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Compaq Presario A900 Notebook PC
Maintenance and Service Guide
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© Copyright 2007 Hewlett-Packard Development Company, L.P. Intel, Celeron, and Core are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States 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. SD Logo is a trademark of its proprietor. The information contained herein is subject to change without notice. The only warranties for HP
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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 Display components ................................................................................................................. 5 Top components ...................................................................................................................... 6 Buttons, lights, and speakers ....................................................................................... 6 Keys ..........................
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Equipment guidelines ................................................................. 31 Unknown user password .......................................................................................... 32 Component replacement procedures ........................................................................................ 33 Serial number ......................................................................................................... 33 Computer feet ................................
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System memory map specifications .......................................................................................... 86 7 Screw listing Phillips PM2.5×6.0 captive screw ............................................................................................ 88 Phillips PM3.0×4.0 screw ....................................................................................................... 89 Phillips PM2.0×4.0 screw ......................................................................
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viii
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1 Product description Category Description Computers Computers equipped with equipped with 965GM 960GL system board system board Product Name Compaq Presario A900 Notebook PC √ √ Processors Intel® Core™ 2 Duo processors: T7250 2.00-GHz processor, 800-MHz FSB, 2-MB √ L2 cache T5550 1.80-GHz processor, 667-MHz FSB, 2-MB √ L2 cache T5450 1.67-GHz processor, 667-MHz FSB, 2-MB √ L2 cache T5250 1.50-GHz processor, 667-MHz FSB, 2-MB √ L2 cache Intel Core Duo processors: T2330 1.60-GHz process
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Category Description Computers Computers equipped with equipped with 965GM 960GL system board system board Graphics Unified Memory Architecture (UMA) graphics subsystem √ √ integrated with shared system memory (dynamically allocated) ● up to 256-MB of total available graphics subsystem memory when computer system memory equals or is greater than 2048 MB ● up to 128-MB of total available graphics subsystem memory when computer system memory equals or is greater than 1024 MB ● up to 64-MB of total
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Category Description Computers Computers equipped with equipped with 965GM 960GL system board system board 12.7-mm tray load √ √ Supports the following drives: √ √ ● DVD±RW and CD-RW Super Multi Double-Layer Combo Drive with LightScribe ● DVD±RW and CD-RW Super Multi Double-Layer Combo Drive Diskette drive Supports external USB diskette drive only √ √ Web camera VGA camera, 30 frames per second √ √ Microphone Integrated omnidirectional mono microphone √ √ Audio High-definition, Azalia technolo
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Category Description Computers Computers equipped with equipped with 965GM 960GL system board system board Keyboard/ Spill-resistant 36.6-cm (14.4-inch) keyboard √ √ pointing devices TouchPad with 2 TouchPad buttons √ √ Supports 2-way scroll √ √ Taps enabled as default √ √ Power requirements 65-W AC adapter with localized cable plug support √ √ 6-cell, 2.20-Ah (47-Wh) Li-ion battery √ √ Security Security cable slot √ √ Operating system Preinstalled: Windows Vista Premium 32 √ √ Windows Vis
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2 External component identification Display components Item Component Description (1) Internal display switch Turns off the display if the display is closed while the computer is turned on. (2) Wireless antennae (3)* Send and receive signals from one or more wireless devices. NOTE: The antennae are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around the antennae free from obstructions. (3) Webcam light On: The integrated camera is in use. (4)
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Top components Buttons, lights, and speakers Item Component Description (1) Speakers (2) Produce sound. (2) Wireless button Turns the wireless feature on or off, but does not establish a wireless connection. NOTE: To establish a wireless connection, a wireless network must already be set up. (3) Caps lock light On: Caps lock is on. (4) Wireless light ● Blue: An integrated wireless device, such as a WLAN device, is turned on. ● Amber: An integrated wireless device is turned off. Drive light Blink
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Item Component Description (8) Power button ● When the computer is off, press the button to turn on the computer. ● When the computer is on, press the button to initiate Sleep. ● When the computer is in the Sleep state, press the button briefly to exit Sleep. ● When the computer is in Hibernation, press the button briefly to exit Hibernation. If the computer has stopped responding and Windows® shutdown procedures are ineffective, press and hold the power button for at least 5 seconds to turn off
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Keys Item Component Function (1) fn key Executes frequently used system functions when pressed in combination with a function key or the esc key. (2) esc key Displays system information when pressed in combination with the fn key. (3) Function keys Execute frequently used system functions when pressed in combination with the fn key. (4) Integrated numeric keypad keys Can be used like the keys on an external numeric keypad. (5) Windows applications key Displays a shortcut menu for items beneath t
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Pointing devices Item Component Function (1) TouchPad light ● Blue: TouchPad is enabled. ● Amber: TouchPad is disabled. (2) TouchPad* Moves the pointer and selects or activates items on the screen. (3) TouchPad horizontal scroll zone Scrolls left or right. (4) Left TouchPad button* Functions like the left button on an external mouse. (5) Right TouchPad button* Functions like the right button on an external mouse. (6) TouchPad vertical scroll zone Scrolls up or down. (7) TouchPad on/off button En
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Front 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. Right-side components Item Component Function (1) USB ports (2) Connect optional USB devices. (2) Optical drive Reads optical discs and on select models also writes to optical d
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Left-side components Item Component Function (1) Power connector Connects an AC adapter. (2) Vent Enables airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components and prevent overheating. It is normal for the internal fan to cycle on and off during routine operation. (3) RJ-11 (modem) jack Connects a modem cable. (4) RJ-45 (network) jack Connects a network cable. (5) External monitor port Connects an external VGA monitor or projector. (6) S-
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Bottom components Item Component Function (1) Battery bay Holds the battery. (2) Battery release latch Releases the battery from the battery bay. (3) Vents (3) Enable airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components and prevent overheating. It is normal for the internal fan to cycle on and off during routine operation. (4) Memory/WLAN module compartment Contains the memory module slots and the WLAN module slot. (5) Hard drive bay Hol
