HP PAVILION 311 Manual

HP Pavilion dm1
HP Mini 311
Compaq Mini 311
Maintenance and Service Guide
Document Part Number: 574404-002
October 2009
This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides
comprehensive information on identifying computer features, components, and spare parts; troubleshooting
computer problems; and performing computer disassembly procedures.

© 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, Atom, Celeron, and
Pentium are trademarks of Intel Corporation in the U.S. and other countries. Microsoft and Windows 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.
Second Edition: October 2009
First Edition: September 2009
Document Part Number: 574404-002

Safety warning notice
ÅWARNING: 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).

Maintenance and Service Guide iv
Contents
1 Product description
2 External component identification
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Display components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Wireless antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Top components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
Pointing devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
Front components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7
Right-side components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–8
Left-side components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
Bottom components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
3 Illustrated parts catalog
Service tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
Computer major components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
Display assembly subcomponents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–9
Miscellaneous parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–10
Sequential part number listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11
4 Removal and replacement procedures
Preliminary replacement requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
Tools required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
Service considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
Grounding guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2
Component replacement procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
Service tag. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
Computer feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–6
Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–7
SIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–8
WLAN module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–9
WWAN module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–13
RTC battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–15
Expansion memory module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–16
Hard drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–18
Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–21
Top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–24
Wireless button board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–27
Power button board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–28

vMaintenance and Service Guide
Contents
Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–29
Digital media assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–30
Display assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–31
Multi board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–37
System board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–38
Power connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–41
Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–42
Heat sink assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–43
5 Setup Utility
Starting Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
Using Setup Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
Changing the language of Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
Navigating and selecting in Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
Displaying system information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
Restoring factory settings in Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
Exiting Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
Setup Utility menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3
Main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3
Security menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3
Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3
System Configuration menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4
6 Specifications
Computer specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1
11.6-in display specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2
Hard drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–3
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe specifications. . . . . . 6–4
Blu-ray ROM with LightScribe DVD±R/RW SuperMulti Double-Layer Drive specifications . . . . . . . . . 6–5
System DMA specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–6
System memory map specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–6
System interrupt specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–7
System I/O address specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–8
7 Screw listing
Phillips PM2.0×4.0 screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–2
Phillips PM2.0×5.0 screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–6
Phillips PM2.0×6.0 captive screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–7
Phillips PM2.0×7.0 screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–10
Phillips PM2.0×12.0 screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–13
Phillips PM3.0×4.0 screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–14
8 Backup and recovery
Backup and recovery in Windows 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–1
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–1
Creating recovery discs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–2
Backing up your information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–2
Performing a recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–4
Backup and recovery in Windows XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–5
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–5

Contents
Maintenance and Service Guide vi
Backing up your information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–5
Performing a recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–6
9 Connector pin assignments
Audio-out (headphone)/Audio-in (microphone) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–1
External monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–2
HDMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–3
RJ-45 (network) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–4
Universal Serial Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–4
10Power cord set requirements
Requirements for all countries and regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–1
Requirements for specific countries and regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–2
11Recycling
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11–1
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11–1
Index

vii Maintenance and Service Guide
Contents

Maintenance and Service Guide 1–1
1
Product description
Category Description HP Mini 311 Compaq Mini 311 HP Pavilion dm1
Processors Intel®Atom™ N280 1.66-GHz, 512-KB L2
cache, 667-MHz front-side bus (FSB)
99
Intel Atom N270 1.60-GHz, 512-KB L2
cache, 533-MHz front-side bus (FSB)
99
Intel Pentium®SU4100 1.3-GHz, 2048-KB
L2 cache, 800-MHz front-side bus (FSB)
9
Intel Mobil Celeron®SU2300 1.2-GHz,
1024-KB L2 cache, 800-MHz front-side
bus (FSB)
9
Chipset MCP79 99
Intel GS45 (8W) 9
Southbridge ICH9M 9
Graphics nVidia ION (Windows 7 only) 99
nVidia ION LE (Windows XP only) 99
Intel UMA graphics (Mobile Intel GMA
X4500 HD) Integrated with shared video
memory:
999
■Up to 270-MB for 1024-MB
system RAM
9
■Up to 319-MB for 1024-MB
system RAM
99
■Up to 782-MB for 2048-MB
system RAM
9
■Up to 895-MB for 2048-MB
system RAM
99
■Up to 1294-MB for 3072-MB
system RAM
9
■Up to 1294-MB for 4096-MB
system RAM (32 bit OS)
9
■Up to 1407-MB for 3072-MB
system RAM
99
■Up to 1759-MB for 4096-MB
system RAM (64 bit OS)
9
Support for BD and HD-DVD playback
with HD decode and DX10.1 support
9
(Continued)

1–2 Maintenance and Service Guide
Product description
Panel 11.6-in (1366 ×768) HD, BrightView, LED
display assembly, supports privacy filter
999
Memory 1024-MB on-board memory and one
customer-accessible/upgradable memory
module slot
Supports dual-channel memory
Supports the following DDR3
configurations at 1333 MHz:
999
■5120-MB total system memory (1024
on-board memory + 4096, dual
channel)
9
■3072-MB total system memory (1024
on-board memory + 2048,
dual-channel)
999
■2048-MB total system memory (1024
on-board memory + 1024,
dual-channel)
999
■1024-MB total system memory (1024
on-board memory, dual-channel)
999
Supports the following DDR3
configurations at 1066 MHz:
■5120-MB total system memory (1024
on-board memory + 4096, dual
channel)
9
■3072-MB total system memory (1024
on-board memory + 2048,
dual-channel)
999
■2048-MB total system memory (1024
on-board memory + 1024,
dual-channel)
999
■1024-MB total system memory (1024
on-board memory, dual-channel)
Solid-state drive Supports 80-GB solid-state drive 999
Hard drives Supports 9.50-mm, 6.35-cm (2.50-in)
hard drives
Supports HP ProtectSmart
Hard Drive Protection
Customer-accessible
Serial ATA (SATA)
999
Supports the following hard drives:
■500-GB, 5400-rpm 9
■320-GB, 5400-rpm (Windows 7 only) 999
■250-GB, 5400-rpm (Windows 7 only) 999
■160-GB, 7200-rpm 999
■160-GB, 5400-rpm 999
(Continued)
Category Description HP Mini 311 Compaq Mini 311 HP Pavilion dm1

Product description
Maintenance and Service Guide 1–3
Optical drives 12.7-mm tray load external USB optical
drive
Serial ATA (SATA)
Customer-accessible
Supports no-optical-drive option
999
Supports the following drives:
■Blu-ray ROM with LightScribe
DVD±R/RW and CD-RW SuperMulti
Double-Layer Drive
999
■DVD±RW and CD-RW SuperMulti
Double-Layer Drive with LightScribe
999
Diskette drive Supports external USB drive only
Supports boot from USB device
999
Microphone Integrated dual-array digital microphone 999
Audio 2 integrated HD stereo speakers
Headphone jack
Microphone jack
999
Webcam Integrated 2.8-megapixel camera with
fixed focus
999
Modem Supports external USB modem option 999
Ethernet Integrated Realtek10/100 network
interface card (NIC)
Ethernet cable not included
999
(Continued)
Category Description HP Mini 311 Compaq Mini 311 HP Pavilion dm1

1–4 Maintenance and Service Guide
Product description
Wireless Integrated wireless local-area network
(WLAN) options through Mini PCI module:
999
■802.11a/b/g/n WLAN module 999
■802.11a/b/g/n WLAN/ Bluetooth®
combo module
999
■802.11b/g WLAN module 999
■802.11b/g WLAN/ Bluetooth combo
module
9
Supports no-WLAN option 999
2 WLAN antennas built into the display
assembly
999
Integrated wireless wide-area network
(WWAN) option through Mini PCI module:
WWAN security provided by subscriber
identity module (SIM), user-accessible
behind battery
2 WWAN antennas (worldwide, 5-band)
built into the display assembly
Does not support WWAN aftermarket
option
999
Integrated wireless personal area network
(WPAN) options through Bluetooth®
module
999
External media
cards
One ExpressCard slot, supporting optional
ExpressCard/34 cards
Digital Media Slot supporting the following
optional digital card formats:
■Memory Stick (MS)
■Memory Stick Pro (MS/Pro)
■MultiMediaCard (MMC)
■Secure Digital High Capacity (SDHC)
Memory Card
■xD-Picture Card (XD)
999
Ports Audio-in (stereo microphone)/Audio-out
(stereo headphone)
HDMI v.1.3
AC power
RJ-45 (Ethernet, includes link and activity
lights)
USB v. 2.0 (3)
VGA (Dsub 15-pin) supporting 1600 ×
1200 external resolution at 75 GHz
999
Keyboard/
pointing devices
Spill-resistant keyboard
TouchPad with TouchPad buttons
Touch-sensitive controls
Supports 2-way scroll with legend
Taps enabled by default
999
Power
requirements
65-W AC adapter
6-cell, 2.55-Ah (55-Wh) Li-ion battery
999
(Continued)
Category Description HP Mini 311 Compaq Mini 311 HP Pavilion dm1

Product description
Maintenance and Service Guide 1–5
Security Security cable slot 999
Operating system Preinstalled:
■Free DOS (Windows 7 only) 999
■Windows® 7 Professional 32 99
■Windows 7 Premium 32 999
■Windows 7 Basic 32 999
■Windows 7 Starter 32 99
■Free DOS (Windows XP only)
■Windows XP Home Service Pack 3 for
ULCPC Program
99
■Back on Track 9
Serviceability End-user replaceable parts:
AC adapter
Battery (system)
Hard drive
Memory modules
SIM
WLAN module
WWAN module
999
Category Description HP Mini 311 Compaq Mini 311 HP Pavilion dm1

1–6 Maintenance and Service Guide
Product description

Maintenance and Service Guide 2–1
2
External component identification
Display
Display components
Item Component Description
(1) Internal display switch Turns off the display if the display is closed while the power is on.
(2) Webcam light On: The webcam is in use.
(3) Webcam Captures still photographs and videos.
✎To capture videos, you must install additional webcam software.
(4) Internal microphone Records sound.

2–2 Maintenance and Service Guide
External component identification
Wireless antennas
✎Your computer may look slightly different from the illustration in this section.
To see wireless regulation 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.
Item Component Description
(1) WLAN antennas (2)* Send and receive wireless signals to communicate with wireless local area
networks (WLAN).
(2) WWAN antennas (2)*
(select models only)
Send and receive wireless signals to communicate with wireless wide-area
networks (WWAN).
*The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around
the antennas free from obstructions.

External component identification
Maintenance and Service Guide 2–3
Top components
Buttons
Item Component Description
(1) 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 the Sleep state
or Standby.
■When the computer is in the Sleep state or Standby, press the button
briefly to exit.
■When the computer is in Hibernation, press the button briefly to exit
Hibernation.
If the computer has stopped responding and operating system shutdown
procedures are ineffective, press and hold the power button for at least
5 seconds to turn off the computer.
✎This describes factory settings. For information about changing factory
settings, refer to the user guides located in Help and Support.
(2) Wireless button Turns the wireless feature on or off but does not create a wireless connection.
✎To establish a wireless connection, a wireless network must already be
set up.

2–4 Maintenance and Service Guide
External component identification
Keys
✎Your computer may look slightly different from the illustration in this section.
Item 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) Windows applications key Displays a shortcut menu for items beneath the pointer.
(5) Function keys Execute frequently used system functions when pressed in combination with
the fn key.

External component identification
Maintenance and Service Guide 2–5
Lights
Item Component Description
(1) Caps lock light On: Caps lock is on.
(2) Power light ■On: The computer is on.
■Blinking: The computer is in the Sleep state or Standby.
■Off: The computer is off or in Hibernation.
(3) Wireless light ■On: An integrated wireless device, such as a wireless local area network
(WLAN) device and/or a Bluetooth® device, is on.
■Off: All wireless devices are off.

2–6 Maintenance and Service Guide
External component identification
Pointing devices
Item Component Description
(1) TouchPad* Moves the pointer and selects or activates items on the screen.
(2) Left TouchPad button* Functions like the left button on an external mouse.
(3) Right TouchPad button* Functions like the right button on an external mouse.
(4) TouchPad scroll zone Scrolls up or down.
*This table describes factory settings.