compaq contura 400 family User Manual

							light up at all and
Power-On-Self-Test
(POST) does not
complete when the
unit is powered
up. ****
---------------------------------------------------------------------------
** When using an external monitor and simultaneously displaying an image
on the internal display, the image on the external monitor may not
fill the screen.
**** Blocks usually appear in an even fraction of the display (1/2, 1/4/,
1/6, 1/8, etc.)
---------------------------------------------------------------------------
Problem Probable Cause Solution(s)
---------------------------------------------------------------------------
Backlight Power conservation Verify that you are not in
(brightness) cannot mode settings are a power conservation mode
be adjusted with set high, causing that limits the output of
brightness control a dim display. the backlight.
pop-up Fn + F9
keys. *
---------------------------------------------------
Improper display 1. Reseat the display
cable connections. cable to the inverter
board.
2. Reseat the display cable
to the system board.
---------------------------------------------------
Defective inverter Replace the inverter board.
board. ***
---------------------------------------------------
Defective display Replace the display cable.
cable. ***
---------------------------------------------------
Defective system Replace the system board.
board. ***
---------------------------------------------------------------------------
Contrast cannot be Improper display Reseat the display cable
adjusted with the cable connections. to the following one at a
Fn + F8 keys. * time until the problem is
solved:
a. Inverter board.
b. System board.
c. Display panel.
---------------------------------------------------
Defective inverter Replace the inverter board.
board. ***
---------------------------------------------------
Defective display Replace the display cable.
cable. ***
---------------------------------------------------
Defective display Replace the display panel.
panel. ***
---------------------------------------------------------------------------
The display panel has Improper display Reseat the display cable to
a continuous pattern cable connections. the following until the
across it (e.g., a problem is solved: 
						

							jailbars pattern), a. System board
has a single color b. Display panel
on it, or has garbled c. Inverter board
graphics across the ---------------------------------------------------
entire panel. This Defective display Replace the display cable.
failure is for cable
patterns across the ---------------------------------------------------
entire panel (not Defective inverter Replace the inverter board.
just on one section). board.
---------------------------------------------------
Defective system Replace the system board.
board.
---------------------------------------------------------------------------
A single line, small Defective display Replace the display panel.
group of lines, or panel
block appears on the
display panel. This
failure occurs in
only a section of the
display panel. ****
---------------------------------------------------------------------------
A number of single Acceptable according Check the number of pixels
pixels are out or to specifications. that are out against Compaq
dots of various specifications. A certain
colors are visible number of pixels are
on a black screen. allowed to be out, due to
limitations in LCD
technology.
---------------------------------------------------
Defective display If the number of pixels
panel. that are out is beyond
Compaq specifications,
replace the display panel.
---------------------------------------------------
Defective system Replace system board.
board.
---------------------------------------------------------------------------
* Press the Fn + F9 keys to adjust the brightness, setting.
Additionally, on the MSTN and CSTN models, press the Fn + F8 keys to
adjust the contrast setting.
** When using an external monitor and simultaneously displaying an image
on the internal display, the image on the external monitor may not
fill the screen.
*** This problem indicates that the backlight or its power circuitry has
failed. Since you cannot observe the POST results on the display panel
when the backlight is not functioning, connect the unit to an external
monitor before powering the unit up. If an external monitor is not
available, verify that POST completes by listening for the single or
double beep, and watching for the indicators to turn on at the top of
the keyboard.
**** Blocks usually appear in an even fraction of the display (1/2, 1/4,
1/6, 1/8, etc.).
===========================================================================
Table 5-18. Solving Diskette/Diskette Drive Problems
===========================================================================
Problem Probable Cause Solution(s) 
						

							===========================================================================
Diskette drive Diskette is damaged. Run CHKDSK on the diskette.
indicator stays on. At the system prompt, type:
CHKDSK A:
---------------------------------------------------
Software program is Check the program
damaged. diskettes.
---------------------------------------------------------------------------
Diskette drive cannot Diskette is Disable the diskettes
write to a diskette. write-protected. write-protect feature or
use a diskette that is not
write-protected.
---------------------------------------------------
Computer is writing Check the drive letter in
to the wrong drive. the path statement.
---------------------------------------------------
Drive error has Run Computer Checkup.
occurred.
---------------------------------------------------
Diskette is not Format the diskette.
formatted.
---------------------------------------------------------------------------
Diskette drive cannot The wrong type of Use the type of diskette
read a diskette. diskette is being required by the drive.
used.
---------------------------------------------------
Diskette has a bad Copy files to hard drive or
sector. another diskette. Reformat
bad diskette.
---------------------------------------------------
Drive error has Run Computer Checkup.
occurred.
---------------------------------------------------
Diskette is not Format the diskette.
formatted.
===========================================================================
Table 5-19. Solving Hard Drive Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Reading hard drive System entered Give the system time to
takes an unusually Hibernation due to restore the previously
long time after low battery condition saved data to its exact
restarting the and is now exiting state before Hibernation.
computer. from it.
---------------------------------------------------------------------------
Hard drive error Hard drive has bad Run Computer Checkup.
occurs. sectors or has
failed.
---------------------------------------------------------------------------
Hard drive does not Hard drive is not Turn off and unplug the
work. seated properly. computer, remove the
battery pack, and remove
and then reinsert the hard
drive.
---------------------------------------------------------------------------
Hard drive was Turn off computer then turn
removed and replaced it on again. Before
while computer was removing the hard drive, 
						

							on, in Standby, or in make sure computer is off,
Hibernation. unplugged, and the battery
pack is removed.
===========================================================================
Table 5-20. Solving External Device Installation Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
A new device is not Computer Setup has Run Computer Setup.
recognized as part of not been run to
the computer system. configure the new
device.
---------------------------------------------------
Cable(s) of new Ensure that all cables are
external device are properly and securely
loose or power cables connected.
are unplugged.
---------------------------------------------------
Power switch of new Turn off the computer, turn
external device was on the external device,
not turned on when then turn on the computer
the computer was to integrate the device
powered up. with the computer system.
---------------------------------------------------
Device is not seated Turn off the computer and
properly. reinsert the device.
===========================================================================
Table 5-21. Solving Keyboard/Numeric Keypad Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Embedded numeric Num Lock function is Press the Fn+End/Num Lock
keypad on computer not turned on. keys to enable the Num Lock
keyboard is disabled. function and embedded
numeric keypad.
---------------------------------------------------------------------------
Keyboard is locked. QuickLock is Enter password to exit
initiated. QuickLock.
===========================================================================
Table 5-22. Solving Trackball/Mouse Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Trackball or mouse Incorrect or no Install the device driver
does not work. device driver is and add to the AUTOEXEC.BAT
installed. file or CONFIG.SYS file.
---------------------------------------------------
The device driver is Install the Compaq mouse
not installed in driver in Windows.
Windows.
---------------------------------------------------------------------------
Integrated trackball An external pointing Disconnect the external
does not work. device is connected pointing device and restart
to the computer and the computer.
the system has
disabled the
integrated trackball. 
						

							---------------------------------------------------------------------------
Trackball or mouse Mouse device driver Enter MOUSE at the system
does not work even is not activated prompt to activate the
though the device (loaded into memory) mouse device driver.
driver is in the in MS-DOS.
PATH command of the Add a line in the
AUTOEXEC.BAT file. AUTOEXEC.BAT file to
automatically activate
the mouse device
driver each time the
computer is turned
on or restarted.
---------------------------------------------------
Defective trackball Replace the trackball
assembly. assembly.
---------------------------------------------------
Defective system Replace the system board.
board.
---------------------------------------------------
Mouse device driver From Windows, run Windows
is not correctly Setup and select the proper
installed in Windows. mouse driver.
---------------------------------------------------------------------------
Cursor skips or moves The ball, rollers, or Clean the ball in the
abnormally when using tracking post in the trackball or mouse.
a trackball or mouse. trackball or mouse
need cleaning.
---------------------------------------------------
Defective trackball Replace trackball assembly.
assembly.
===========================================================================
Table 5-23. Solving Memory Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Memory count during Optional memory 1. Ensure that the
Power-On Self-Test board is installed appropriate memory board
(POST) is incorrect. incorrectly, is has been installed
incompatible with the correctly.
computer, or is con- 2. Run Computer Setup
figured incorrectly.
---------------------------------------------------------------------------
Out of Memory Too many TSRs are Delete any TSR applications
message is displayed installed. that you do not need.
on the screen or ---------------------------------------------------
insufficient memory Memory configuration Reconfigure the memory
error occurs during is not set up using MS-DOS MEMMAKER.
operation. correctly.
---------------------------------------------------
System ran out of 1. Check the application
memory for the documentation for memory
application. requirements.
2.Increase memory.
===========================================================================
Table 5-24. Solving PC Card Problems
===========================================================================
Problem Probable Cause Solution(s)
=========================================================================== 
						

							When turned on, the Card is not inserted Remove and reinsert the
computer does not properly. card in the correct
beep when a PC Card orientation.
is inserted. ---------------------------------------------------
PC Card beeps are From MS-DOS: Run the PCCARD
disabled. utility to re-enable PC
Card beeps. From Windows:
Select Computer Setup from
the Compaq Control Center
and select the PC Card
option to re-enable PC Card
beeps.
---------------------------------------------------
Warning beeps are Press Fn+F5 keys to turn on
turned off. warning beeps.
---------------------------------------------------
PC Card drivers are Select Computer Setup from
not loaded. the Compaq Control Center
and select the PC Card
option to enable the PC
Card drivers.
---------------------------------------------------
The PC Card slot is From MS-DOS: Select
disabled. Security Management from
the Configuration and
Diagnostics menu to enable
the PC Card slot.
Card or card driver From Windows: Select
is not PC Card Security Management from
compliant. the Compaq Control Center
to enable the PC Card slot.
Contact Compaq Reseller
Support for a list of PC
Cards tested successfully
in Compaq PC Card
platforms.
---------------------------------------------------------------------------
The PC Card drivers The PC Card slot is From MS-DOS: Select
(Socket Services, disabled. Security Management from
Card Services, Card the Configuration and
ID) fail with error Diagnostics menu to
messages when the enable the PC Card slot.
computer is turned
on. From Windows: Select
Security Management from
the Compaq Control
Center to enable the PC
Card slot.
---------------------------------------------------------------------------
Problem Probable Cause Solution(s)
---------------------------------------------------------------------------
PC Card modem or Wrong COM port From MS-DOS: Run CARDINFO
fax card does not being used to access to determine which COM port
work. the card. is assigned to the card.
From Windows: Select
Computer Setup from the
Compaq Control Center to 
						

							determine which COM port
is assigned to the card.
---------------------------------------------------
The card conflicts From MS-DOS: Run PCCARD to
with the system board select a different COM
serial device. port for the PC Card.
From Windows: Select
Computer Setup from the
Compaq Control Center, then
select the PC Card option
and choose a different COM
port for the PC Card.
---------------------------------------------------
The card is not PC Contact Compaq Reseller
Card compliant. Support for a list of PC
Cards tested successfully
in Compaq PC Card
platforms.
---------------------------------------------------------------------------
Modem or network PC Network driver is not Select Computer Setup
Card does not work. set up properly. from the Compaq Control
Center and select the
PC Card option; then
view the Online help
for detailed
instructions on setting
up network PC Cards.
---------------------------------------------------------------------------
Storage PC Card does SRAM and flash Select Computer Setup from
not work. memory cards require the Compaq Control Center;
the memory card then select the PC Card
driver to be loaded. option to enable the
memory card driver.
---------------------------------------------------
Flash memory cards Select Computer Setup from
require the Microsoft the Compaq Control Center;
FlashFile System to then select the PC Card
be loaded. option to enable the flash
file system.
---------------------------------------------------
Hard disks on flash Select Computer Setup from
mass storage cards the Compaq Control Center;
require the PC Card then select the PC Card
ATA driver to be option to enable the PC
loaded. Card ATA driver.
---------------------------------------------------------------------------
Problem Probable Cause Solution(s)
---------------------------------------------------------------------------
You are trying to From MS-DOS: Run CARDINFO
access the card using to determine which drive
the wrong drive letter is assigned to the
letter. card.
From Windows: Select
Computer Setup from the
Compaq Control Center
to see which drive
letter is assigned to
the card. 
						

							--------------------------------------------------
The card is not From MS-DOS: For memory
formatted. cards, run MEMCARD to
format the card. For
hard drive cards and
flash mass storage
cards, run ATACARD,
then run FORMAT.
From Windows: Select
Computer Setup from the
Compaq Control Center,
then select MEMCARD or
ATACARD from the PC Card
option.
-------------------------------------------------
The card is not Contact Compaq Reseller
supported. Support for a list of PC
Cards tested successfully
in Compaq PC Card
platforms.
===========================================================================
Table 5-25. Solving Printer Problems *
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Printer does not The device drivers Install the correct printer
print. for the application drivers for the application
are not installed. to the CONFIG.SYS file.
---------------------------------------------------
Printer that is set Connect the printer to the
up for a network is network.
not connected to the
network.
---------------------------------------------------
Printer cable is too Replace the cable.
long, unshielded, or
defective.
---------------------------------------------------------------------------
Printer is off-line. Paper tray is empty. Fill the paper tray and
select Online.
---------------------------------------------------------------------------
Printer prints Correct printer Install the correct printer
garbled information. drivers are not driver.
installed.
---------------------------------------------------
Cable is not Connect printer cable
connected properly to properly to the computer.
computer.
---------------------------------------------------
Printer cable is too Replace the cable.
long, unshielded, or
defective.
---------------------------------------------------------------------------
* If you experience problems printing, run a printer self-test to
determine if it is a printer-specific problem. Refer to the
documentation provided with the printer and the application software.
=========================================================================== 
						

							Table 5-26. Solving Software Application Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Cannot use an The application has 1. Add or edit the
application. not been added to the application entry in the
PATH statement. AUTOEXEC.BAT file.
2. Run the program with the
full path name.
---------------------------------------------------------------------------
Application fails or A conflict exists Close all applications
does not work between applications. being used.
properly.
---------------------------------------------------------------------------
Insufficient memory Too many TSRs are Delete any TSR applications
to run application. installed. that are not needed.
---------------------------------------------------
Application requires Exit Windows and enter
Windows to be run in again using the following
enhanced mode. command to run in enhanced
mode: WIN/3
---------------------------------------------------
Memory configuration Re configure the memory
is not set up using MS-DOS MEMMAKER.
correctly.
1. Check the application
System ran out of documentation for
memory for the memory requirements.
application. 2. Install additional
memory.
===========================================================================
Table 5-27. Solving Sound Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Computer does not Beeps have been Press the Fn+F5 keys to
beep after the turned off. turn the speaker on.
Power-On Self-Test
(POST).
===========================================================================
Chapter 5.4 Contacting Compaq Support 
Obtain the following information before contacting Compaq Support:
o Product name
o Product serial number (Section 1.2)
o Purchase date
o Conditions under which the problem occurred
o Any error messages that have occurred
o Hardware configuration 
						

							o Type of printer connected
o Hardware/software being used
o Printed results of Computer Checkup (TEST) and View System Information
(INSPECT), if possible
o Printed copies of CONFIG.SYS and AUTOEXEC.BAT files, if possible
Chapter 5.5 Shipping Preparation 
To ship the computer, complete the following steps:
1. Back up the critical hard drive files. Ensure that backup
tapes/diskettes are not exposed to electrical or magnetic fields while
stored or in transit.
2. Turn off the computer and external devices.
3. Disconnect the external devices from their power sources, then from the
computer.
IMPORTANT: Ensure that there is no diskette in the diskette drive and
that there are no PC Cards in the PC Card slot.
4. Close the display and all exterior doors (external options, PC Card
compartment, memory, and hard drive).
5. Pack the computer system with sufficient packing material to protect
it. Use the original packing box or similar packaging.