HP DV3 manual RTC battery

Page 65

RTC battery

NOTE: Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared.

Description	Spare part number

RTC battery (includes double-sided tape)	486835-001

Before removing the RTC battery, 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 32).

Remove the RTC battery:

1.Turn the computer upside down, and remove the WLAN module cover (see WLAN module on page 33).

2.Disconnect the RTC battery cable (1) from the system board.

3.Remove the RTC battery (2).

NOTE: The RTC battery is attached to the system board with double-sided tape.

Reverse this procedure to install the RTC battery.

Component replacement procedures 57

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Contents HP Pavilion dv3 Entertainment PC First Edition December Document Part Number Safety warning notice Iv Safety warning notice Table of contents Setup Utility Power cord set requirements 102 Category Description Product descriptionOptical drives WirelessCamera MicrophoneOperating system Preinstalled Power requirementsServiceability End-user replaceable parts DockingTop components External component identificationDisplay components Component DescriptionButtons and fingerprint reader select models only Panel System and Maintenance Power OptionsKeys Fn key Lights Hardware and Sound Mouse TouchPadRight-side components Front componentsLeft-side components Bottom components Serial number location Illustrated parts catalogDescription Spare part number Computer major componentsRTC battery Power connectorKeyboard TouchPad on/off button boardBluetooth module BatteryWlan module Memory moduleDisplay assembly components Display assembly componentsDisplay Screw Kit not illustrated Display hinge coversDisplay enclosure Item Description Spare part number Plastics Kit 506953-001 Plastics KitMass storage devices Miscellaneous parts Power cordPFC HP Smart Adapter Screw KitSpare part Description Number Sequential part number listingSequential part number listing Preliminary replacement requirements Removal and replacement proceduresService considerations Tools requiredCables and connectors Event 10% 40% 55% Grounding guidelinesTypical electrostatic voltage levels Packaging and transporting guidelines Material Use Voltage protection level Equipment guidelinesUnknown user password Serial number Component replacement proceduresComputer feet Battery Wlan module Page Optical drive Memory module Page Hard drive Page Keyboard and switch cover Page Page Display assembly Page Page Page Page Page Cable Top cover506241-001 Page Fingerprint reader board System board Page Description Spare part number Speakers 506955-001 SpeakersBluetooth module Page RTC battery Fan/heat sink assembly Page Processor Page Changing the language of the Setup Utility Setup UtilityStarting the Setup Utility Displaying system information Navigating and selecting in the Setup UtilityRestoring default settings in the Setup Utility Setup Utility menus Exiting the Setup UtilityMain menu Security menuPrimary Hard Disk Self Test System Configuration menuDiagnostics menu Metric SpecificationsComputer specifications Inch, WXGA, BrightView display specifications 500-GB 400-GB 320-GB 250-GB 160-GB Hard drive specificationsTransfer mode Access timeApplicable disc Read WriteSystem memory map specifications System DMA specificationsHardware DMA System function Size Memory address System functionHardware IRQ System function System interrupt specificationsAddress hex System function shipping configuration System I/O address specificationsVGA Color Quantity Length Thread Head diameter Black Screw listingPhillips PM2.0×2.0 broadhead screw Color Quantity Length Thread Head diameter Silver Phillips PM2.0×3.0 captive screwPhillips PM2.0×4.0 screw Phillips PM2.0×8.0 captive screw Phillips PM2.5×4.0 screw Page Phillips PM2.5×5.0 screw Page Phillips PM2.5×6.0 captive screw Where usedPhillips PM2.5×7.0 screw Page Creating recovery discs Backup and recoveryRecovering system information Backing up your information When to back upWhen to create restore points Using system restore pointsRecovering from the recovery discs Performing a recoveryPage Pin Signal Connector pin assignmentsAudio-in microphone Audio-out headphoneRed analog RJ-45 network RJ-11 modemUniversal Serial Bus Requirements for all countries or regions Power cord set requirementsCountry/region Accredited agency Applicable note number Requirements for specific countries or regionsDisplay BatteryRecycling Page Page Page Page Page Index Symbols/NumericsPage Hdmi System DMA