HP 550 manual Switch cover

Page 56

Reverse this procedure to reassemble and install an optical drive.

Switch cover

Description

Spare part number

 

 

Switch cover (includes button board and cable)

495388-001

 

 

Before removing the switch cover, 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 39).

Remove the switch cover:

1.Turn the computer upside down, with the rear panel toward you.

2.Remove the two slotted Torx T8M2.5×9.0 screws (1) and the three Torx T8M2.5×3.0 broadhead screws (2) that secure the switch cover to the computer.

3.Turn the computer right-side up, with the front toward you.

4.Open the computer as far as possible.

5.Release the ZIF connector to which the button board cable (1) is attached, and disconnect the cable from the system board.

48 Chapter 4 Removal and replacement procedures

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Contents HP 550 Notebook PC Page Safety warning notice Iv Safety warning notice Table of contents Computer Setup Screw listing Recycling Product description Hard drives Optical drivesWireless Integrated Wlan options by way of wireless module Diskette driveAudio ModemPower requirements Operating system PreinstalledPorts Keyboard/pointingRestore media Serviceability End-user replaceable partsExternal component identification Top componentsTouchPad Component FunctionButtons, lights, and speaker Top componentsKeys Fn keyFront components Right-side components Left-side components Bottom components Wireless antennae select models only Illustrated parts catalog Serial number locationComputer major components Computer major componentsKeyboards Display assembly internal componentsDescription Spare part number Optical drive connector board FanRTC battery BatteryIntel Core2 Duo processors Intel Celeron M processorsBroadcom 802.11b/g Wlan modules Intel 802.11a/b/g Wlan modulesIntel 802.11b/g Wlan module for use in Thailand Illustrated parts catalog Plastics Kit Item Description Spare part number Plastics Kit 456614-001Cable Kit Item Description Spare part number Cable Kit 456594-001Mass storage devices Miscellaneous parts Spare part Description Number Sequential part number listingScrew Kit Ukraine, the United Kingdom, and Uzbekistan Zaire, Zambia, and Zimbabwe Illustrated parts catalog Sequential part number listing Pata Removal and replacement procedures Preliminary replacement requirementsService considerations Tools requiredCables and connectors Event 10% 40% 55% Grounding guidelinesTypical electrostatic voltage levels Packaging and transporting guidelines Equipment guidelines Material Use Voltage protection levelUnknown user password Component replacement procedures Serial numberComputer feet Battery Hard drive Page Wlan module Description Spare part number Page Memory module Optical drive Page Switch cover Page Keyboard For use Spare part numberPage Page Speaker Description Spare part number Speaker 456593-001Display lid switch module Display assembly Page Page Page Page Top cover Description Spare part number Top cover 495399-001Page Page TouchPad board and TouchPad button board Page Bluetooth module System board Page Page Page Fan Description Spare part number Fan 431312-001Page Heat sink Page Processor Page Modem module Page RTC battery Description Spare part number RTC battery 449137-001ExpressCard assembly Page Computer Setup Starting Computer SetupRestoring factory settings in Computer Setup Using Computer SetupNavigating and selecting in Computer Setup Select To do this Computer Setup menusFile menu Diagnostics menu Security menuSystem Configuration menu DisableSelect Disconnected Metric SpecificationsComputer specifications Inch, Wxga display specifications Hard drive specifications 250-GB 160-GB 120-GBAccess time Transfer modeApplicable disc Read WriteDVD/CD-RW Combo Drive specifications Applicable disc Read WriteSystem DMA specifications Hardware DMA System functionSystem interrupt specifications Hardware IRQ System functionSystem I/O address specifications Address hex System function shipping configurationVGA System memory map specifications Size Memory address System functionScrew listing Phillips PM2.0×5.0 captive screw Color Quantity Length Thread Head diameter BlackPhillips PM2.5×12.0 captive screw Color Quantity Length Thread Head diameter Silver 12.0 mmPhillips PM3.0×4.0 screw Color Quantity Length Thread Head diameter SilverPhillips PM2.5×4.0 screw Slotted Torx ST8M2.5×7.0 screw Page Phillips PM2.0×4.0 screw Page Torx T8M2.5×9.0 screw Torx T8M2.5×3.0 broadhead screw Torx T8M2.5×4.0 screw Page Phillips PM2.0×2.0 broadhead screw Torx T8M2.5×6.0 screw Color Quantity Length Thread Heat width BlackPhillips PM2.0×6.0 screw Torx T8M2.0×4.0 screw Phillips PM2.5×7.0 screw Phillips PM2.5×7.0 captive screw Phillips PM2.5×10.0 captive screw Color Quantity Length Thread Head diameter Silver 10.0 mmPhillips PM2.0×8.0 screw Backup and recovery Backing up your information Backup and recovery in Windows VistaOverview Performing a recovery Using the Windows recovery toolsUsing f11 Select Repair your computer Backup and Recovery in Windows XP Recovering your information Connector pin assignments Pin SignalAudio-out headphone Audio-in microphoneExternal monitor 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 numberDisplay BatteryRecycling Page Page Page Page Page Index Page Page DVD
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