)
	●	2048-MB	X	X	X	X	X	X
		(1024×2)
	●	2048-MB	X	X	X	X	X	X
		(2048 ×1)
	●	3072-MB	X	X	X	X	X	X
		(1024×1 +
		2048×1)
	●	4096-MB	X	X	X	X	X	X
		(2048×2)
Hard drives	Support for 9.5-mm,		X	X	X	X	X	X
	6.35-cm (2.50-in)
	hard drives
	Customer		X	X	X	X	X	X
	accessible
	Single hard drive		X	X	X	X	X	X
	configurations:
	500-GB, 5400-rpm		X	X	X	X	X	X
	320-GB, 5400-rpm		X	X	X	X	X	X
	250-GB, 5400-rpm		X	X	X	X	X	X
	160-GB, 5400-rpm		X	X	X	X	X	X

5

Category	Description	Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
		CQ71	Notebook	G71	CQ71	Notebook	G71
		Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
		(UMA)		(UMA)	(Discrete)		(Discrete)
Optical	Fixed SATA 12.7-	X	X	X	X	X	X
drives	mm tray load
	Support for:
	● DVD±RW and
	CD-RW
	SuperMulti
	Double-Layer
	Combo Drive
	with
	LightScribe
	● Blu-ray ROM
	with
	LightScribe
	DVD±R/RW
	SuperMulti DL
	Drive
Camera	VGA camera,	X	X	X	X	X	X
	640×480 by 22.5
	frames per second
	Low-light fixed angle
	with activity light
Microphone	Single analog	X	X	X	X	X	X
	microphone
Audio	High-definition	X	X	X	X	X	X
	audio supports
	Microsoft premium
	requirements
Modem	56K V.92 data/fax	X	X	X	X	X	X
	MDC modem
Ethernet	Integrated Realtek	X	X	X	X	X	X
	8102E 10/100
	network interface
	card (NIC)
Wireless	Integrated wireless
	local area network
	(WLAN) options by
	way of wireless
	module:
	Atheros AR9280	X	X	X	X	X	X
	802.11a/b/g/n
	WLAN module
	Broadcom	X	X	X	X	X	X
	BCM4312 802.11b/
	g WLAN module
	Atheros AR2425	X	X	X	X	X	X
	802.11b/g WLAN
	module

6 Chapter 1 Product description

Category	Description		Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
			CQ71	Notebook	G71	CQ71	Notebook	G71
			Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
			(UMA)		(UMA)	(Discrete)		(Discrete)
	Intel WiFi Link 5100		X	X	X	X	X	X
	802.11a/b/g/n
	WLAN module
	Intel WiFi Link 5100		X	X	X	X	X	X
	802.11a/b/g WLAN
	module
	Atheros AR2425		X	X	X	X	X	X
	802.11b/g WLAN
	module
	Atheros AR9280		X	X	X	X	X	X
	802.11a/g/n WLAN
	module
	Mechanical		X	X	X	X	X	X
	reserved to support
	MIMO 3x3 antennas
	in display panel
	enclosure
External	Realtek RTS5158E		X	X	X	X	X	X
media card	Digital Media Slot
	(non-push-push
	insertion/removal)
	●	Memory Stick
		(MS)
	●	Memory Stick
		Pro (MSP)
	●	MultiMedia
		Card (MMC)
	●	Secure Digital
		(SD) Memory
		Card
	●	xD Picture
		Card (XD)
Ports	Audio-out jack		X	X	X	X	X	X
	(stereo headphone)
	Audio-in jack (stereo		X	X	X	X	X	X
	microphone)
	Consumer infrared		X	X	X	X	X	X
	HDMI v1.3		X	X	X	X	X	X
	supporting 1080p
	with HDCP key

7

Category	Description		Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
			CQ71	Notebook	G71	CQ71	Notebook	G71
			Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
			(UMA)		(UMA)	(Discrete)		(Discrete)
	VGA (Dsub 15 pin)		X	X	X	X	X	X
	supporting:
	●	1920×1200
		external
		resolution at
		75 Hz
	●	1600×1200
		external
		resolution at
		75 Hz
	RJ-11 (modem)		X	X	X	X	X	X
	RJ-45 (Ethernet,		X	X	X	X	X	X
	includes link and
	activity lights)
	USB 2.0 ports on the		X	X	X	X	X	X
	computer (one USB
	port is combined
	with eSATA)
	Hot plug/unplug and		X	X	X	X	X	X
	auto detect for
	correct output to
	wide aspect vs.
	standard aspect
	video
	AC adapter plug		X	X	X	X	X	X
	(smart pin)
Docking	No docking		X	X	X	X	X	X
Keyboard/	17-inch full-size		X	X	X	X	X	X
pointing	keyboard with
devices	numeric keypad
	Synaptics		X	X	X	X	X	X
	TouchPad (supports
	2-way scroll with
	legend, taps
	enabled as default)
Power	Battery, 47-Wh, 2.2-		X	X	X	X	X	X
requirements	Ah, 6-cell Li-ion
	90-W AC adapter					X	X	X
	with localized cable
	plug support (2-wire

plug with ground pin, supports 2-pin DC connector)

8 Chapter 1 Product description

Category	Description	Presario	HP G71	Silver HP	Presario	HP G71	Silver HP
		CQ71	Notebook	G71	CQ71	Notebook	G71
		Notebook	(UMA)	Notebook	Notebook	(Discrete)	Notebook
		(UMA)		(UMA)	(Discrete)		(Discrete)
	65-W AC adapter	X	X	X
	with localized cable
	plug support (2-wire
	plug with ground pin,
	supports 2-pin DC
	connector)
Security	Kensington Security	X	X	X	X	X	X
	Lock
Operating	Preinstalled:
system
	Windows Vista®	X	X	X	X	X	X
	Business (32-bit)
	Windows Vista	X	X	X	X	X	X
	Premium (32 and
	64-bit)
	Windows Vista	X	X	X	X	X	X
	Home Basic (32-bit)
	FreeDOS	X			X
Serviceability	End-user
	replaceable parts:
	AC adapter	X	X	X	X	X	X
	Battery (system)	X	X	X	X	X	X
	Hard drive	X	X	X	X	X	X
	Memory module	X	X	X	X	X	X
	Modem module	X	X	X	X	X	X
	RTC Battery	X	X	X	X	X	X
	Optical drive	X	X	X	X	X	X
	WLAN module	X	X	X	X	X	X

9

2 External component identification

Top components

TouchPad

Component		Description
(1)	TouchPad on/off button	Enables/disables the TouchPad.
(2)	TouchPad*	Moves the pointer and selects or activates items on the screen.
(3)	Left TouchPad button*	Functions like the left button on an external mouse.
(4)	TouchPad light	● White: TouchPad is enabled.
		● Amber: TouchPad is disabled.
(5)	TouchPad scroll zone	Scrolls up or down.
(6)	Right TouchPad button*	Functions like the right button on an external mouse.

*This table describes factory settings. To view and change pointing device preferences, select Start > Control Panel > Hardware and Sound > Mouse.

10 Chapter 2 External component identification

Lights

NOTE: Your computer may look slightly different from the illustration in this section.

Component		Description
(1)	Caps lock light	On: Caps lock is on.
(2)	Power lights (2)*	●	On: The computer is on.
		●	Blinking: The computer is in the Sleep state.
		●	Off: The computer is off or in Hibernation.
(3)	Wireless light	●	Blue: An integrated wireless device, such as a wireless local
			area network (WLAN) device and/or a Bluetooth® device, is
			on.
		●	Amber: All wireless devices are off.
(4)	Num lock light	On: Num lock is on or the integrated numeric keypad is enabled.
(5)	Battery light	●	On: A battery is charging.
		●	Blinking: A battery that is the only available power source has
			reached a low battery level. When the battery reaches a
			critical battery level, the battery light begins blinking rapidly.
		●	Off: If the computer is plugged into an external power source,
			the light is turned off when all batteries in the computer are
			fully charged. If the computer is not plugged into an external

power source, the light stays off until the battery reaches a low battery level.

Top components 11

Component		Description
(6)	Drive light	Blinking: The hard drive or optical drive is being accessed.

*The 2 power lights display the same information. The light on the power button is visible only when the computer is open. The power light on the front of the computer is visible whether the computer is open or closed.

12 Chapter 2 External component identification

Buttons and speakers

NOTE: Your computer may look slightly different from the illustration in this section.

Component		Description
(1)	Speakers (2)	Produce sound.
(2)	Power button*	● When the computer is off, press the button to turn on the
		computer.
		● When the computer is on, press the button briefly to initiate
		Sleep.
		● When the computer is in the Sleep state, press the button
		briefly to exit Sleep.
		● When the computer is in Hibernation, press the button briefly
		to exit Hibernation.
		If the computer has stopped responding and Windows® shutdown
		procedures are ineffective, press and hold the power button for at
		least 5 seconds to turn off the computer.
		To learn more about your power settings, select Start > Control
		Panel > System and Maintenance > Power Options.
(3)	Wireless button	Turns the wireless feature on or off but does not create a wireless
		connection.

NOTE: To establish a wireless connection, a wireless network must already be set up.

*This table describes factory settings. For information about changing factory settings, refer to the user guides located in Help and Support.

Top components 13

Keys

NOTE: Your computer may look slightly different from the illustration in this section.

Component		Description
(1)	esc key	Displays system information when pressed in combination with
		the fn key.
(2)	fn key	Executes frequently used system functions when pressed in
		combination with a function key or the esc key.
(3)	Windows logo key	Displays the Windows Start menu.
(4)	Function keys	Execute frequently used system functions when pressed in
		combination with the fn key.
(5)	Windows applications key	Displays a shortcut menu for items beneath the pointer.
(6)	Integrated numeric keypad and volume hotkeys	● Can be used like the keys on an external numeric keypad.
		● Adjusts system volume when the asterisk (*), minus sign (-),
		or plus sign (+) is pressed in combination with the fn key.

14 Chapter 2 External component identification

Front components

Component		Description
(1)	Audio-in (microphone) jack	Connects an optional computer headset microphone, stereo array
		microphone, or monaural microphone.
(2)	Audio-out (headphone) jack	Produce sound when connected to optional powered stereo
		speakers, headphones, ear buds, a headset, or television audio.

Right-side components

NOTE: Your computer may look slightly different from the illustration in this section.

Component		Description
(1)	Optical drive	Reads optical discs and, on select models, also writes to optical
		discs.
(2)	Optical drive light	Blinking: The optical drive is being accessed.
(3)	USB ports (2)	Connect optional USB devices.
(4)	RJ-11 (modem) jack (select models only)	Connects a modem cable.
(5)	AC adapter light	● On: The computer is connected to external power.
		● Off: The computer is not connected to external power.
(6)	Power connector	Connects an AC adapter.

Front components 15

Left-side components

NOTE: Your computer may look slightly different from the illustration in this section.

Component		Description
(1)	Security cable slot	Attaches an optional security cable to the computer.
		NOTE: The security cable is designed to act as a deterrent, but
		it may not prevent the computer from being mishandled or stolen.
(2)	Vent	Enables airflow to cool internal components.
		NOTE: The computer fan starts up automatically to cool internal
		components and prevent overheating. It is normal for the internal
		fan to cycle on and off during routine operation.
(3)	External monitor port	Connects an external VGA monitor or projector.
(4)	RJ-45 (network) jack	Connects a network cable.
(5)	HDMI port (select models only)	Connects an optional video or audio device, such as a high-
		definition television, or any compatible digital or audio component.
		NOTE: Depending on your computer model, the computer may
		include an HDMI port or a USB port at this location.
(6)	eSATA/USB port	Connects a high-performance eSATA component, such as an
		eSATA external hard drive, or connects an optional USB device.
(7)	Digital Media Slot (select models only)	Supports the following digital card formats:
		●	Memory Stick (MS)
		● Memory Stick Pro (MSP)
		●	MultiMediaCard (MMC)
		● Secure Digital (SD) Memory Card
		● xD-Picture Card (XD)
(8)	Digital Media Slot light	On: The Digital Media Slot is in use.

16 Chapter 2 External component identification

Rear component

Component	Description
Vent	Enables airflow to cool internal components.
	NOTE: The computer fan starts up automatically to cool internal
	components and prevent overheating. It is normal for the internal fan to
	cycle on and off during routine operation.

Rear component 17

Bottom components

Component		Description
(1)	Battery bay	Holds the battery.
(2)	Battery release latch	Releases the battery from the battery bay.
(3)	Vents (5)	Enable airflow to cool internal components.
		NOTE: The computer fan starts up automatically to cool internal
		components and prevent overheating. It is normal for the internal
		fan to cycle on and off during routine operation.
(4)	Wireless module compartment	Holds a wireless LAN module.
		NOTE: To prevent an unresponsive system, replace the wireless
		module only with a wireless module authorized for use in the
		computer by the governmental agency that regulates wireless
		devices in your country or region. If you replace the module and
		then receive a warning message, remove the module to restore
		computer functionality, and then contact technical support through
		Help and Support.
(5)	Hard drive bay	Holds the hard drive and contains the memory module slots.

18 Chapter 2 External component identification

Display components

Component		Description
(1)	Internal display switch	Turns off the display and initiates Sleep if the display is closed while
		the power is on.
(2)	Webcam light (select models only)	On: The webcam is in use.
(3)	Webcam (select models only)	Records audio and video and captures still photographs.
(4)	Internal microphone	Records sound.

Display components 19

Wireless antennas

Your computer model has at least 2 antennas that send and receive signals from one or more wireless devices.

NOTE: The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around the antennas free from obstructions.

To see wireless regulatory notices, refer to the section of the Regulatory, Safety, and Environmental Notices that applies to your country or region. These notices are located in Help and Support.

20 Chapter 2 External component identification

Additional hardware components

Component		Description
(1)	Power cord*	Connects an AC adapter to an AC outlet.
(3)	AC adapter	Converts AC power to DC power.
(3)	Battery*	Powers the computer when the computer is not plugged into
		external power.

*Batteries and power cords vary in appearance by region and country.

Additional hardware components 21

3 Illustrated parts catalog

Service tag

When ordering parts or requesting information, provide the computer serial number and model description provided on the service tag.

(1)Product name: The product name affixed to the front of the computer.

(2)Serial number (s/n): An alphanumeric identifier that is unique to each product.

(3)Part number/product number (p/n): The number that identifies the product and its internal components. This number is required when replacement parts are ordered.

(4)Model description: An alphanumeric identifier used to locate, documents, drivers and support for your computer.

(5)Warranty period: The duration of the warranty period for this computer.

22 Chapter 3 Illustrated parts catalog