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