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Compaq 420 - Notebook PC Manual
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- Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 1
Compaq 320 Notebook PC Compaq 321 Notebook PC Compaq 420 Notebook PC Compaq 421 Notebook PC Compaq 620 Notebook PC Compaq 621 Notebook PC HP 420 Notebook PC HP 620 Notebook PC Maintenance and Service Guide - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 2
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 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 3
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 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 4
iv Safety warning notice - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 5
...18 Bottom components ...19 Multimedia components ...20 Wireless antennas (select models only 22 Additional hardware components 23 3 Illustrated parts catalog 24 Service tag ...24 Computer major components 26 Display assembly components 32 Plastics Kit ...33 Cables ...34 Mass storage devices - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 6
68 Keyboard ...73 Top cover ...77 Power switch board 82 Bluetooth module ...84 USB connector assembly 85 Speaker ...87 Display assembly ...88 System board ...96 Main battery connector 100 RTC battery ...102 Modem module ...103 Audio board ...105 5 Computer Setup ...107 Computer Setup in Windows - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 7
119 System Configuration menu 120 6 Specifications ...122 Computer specifications ...122 39.6-cm (15.6-in) display specifications 123 35.6-cm (14.0-in) display specifications 125 33.8-cm (13.3-in) display specifications 126 Hard drive specifications ...127 DVD-ROM Drive specifications 128 DVD - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 8
External monitor ...142 HDMI ...143 RJ-11 (modem) ...144 RJ-45 (network) ...145 Universal Serial Bus ...145 9 Power cord set requirements 146 Requirements for all countries and regions 146 Requirements for specific countries and regions 147 10 Recycling ...148 Battery ...148 Display ...148 Index - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 9
chipset Discrete graphics, PM45 chipset Compaq 320 Notebook PC • • Compaq 321 Notebook PC • Compaq 420 Notebook PC • • Compaq 421 Notebook PC • Compaq 620 Notebook PC • • Compaq 621 Notebook PC • HP 420 Notebook PC • • HP 620 Notebook PC • • Intel® Celeron® processors T3300 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 10
graphics subsystem integrated with shared video memory (dynamically allocated) ATI Mobility Radeon HD 530v with 512-MB memory All display assemblies support privacy filter 33.8-cm (13.3-in) HD LED backlight panel: ● 1366×768 AntiGlare ● 1366×768 AntiGlare for webcam ● 1366×768 BrightView ● 1366×768 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 11
768 BrightView ● 1366×768 BrightView for Webcam 2 customer-accessible/upgradable memory • • • module slots Supports dual-channel memory • • • Supports up to 4 GB of system RAM • • • PC3-10600, 1333-MHz, DDR3 • • • Supports the following configurations in all • • • countries and - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 12
Audio/Visual Modem Ethernet Description Supports the following drives: ● 500-GB, 7200-rpm ● 500-GB, 5400-rpm ● 320-GB, 7200-rpm ● 320-GB, 5400-rpm ● 250-GB, 7200-rpm ● 250-GB, 5400-rpm ● 160-GB, 7200-rpm ● 160-GB, 5400-rpm HP Ethernet network interface card (NIC) UMA graphics, GL40 chipset UMA - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 13
) Memory Card, MultiMediaCard (MMC) formats Audio-in (microphone) • • • Audio-out (stereo headphone) • • • RJ-11 (modem) • • • RJ-45 (Ethernet, includes link and activity • • • lights) USB 2.0 (3) • • • HP non-Smart adapter • • • VGA (Dsub 15-pin) supporting 1600 × 1200 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 14
devices 35.6-cm (14.0-in)/33.8-cm (13.3-in) • • • keyboard with TouchPad Suports 2-way scroll with legend and gestures • • • (taps enabled as default) Power 65-W non-Smart AC adapter with localized • • requirements cable plug support (3-wire plug with ground pin) 90-W non-Smart AC - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 15
Home Premium with Office 2007 • • • ready - EDGI Windows 7 Professional 32 with Office 2007 • • • ready - EDGI Windows 7 Professional 32 with XP Pro • • • images with Office 2007 ready (excludes Japan) Windows 7 Professional 32 with XP Pro • • • images with Office 2007 ready - EDGI - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 16
's Republic of China only) DRDVD Windows Vista DRDVD Windows XP Pro Windows Vista Office Ready DVD Certified: Microsoft® WHQL SuSE Linux Web Support: All Windows Vista 64 versions Windows 7 Professional 64 versions SuSE Linux End-user replaceable parts: AC adapter Battery (system) Hard drive UMA - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 17
Category Description Memory module Keyboard Optical drive WLAN module UMA graphics, GL40 chipset UMA graphics, GM45 chipset Discrete graphics, PM45 chipset • • • • • • • • • • • • 9 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 18
2 External component identification Top Components TouchPad Component (1) TouchPad * (2) TouchPad button (3) TouchPad scroll zone Description Moves the pointer and selects or activates items on the screen. The left and right sides of the single button function like the left and right buttons on an - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 19
Lights NOTE: Refer to the illustration that most closely matches your computer. Component (1) Caps lock light Description On: Caps lock is on. Top Components 11 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 20
Power light (3) Wireless light Description ● On: The computer is on. ● Blinking: The computer is in the Suspend state. ● Off: The computer is off or in Hibernation. ● White: An integrated wireless device, such as a wireless local area network (WLAN) device is on. ● Amber: All wireless devices are - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 21
, and speaker Component (1) Speaker (2) Internal display switch (3) Power button Description Produces sound. Turns off the display if the panel lid is closed while the power is on. ● When the computer is off, press the button to turn on the computer. ● When the computer is on, press the button to - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 22
Keys Component (1) esc key (2) fn key (3) Wireless key (4) Function keys (5) Embedded numeric keypad keys Description Displays system information when pressed in combination with the fn key. Executes frequently used system functions when pressed in combination with a function key, the num lk - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 23
Component (1) esc key (2) fn key (3) Function keys (4) Embedded numeric keypad keys (5) Wireless key Description Displays system information when pressed in combination with the fn key. Executes frequently used system functions when pressed in combination with a function key, the num lk - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 24
Speed (SDHS) Memory Card Produces sound when connected to optional powered stereo speakers, headphones, ear buds, a headset, or television audio. NOTE: When a device is connected to the headphone jack, the computer speakers are disabled. Connects an optional computer headset microphone, stereo array - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 25
Component (4) Optical drive light (select models only) (5) Optical drive button (select models only) Description Blinking: The optical drive is being accessed. Opens the optical drive tray. Right-side components 17 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 26
slot (2) Security cable slot (3) Vent (4) External monitor port (5) Battery light (6) Power connector (7) RJ-45 (network) jack (8) HDMI port (9) USB port (1) Description Supports optional ExpressCards. Attaches an optional security cable to the computer. NOTE: The security cable is designed to act - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 27
Bottom components Component (1) Battery release latches (2) (2) Battery bay Description Release the battery from the battery bay. Holds the battery. Bottom components 19 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 28
the memory module slot. Contains the wireless LAN module slot. CAUTION: To prevent an unresponsive system and the display of a warning message, replace the WLAN module with only a module authorized for use in the computer by the governmental agency that regulates wireless devices in your country. If - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 29
array microphone, or monaural microphone. Produces sound when connected to optional powered stereo speakers, headphones, ear buds, a headset, or television audio. NOTE: When a device is connected to the headphone jack, the computer speakers are disabled. Produces sound. Multimedia components 21 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 30
and Support. Component Description (1) WWAN antennas (2)* (select models only) Send and receive wireless signals to communicate with wireless wide- of the computer. For optimal transmission, keep the areas immediately around the antennas free from obstructions. To see wireless regulatory notices - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 31
hardware components Component Description (1) Power cord* Connects an AC adapter to an AC outlet. (2) Battery* Powers the computer when the computer is not plugged into external power. (3) AC adapter Converts AC power to DC power. *Batteries and power cords vary in appearance by country or - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 32
This number provides specific information about the product's hardware components. The part number helps a service technician to determine what components and parts are needed. (4) Model description: This is the alphanumeric identifier used to locate documents, drivers, and support for your computer - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 33
Service tag 25 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 34
Computer major components 26 Chapter 3 Illustrated parts catalog - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 35
(1366×768 resolution) 605811-001 33.8-cm (13.3-in) HD BrightView display assembly for use in computers with WLAN and webcam (1366×768 resolution) 605812-001 (2) Keyboard NOTE: For a detailed list of available keyboards, see Sequential part number listing on page 39. For use in 33.8-cm (13 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 36
for Compaq 39.6-cm (15.6-in) computers 605778-001 (6) Heat sink For use in computers with UMA graphics subsystems 605749-001 For use in computers with discrete graphics subsystems 605750-001 (7) Fan 605791-001 (8) Power switch board 605794-001 (9) System board (includes RTC battery - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 37
Bluetooth module 537921-001 HP Integrated module with Bluetooth 2.1 wireless Audio board 605797-001 (19) Base enclosure For use in 33.8-cm (13.3-in) computers 605771-001 For use in 35.6-cm (14.0-in) computers 605772-001 For use in 39.6-cm (15.6-in) computers 605773-001 (20) Battery - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 38
4313AGN 802.11a/b/g/draft-n WiFi Adapter 593836-001 Broadcom 4312G 802.11b/g WiFi adapters: ● For use in Antigua , Papua New Guinea, Paraguay, Peru, the Philippines, Poland, Portugal, the Republic of Moldova, Honduras, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Ivory - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 39
RTL8191SE 802.11b/g/n WiFi Adapter for use in all countries and regions (23) Hard drive (includes hard drive bracket) 500-GB, 7200-rpm 500-GB, 7200-rpm for use in 39.6-cm (15.6-in) computers 320-GB, 7200-rpm 320-GB, 7200-rpm for use in 39.6-cm (15.6-in) computers 250-GB, 7200 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 40
LCD bezel with webcam HP 39.6-cm (15.6-in) LCD bezel without webcam HP 39.6-cm (15.6-in) LCD bezel with webcam Compaq 39.6-cm (15.6-in) LCD bezel without webcam Compaq 39.6-cm (15.6-in) LCD bezel with webcam Display Hinge Kit Hinge Kit for 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computers Hinge Kit - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 41
cable LCD cable with webcam LCD cable without webcam Microphone cable Display enclosure For use in Compaq 33.8-cm (13.3-in) computers For use in HP 35.6-cm (14.0-in) computers For use in Compaq 35.6-cm (14.0-in) computers For use in HP 39.6-cm (15.6-in) computers For use in Compaq 39.6-cm (15.6-in - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 42
Item (1) (2) Description Plastics Kit: Dummy ExpressCard Dummy optical drive Cables Spare part number 605786-001 Item Description Cable Kit , includes: (1) Bluetooth cable (2) RJ-11 cable (3) Main battery connector 34 Chapter 3 Illustrated parts catalog Spare part number 605793-001 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 43
Item Description (1) WLAN transceiver with cable (2) Microphone cable (3) LCD Cable Kit LCD Cable without webcam ( not shown) LCD Cable with webcam cable (4) USB cable Spare part number spared with display assembly spared with display assembly 605766-001 605767-001 605796-001 Cables 35 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 44
Description (1) Hard drive (includes bracket) 500-GB, 7200-rpm 500-GB, 7200-rpm for use in 39.6-cm (15.6-in) computers 320-GB, 7200-rpm 320-GB, 7200-rpm for use in 39.6-cm (15.6-in) computers 250-GB, 7200-rpm 250-GB, 7200-rpm for use in 39.6-cm (15.6-in - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 45
Description AC adapters 65-W AC adapter EM 65W AC adapter 90W PFC AC adapter EM 90W PFC AC adapter Power cords For use in Argentina For use in Australia and New Zealand For use in Brazil For use in Denmark For use in Europe, the Middle East, and Africa For use in India For use in - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 46
Description For use in 33.8-cm (13.3-in) and 35.6-cm (14.0-in) computers For use in 39.6-cm (15.6-in) computers Spare part number 605789-001 608931-001 38 Chapter 3 Illustrated parts catalog - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 47
449137-001 RTC battery 463958-001 65-W AC adapter for use in computers with UMA , Haiti, Honduras, Hong Kong, Hungary, Iceland, India, Ireland, Israel, Italy, the Ivory Coast, Jamaica , Panama, Papua New Guinea, Paraguay, Peru, the Philippines, Poland, Portugal, the Republic of Moldova, Romania, - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 48
Realtek RTL8191SE 802.11b/g/n WiFi Adapter 593572-001 Battery, 6-cell, 47 Wh, 2.2 Ah for use in computers with 15.6-in displays 593573-001 Battery, 9-cell, 93 Wh, 2.8 Ah for use in computers with 15.6-in displays 593836-001 Broadcom 4313AGN 802.11a/b/g/draft-n WiFi Adapter 598856-001 2-GB (PC3 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 49
(14.0-in) display enclosure 605764-001 HP 39.6-cm (15.6-in) display enclosure 605765-001 Compaq 39.6-cm (15.6-in) display enclosure 605766-001 LCD cable without webcam 605767-001 LCD cable with webcam 605768-001 Hinge Kit for 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computers 605769-001 Hinge - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 50
and cable) 605782-001 Palm rest with TouchPad for HP 39.6-cm (15.6-in) computers (does not include TouchPad board and cable) 605783-001 Palm rest with TouchPad for Compaq 39.6-cm (15.6-in) computers (does not include TouchPad board and cable) 605784-001 Service door for 33.8-cm (13.3-in) and - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 51
-001 33.8-cm (13.3-in) HD BrightView display assembly for use in computers with WLAN but without webcam (1366×768 resolution) 605812-001 33.8-cm (13.3-in) HD BrightView display assembly for use in computers with WLAN and webcam (1366×768 resolution) 605813-001 Keyboard for 35.6-cm (14.0-in) and 33 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 52
39.6-cm (15.6-in) computers for use in Germany 605814-051 Keyboard for 39.6-cm (15.6-in)) computers for use in France 605814-061 Keyboard for 39.6-cm (15.6-in) computers for use in Italy 605814-071 Keyboard for 39.6-cm (15.6-in) computers for use in Spain 605814-081 Keyboard for 39.6-cm (15.6-in - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 53
in 35.6-cm (14-in) computers 608149-001 Display panel BrightView with webcam for use in 35.6-cm (14-in) computers 608931-001 Rubber Kit for 39.6-cm (15.6-in) computers 609939-001 65W AC adapter 609947-001 90W PFC AC adapter EM 609948-001 65W AC adapter EM 611026-001 Webcam 611027-001 250-GB - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 54
P0 and P1 screwdrivers ● Torx T8 screwdriver Service considerations The following sections include some of the procedures. NOTE: As you remove each subassembly from the computer, place the subassembly (and all accompanying screws) away from instructions. 46 Chapter 4 Removal and replacement procedures - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 55
servicing the computer, be sure that cables are placed in their proper locations during the reassembly process. Improper cable placement can damage the computer a hard drive to products that have magnetic fields, such as monitors or speakers. Avoid exposing a drive to temperature extremes or liquids. - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 56
may function normally for a while, then degrade in the internal layers, reducing its life expectancy. CAUTION: To prevent damage to the computer when you are removing or installing internal components, observe these precautions: Keep components in their electrostatic-safe containers until you are - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 57
material. ● Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment. ● Use conductive field service tools, such as cutters, screwdrivers, and vacuums. ● When fixtures must directly contact dissipative surfaces, use fixtures made only of static - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 58
with ground cords of one megohm resistance ● Static-dissipative tables or floor mats with hard ties to the ground ● Field service kits ● Static awareness labels ● Material-handling packages ● Nonconductive plastic bags, tubes, or boxes ● Metal tote boxes ● Electrostatic voltage levels and - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 59
specific information about the product's hardware components. The part number helps a service technician to determine what components and parts are needed. (4) Model description: This is the alphanumeric identifier used to locate documents, drivers, and support for the computer. (5) Warranty - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 60
included in the Rubber Kit, spare part number 605789-001 for 33.8-cm (13.3-in) and 35.6-cm (14.0-in) computers and in Rubber Kit 608931-001 for 39.6-cm (15.6-in) computers. There are 4 rubber feet that attach to the base enclosure in the locations illustrated below. 52 Chapter 4 Removal and - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 61
then unplugging the AC adapter from the computer. Remove the battery: 1. Turn the computer upside down on a flat surface with the battery bay toward you. 2. Slide the battery release latches (1) to release the battery. 3. Remove the battery (2) from the computer. Install the battery by inserting it - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 62
outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). Remove the service door on a 39.6-cm (15.6-in) computer: 1. Remove four Phillips PM2.0×3.0 screws (1) that secure the service door to the computer. 2. Slide the service door (2) away from the - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 63
2. Slide the service door (2) away from the computer. Reverse this procedure to install the switch cover. Component replacement procedures 55 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 64
from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). Remove the hard drive from a 39.6-cm (15.6-in) computer: 1. Position the computer right-side up with the front toward you - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 65
side up with the front toward you. 2. Remove the two Phillips PM2.5×6.0 screws (1) and the Phillips PM2.5×4.0 screw (2) that secure the hard drive to the computer. 3. Grasp the mylar tab on the hard drive and slide the hard drive (3) to the right to disconnect it from the system board. 4. Remove the - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 66
To remove the hard drive bracket, follow these steps: 1. If it is necessary to replace the hard drive bracket, remove the two Phillips PM3.0×4.0 hard drive bracket screws (1) from each side of the hard drive. 2. Lift the bracket (2) straight up to remove it from the hard drive. Reverse this - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 67
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). Remove the memory module: 1. Position the computer right-side up with the front toward you. 2. Spread the - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 68
3. Remove the memory module (2) by pulling the module away from the slot at an angle. NOTE: Memory modules are designed with a notch to prevent incorrect insertion into the memory module slot. Reverse this procedure to install a memory module. 60 Chapter 4 Removal and replacement procedures - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 69
, Hong Kong, Hungary, Iceland, India, Ireland, Israel, Italy, the New Guinea, Paraguay, Peru, the Philippines, Poland, Portugal, the Republic of WiFi Adapter 593836-0001 Atheros 9285G 802.11 b/g/n WiFi Adapter for use in all countries and regions 605560-005 Realtek RTL8191SE802.11 b/g/n WiFi - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 70
by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). Remove the WLAN module: 1. Disconnect the WLAN antenna cables (1) from the terminals - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 71
power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). Remove the optical drive: 1. Position the computer with the right side toward you. 2. Remove the Phillips PM2 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 72
power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). Remove the fan: 1. Position the computer upside down with the front toward you. 2. Disconnect the fan cable - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 73
from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the fan (see Fan on page 64). Remove the heat sink on computers with UMA graphics subsystems: 1. Position the - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 74
it from the system board components and then remove the heat sink (4) from the system board. Remove the heat sink on computers with discrete graphics subsystems: 1. Position the computer right-side up with the front facing you. 2. Following the sequence stamped into the heat sink, loosen the captive - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 75
by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the fan (see Fan on page 64). 7. Remove the heat sink (see Heat sink - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 76
rest Description Palm rest for Compaq units with 39.6-cm (15.6-in) displays (includes TouchPad) Palm rest for Compaq brand units with 35.6-cm (14-in) displays (includes TouchPad) Palm rest for Compaq brand units with 33.8-cm (13.3-in) displays (includes TouchPad) Palm rest for HP brand units with 39 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 77
the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). Remove the palm rest on 39.6-cm (15.6-in) computers: 1. Position the computer upside down with the front toward you. 2. Remove - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 78
4. Release the ZIF connector (1) to which the TouchPad cable is connected, and then disconnect the cable (2) from the system board. 5. Remove the palm rest. Remove the palm rest on 35.6-cm (14-in) or 33.8-cm (13.3-in) computers: 1. Position the computer upside down with the front toward you. 2. - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 79
palm rest to the right (2) to release it from the computer. 4. Release the ZIF connector (1) to which the TouchPad cable is connected, and then disconnect the cable (2) from the system board. 5. Remove the palm rest. Remove the TouchPad board: 1. Lay the palm rest on a protected surface upside-down - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 80
3. Remove the single screw (1) that secures the TouchPad board to the palm rest and lift the TouchPad board (2) from the palm rest. Reverse this procedure to install the TouchPad board. Reverse this procedure to install the palm rest. 72 Chapter 4 Removal and replacement procedures - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 81
unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the palm rest (see Palm rest on page 68). Remove the keyboard on 39.6-cm (15.6-in) computers: 1. Position the computer upside down with - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 82
and slide the keyboard back toward the display then, release the ZIF connector (1) to which the keyboard cable is attached, and disconnect the keyboard cable (2) from the system board. Remove the keyboard on 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computers: 1. Position the computer upside down with - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 83
two Phillips PM2.5×3.0 broadhead black screws (1), one Phillips PM2.5×3.0 broadhead silver screw (2), and two Torx M2.5×6.0 screws (3) that secure the keyboard. 3. Turn the unit over, lift the top edge of the keyboard (1) and slide it (2) towards the display. Component replacement procedures 75 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 84
on its edge and slide the keyboard back toward the display then, release the ZIF connector (1) to which the keyboard cable is attached, and disconnect the keyboard cable (2) from the system board. Reverse this procedure to install the switch cover and keyboard. 76 Chapter 4 Removal and replacement - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 85
the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the palm rest (see Palm rest on page 68). 7. Remove the keyboard (see Keyboard on page 73). Remove the top cover on - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 86
3. Remove the nine Torx M2.5×6.0 screws (1), three Phillips PM2.5×3.0 black broadhead screws (2), and three Phillips PM2.0×3.0 screws (3). 4. Turn the computer over so it is right-side up and remove four Torx M2.5×6.0 screws. 78 Chapter 4 Removal and replacement procedures - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 87
5. Release the ZIF connector (1) and remove the power switch cable (2). 6. Rotate the top cover up (1) and remove it from the base enclosure (2). Component replacement procedures 79 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 88
: 1. With the display panel in the open position, press in (1) of the ExpressCard to release it and then pull the card (2) from the computer. 2. Position the computer upside down with the front toward you. 3. Remove the two Phillips PM2.0×2.0 screws (1) located in the battery bay, four Torx M2 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 89
4. Turn the computer over so it is right-side up and remove five Torx M2.5×6.0 screws. 5. Release the ZIF connector (1) and disconnect the power switch cable (2). Component replacement procedures 81 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 90
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the keyboard (see Keyboard on page 73). 82 Chapter 4 Removal and replacement procedures - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 91
Remove the power switch board: 1. Release the ZIF connector (1) and disconnect the ribbon cable (2) from the system board. 2. Remove the Phillips M2.5×3.0 broadhead screw (1) that secures the board to - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 92
and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the palm rest (see Palm rest on page 68). 6. Remove the keyboard (see Keyboard on page 73). 7. Remove the top cover (see Top cover on page 77). Remove the Bluetooth module on 39.6-cm (15 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 93
base enclosure with adhesive. Reverse this procedure to install the Bluetooth module. USB connector assembly The spare part number for adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the palm rest (see Palm rest on page 68). 6. Remove the keyboard (see Keyboard - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 94
USB connector assembly (4) from the base enclosure. Remove the USB connector assembly on 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computers: 1. Position the computer right-side up with the right side toward you. 2. Release the ZIF connector (1) and remove the cable (2) from the system board. 3. Lift - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 95
the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the palm rest (see Palm rest on page 68). 7. Remove the keyboard (see Keyboard on page 73). 8. Remove the top cover - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 96
the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the palm rest (see Palm rest on page 68). 7. Remove the keyboard (see Keyboard on page 73). 8. Remove the top cover - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 97
as far as it will comfortably go. CAUTION: Support the display assembly when removing the retaining screws. Failure to support the display assembly can result in damage to the display assembly and other computer components. 2. Disconnect the display cable (1) and the microphone cable (2) from the - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 98
cm (14.0-in) and 33.8-cm (13.3-in) computers: 1. Orient the computer in its normal position, face up with the display open as far as it will comfortably go. CAUTION: Support the display assembly when removing the retaining screws. Failure to support the display assembly can result in damage to the - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 99
assembly: 1. If it is necessary to replace the display bezel, display enclosure, or display hinges, remove the two mylar screw covers (1) and the 2 Phillips PM2.5×4.0 screws (2) that secure the display bezel to the display assembly. The screw covers are available in the Rubber Kit, spare part - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 100
that is attached with adhesive off the display enclosure. The webcam module can be ordered by using spare part number 611026-001. NOTE: To replace the webcam module in the display enclosure, align the holes on the webcam module with the pins on the display enclosure and press onto the double-sided - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 101
cm (14.0-in) or 33.8-cm (13.3-in) computers: 1. Remove the six Phillips PM2.0×3.0 screws (1) that secure the display hinges to the display panel 2. Remove the display hinges (2) by pulling them away from the display panel. The left and right display hinges are available in the Hinge Kit, spare part - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 102
cable from the raceway (2) in the display enclosure. To replace the display cable assembly: 1. Place the display panel face down on a protected soft surface and remove the clear protector (1) that covers the cable connector on the back of the panel. 2. Remove the display cable (2) from the back of - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 103
2. Peel the WLAN antenna receivers (2) from the enclosure Reverse this procedure to assemble the display assembly. Component replacement procedures 95 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 104
by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the hard drive (see Hard drive on page 56). 7. Remove the optical drive - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 105
Remove the system board on a 39.6-cm (15.6-in) computer: 1. Position the computer with the front toward you. 2. Release the audio ZIF connector (1) and disconnect the cable (2) from the left edge of the system board. 3. Remove the two Phillips M2.0×3.0 screws (3) that secure the system board - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 106
enclosure (1), and disconnect the cable (2) from the system board. 9. Disconnect the main battery cable (3) from the bottom of the system board. 10. Lift the system board at .8-cm (13.3-in) computers: 1. Position the computer with the front toward you. 98 Chapter 4 Removal and replacement procedures - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 107
disconnect the audio ZIF connector and remove the flat-ribbon cable (2) from the system board. 3. Remove the optical drive extender on the 35.6-cm (14.0-in) computer by first at an angle (3) and disconnect the main battery cable (4) from the bottom of the board. Component replacement procedures 99 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 108
by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the hard drive (see Hard drive on page 56). 7. Remove the optical drive - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 109
Remove the main battery cable: 1. Remove the two Phillips PM2.5×4.0 screws (1) that secure the connector to the base enclosure. 2. Lift the connector up (2) and out of the base enclosure. Reverse the procedure to install the main battery connector. Component replacement procedures 101 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 110
by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the hard drive (see Hard drive on page 56). 7. Remove the optical drive - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 111
by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the hard drive (see Hard drive on page 56). 7. Remove the optical drive - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 112
10. Remove the keyboard (see Keyboard on page 73). 11. Remove the top cover (see Top cover on page 77). 12. Remove the system board (see System board on page 96). Remove the modem module: 1. Position the computer right-side up with the front toward you. 2. Remove the two Phillips PM2.5×3.0 screws - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 113
by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 53). 5. Remove the service door (see Service door on page 53). 6. Remove the hard drive (see Hard drive on page 56). 7. Remove the optical drive - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 114
to the base enclosure and then remove the audio board (2). Remove the audio board from 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computers: 1. Release the latch (1) that secures the board to the base enclosure. 2. Lift the audio board (2) from the base enclosure. Reverse this procedure to install - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 115
in Windows Starting Computer Setup Computer Setup is a preinstalled, ROM-based utility that can be used even when the operating system is not working or will not load. NOTE: Some of the Computer Setup menu items listed in this guide may not be supported by your computer. NOTE: An external keyboard - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 116
the File, Security, or System Configuration menu. To exit Computer Setup menus, choose one of the following methods: ● To exit Computer Setup menus without saving your changes, click the Exit icon in the lower-left corner of the screen, and then follow the on-screen instructions. - or - Use the tab - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 117
and time on the computer. Displays the following information: ● System information ◦ Identification information for the computer and the batteries in the system. ◦ Specification information for the processor, cache and memory size, system ROM, video revision, and keyboard controller version. ● Start - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 118
Changes and Exit Save Changes and Exit To do this Cancel any changes entered during the current session. Then exit and restart the computer. Save any changes entered during the current session. Then exit and restart the computer. Your changes go into effect when the computer restarts. 110 Chapter - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 119
criteria. Enable/disable HP SpareKey (enabled by default). Enable/disable HP SpareKey enrollment (enabled Computer Setup by turning on (not restarting) the computer. Enable/disable Automatic DriveLock support (disabled computer asset tracking number and ownership tag. Computer Setup in Windows 111 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 120
by default). ● Set the legacy boot order. ● Enable/disable USB legacy support (enabled by default). When enabled, USB legacy support allows the following: ◦ Use of a USB keyboard in Computer Setup even when a Windows operating system is not running. ◦ Startup from bootable USB devices, including - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 121
these options above varies by computer model. ● Enable/disable secondary battery fast charge (enabled by default). ● Enable/disable HP QuickLook 2 (enabled by default). ● Enable/disable preboot authentication on HP QuickLock boot (enabled by default). ● Enable/disable HP QuickWeb (enabled by default - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 122
). ● Enable/disable the notebook upgrade bay device (enabled by default). ● Enable/disable the fingerprint device (enabled by default). ● Enable/disable the integrated camera (enabled by default). ● Enable/disable the power monitor circuit (enabled by default). ● Enable/disable the audio device - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 123
emulation mode. Options include the following: ◦ ANSI (default setting) ◦ VT100 ● Enable/disable firmware progress event support. ● Enable/disable initiate Intel CIRA. Change, view, or hide security levels for all BIOS menu items. Restore the default security settings. Computer Setup in Windows 115 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 124
is not working or will not load. NOTE: Some of the Computer Setup menu items listed in this guide may not be supported by your computer or your operating system. NOTE: Pointing devices are not supported in Computer Setup. You must use the keyboard to navigate and make selections. NOTE: An external - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 125
and System Configuration menus. 1. Open Computer Setup by turning on or restarting the computer, and then pressing f10 while the "F10 = ROM Based Setup" message is displayed in the lower-left corner of the screen. Because Computer Setup is not operating system based, it does not support the TouchPad - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 126
Computer Setup options. NOTE: Some of the Computer Setup menu items listed in this section may not be supported by your computer computer. ● View specification information for the processor, cache and memory size, and system ROM. Replace the configuration settings in Computer Setup with the original - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 127
this section may not be supported by your computer or your operating system. Select Setup Password Password Options DriveLock Passwords System IDs Disk Sanitizer To do this Enter, change, or delete a setup password. ● Enable/disable stringent security. ● Enable/disable the password requirement on - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 128
4th boot device: Notebook hard drive ◦ 5th boot device: USB hard disk ◦ 6th boot device: Network controller ● Swap the functions of the fn key and left ctrl key. ● Enable/disable USB legacy support. When enabled, USB legacy support allows the following: ◦ Use of a USB keyboard in Computer Setup even - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 129
. ● Enable/disable embedded Bluetooth Device Radio. ● Enable/disable Network Interface Controller (NIC) ● Enable/disable LAN/WLAN Switching. ● Enable/disable Wake on LAN. ● Enable/disable the integrated camera (webcam) ● Enable/disable USB port. ● Enable/disable ExpressCard slot. Computer Setup in - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 130
optical drive, 2.04 kg WXGA display assembly, 1 memory module, hard drive, and 6-cell battery) 4.5 lbs Input power Operating voltage 18.5 V dc @ 4.74 A - 90 W Operating current 4.74 A Temperature Operating (not writing to optical disc) 0°C to 35°C 32°F to 95°F 122 Chapter 6 Specifications - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 131
thermal limits for plastic surfaces. The computer operates well within this range of temperatures. 39.6-cm (15.6-in) display specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Format Configuration Backlight Response Time Metric U.S. 19.35 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 132
Total power consumption Viewing angle @CR>10 Metric 5.6 W (max) 5 VA U.S. 124 Chapter 6 Specifications - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 133
35.6-cm (14.0-in) display specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Format Configuration Backlight Response Time Total power consumption Viewing angle @ CR>10 Metric U.S. 17.40 cm 6.9 in 30.94 cm 12.2 in 35.50 cm 14.0 in - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 134
33.8-cm (13.3-in) display specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Format Configuration Backlight Response Time Total power consumption Viewing angle @ CR>10 Metric U.S. 16.50 cm 6.5 in 29.34 cm 11.5 in 33.66 cm 13.3 in - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 135
to 131°F) (41°F to 131°F) (41°F to 131°F) *1 GB = 1 billion bytes when referring to hard drive storage capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. NOTE: Certain restrictions and exclusions apply. Contact technical support for details. Hard drive - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 136
DVD-ROM Drive specifications Applicable disc Access time Random Cache buffer Data transfer rate CD-R (24X) CD-RW (10X) CD-ROM (24X) DVD (8X) Multiword DMA mode 2 DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18, CD-ROM (Mode 1 and 2), CD Digital Audio, CD-XA ready (Mode 2, Form 1 and Form 2), CD-I (Mode 2, - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 137
DVD±RW Double-Layer Combo Drive specifications Applicable disc Access time Random Cache buffer Data CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CD-RW), CD-R, CD-RW, DVD-ROM (DVD-5, DVD - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 138
and recovery in Windows 7 Overview To protect your information, use Windows Backup and Restore computer to a previous state ● Recovering information using recovery tools NOTE: For detailed instructions, perform a search for these topics in Help and Support. NOTE: In case of system instability, HP - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 139
computer. NOTE: DVDs and DVDs with double-layer (DL) support screen instructions to set up your backup, create a system image (select models only), or create a system repair disc (select models only). NOTE: Windows includes the User Account Control feature to improve the security of your computer - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 140
(purchased separately)" section in this guide. 3. If the Windows partition and the HP Recovery partition are listed, restart the computer, and then press f8 before the Windows operating system loads. 4. Select Startup Repair. 5. Follow the on-screen instructions. 132 Chapter 7 Backup and recovery - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 141
http://www.hp.com/support, select your country or region, and follow the on-screen instructions. You can also order the DVD by calling technical support. For contact information, refer to the Worldwide Telephone Numbers booklet included with the computer. CAUTION: Using a Windows 7 operating system - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 142
4. Follow the on-screen instructions. 5. Click Next. 6. Select Repair your computer. 7. Follow the on-screen instructions. Backup and recovery in Windows Vista Overview To protect your information, use Backup and Restore to back up individual files and folders, back up your entire hard drive (select - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 143
, depending on file size and the speed of the computer. 1. Select Start > All Programs > Maintenance > Backup and Restore. 2. Follow the on-screen instructions to back up your entire computer (select models only) or your files. NOTE: Windows includes the User Account Control feature to improve the - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 144
guide. 3. Restart the computer, and then press f8 before the Windows operating system loads. 4. Select Repair your computer. 5. Follow the on-screen instructions. NOTE: For additional information on recovering information using the Windows tools, perform a search for these topics in Help and Support - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 145
to http://www.hp.com/support, select your country or region, and follow the on-screen instructions. You can also order the DVD by calling technical support. For contact information, refer to the Worldwide Telephone Numbers booklet included with the computer. CAUTION: Using a Windows Vista operating - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 146
computer. Windows provides the following options: ● Backing up individual files and folders ● Backing up all files and folders ● Scheduling automatic backups ● Creating recovery points ● Recovering information NOTE: For detailed instructions, perform a search for these topics in Help and Support - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 147
on file size and the speed of the computer. 1. Click Start > All Programs > Accessories > System Tools > Backup. 2. Follow the on-screen instructions. Performing a recovery In case of system failure or instability, the computer provides the following tools to recover your files: ● Windows recovery - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 148
4. Turn on the computer. 5. Follow the on-screen instructions to install the operating system. 6. After the operating system is installed, remove the Operating System disc and insert the Driver Recovery disc. 7. Follow the on-screen instructions to install the drivers and programs. 140 Chapter 7 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 149
8 Connector pin assignments Audio-in (microphone) Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground Audio-out (headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel 3 Ground Audio-in (microphone) 141 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 150
Signal 1 Red analog 2 Green analog 3 Blue analog 4 Not connected 5 Ground 6 Ground analog 7 Ground analog 8 Ground analog 9 +5 VDC 10 Ground 11 Monitor detect 12 DDC 2B data 13 Horizontal sync 14 Vertical sync 15 DDC 2B clock 142 Chapter 8 Connector pin assignments - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 151
HDMI Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Signal Transition minimized differential signal (TMDS) data 2+ TMDS data 2 shield TMDS data 2- TMDS data 1+ TMDS data 1 shield TMDS data 1- TMDS data 0+ TMDS data 0 shield TMDS data 0- TMDS clock+ TMDS clock shield TMDS clockConsumer - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 152
RJ-11 (modem) Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused 144 Chapter 8 Connector pin assignments - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 153
RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground RJ-45 (network) 145 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 154
feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC or from 220 to 240 volts AC. The 3-conductor power cord set included with the computer . ● The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector for mating - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 155
Requirements for specific countries and regions Country/region Accredited agency Applicable note number Japanese Industrial Standard C8303 (7 A, 125 V) configuration. 4. The flexible cord must be Type RVV, 3-conductor, 0.75-mm² conductor size. Power cord set fittings (appliance coupler and - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 156
backlight (1) and the liquid crystal display (LCD) panel (2). NOTE: The procedures provided in this chapter are general disassembly instructions. Specific details, such as screw sizes, quantities, and locations, and component shapes and sizes, can vary from one computer model to another. 148 Chapter - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 157
following steps to disassemble the display assembly: 1. Remove all screw covers (1) and screws (2) that secure the display bezel to the display assembly. 2. Lift up and out on the left and right inside edges (1) and the top and bottom inside edges (2) of the display bezel until the bezel disengages - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 158
all screws (1) that secure the display panel assembly to the display enclosure. 6. Remove the display panel assembly (2) from the display enclosure. 7. Turn the display panel assembly upside-down. 8. Remove all screws that secure the display panel frame to the display panel. 9. Use a sharp-edged - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 159
10. Remove the display panel frame (2) from the display panel. 11. Remove the screws (1) that secure the backlight cover to the display panel. 12. Lift the top edge of the backlight cover (2) and swing it outward. 13. Remove the backlight cover. 14. Turn the display panel right-side up. Display 151 - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 160
15. Remove the backlight cables (1) from the clip (2) in the display panel. 16. Turn the display panel upside-down. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 161
the LCD panel. 20. Remove the screws (2) that secure the LCD panel to the display rear panel. 21. Release the LCD panel (3) from the display rear panel. 22. Release the tape (4) that secures the LCD panel to the display rear panel. 23. Remove the LCD panel. 24. Recycle the LCD panel and backlight - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 162
ambient light sensor 114 audio device 114 bay device 114 Bluetooth device 114 fingerprint reader 114 integrated camera 114 internal speakers 114 microphone 114 modem 114 Network Interface Controller (LAN) 114 options 114 power monitor circuit 114 Wake on LAN 114 wireless button 114 WLAN device - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 163
15 keypad 14, 15 wireless 14, 15 L language, changing in Computer Setup 112 latches, battery release 19 LCD Cable contents 35 spare part number 35 legacy support, USB 107, 112, 116, 120 lights caps lock 11 optical drive 17 power 12 webcam 20 wireless 12 M main battery cable removal 100 mass storage - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 164
4 156 Index external media cards 5 graphics 2 hard drives 3 keyboard 6 memory module 3 modem module 4 operating system 6 optical drives 4 panels 2 pointing devices 6 ports 5 power requirements 6 processors 1 product name 1 security 6 serviceability 8 wireless 5 product name 1 R recovery partition - Compaq 420 | Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 - Page 165
117 restoring factory settings 108, 117 Security menu 111, 119 System Configuration menu 112, 120 slots ExpressCard 18 security cable 18 speaker identifying 13 speakers removal 87 spare part number 29, 87 specifications computer 122 display 123, 125, 126 DVD-ROM Drive 128 DVD±RW Double-Layer Drive
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Compaq 420 Notebook PC
Compaq 421 Notebook PC
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HP 420 Notebook PC
HP 620 Notebook PC
Maintenance and Service Guide