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compaq evo notebook n800c series User Manual

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    							1–16Maintenance and Service Guide
    Product Description
    1.5 Design Overview
    This section presents a design overview of key parts and features 
    of the computer. Refer to Chapter 3, “Illustrated Parts Catalog,” 
    to identify replacement parts, and Chapter 5, “Removal and 
    Replacement Procedures,” for disassembly steps. The system 
    board provides the following device connections:
    ■Memory expansion board
    ■Hard drive
    ■Display
    ■Keyboard/TouchPad or pointing stick
    ■Audio
    ■Intel Mobile Pentium 4 processors with SpeedStep 
    technology
    ■Fan
    ■PC Card
    ■Modem or modem/NIC
    The computer uses an electrical fan for ventilation. The fan is 
    controlled by a temperature sensor and is designed to turn on 
    automatically when high temperature conditions exist. These 
    conditions are affected by high external temperatures, system 
    power consumption, power management/battery conservation 
    configurations, battery fast charging, and software applications. 
    Exhaust air is displaced through the ventilation grill located on 
    the left side of the computer.
    ÄCAUTION: To properly ventilate the computer, allow at least a 
    3-inch (7.6 cm) clearance on the left and right sides of the 
    computer.
    268135-002.book  Page 16  Thursday, October 24, 2002  4:10 PM 
    						
    							Maintenance and Service Guide2–1
    2
    Troubleshooting
    ÅWARNING: Only authorized technicians trained by Compaq should 
    repair this equipment. All troubleshooting and repair procedures 
    are detailed to allow only subassembly/module level repair. 
    Because of the complexity of the individual boards and 
    subassemblies, no one should attempt to make repairs at the 
    component level or to make modifications to any printed wiring 
    board. Improper repairs can create a safety hazard. Any indication 
    of component replacement or printed wiring board modification may 
    void any warranty or exchange allowances.
    2.1 Computer Setup and Diagnostics 
    Utilities
    Selecting Computer Setup or Compaq 
    Diagnostics
    The computer features two Compaq system management utilities:
    ■Computer Setup—A system information and customization 
    utility that can be used even when your operating system is 
    not working or will not load. This utility includes settings that 
    are not available in Windows.
    268135-002.book  Page 1  Thursday, October 24, 2002  4:10 PM 
    						
    							2–2Maintenance and Service Guide
    Troubleshooting
    ■Compaq Diagnostics—A system information and diagnostic 
    utility that is used within your Windows operating system. 
    Use this utility whenever possible to:
    ❏Display system information.
    ❏Test system components.
    ❏Troubleshoot a device configuration problem in 
    Windows 2000, Windows XP Professional, or 
    Windows XP Home.
    ✎It is not necessary to configure a device connected to a USB 
    connector on the computer or an optional docking base.
    Using Computer Setup
    Information and settings in Computer Setup are accessed from 
    the File, Security, or Advanced menus:
    1. Turn on or restart the computer. Press 
    F10 while the 
    F10 = ROM Based Setup message is displayed in the 
    lower-left corner of the screen.
    ❏To change the language, press F2.
    ❏
    To view navigation information, press F1.
    ❏
    To return to the Computer Setup menu, press esc.
    2. Select the File, Security, or Advanced menu.
    3. To close Computer Setup and restart the computer:
    ❏Select File > Save Changes and Exit and press enter.
    or
    ❏Select File > Ignore Changes and Exit and press enter.
    4. When you are prompted to confirm your action, press F10.
    268135-002.book  Page 2  Thursday, October 24, 2002  4:10 PM 
    						
    							Troubleshooting
    Maintenance and Service Guide2–3
    Selecting from the File Menu
    Table 2-1
    File Menu
    Select To Do This
    System Information■View identification information about the 
    computer, a docking base, and any battery 
    packs in the system.
    ■View specification information about the 
    processor, memory and cache size, and 
    system ROM.
    Save to Floppy Save system configuration settings to a diskette.
    Restore from Floppy Restore system configuration settings from a 
    diskette.
    Restore Defaults Replace configuration settings in Computer 
    Setup with factory default settings. (Identification 
    information is retained.)
    Ignore Changes and Exit Cancel changes entered during the current 
    session, then exit and restart the computer.
    Save Changes and Exit Save changes entered during the current 
    session, then exit and restart the computer.
    268135-002.book  Page 3  Thursday, October 24, 2002  4:10 PM 
    						
    							2–4Maintenance and Service Guide
    Troubleshooting
    Selecting from the Security Menu
    Table 2-2
    Security Menu
    Select To Do This
    Setup Password Enter, change, or delete a setup password. 
    (The setup password is called an administrator 
    password in Compaq Computer Security, a 
    program accessed from the Windows Control 
    Panel.)
    Power-on Password Enter, change, or delete a power-on password.
    DriveLock Passwords Enable/disable DriveLock; change a DriveLock 
    User or Master password.
    ✎DriveLock Settings are accessible only 
    when you enter Computer Setup by 
    turning on (not restarting) the computer.
    Password Options
    Password options can be 
    selected only when a 
    power-on password has 
    been set.Enable/Disable:
    ■QuickLock
    ■QuickLock on Suspend
    ■QuickBlank
    ✎To enable QuickLock on Suspend or 
    QuickBlank, you must first enable 
    QuickLock.
    Device Security Enable/Disable:
    ■Ports or diskette drives*
    ■Diskette write*
    ■CD-ROM or diskette startup
    ✎Settings for a DVD-ROM can be 
    entered in the CD-ROM field.
    System IDs Enter identification numbers for the computer, 
    a docking base, and all battery packs in the 
    system.
    *Not applicable to SuperDisk LS-120 drives.
    268135-002.book  Page 4  Thursday, October 24, 2002  4:10 PM 
    						
    							Troubleshooting
    Maintenance and Service Guide2–5
    Selecting from the Advanced Menu
    Table 2-3
    Advanced Menu
    Select To Do This
    Language (or press F2) Change the Computer Setup language.
    Boot Options Enable/Disable:
    ■QuickBoot, which starts the computer more 
    quickly by eliminating some startup tests. 
    (If you suspect a memory failure and want 
    to test memory automatically during startup, 
    disable QuickBoot.)
    ■MultiBoot, which sets a startup sequence 
    that can include most bootable devices and 
    media in the system.
    Device Options
    ■Enable/disable the embedded numeric 
    keypad at startup.
    ■Enable/disable multiple standard pointing 
    devices at startup. (To set the computer to 
    support only a single, usually nonstandard, 
    pointing device at startup, select Disable.)
    ■Enable/disable USB legacy support for a 
    USB keyboard. (When USB legacy support 
    is enabled, the keyboard works even when a 
    Windows operating system is not loaded.)
    ■Set an optional external monitor or overhead 
    projector connected to a video card in a 
    docking base as the primary device. (When 
    the computer display is set as secondary, 
    the computer must be shut down before 
    undocking from a docking base.)
    268135-002.book  Page 5  Thursday, October 24, 2002  4:10 PM 
    						
    							2–6Maintenance and Service Guide
    Troubleshooting
    Device Options 
    (continued)■Change the parallel port mode from EPP 
    (Enhanced Parallel Port [default]) to 
    standard, bidirectional, EPP or ECP 
    (Enhanced Capabilities Port).
    ■Set video-out mode to NTSC (default), PAL, 
    NTSC-J, or PAL-M.*
    ■Enable/disable all settings in the SpeedStep 
    window. (When Disable is selected, the 
    computer runs in Battery Optimized mode.)
    ■Specify how the computer recognizes 
    multiple identical docking bases that are 
    identically equipped. (Select Disable to 
    recognize the docking bases as a single 
    docking base; select Enable to recognize 
    the docking bases individually, by serial 
    number.)
    ■Enable/disable the reporting of the 
    processor serial number by the processor to 
    the software.
    HDD Self Test Options Run a quick comprehensive self test on hard 
    drives in the system that support the test 
    features.
    *Video modes vary even within regions. However, NTSC is common in North 
    America; PAL, in Europe, Africa, and the Middle East; NTSC-J, in Japan; and 
    PAL-M, in Brazil. Other South and Central American regions may use NTSC, 
    PAL, or PAL-M.
    Table 2-3
    Advanced Menu (Continued)
    Select To Do This
    268135-002.book  Page 6  Thursday, October 24, 2002  4:10 PM 
    						
    							Troubleshooting
    Maintenance and Service Guide2–7
    2.2 Using Compaq Diagnostics
    When you access Compaq Diagnostics, a scan of all system 
    components is displayed on the screen before the Compaq 
    Diagnostics window opens.
    You can display more or less information from anywhere within 
    Compaq Diagnostics by selecting Level on the menu bar.
    Compaq Diagnostics is designed to test Compaq components. 
    If non-Compaq components are tested, the results may be 
    inconclusive.
    Obtaining, Saving, or Printing
    Configuration Information
    1. Access Compaq Diagnostics by selecting Start > Settings > 
    Control Panel > Compaq Diagnostics.
    2. Select Categories, then select a category from the drop-down 
    list.
    ❏To save the information, select File > Save As.
    ❏To print the information, select File > Print.
    3. To close Compaq Diagnostics, select File > Exit.
    268135-002.book  Page 7  Thursday, October 24, 2002  4:10 PM 
    						
    							2–8Maintenance and Service Guide
    Troubleshooting
    Obtaining, Saving, or Printing Diagnostic
    Test Information
    1. Access Compaq Diagnostics by selecting Start > Settings > 
    Control Panel > Compaq Diagnostics.
    2. Select the Te s t tab.
    3. In the scroll box, select the category or device you want 
    to test.
    4. Select a test type:
    ❏Quick Test—Runs a quick, general test on each device in 
    a selected category.
    ❏Complete Test—Performs maximum testing on each 
    device in a selected category.
    ❏Custom Test—Performs maximum testing on a selected 
    device.
    ◆To run all tests for your selected device, select the 
    Check All button.
    ◆To run only the tests you select, select the Uncheck 
    All button, then select the checkbox for each test you 
    want to run.
    268135-002.book  Page 8  Thursday, October 24, 2002  4:10 PM 
    						
    							Troubleshooting
    Maintenance and Service Guide2–9
    5. Select a test mode:
    ❏Interactive Mode—Provides maximum control over the 
    testing process. You determine whether the test was 
    passed or failed and may be prompted to insert or remove 
    devices.
    ❏Unattended Mode—Does not display prompts. If errors 
    are found, they are displayed when testing is complete.
    6. Select the Begin Testing button.
    7. Select a tab to view a test report:
    ❏Status tab—Summarizes the tests run, passed, and failed 
    during the current testing session.
    ❏Log tab—Lists tests run on the system, the number of 
    times each test has run, the number of errors found on 
    each test, and the total run time of each test.
    ❏Error tab—Lists all errors found in the computer with 
    their error codes.
    8. Select a tab to save the report:
    ❏Log tab—Select the Log tab Save button.
    ❏Error tab—Select the Error tab Save button.
    9. Select a tab to print the report:
    ❏Log tab—Select File > Save As, then print the file from 
    your folder.
    268135-002.book  Page 9  Thursday, October 24, 2002  4:10 PM 
    						
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