HP ProBook 4420s HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai
HP ProBook 4420s - Notebook PC Manual
View all HP ProBook 4420s manuals
Add to My Manuals
Save this manual to your list of manuals |
HP ProBook 4420s manual content summary:
- HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 1
HP ProBook 4320s Notebook PC HP ProBook 4321s Notebook PC HP ProBook 4420s Notebook PC HP ProBook 4421s Notebook PC Maintenance and Service Guide SUMMARY This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides comprehensive information on identifying - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - 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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 3
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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 4
iv Safety warning notice - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 5
TouchPad ...10 Lights ...11 Buttons, speakers, switches, and fingerprint reader (select models only 12 Keys ...13 Front components ...14 Right-side components ...15 Left-side components ...16 Bottom components ...17 Display 43 Tools required ...43 Service considerations ...43 Plastic parts - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 6
...64 Hard drive ...66 RTC battery ...68 WLAN module ...69 Bluetooth module ...72 Heat sink and fan ...74 Processor ...78 Power connector cable ...80 Display assembly System Configuration menu 102 Computer Setup in Windows Vista and Windows XP 104 Starting Computer Setup 104 Using Computer Setup - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 7
...118 33.8-cm (13.3-in) display specifications 119 35.6-cm (14.0-in) display specifications 120 Hard drive specifications ...120 Windows recovery tools 129 Using f11 ...130 Using a Windows Vista operating system DVD (purchased separately 130 Backup and recovery in Windows XP 131 Overview - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 8
eSATA/USB ...141 9 Power cord set requirements ...142 Requirements for all countries and regions 142 Requirements for specific countries and regions 142 10 Recycling ...144 Battery ...144 Display ...144 Index ...150 viii - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 9
's Republic of China. HP ProBook 4321s Notebook PC √ NOTE: For use in the People's Republic of China. HP ProBook 4420s Notebook PC √ √ HP ProBook 4421s Notebook PC √ Intel® Arrandale™ ● i7-620M, 2.66-GHz (Turbo up to 3.33 GHz), √ √ √ √ 4-MB L3 cache, 4 threads ● i5-540M, 2.53-GHz - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 10
memory module slots Supports dual-channel memory Supports up to 4 GB of system memory in Brazil Supports up to 8 channel) ● 1024-MB total system memory (1024-MB × 1) HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete √ √ √ √ √ √ √ √ - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 11
available with UMA base model and Window XP. ● DVD±RW SuperMulti Double-Layer Drive with LightScribe ● DVD ROM Drive Supports external USB diskette drive only HD Modem cable not included HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 12
HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete Supports display √ assembly Subscriber identity module (SIM) security (customer-accessible in battery bay) One ExpressCard slot (34 mm) √ √ √ √ √ Media Card Reader supporting - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 13
Category Description HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete USB 2.0 (3) √ √ √ √ Combo eSATA/USB 2.0 (1) √ √ √ √ HDMI √ √ √ √ VGA (Dsub 15-pin) supporting 1600 × 1200 √ √ √ √ external resolution at 75-GHz ( - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 14
Category Description HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete Windows 7 Starter with Office 2007 Ready (excludes Japan) √ √ √ √ Windows 7 Starter with Office 2007 Ready - EDGI √ √ √ √ (available for Argentina, Brazil - - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 15
) Restore media: Windows 7 Professional 64 Windows 7 Professional 32 Windows 7 Home Premium 32 Windows 7 Home Basic 32 Windows 7 Starter Windows Vista Business 32 Windows Vista Home Basic 32 Windows XP Professional HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 16
√ √ Certified: Microsoft® WHQL Web Support: Windows 7 Professional 64 √ √ √ √ √ √ √ √ Windows Vista Business 64 End-user replaceable parts: AC adapter Battery (system) √ √ √ √ √ √ √ √ √ √ √ √ Bluetooth module Keyboard Speaker assembly √ √ √ √ √ √ √ √ √ √ √ √ Hard - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 17
this section. Use the following instructions to see a list of hardware installed in the computer. In Windows® 7: ▲ Select Start > Control or password for tasks such as installing software, running utilities, or changing Windows settings. Refer to Help and Support for more information. In Windows XP: - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 18
zone* 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) Right TouchPad button* Functions like the right button on an external mouse. *This table describes factory settings. To view or change - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 19
Caps lock light (3) HP QuickLook light (4) HP QuickWeb light (5) Power light (6) Wireless light Description ● Amber: The TouchPad is off. ● Off: The TouchPad is on. On: local area network (WLAN) device and/or a Bluetooth® device, is on. ● Amber: All wireless devices are off. Top components 11 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 20
Fingerprint reader (select models only) Description Produce sound. Turns off the display if the display is closed while the power is on. ● When the computer is > Power Options. Allows a fingerprint logon to Windows, instead of a password logon. 12 Chapter 2 External component identification - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 21
in combination with the fn key. Executes frequently used system functions when pressed in combination with a function key or the esc key. Displays the Windows Start menu. Displays a shortcut menu for items beneath the cursor. Can be used like the keys on an external numeric keypad when pressed in - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 22
optical drive is being accessed. ● Amber: HP 3D DriveGuard has temporarily parked the hard drive. Supports the following optional digital card formats: ● connected to the headphone jack, the computer speakers are disabled. Connects an optional computer headset microphone, stereo array microphone - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 23
Right-side components Component (1) USB ports (2) (2) RJ-11 (modem) jack (select models only) (3) Optical drive light (select models only) (4) Optical drive (select models only) Description Connect optional USB devices. Connects a modem cable. Blinking: The optical drive is being accessed. Reads - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 24
. Connects an AC adapter. ● On: The computer is connected to external power and the battery is charging. ● Off: The computer is not connected to external power. Enables airflow to hard drive. Connects optional USB device. Supports optional ExpressCards. 16 Chapter 2 External component identification - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 25
Bottom components Component (1) Battery release latches (2) (2) Battery bay (3) SIM slot (select models only) Description Release the battery from the battery bay. Holds the battery. Contains a wireless subscriber identity module (SIM). The SIM slot is located inside the battery bay. Bottom - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 26
switch (2) Internal microphone (3) Webcam light (select models only) (4) Webcam (select models only) Description Turns off the display if the display is closed while the power is on. Records sound. On: The webcam is in use. Records video and captures still photographs. 18 Chapter 2 External - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 27
WLANs). *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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 28
Description (1) Power cord* Connects an AC adapter to an AC outlet. (2) Battery* Powers the computer when the computer is not plugged into an external power source. (3) AC adapter Converts AC power to DC power. *Batteries and power cords vary in appearance by country or region. 20 Chapter - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 29
, the serial number label, located on the bottom of the computer, provides important information that you may need when contacting technical support. (1) Product name (2) Serial number (3) Product number (4) Warranty period (5) Model description (select models) Serial number label location 21 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 30
Computer major components 22 Chapter 3 Illustrated parts catalog - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 31
, red 599567-001 607652-001 599568-001 607653-001 Power button board (included with switch cover) Keyboard In computer models with 33.8-cm (13.3-in) displays: ● For use in Belgium ● For use in Brazil ● For use in Bulgaria ● For use in Canada (French) ● For use in Denmark ● For use in Europe - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 32
Slovakia ● For use in the United Kingdom ● For use in the United States ● For use in Turkey In computer models with 35.6-cm (14.0-in) displays: ● For use in Belgium ● For use in Brazil ● For use in Bulgaria ● For use in Canada (French) ● For use in Denmark ● For use in Europe - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 33
Kingdom ● For use in the United States ● For use in Turkey Palm rest (includes TouchPad) ● For use with fingerprint reader and 33.8-cm (13.3-in) displays ● For use with 33.8-cm (13.3-in) displays ● For use with fingerprint reader and 33.8-cm (13.3-in) displays, red ● For use with 33.8-cm (13.3-in - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 34
-001 Memory module (PC3-10600, 1333-MHz, DDR3, shared) 2048-MB 598856-002 1024-MB 598859-002 Bluetooth module cable (included in Cable kit on page 32, part number 599525-001) Bluetooth module (without cable) 537921-001 Modem module NOTE: The modem module spare part kit does not include - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 35
11b/g/n 1x1 WiFi Adapter 593533-001 WWAN module, Qualcomm EV-DO HSPA 531993-001 (15) RTC battery (16) Top cover For use with 33.8-cm (13.3-in) displays For use with 35.6-cm (14.0-in) displays (17) Processor (includes replacement thermal material) 599516-001 599569-001 599570-001 Computer major - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 36
GHz ● Intel Arrandale Core 620M 2.26-GHz ● Intel Arrandale i3-330M 2.13-GHz ● Intel Arrandale i3-350M 2.26-GHz ● Intel Arrandale i5-430M 2.26-GHz with 33.8-cm (13.3-in) displays 535864-001 For use in computer models with 35.6-cm (14.0-in) displays 599515-001 Battery 9-cell, 93-Wh (2.8Ah) - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 37
Item (28) Description Optical drive (includes bezel) Blu-ray Disc ROM Drive with SuperMulti DVD±R/RW Double-Layer DVD±RW SuperMulti Double-Layer Drive with LightScribe DVD ROM Drive Display assembly components Spare part number 599538-001 599540-001 599539-001 Display assembly components 29 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 38
on select models, webcam connector) ● Display cable for 33.8-cm (13.3-in) displays with webcam ● Display cable for 35.6-cm (14.0-in) displays with webcam ● Display cable for 33.8-cm (13.3-in) displays without webcam ● Display cable for 35.6-cm (14.0-in) displays without webcam (6) WLAN antennas and - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 39
Plastics Kit Item Description Plastics Kit: (1) ExpressCard slot bezel (2) Optical drive blank (used with no ODD option) RJ11 (modem) connector blank (not illustrated, used with No-Modem option) Spare part number 599563-001 Plastics Kit 31 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 40
Cable kit Item (1) (2) (3) Description Cable kit: Power cable Bluetooth cable RJ-11 (modem) jack cable Spare part number 599525-001 32 Chapter 3 Illustrated parts catalog - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 41
Mass storage devices Item Description (1) Hard drive (includes bracket) 500-GB, 7200-rpm 320-GB, 7200-rpm 250-GB, 7200-rpm (2) Optical drive (includes bezel) Blu-ray Disc ROM Drive with SuperMulti DVD ±R/RW Double-Layer DVD±RW SuperMulti Double-Layer Drive with LightScribe DVD-ROM Drive Spare part - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 42
Miscellaneous parts Description AC adapters 65-W, 3-pin Smart AC adapter ● For use in all countries and regions except India ● For use in India 90-W Slimline AC adapter ● For use in all countries and regions except India ● For use in India Power cords (AC power, 3-pin, black, 1.83 m) ● For use in - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 43
Description Rubber kit (includes display bumpers, display screw covers, base enclosure feet, and display hinge bumpers) Screw kit, includes: ● T8 slotted-torx M2.5x6.5 ● T8 slotted-torx M2.5x5.0 ● T8 slotted-torx M2.5x3.0 ● Phillips P1 M2.5x5.0 ● Phillips - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 44
Power cord (AC power, 3-pin, black, 1.83 m), for use in Argentina Power cord (AC power, 3-pin, black, 1.83 m), for use in India HP Mobile Broadband Module HP Mobile Broadband Module Broadcom 4312G 802.11b/g WiFi Adapter for use in Canada, the Cayman Islands, Guam, Puerto Rico, the United States, and - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 45
56K modem for use in Australia and New Zealand WWAN module, Qualcomm EV-DO HSPA 90-W Slimline AC adapter for use in India Bluetooth module (without cable) Intel WiFi Link 6200 802.11 a/g/n for use in Andorra, Antigua and Barbuda, Argentina, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 46
, 6-cell, 47-Wh (2.2Ah) Li-ion Battery, 9-cell, 93-Wh (2.8Ah) Li-ion Processor, Intel Arrandale 520M 2.4-GHz Processor Intel Arrandale 540M 2.53-GHz Processor, Intel Arrandale i3-330M 2.13-GHz Processor, Intel Arrandale i3-350M 2.26-GHz Processor, Intel Arrandale i5-430M 2.26-GHz Memory module (PC3 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 47
for use with 33.8-cm (13.3-in) displays Palm rest with Touchpad and fingerprint reader for use with 35.6-cm (14.0-in) displays Palm rest with Touchpad for use with 33.8-cm (13.3-in) displays, red Palm rest with Touchpad for use with 35.6-cm (14.0-in) displays Display assembly, 33.8-cm (13.3-in) HD - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 48
Spare part number 599565-001 599566-001 599567-001 599568-001 599569-001 599570-001 599571-001 599572-001 599572-031 599572-041 599572-051 599572-061 599572-071 599572-081 599572-091 599572-121 599572-131 599572-141 599572-161 599572-171 599572-201 599572-211 599572-251 599572-261 599572-281 599572- - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 49
Spare part number 599572-BG1 599572-DD1 599572-DJ1 599572-DW1 599573-001 599573-031 599573-041 599573-051 599573-061 599573-071 599573-081 599573-091 599573-121 599573-131 599573-141 599573-161 599573-171 599573-201 599573-211 599573-251 599573-261 599573-281 599573-291 599573-A41 599573-A81 599573- - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 50
for use with 33.8-cm (13.3-in) displays, red Palm rest with Touchpad and fingerprint reader for use with 35.6-cm (14.0-in) displays, red Palm rest with Touchpad for use with 33.8-cm (13.3-in) displays, red Palm rest with Touchpad for use with 35.6-cm (14.0-in) displays, red Switch cover, 33.8-cm (13 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 51
T8 screwdriver Service considerations The following sections include some of the considerations that you must keep in mind during disassembly and to prevent damage. Plastic parts CAUTION: Using excessive force during disassembly and reassembly can damage plastic parts. Use care when handling the - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 52
Cables and connectors CAUTION: When servicing the computer, be sure that cables are placed in their proper locations during the reassembly process. Improper cable placement can damage the computer. Cables must - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 53
work perfectly throughout a normal cycle. Or the device 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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 54
surface and use properly grounded tools and equipment. ● Use conductive field service tools, such as cutters, screwdrivers, and vacuums. ● When fixtures assemblies by the case or PCM laminate. Handle these items only at static-free workstations. ● Avoid contact with pins, leads, or circuitry. ● Turn - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 55
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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 56
8 different sizes, that must be removed, replaced, or loosened when servicing the computer. Make special note of each screw size and location during , provides important information that you may need when contacting technical support. NOTE: Serial number label color varies on select models. - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 57
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 into the battery bay until you hear a click. Component replacement procedures - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 58
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 49). Remove the SIM: 1. Push on the SIM (1) to release it from the SIM slot. 2. Remove the SIM (2) from the computer. Install the SIM by inserting it into - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 59
.3-in) displays ● For with 33.8-cm (13.3-in) displays, red ● For with 35.6-cm (14.0-in) displays ● For with 35.6-cm (14.0-in) displays, red and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). Remove the switch cover: 1. Position the computer upside - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 60
4. Slide the switch cover back (1), and then remove it from the computer (2). Reverse this procedure to install the switch cover and keyboard. 52 Chapter 4 Removal and replacement procedures - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 61
(see Battery on page 49). 5. Remove the switch cover (see Switch cover on page 51). Remove the keyboard: 1. Remove the three Phillips PM2.5×3.0 screws that secure the keyboard to the computer. NOTE: On computer models with 35.6-cm (14.0-in) displays, remove four screws that secure the keyboard - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 62
2. Slide the keyboard back toward the display (1), and then rotate it right (2) until it rests upside down on the right side of the computer. 3. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached, and disconnect the keyboard cable (2) from the system board. - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 63
(see Battery on page 49). 5. Remove the switch cover (see Switch cover on page 51). 6. Remove the keyboard (see Keyboard on page 53). NOTE: You can release the keyboard without removing the keyboard cable from the system board, and then rotate it right until it rests upside down on the right side - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 64
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 (3) to prevent incorrect insertion into the memory module slot. Reverse this procedure to install a memory module. 56 Chapter 4 Removal and replacement procedures - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 65
(see Battery on page 49). 5. Remove the switch cover (see Switch cover on page 51). 6. Remove the keyboard (see Keyboard on page 53) NOTE: You can release the keyboard without removing the keyboard cable from the system board, and then rotate it left until it rests upside down on the left side - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 66
4. Remove the optical drive (3) from the computer. 5. If it is necessary to replace the optical drive bracket, position the optical drive with the rear toward you. 6. Remove the two Phillips PM2.0×3.0 screws (1) that secure the optical drive bracket to the optical drive. 7. Remove the optical drive - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 67
from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Switch cover (see Switch cover on page 51) Remove the power button board: 1. Release the ZIF connector that connects the power button board cable to the system board (1), and - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 68
with 33.8-cm (13.3-in) displays Speakers for use in computer models with 35.6-cm (14.0-in) displays Spare part number 599566-001 605559- outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the switch cover and keyboard (see Switch - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 69
Reverse this procedure to install the speakers. Component replacement procedures 61 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 70
to restore computer functionality, and then contact technical support through Help and Support. Before removing the WWAN module, follow these steps and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the switch cover (see Switch cover on - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 71
4. Remove the WWAN module (3) by pulling the module away from the slot at an angle. NOTE: WWAN modules are designed with a notch (4) to prevent incorrect insertion. Reverse this procedure to install the WWAN module. Component replacement procedures 63 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 72
TouchPad) ● For use with fingerprint reader and 33.8-cm (13.3-in) displays ● For use with 33.8-cm (13.3-in) displays ● For use with fingerprint reader and 33.8-cm (13.3-in) displays, red ● For use with 33.8-cm (13.3-in) displays the battery (see Battery 64 Chapter 4 Removal and replacement procedures - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 73
the fingerprint reader connector (1), and then remove the fingerprint reader cable (2) from the system board. 5. Release the TouchPad cable connector (3), and then remove the TouchPad cable (4) from the system board. 6. Remove the palm rest (5). Reverse this procedure to install the palm rest - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 74
see Battery on page 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Palm rest (see Palm rest on page 64) Remove the hard drive: 1. Position the computer right-side up with the front toward you. 2. Remove the two Phillips - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 75
4. Remove the hard drive (4) from the hard drive bay. 5. If it is necessary to replace the hard drive bracket, remove the two Phillips PM3.0×3.0 hard drive bracket screws (1) from each side of the hard drive. 6. Lift the bracket (2) straight up to remove it from the hard drive. Reverse this - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 76
cover (see Switch cover on page 51) c. Keyboard (see Keyboard on page 53) d. Palm rest (see Palm rest on page 64) Remove the RTC battery: 1. Disconnect the RTC battery connector from the system board (1). 2. Remove the RTC battery from the system board (2). Reverse this procedure to install the RTC - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 77
WLAN module Description Spare part number Intel® Centrino™ Advanced-N 6200 802.11a/b/g 2x2 For use in Andorra, Antigua and Barbuda, Argentina, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Barbados, Belgium, Bermuda, Bolivia, Bosnia, Brazil, Brunei, Bulgaria, Canada, the Cayman - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 78
computer functionality, and then contact technical support through Help and Support. Before removing the WLAN module, Battery on page 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Palm rest (see Palm rest on page 64 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 79
3. Remove the two Phillips PM2.5×3.0 screws (2) that secure the WLAN module to the computer. (The edge of the module opposite the slot rises away from the computer.) 4. Remove the WLAN module (3) by pulling the module away from the slot at an angle. NOTE: WLAN modules are designed with a notch (4) - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 80
adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Palm rest (see Palm rest on page 64) Remove the Bluetooth module: 1. Position the computer right-side - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 81
Reverse this procedure to install the Bluetooth module. Component replacement procedures 73 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 82
(see Battery on page 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Palm rest (see Palm rest on page 64) Remove the heat sink: 1. Position the computer right-side up with the front toward you. 2. Remove the six Phillips - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 83
4. Lift the right edge of the heat shield to disengage the tabs on the left side of the heat shield from the top cover, and then remove the heat shield (3). 5. Disconnect the fan cable from the system board (1). 6. Loosen the 2.0×5.0 captive screw from the system board, and then remove the fan (3). - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 84
NOTE: Loosen the two additional screws that secure the heat sink to the graphics devices on models with discrete graphics subsystem memory. 8. Lift the heat sink off the processor (2), and then lift the heat sink up and to the right to remove the heat sink from the base enclosure (3). NOTE: The - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 85
Reverse this procedure to install the heat sink and fan. Component replacement procedures 77 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 86
material) (not illustrated) ● Intel Arrandale 520M 2.4-GHz ● Intel Arrandale 540M 2.53-GHz ● Intel Arrandale Core 620M 2.26-GHz ● Intel Arrandale i3-330M 2.13-GHz ● Intel Arrandale i3-350M 2.26-GHz ● Intel Arrandale i5-430M 2.26-GHz Spare part number 594187-001 594188-001 587259-001 597622-001 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 87
3. Lift the processor (2) straight up and remove it. NOTE: When you install the processor, the gold triangle (3) on the processor must be aligned with the triangle (4) embossed on the processor socket. Reverse this procedure to install the processor. Component replacement procedures 79 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 88
and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the following components: a. Switch cover (see Position the computer right-side up with the front toward you. 2. Release the power connector cable from the system board (1). 3. Remove the - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 89
and cables and, on select computer models, 2 WWAN antennas and cables) NOTE: WWAN is available only on select models with 33.8-cm 13.3-in displays. ● 33.8-cm (13.3-in) HD (1366x768 resolution) 599553-001 ● 33.8-cm (13.3-in) HD BrightView 599554-001 ● 33.8-cm (13.3-in) HD BrightView with - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 90
then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the following components: a. Switch cover Palm rest on page 64) e. WWAN cables (see WWAN module on page 62) f. WLAN cables (see WLAN module on page 69) Remove the display assembly: 82 Chapter - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 91
assembly when removing the following screws. Failure to support the display assembly can result in damage to the display assembly and other computer components. 1. Remove the five T8 slotted-Torx M2.5×6.0 screws (1) that secure the display assembly to the base enclosure. NOTE: Your model of the - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 92
hinges, remove the four Mylar screw covers (1) and the four T8 slotted-Torx M2.5×6.0 screws (2) that secure the display bezel to the display assembly. The screw covers are available in the rubber kit, spare part number 599564-001. 5. Remove the bezel: a. Flex the top of the bezel from - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 93
cover (1), disconnect the webcam cable from the module (2), and then remove the webcam. 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 tape. 7. If it is necessary to replace the - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 94
(2). The left and right display hinges are available in the display hinge kit. 10. If it is necessary to replace the display/webcam cable, turn the display panel upside-down and peel back the tape that secures the display cable to the display panel (1), and then release the connector locking bar - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 95
11. Release the cable from the display panel connector (3). NOTE: The display cable includes the microphone and webcam connector. 12. Gently pull the integrated microphone (1) from the clips at the top of the display back cover, remove the display cable from the clips and routing channels (2) along - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 96
the WWAN antennas (2) from the adhesive on the back cover, and then route the cables through the clips (3) that secure the antenna cables to the display back cover. b. Remove the wireless antennas and cables. Reverse this procedure to reassemble and install the - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 97
Battery on page 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Speakers (see Speakers on page 60) d. Optical drive (see Optical drive on page 57) e. Palm rest (see Palm rest on page 64) Remove the top cover: 1. Position - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 98
3. If installed, remove the ExpressCard slot bezel (1), release the top cover from the sides of the base enclosure (2), and then remove the top cover (3). Reverse this procedure to install the top cover. 90 Chapter 4 Removal and replacement procedures - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 99
(see Battery on page 49). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Optical drive (see Optical drive on page 57) d. Speakers (see Speakers on page 60) e. Palm rest (see Palm rest on page 64) f. Top cover (see Top - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 100
4. Disconnect the modem module cable (3). 5. Remove the modem module. Reverse this procedure to install the modem module. 92 Chapter 4 Removal and replacement procedures - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 101
35.6-cm (14.0-in) displays in the People's Republic AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the following components: 62) f. Palm rest (see Palm rest on page 64) g. Bluetooth module and cable (see Bluetooth module on page 72) h. WLAN module (see WLAN - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 102
When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● Memory module (see Memory module on page 55) ● WLAN module (see WLAN module on page 69) ● WWAN module (see WWAN module on page 62) ● - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 103
then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the following components: a. Switch e. Palm rest (see Palm rest on page 64) f. Hard drive (see Hard drive on page 66) g. Display assembly (see Display assembly on page 81) h. Top cover (see - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 104
then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 49). 5. Remove the following components: a. Switch e. Palm rest (see Palm rest on page 64) f. Hard drive (see Hard drive on page 66) g. Display assembly (see Display assembly on page 81) h. Top cover (see - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 105
3. Remove the modem cable (2) from the routing in the base enclosure. 4. Remove the modem cable. Reverse this procedure to install the modem cable. Component replacement procedures 97 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 106
Windows guide may not be supported by your for Startup Menu" message is displayed at the bottom of the instructions. NOTE: You can use either a pointing device (TouchPad, pointing stick, or USB mouse) or the keyboard to navigate and make selections in Computer Setup. 2. Press f10 to enter BIOS - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 107
ESC key for Startup Menu" message is displayed in the lower-left corner of the screen. 2. Press f10 to enter BIOS Setup. 3. Use the arrow keys to select Then follow the instructions on the screen. Your preferences go into effect when the computer restarts. NOTE: Your password settings and security - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 108
system date and time System Diagnostics Restore defaults Reset BIOS security to factory default Ignore changes and exit Save Setup with the original factory settings. (Password settings and security settings are not changed when you restore the factory settings.) Restore the BIOS security settings - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 109
HP SpareKey Enrollment Enable/disable HP SpareKey enrollment (enabled by default). User Tools Change Password Enter, change, or delete a BIOS administrator password. HP SpareKey Enrollment Enroll or reset HP from a list. ● Last Pass: Displays Disk Sanitizer Completion Report CAUTION: If you - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 110
Custom Logo (disabled by default). ● Enable/display Display Diagnostic URL. ● Enable/disable SD card boot. ● Enable/disable floppy boot. ● Enable/disable PXE Internal NIC boot. ● Set the UEFI boot order: Windows Boot Manager. ● Set the legacy boot order: ◦ 1st boot device: Notebook hard drive - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 111
boot. ● Enable/disable HP QuickWeb. ● Enable/disable HP QuickWeb: Write Protect (disabled by default). ● Enable/disable Intel® HT Technology. ● Enable/disable Wake on USB (disabled by default). ● Enable/disable Numlock state at boot: Off /On (disabled by default). Computer Setup in Windows 7 103 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 112
the audio device. ● Enable/disable the microphone. ● Enable/disable the internal speakers. Enable/disable USB port. Change, view, or hide security levels for all BIOS menu items. Restore the default security settings. Computer Setup in Windows Vista and Windows XP Starting Computer Setup Computer - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 113
while the "Press the ESC key for Startup Menu" message is displayed at the bottom of the screen. 2. Press f10 to enter BIOS Setup. 3. Use a pointing device or the arrow keys to select File > Restore defaults. 4. Follow the on-screen instructions. 5. To save your changes and exit, click the Save icon - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 114
Your changes go into effect when the computer restarts. NOTE: Your password settings and security settings are not changed when you restore the factory settings. 106 Chapter 5 Computer Setup - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 115
overview of Computer Setup options. NOTE: Some of the Computer Setup menu items listed in this chapter may not be supported configuration settings in Computer Setup with the original factory settings. (Hard drive mode, password settings, and security settings are not Windows Vista and Windows XP 107 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 116
Enable/disable HP SpareKey enrollment (disabled by default). Allow Reset of HP ProtectTools security keys Enable/disable reset of HP ProtectTools security keys. Change Password Enter, change, or delete a BIOS administrator password. HP SpareKey Enrollment DriveLock Passwords Enroll or reset HP - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 117
do this ● System Information-Displays the following information: ◦ Identification information for the computer and the batteries in the system. ◦ any hard drive in the system. ● Error Log-Displays a log file if any errors have occurred. Computer Setup in Windows Vista and Windows XP 109 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 118
options above varies by computer model. ● Enable/disable HP QuickLook 2 (enabled by default). ● Enable/disable Virtualization Technology (select models only; disabled by default). ● Enable/disable Dual Core CPU (enabled by default). ● Enable/Disable Unified Extensible Firmware Interface (UEFI) mode - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 119
the ExpressCard slot. ● Enable/disable the flash media reader. ● Enable/disable the USB port. CAUTION: Disabling the USB port also disables MultiBay devices and ExpressCard devices on the advanced port replicator. Change, view, or hide security levels for all BIOS menu items. Restore the default - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 120
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. Navigation and to select File > Save Changes And Exit. Then follow the instructions on the screen. Your preferences go into effect when the computer - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 121
NOTE: Your password settings and security settings are not changed when you restore the factory settings. Computer Setup menus The menu tables in this section provide an overview of Computer Setup options. NOTE: Some of the Computer Setup menu items listed in this chapter may not be supported by - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 122
supported by your computer. Select Setup Password Power-On Password Password Options DriveLock Passwords System IDs Disk Sanitizer To do this Enter, change, or delete a setup password. Enter, change, or delete a power-on password. ● Enable/disable stringent security. ● Enable/disable the password - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 123
Diagnostics menu Select HDD Self-Test Options Memory Check To do this Run a comprehensive self-test on any hard drive in the system or on any optional MultiBay hard drive. Run a comprehensive check on system memory. Computer Setup in Linux 115 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 124
computer. ● Enable/disable BIOS DMA data transfers. ● Enable/disable fan always on while connected to an AC outlet. ● Enable/disable data execution prevention. ● Enable/disable LAN power saving mode. ● Enable/disable SATA Native Mode. ● Enable/disable Dual Core CPU. ● Enable/disable HDD translation - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 125
/disable embedded WLAN Device Radio. ● 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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 126
(1.07 to 1.39 in) 27.0 to 35.0 cm (1.07 to 1.38 in) Weight ● With 6-cell battery, no WWAN, no Bluetooth, no modem, one memory module, and optical disk drive < 2.15 kg (4.74 lbs) ● With 6-cell battery, no WWAN, no Bluetooth, no < 2.02 kg (4.45 lbs ) modem, one memory module; without optical disk - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 127
standards specify thermal limits for plastic surfaces. The computer operates well within this range of temperatures. 33.8-cm (13.3-in) display specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration Backlight Character - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 128
colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration Backlight Character display Total power consumption Viewing angle 17.6 cm (17.6 cm vertical (typical) Hard drive specifications Dimensions Height Width Weight Interface type Transfer rate Security Seek times (typical read - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 129
capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. NOTE: Certain restrictions and exclusions apply. Contact technical support for details. DVD ROM Drive specifications Applicable disc Random access time DVD CD Cache buffer Data transfer rate CD-R (24X - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 130
24X CD-R 16X CD-RW 8X DVD+R 4X DVD+RW 8X DVD-R 4X DVD-RW 2.4X DVD+R(9) 5X DVD-RAM Transfer mode 3,600 KB/sec 2,400 KB/sec 10,800 KB/sec 5,400 KB/sec 10,800 KB/sec 5,400 KB/sec 2,700 KB/sec 6,750 KB/sec Multiword DMA Mode Blu-ray ROM with LightScribe DVD±R/RW SuperMulti DL Drive specifications - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 131
Applicable disc 1X BD-ROM 1X BD-R read 1X BD-RE read Transfer mode 4,500 KB/sec 4,500 KB/sec 4,500 KB/sec Multiword DMA Mode Blu-ray ROM with LightScribe DVD±R/RW SuperMulti DL Drive specifications 123 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 132
manually change the resource settings in Device Manager to be sure each setting is unique. CAUTION: Improperly changing resource settings can disable ● Resources by type ● Resources by connection To view resource settings in Windows XP: 1. Select Start > My Computer, or double-click My Computer on - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 133
instructions, perform a search for these topics in Help and Support. NOTE: In case of system instability, HP initial backup immediately after software setup. As you add new software and data files, you ● Save customized settings that appear in a window, toolbar, or menu bar by taking a screen shot - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 134
Start>All Programs>Maintenance>Backup and Restore. 2. Follow the on-screen instructions to set up your backup, create a system image (select models only), or or password for tasks such as installing software, running utilities, or changing Windows settings. Refer to Help and Support for more - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 135
operating system and HP programs and drivers that were installed at the factory. Software not installed at displayed on the screen. 5. Follow the on-screen instructions. NOTE: Windows 7 provides additional recovery tools through the operating system. For additional information, go to Help and Support - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 136
have to reset your preferences. To create a screen shot: 1. Display the screen you want to save. 2. Copy the screen image: To copy only the active window, press alt or password for tasks such as installing software, running utilities, or changing Windows settings. Refer to Help and Support for - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 137
to improve the security of your computer. You may be prompted for your permission or password for tasks such as installing software, running utilities, or changing Windows settings. Refer to Help and Support for more information. To recover your information using Startup Repair, follow these steps - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 138
are permanently removed. The f11 recovery tool reinstalls the operating system and HP programs and drivers that were installed at the factory. Software not installed at the factory must be reinstalled. To recover the original hard drive image using f11, follow these steps: 1. If possible, back up - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 139
and folders ● Scheduling automatic backups ● Creating recovery points ● Recovering information NOTE: For detailed instructions, perform a search for these topics in Help and Support. NOTE: In case of system instability, HP recommends that you print the recovery procedures and save them for later use - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 140
installed on the computer are permanently removed. The recovery process reinstalls the original operating system, software, and drivers. Software, drivers, and updates not installed by HP must be manually reinstalled. To recover your operating system and programs, follow these steps: 1. If possible - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 141
computer are permanently removed. The f11 recovery tool reinstalls the original operating system and HP programs and drivers that were installed at the factory. Software, drivers, and updates not installed by HP must be manually reinstalled. Personal files must be restored from a backup. To recover - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 142
8 Connector pin assignments Audio-in (microphone) Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground 134 Chapter 8 Connector pin assignments - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 143
Audio-out (headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel 3 Ground Audio-out (headphone) 135 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 144
External monitor Pin 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 136 Chapter 8 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 145
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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 146
RJ-11 (modem) Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused 138 Chapter 8 Connector pin assignments - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 147
RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused RJ-45 (network) 139 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 148
Universal Serial Bus Pin Signal 1 +5 VDC (4.75 V minimum under a continuous 0.5-A load) 2 Data - 3 Data + 4 Ground 140 Chapter 8 Connector pin assignments - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 149
eSATA/USB Pin Signal 1 USB +5 VDC 2 USB Data - 3 USB Data + 4 USB Ground S1 eSATA Ground S2 eSATA Transmit Data A+ S3 eSATA Transmit Data A- S4 eSATA Ground S5 eSATA Receive Data B- S6 eSATA Transmit Data B+ S7 eSATA Ground eSATA/USB 141 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 150
9 Power cord set requirements The wide range input 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 meets the requirements for use in the country or region where the - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 151
Country/region Accredited agency Applicable note number Sweden SEMKO 1 Switzerland SEV 1 Taiwan BSMI 4 The United Kingdom BSI 1 The United States UL 2 1. The flexible cord must be Type HO5VV-F, 3-conductor, 1.0-mm² conductor size. Power cord set fittings (appliance coupler and wall - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 152
-life. Disposal of mercury may be regulated because of environmental considerations. For disposal or recycling information, contact your local authorities, or see the Electronic Industries Alliance (EIA) Web site at http://www.eiae.org. This section provides disassembly instructions for the display - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 153
Perform the 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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 154
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 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 155
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. 15. Remove - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 156
to avoid damaging this component and causing exposure to the mercury. 17. Remove the backlight frame from the display panel. 18. Remove the backlight from the backlight frame. 19. Disconnect the display panel cable (1) from the LCD panel. 20. Remove the screws (2) that secure the LCD panel to the - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 157
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. Display 149 - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 158
Windows Vista 128 Windows XP 131 Backup and Restore 125, 126 Backup and Restore Center 127, 128 base enclosure, spare part number 28 battery removal 49 spare part number 28, 49 battery bay 17 battery release latches, identifying 17 battery, identifying 20 bays battery 17 BIOS administrator password - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 159
applications 13 Windows logo 13 L language, changing in Computer Setup 110 latches, battery release 17 legacy support, USB 98, 103, 104, 110, 112 , 116 lights AC adapter 16 caps lock 11 drive 14 optical drive 15 power 11 QuickLook 11 QuickWeb 11 TouchPad 10, 11 webcam 18 M mass storage devices - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 160
46 palm rest removal 64 spare part number 25, 64 spare part numbers 64 panels, product description 1 passwords 101, 108, 114 11 R recovering 126 recovery partition 130 release latches, battery 17 removal/replacement preliminaries 43 procedures 48 reset of HP ProtectTools security keys 108 152 Index - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 161
108 DriveLock 108 HP Sparekey 108 HP Sparekey enrollment 108 password policy 108 set up BIOS administrator password 108 System IDs 108 user management 108 security, product description 5 serial number label, location 21, 48 service considerations 43 serviceability, product description 8 set - HP ProBook 4420s | HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 162
HP ProBook 4320s Notebook PC
HP ProBook 4321s Notebook PC
HP ProBook 4420s Notebook PC
HP ProBook 4421s Notebook PC
Maintenance and Service Guide
SUMMARY
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.