dell latitude d400 User Manual

							Using the Dell Diagnostics: 
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Using the Dell Diagnostics 
  When to Use the Dell Diagnostics
  Features of the Dell Diagnostics
  Starting the Dell Diagnostics
When to Use the Dell Diagnostics
Whenever a major component or device in your computer does not function \
properly, 
you may have a component failure. If you are experiencing a problem with\
 your Dell™ 
computer, perform the checks in the Solving Problems section in the Users Guide 
and run the Dell Diagnostics before you call Dell for technical assistance. Running the 
Dell Diagnostics may help you to resolve the problem yourself quickly wi\
thout having 
to contact Dell for assistance.
If you are experienced with computers and know what component(s) you n\
eed to test, 
select the appropriate diagnostic test group(s) or subtest(s). If yo\
u are unsure about 
how to begin diagnosing a problem, see 
Starting the Dell Diagnostics.
Features of the Dell Diagnostics
The Dell Diagnostics helps you to check your computer hardware without a\
ny 
additional equipment and without destroying any data. By using the diagn\
ostics, you 
can have confidence in the operation of your computer. If you find a pro\
blem that you 
cannot solve by yourself, the diagnostic tests can provide you with impo\
rtant 
information you need when talking to Dells service and support personne\
l.
NOTICE: Use the Dell Diagnostics to test only your Dell computer. Using this 
program with other computers may cause incorrect computer responses or 
result in error messages. 
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							Using the Dell Diagnostics: 
The diagnostic test groups or subtests also have the following features:\
l     Options that let you perform express, extended, or custom tests on one o\
r all 
devices
l     An option that allows you to select tests based on a symptom of the prob\
lem 
you are having
l     An option that allows you to choose the number of times a test group or \
subtest 
is repeated
l     The ability to display test results
l     Options to temporarily suspend testing if an error is detected, or to te\
rminate 
testing
l     Extensive online Help that describes the tests and devices
l     Status messages that inform you whether test groups or subtests were 
completed successfully
l     Error messages that appear if any problems are detected
Starting the Dell Diagnostics
The Dell Diagnostics is located on a hidden Diagnostic utility partition\
 on your hard 
drive. 
NOTE: If your computer cannot display a screen image, contact Dell. See the 
Users Guide for contact information. 
1.  Shut down the computer. 
2.  If the computer is connected to a docking device (docked), undock it. \
See the  documentation that came with your docking device for instructions. 
3.  Connect the computer to an electrical outlet. 
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							Using the Dell Diagnostics: 
NOTE: If you do not see anything on your display, hold down the mute button 
and press the power button (instead of ) to begin the Dell Diagno\
stics. 
You do not need to highlight Diagnostics and press . The computer 
automatically runs the Pre-boot System Assessment. 
4.  Turn on the computer. When the DELL™ logo appears, press   immediately. If you wait too long and the Microsoft® Windows® logo\
 appears, 
continue to wait until you see the Windows desktop. Then shut down your \
computer and try again. 
5.  When the boot device list appears, highlight Diagnostics and press . 
The computer begins to run the Pre-boot System Assessment, a series of 
embedded diagnostics that perform initial testing on your system board, \
keyboard, hard drive, and display.
l     During the assessment, answer any questions that appear.
l     If a component failure is detected, the computer stops and beeps. To sto\
p 
the assessment and reboot to the operating system, press ; to 
continue to the next test, press ; to retest the component that faile\
d, 
press . 
l     If failures are detected during the Pre-boot System Assessment, write 
down the error code(s) and contact Dell before continuing on to the De\
ll 
Diagnostics. See the Users Guide for contact information.
l     If you receive a message stating that no Diagnostics utility partition h\
as 
been found, follow the instructions on the screen to run the Dell 
Diagnostics from your Drivers and Utilities CD.
If the Pre-boot System Assessment completes successfully, you receive th\
e 
message Booting Dell Diagnostic Utility Partition. Press any key to 
continue.
6.  Press any key to start the Dell Diagnostics from the Diagnostics utility\
 partition  on your hard drive. 
7.  After the Dell Diagnostics loads and the Main Menu screen appears, click the  button for the option you want. 
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							Using the Dell Diagnostics: 
NOTE: The Service Tag for your computer is located in the title bar of each 
screen. 
Option Function
Express Test Performs a quick test of devices. The test typically takes 10 to 20 
minutes and requires no interaction on your part. Run Express Test 
first to increase the possibility of tracing the problem quickly.
Extended Test Performs a thorough check of devices. The test typically takes 1 
hour or more and requires you to answer questions periodically.
Custom Test Tests a specific device. You can customize the tests to be run.
Symptom Tree Allows you to select tests based on a symptom of the problem you 
are experiencing. The option lists the most common symptoms.
8.  If a problem is encountered during a test, a message appears, displaying\
 the  error code and a description of the problem. Write down the error code a\
nd 
problem description and follow the instructions on the screen. If you ca\
nnot 
resolve the error condition, contact Dell. See the Users Guide for contact 
information. 
9.  If you run a test from the Custom Test or Symptom Tree option, click the  applicable tab described in the following table for more information. 
Tab Function
Results Displays the results of the test and any error conditions encountered.
Errors Displays error conditions encountered, error codes, and problem 
description.
Help Describes the test and may indicate requirements for running the 
test.
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							Using the Dell Diagnostics: 
ConfigurationDisplays your hardware configuration for the selected device.
The Dell Diagnostics obtains your configuration information for all 
devices from the system setup program, memory, and various 
internal tests and displays the information in the device list in the le\
ft 
pane of the screen (see the Users Guide for information on the 
system setup program). The device list may not display the names of 
all the components installed on your computer or all devices attached 
to your computer.
Parameters Allows you to customize the test by changing the test settings.
10.  When you have finished running a test, close the screen to return to the\
 Main  Menu screen. To exit the Dell Diagnostics and reboot the computer, close the\
 
Main Menu screen. 
Back to Contents Page
 
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							System Components: 
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System Components 
NOTICE: Only a certified service technician should perform repairs on your 
computer. Damage due to servicing that is not authorized by Dell is not \
covered 
by your warranty. 
NOTICE: Unless otherwise noted, each procedure in this document assumes 
that a part can be replaced by performing the removal procedure in rever\
se 
order. 
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							System Components: 
 
1 display P129110
smart card reader 0X740
2 keyboard P129011
hard drive
See Mini RSL
3 palm rest 4U78212
memory module cover P0777
4 speaker 4U78213
battery
See Mini RSL
5 DIMM1 cover 2X38614
computer base D2389
6 metal shield 2X37015
reserve battery 3U490
7 Hard drive controller 
card 2X372
16
display connector 2X241
8 system board
See Mini RSL 17
center control cover 5U447
9 fan 6U568 
   
Back to Contents Page
 
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							Keyboard: 
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Keyboard 
  Removing the Keyboard
  Installing the Keyboard
Removing the Keyboard
 CAUTION: Before performing the following procedures, read the safety 
instructions in your System Information Guide.
NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist 
grounding strap or by periodically touching an unpainted metal surface (\
such as 
the back panel) on the computer. 
1.  Follow the instructions in 
Preparing to Work Inside the Computer to remove 
the battery and prepare the computer for work. 
2.  Open the display approximately 180 degrees. 
3.  Use a plastic scribe or, if a plastic scribe is not available, carefully\
 use a small  flat-blade screwdriver to lift the notched right edge of the center cont\
rol cover, 
and pry the cover loose from the bottom case. 
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							Keyboard: 
 
1 center control cover 5U447
4.  Remove the two M2 x 5-mm screws from the top of the keyboard. 
5.  Use the pull-tab to pull the keyboard up and out (toward the display) \
of the  bottom case. 
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							Keyboard: 
 
1 keyboard P1290
2 keyboard pull-tab  
3 M2 x 5-mm screws (2) 1428U
4 securing tabs (5)  
6.  Rest the keyboard face down on the palm rest. 
7.  Pull straight up on the pull-tab that is attached to the keyboard connec\
tor to  disconnect the connector from the interface connector on the system boar\
d. 
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