HP 4720S, 4520S manual Power connector assembly

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3.Lift the R-11 connector (2) from its holder and out of the base enclosure.

Reverse this procedure to install the RJ-11 connector assembly.

Power connector assembly

NOTE: The power connector assembly is included in the Base Cable Kit, spare part number 603188-0001 for computers with 17.3-in displays and 599807-001 for computers with 15.6-in displays.

Before removing the power connector assembly, follow these steps:

1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.

2.Disconnect all external devices connected to the computer.

3.Disconnect the power from the computer 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 55).

5.Remove the following components:

a.Switch cover and keyboard (see Switch cover and keyboard on page 56)

b.Optical drive (see Optical drive on page 61)

c.Power button board cable (see Power button board on page 63)

d.Speakers (see Speakers on page 65)

120 Chapter 4 Removal and replacement procedures

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Contents HP ProBook 4520s Notebook PC HP ProBook 4720s Notebook PC First Edition March Document Part Number MSG revision history Revision Publication date DescriptionIv MSG revision history Safety warning notice Vi Safety warning notice Table of contents Computer Setup 122 Specifications 132 Recycling 157 Battery Display Index 163 Product description ProcessorsProduct description Memory Category Description HP ProBook 4520s UMA 4720s DiscreteHard drives Audio/visual Optical drivesDiskette drive ModemCards External mediaPorts Keyboard PowerOperating system Preinstalled with Microsoft Office Pointing devicesCategory Description HP ProBook 4520s UMA 4720s Discrete Restore media Web SupportPage TouchPad Top ComponentsComponent Description Lights Buttons, switches, and speakers select models only Keys Fn keyFront components Right-side components Left-side componentsBottom components Display Wireless antennas ComponentAdditional hardware components Service tag Illustrated parts catalogItem Description Computer major componentsFor use only with computers with 17.3-in displays Illustrated parts catalog Speakers Power button boardThermal shield Top coverDescription Bluetooth module Fan/heat sink assemblyBroadcom 4312G 802.11b/g WiFi adapters Broadcom 4322 AGN, 802.11a/b/g/n 593836-001 Intel Core processors Memory module BatteryModem module Base enclosure750-GB, 5400-rpm 598699-001 640-GB, 5400-rpm 617667-001 Description Spare part number Display bezel Display assembly componentsWebcam module Description Spare part number Display Hinge Kit Plastics KitLCD Cable Kit with webcam cable Cable Kits Description Spare part number Base Cable KitDescription Spare part number Misc LCD Cable Kit Display cable, HD+ 629030-001Mass storage devices Description Spare part numberMiscellaneous parts Item Description Spare part numberDescription Spare part number Screw Kit, includes 598672-001 Sequential part number listing Spare part Description NumberSequential part number listing Illustrated parts catalog 598670-001 Illustrated parts catalog Sequential part number listing Illustrated parts catalog Sequential part number listing 617667-001 640-GB, 5400-rpm hard drive Sequential part number listing Service considerations Preliminary replacement requirementsTools required Cables and connectors Grounding guidelines Electrostatic discharge damagePackaging and transporting guidelines Equipment guidelines Material Use Voltage protection levelComponent replacement procedures Service tagComputer feet Battery Switch cover and keyboard Page Page Page Memory module Optical drive Page Power button board Page Speakers Page Thermal shield Page Page Wlan module Intel Centrino Wireless-N1000 802.11 b/gBroadcom 4312 802.11b/g Wlan modules Intel Wi-Fi Link 1000, 802.11b/g/n Wlan module Adapter Component replacement procedures Page Page Wwan module Page Heat sink and fan Page Page Page Page Intel Pentium processors ProcessorDescription Spare part number Intel Core processors Intel Celeron processorPalm rest Description Spare part number Page Hard drive Page Display assembly on computers with 17.3-in displays Page Page Page Page Page Page Display assembly on computers with 15.6-in displays Description Spare part number Page Page Page Page Page Top cover Page Page Page RTC battery Description Spare part number RTC batteryPage Bluetooth module Modem module Page Audio board Page System board Page Page USB connector assembly Remove the thermal shield see Thermal shield on RJ-11 connector assembly Power connector assembly Page Starting Computer Setup Computer SetupUsing Computer Setup Restoring factory settings in Computer Setup Computer Setup menus Select To do thisIgnore Changes and Exit Security menu System Configuration menu Use of a USB keyboard in Computer Setup even Select Computer Setup Enable/disable the eSATA port select models only Computer specifications Display specifications 39.1 cm 21.0 cm35.98 cm Viewing angle @ CR10Hard drive specifications Applicable disc DVD-ROM Drive specificationsAccess time Cache bufferApplicable disc Read DVD±RW Double-Layer Combo Drive specificationsTransfer mode WriteApplicable disc Read Write CD-DA, CD+EG, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XAOverview Backup and recovery in WindowsBacking up your information Select Start All Programs Maintenance Backup and Restore Performing a recovery Using the Windows recovery toolsUsing f11 Using a Windows 7 operating system DVD purchased separatelyBackup and recovery in Windows Vista Performing a recovery Using the Windows recovery tools Follow the on-screen instructions Backup and recovery Backup and recovery in Windows XP Recovering your information Page Audio-in microphone Pin SignalAudio-out headphone External monitor Hdmi RJ-11 modem RJ-45 network Universal Serial BusPower cord set requirements Requirements for all countries and regionsRequirements for specific countries and regions Country/region Accredited agency Applicable note numberBattery RecyclingPage Page Page Page Page Index HP QuickLook light USB DVD
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4720S, 4520S specifications

The HP ProBook 4720s is a well-engineered business laptop that combines performance, durability, and affordability, making it suitable for professionals and small business owners alike. Introduced as part of the HP ProBook series, this model stands out for its robust build quality and essential features tailored to meet the demands of various work environments.

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