HP 6820S SERVICE MANUAL PDF

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The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. 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 up a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow.

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Table of contents 1 Product description 2 External component identification Top components TouchPad scroll zone Scrolls manuwl or down. All wireless devices are off. Keys Item Component Function Displays system information when pressed in combination with the key. Executes frequently used system functions when pressed in combination with a function key or the key.

Windows logo key Displays the Windows Start menu. Windows applications key Displays a shortcut menu for items beneath the pointer. Front components Item Component Function Audio-out headphone jack Produces sound when connected to optional powered stereo speakers, headphones, ear buds, a headset, or television servlce.

Audio-in microphone jack Connects an optional computer headset microphone, stereo array microphone, or monaural microphone. A battery is charging. A battery is close to full charge capacity. When the 8620s reaches a critical battery level, the battery light begins blinking rapidly.

Battery release latches 2 Release the battery from the battery bay. Memory module compartment Contains 2 memory module slots. Vents 4 Enable airflow to cool internal components.

The computer fan starts up automatically to cool internal components and prevent overheating. Illustrated parts catalog Serial number location When ordering parts or requesting information, provide the computer serial number and model number located on the bottom of the computer.

HP Compaq 6820s Maintenance And Service Manual

Item Description Spare part number Display assemblies include 2 wireless antenna transceivers and cables Display bezel Display enclosure includes 2 WLAN antenna transceivers and cables Display hinges includes left and right manuxl Display inverter The modem module spare part kit does not include a modem module cable.

The jp module cable is included in the Cable Kit, spare part number See Cable Kit on page 19 for more Cable Kit spare part number information. Sequential part number listing Spare part Description number Nylon carrying case Power cord for use in the United States Power cord for use in Australia and New Zealand Power cord for use in Europe, the Middle East, Africa Power cord for use in the United Kingdom Spare part Description number Battery connector board Display inverter 6820x AC adapter Chapter 3 Illustrated parts catalog Removal and replacement procedures Servoce replacement requirements Tools required You will need the following tools to complete the removal and replacement procedures: When servicing the computer, be sure that cables are placed in their proper locations during the reassembly process.

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Improper cable manyal can damage the computer. Cables must be handled with extreme care to avoid damage. Apply only the tension required to unseat or seat the cables during removal and insertion.

Grounding guidelines Electrostatic discharge damage Electronic components are sensitive to electrostatic discharge ESD. Circuitry design and structure determine the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many cases, ESD contains enough power to alter device parameters or melt silicon junctions.

A discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry. Packaging and transporting guidelines Follow these grounding guidelines when packaging and transporting equipment: To avoid hand contact, transport products in static-safe tubes, bags, or boxes. Equipment guidelines Grounding equipment must include aervice a wrist strap or a foot strap at a grounded workstation.

When seated, wear a wrist strap connected to a grounded system. To provide proper ground, wear a strap snugly against the skin at all times. Unknown user password If the computer you are np has an unknown user password, follow these steps to clear the password: These steps also clear CMOS. Shut down the computer.

If you are unsure whether the computer is off or in Hibernation, up the computer on, and then shut it down through the operating system. Make special note of each screw size and location during removal and replacement.

Serial number Report the computer serial number to HP when requesting information or ordering spare parts. The serial number is mznual on the bottom of the computer. Computer feet The computer feet are adhesive-backed rubber pads. The feet are included in the Rubber Kit, spare part number There are 6 aervice feet that attach to the base enclosure in the locations illustrated below. Chapter 4 Removal and replacement procedures Battery Description Spare part number 6-cell, Wh Li-ion battery Before disassembling the computer, follow these steps: Disconnect all external devices manuaal to the computer.

All hard drive spare part kits include aervice hard drive bracket. Description Spare part number GB, rpm hard drive GB, rpm hard drive GB, rpm hard mnaual GB, rpm hard drive Before disassembling the computer, follow these steps: Grasp the Mylar tab 2 on the hard drive and slide the hard drive 3 to the left to disconnect it from the system board.

Remove the hard drive 4 from the hard drive bay. If it is necessary to replace the hard drive bracket, remove the two Phillips PM3. Remove the WLAN module: Position the computer with the front toward you. Loosen the Phillips PM2.

Lift the right side of the WLAN module compartment cover 2 servixe, swing it to left, and remove the cover. Reverse this procedure to install the WLAN module. Remove the memory module 2 by pulling the module away from the slot at an angle.

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Memory modules are designed with a notch 3 to prevent incorrect installation into the memory module slot. Reverse this procedure to install a memory module. All optical drive spare part kits include an optical drive bezel.

Insert a flat-bladed screwdriver or similar tool into the optical drive tab access 2 and press the tab to the left to release the optical drive from the computer. Remove the optical drive 3 from the computer. If it is necessary to replace the optical drive bracket, position the optical drive with the rear toward 6280s. Switch cover and keyboard Description Spare part number Switch cover includes button board and cable Keyboards for use in the following countries or regions: Remove the switch cover and keyboard: Remove the following screws: Turn the computer display-side up, with the front toward you.

Open the computer as far as possible. Lift the switch cover 1 straight up until it disengages from the computer, and slide it back 2 until it rests on the display assembly.

Lift the rear edge of the keyboard 1 until it rests at an angle, and slide it back 2 until it rests on the display assembly and switch cover. 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.

Release the ZIF connector 1 to which the button board cable is attached, and disconnect the button board cable 2 from the system manjal.

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Speaker Description Spare part number Speaker Before removing the speaker, follow these manyal Display lid switch module NOTE: The display lid switch module is included in the Cable Kit, spare part number Cable Kit, spare part number Before removing the display lid switch module, follow these steps: All display assembly spare part kits include 2 WLAN antenna transceivers and cables.

Description Servvice part number Lift 6820 display assembly 2 straight up and remove it. If it is necessary to replace the display bezel, display inverter, or display hinges, remove the eight rubber screw covers 1 and the eight Torx T8M2. Remove the display bezel 3. The display bezel is available using spare part number If it is necessary to replace the display inverter, remove the inverter 1 from the display enclosure as far as the display panel cable and the backlight cable will allow.

Disconnect the display panel cable 2 and the backlight cable 3 from the display inverter. Remove the display panel 2. Remove the four Phillips PM2. Remove the display hinges 2. The left and right display hinges are available using spare part number