compaq evo n610c and evo n600c User Manual

							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 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.
279362-001.book  Page 1  Monday, July 8, 2002  11:49 AM 
						

							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.
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.
279362-001.book  Page 2  Monday, July 8, 2002  11:49 AM 
						

							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.
279362-001.book  Page 3  Monday, July 8, 2002  11:49 AM 
						

							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.
✎Drive Lock 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 Standby
■QuickBlank
✎To enable QuickLock on Standby 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.
279362-001.book  Page 4  Monday, July 8, 2002  11:49 AM 
						

							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.)
279362-001.book  Page 5  Monday, July 8, 2002  11:49 AM 
						

							2–6Maintenance and Service Guide
Troubleshooting
Device Options 
(continued)■Change the parallel port mode from 
Enhanced Parallel Port (EPP, the default 
setting) to standard, bidirectional, EPP or 
Enhanced Capabilities Port (ECP).
■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
279362-001.book  Page 6  Monday, July 8, 2002  11:49 AM 
						

							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.
279362-001.book  Page 7  Monday, July 8, 2002  11:49 AM 
						

							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 Test 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, click 
Check All.
◆To run only the tests you select, click Uncheck All, 
then select the checkbox for each test you want 
to run.
279362-001.book  Page 8  Monday, July 8, 2002  11:49 AM 
						

							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 you 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. Click Begin Testing.
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 Save.
❏Error tab—Select Save.
9. Select a tab to print the report:
❏Log tab—Select File > Save As, then print the file from 
your folder.
279362-001.book  Page 9  Monday, July 8, 2002  11:49 AM 
						

							2–10Maintenance and Service Guide
Troubleshooting
2.3 Troubleshooting Flowcharts
Ta b l e  2 - 4
Troubleshooting Flowcharts Overview
Flowchart Description
2.1 Initial Troubleshooting
2.2 No Power, Part 1
2.3 No Power, Part 2
2.4 No Power, Part 3
2.5 No Power, Part 4
2.6 No Video, Part 1
2.7 No Video, Part 2
2.8 Nonfunctioning Docking Station
2.9 No Operating System (Os) Loading
2.10 No Os Loading From Hard Drive, Part 1
2.11 No Os Loading From Hard Drive, Part 2
2.12 No Os Loading From Hard Drive, Part 3
2.13 No Os Loading From Diskette Drive
2.14 No Os Loading From CD- Or DVD-ROM Drive
2.15 No Audio, Part 1
2.16 No Audio, Part 2
2.17 Nonfunctioning Device
2.18 Nonfunctioning Keyboard
2.19 Nonfunctioning Pointing Device
2.20 No Network Or Modem Connection
279362-001.book  Page 10  Monday, July 8, 2002  11:49 AM