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HP Compaq 6720t Mobile Thin Client
Maintenance and Service Guide
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© Copyright 2008 Hewlett-Packard Development Company, L.P. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. Intel and Celeron are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the U.S. and other countries. Microsoft, Windows, and Windows Vista are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. The information contained herein is subject to change
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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 optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing
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iv Safety warning notice
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Table of contents 1 Product description 2 External component identification Top components ...................................................................................................................... 3 Display .................................................................................................................... 3 Lights ....................................................................................................................... 4 Buttons and speakers .........
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Equipment guidelines ................................................................. 25 Unknown user password .......................................................................................... 26 Component replacement procedures ........................................................................................ 27 Serial number ......................................................................................................... 27 Computer feet ................................
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Phillips PM2.0×6.0 captive screw ............................................................................................ 73 Torx T8M2.5×9.0 screw ......................................................................................................... 74 Silver Phillips PM2.0×4.0 screw .............................................................................................. 76 Phillips PM2.0×3.0 screw .....................................................................................
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1 Product description Category Description Product Name HP Compaq 6720t Mobile Thin Client Processors Intel® Celeron® M423 1.06-GHz processor 1-MB L2 cache, 533-MHz front side bus (FSB) Chipset Northbridge: Mobile Intel 945GM Express chipset with up to 800-MHz FSB Southbridge: Intel ICH-7M Intel unified memory architecture (UMA) graphics subsystem with up to 224-MB shared Graphics graphics subsystem memory Panel 15.4-inch WXGA AntiGlare display assembly with 2 wireless local area network (WLAN)
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Category Description Audio-out (stereo headphone) Docking RJ-11 (modem) RJ-45 (Ethernet) USB (3) VGA (Dsub 15-pin) supporting 1600 × 1200 external resolution at 75-GHz (hot plug/unplug with auto-detect) 3-pin HP Smart Adapter AC power Keyboard/pointing devices Full-sized, spill-resistant keyboard with embedded numeric keypad TouchPad only, with 2 TouchPad buttons and vertical scrolling Power requirements 65-W HP Smart Adapter with localized cable plug support (3-wire plug with ground pin
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2 External component identification Top components Display Item Component Function (1) Wireless antennae (2) Send and receive signals from one or more wireless devices. These antennae are not visible from the outside of the computer. (2) Display release latch Opens the computer. Top components 3
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Lights Item Component Function (1) Wireless lights* (2) ● Blue: An integrated wireless device, such as a wireless local area network (WLAN) device, is on. ● Off: All wireless devices are off. (2) Power lights† (2) ● On: The computer is on. ● Blinking: The computer is in Standby. ● Off: The computer is off. (3) Battery light ● Amber: A battery is charging. ● Blue: A battery is close to full charge capacity. ● Blinking amber: A battery that is the only available power source has reached a low batt
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Item Component Function *The 2 wireless lights display the same information. The light on the wireless button is visible only when the computer is open. The wireless light on the front of the computer is visible whether the computer is open or closed. †The 2 power lights display the same information. The light on the power button is visible only when the computer is open. The power light on the front of the computer is visible whether the computer is open or closed. Buttons and speakers Item Com
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Keys Item Component Function (1) esc key Displays system information when pressed in combination with the fn key. (2) fn key Executes frequently used system functions when pressed in combination with a function key or the esc key. (3) Windows logo key Displays the Windows Start menu. (4) Windows applications key Displays a shortcut menu for items beneath the pointer. (5) Numeric keypad keys Can be used like the keys on an external numeric keypad. (6) Function keys Execute frequently used system
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TouchPad Item Component Function (1) TouchPad* Moves the pointer and selects or activates items on the screen. (2) Left TouchPad button* Functions like the left button on an external mouse. (3) Right TouchPad button* Functions like the right button on an external mouse. (4) TouchPad scroll zone Scrolls up or down. *This table describes factory settings. To view or change pointing device preferences, select Start > Control Panel > Printers and Other Hardware > Mouse. Top components 7
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Front components Item Component Function (1) Wireless light ● On: An integrated wireless device, such as a wireless local area network (WLAN) device, is on. ● Off: All wireless devices are off. (2) Power light ● On: The computer is on. ● Blinking: The computer is in Standby. ● Off: The computer is off. (3) Battery light ● Amber: A battery is charging. ● Blue: A battery is close to full charge capacity. ● Blinking amber: A battery that is the only available power source has reached a low battery
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Right-side components Item Component Function (1) Audio-out (headphone) jack Produces sound when connected to optional powered stereo speakers, headphones, ear buds, a headset, or television audio. (2) Audio-in (microphone) jack Connects an optional computer headset microphone, stereo array microphone, or monaural microphone. (3) USB ports (2) Connect optional USB devices. (4) Optical drive (select models only) Reads an optical disc. Left-side components Item Component Function (1) Security cabl
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Rear components Item Component Description (1) Power connector Connects an AC adapter. (2) External monitor port Connects an external VGA monitor or projector. Bottom components Item Component Function (1) Battery bay Holds the battery. (2) Battery release latches (2) Release the battery from the battery bay. (3) Accessory battery connector Connects an optional accessory battery. (4) Business card holder Holds a standard-size business card. (5) Memory module compartment Contains the memory modul
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3 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. Serial number location 11
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Computer major components Item Description Spare part number (1) 15.4-inch, WXGA, antiglare display assembly (includes display panel cable and 2 467783-001 wireless antenna transceivers and cables) Display internal components: Display bezel 466164-001 12 Chapter 3 Illustrated parts catalog
