compaq contura 400 family User Manual

							1716 - xx Hard drive conditional
format test failed
1717 - xx Hard drive ECC * test
failed
1719 - x Hard drive power mode
test failed
1799 - xx Invalid hard drive
type failed
---------------------------------------------------------------------------
* Error Correction Code
===========================================================================
Table 5-10. Graphics Computer Checkup Error Codes
===========================================================================
Error Code Description Recommended Action
===========================================================================
2402 - xx Video memory test The following step applies to
failed 2402 - xx through 2480 - xx
error codes:
2403 - xx Video attribute test Replace the system board.
failed
2404 - xx Video character set
test failed
2405 - xx Video 80 x 25 mode
9 x 14 character cell
test failed
2406 - xx Video 80 x 25 mode
8 x 8 character cell
test failed
2408 - xx Video 320 x 200 mode
color set 0 test
failed
2409 - xx Video 320 x 200 mode
color set 1 test
failed
2410 - xx Video 640 x 200 mode
test failed
2412 - xx Video gray scale
test failed
2414 - xx Video white screen
test failed
2416 - xx Video noise pattern
test failed
2418 - xx ECG/VGC memory test
failed 
						

							2419 - xx ECG/VGC ROM checksum
test failed
2421 - xx ECG/VGC 640 x 200
graphics mode test
failed
---------------------------------------------------------------------------
Error Code Description Recommended Action
---------------------------------------------------------------------------
2422 - xx ECG/VGC 640 x 350 16 The following step applies to
color set test failed 2402 - xx through 2480 - xx
error codes:
2423 - xx ECG/VGC 640 x 350 64 Replace the system board.
color set test failed
2424 - xx ECG/VGC monochrome text
mode test failed
2425 - xx ECG/VGC monochrome
graphics mode test
failed
2431 - xx 640 x 480 graphics test
failure
2432 - xx 320 x 200 graphics
(256 color mode) test
failure
2448 - xx Advanced Graphics
Controller test failed
2451 - xx 132 - column Advanced
Graphics test failed
2456 - xx Advanced Graphics 256
Color test failed
2458 - xx Advanced Graphics
BitBLT test
2468 - xx Advanced Graphics DAC
test
2477 - xx Advanced Graphics data
path test
2478 - xx Advanced Graphics
BitBLT test
2480 - xx Advanced Graphics Line
draw test
===========================================================================
Table 5-11. Pointing Device Interface Computer Checkup Error Codes
===========================================================================
Error Code Description Recommended Action
===========================================================================
8601 - xx Pointing Device 1. Run SETUP, check trackball
Interface test failed. settings. 
						

							2. Clean trackball.
3. Ensure trackball connector
is seated properly.
4. Replace the trackball
assembly.
5. Replace the system board.
===========================================================================
Chapter 5.3 Troubleshooting without Error Messages 
This section contains troubleshooting information that provides a quick
reference for diagnosing problems that cannot be identified by running
POST or Computer Checkup (such as a non-functional display that does not
allow viewing error messages). For additional information refer to the
tables 5-12 through 5-27 in Section 5.3.
Since symptoms can appear to be similar, carefully match the symptoms of
the computer malfunction against the problem description in the
troubleshooting tables to avoid a misdiagnosis.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING >>>>>
						

							---------------------------------------------------------------------------
Computer is beeping and Computer has Immediately save any open
battery indicator is entered a low file(s). Then do any one
flashing. battery condition. of the following:
o Connect the computer to
an external power source,
then charge the battery
pack.
o Replace the battery pack
with a fully charged
battery pack.
o Initiate Hibernation
(press the Fn key and
power button
simultaneously) to
completely halt the power
consumption on the
battery pack, or initiate
Standby by pressing the
power button once to
reduce power consumption
until the battery pack
can be recharged or
another power source can
be connected.
---------------------------------------------------------------------------
Problem Probable Cause Solution(s)
---------------------------------------------------------------------------
Computer turned off System initiated Install a fully charged
while left unattended. Hibernation due battery pack or connect the
Power indicator is to a low battery computer to an external
off. condition. power source, then turn on
the computer.
------------------------------------------------
System initiated Turn on the computer.
Hibernation
according to Power
Management
settings.
---------------------------------------------------------------------------
The computer has no Power switch not 1. Determine if the power
power at all when the functioning. switch is functioning by
power switch is removing the battery
activated. All and connecting the AC
indicators are off. If power cord to the unit.
the other indicators 2. Replace the keyboard
come on for any period assembly.
of time (even for a ------------------------------------------------
momentary flash), this Defective keyboard Install a new keyboard
is not a no power assembly. assembly.
problem.
---------------------------------------------------------------------------
Unit powers up from AC Battery not Charge the battery fully.
power, but not from the charged.
battery.
------------------------------------------------
Defective battery. Install another battery. 
						

							------------------------------------------------
Battery contacts Remove the keyboard
not making good assembly and examine the
contact with battery contacts. Ensure
battery. that the battery is making
good contact with all 4
contacts.
Replace the system board.
------------------------------------------------
Defective system Replace the system board.
board.
---------------------------------------------------------------------------
Problem Probable Cause Solution(s)
---------------------------------------------------------------------------
The computer has a Short circuit on 1. Remove the following
crowbar condition: it one of the power parts one at a time
powers up for a short supply outputs. until the short circuit
period, then shuts off. is located:
indicators flash on,
then off (this takes NOTE: After verifying
place in less than 3 that a part is not the
seconds). cause of the short
circuit, reinstall it
before removing the next
part. In addition, note
that the first three
parts can be checked by
the user.
a. PC card
b. Battery pack
c. Hard drive
d. Diskette drive
e. Internal AC power
supply
2. Disconnect the display
cable from the system
board and power the
unit up. If the unit
powers up, the display
cable or display
assembly has failed.
Plug the display cable
back into the system
board and attempt to
find the defective
part in the display
assembly by completing
the following steps
one at a time until
the short circuit is
located:
a. Disconnect the
display cable from
the inverter board 
						

							and attempt to
power the unit up.
If the unit powers
up, replace the
inverter board.
b. Disconnect the
display cable from
the display panel
and power the unit
up. If the unit
powers up, replace
the display panel.
c. Replace the display
cable.
3. Replace the system
board.
===========================================================================
Table 5-13. Solving System Start Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
System powers up (LEDs Bad contacts Replace system board.
on) but it does not between processor
begin POST. board and system
board.
------------------------------------------------
Defective Replace system board.
processor board.
------------------------------------------------
Defective system Replace system board.
board.
===========================================================================
Table 5-14. Solving Standby Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
The power/standby button Defective keyboard Replace the keyboard
is pressed, but the unit assembly. assembly.
does not go into ------------------------------------------------
standby. Defective system Replace the system board.
board.
===========================================================================
Table 5-15. Solving Battery Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Battery indicator Low battery beeps Use Power Management to
flashes to indicate low were turned off. turn on the low battery
battery condition, but warning beeps.
computer does not beep. ------------------------------------------------
Volume is turned Press the Fn + F5 keys.
on/off.
---------------------------------------------------------------------------
Battery indicator Battery pack is No action is necessary.
doesnt light and already charged.
battery pack wont fast ------------------------------------------------
charge. Battery pack was Allow time for the battery 
						

							exposed to pack to return to room
temperature temperature.
extremes.
------------------------------------------------
Battery pack is at Replace battery pack.
end of its life.
---------------------------------------------------------------------------
Battery charge does not Battery is being Keep computer at a cooler
last as long as exposed to high temperature and recharge
expected. temperatures. * the battery.
------------------------------------------------
Battery is being Put computer in a warmer
exposed to cold place and recharge the
temperatures. * battery.
------------------------------------------------
Battery has Recharge the battery.
partially
self-discharged.
------------------------------------------------
Power conservation Set a power conservation
is disabled or set level.
to None.
------------------------------------------------
An external device Turn off or remove the
or PCMCIA card is external device when not
draining the using it.
battery.
------------------------------------------------
Defective battery. Condition the battery.
Install another battery. If
this fixes the problem,
original battery is
defective.
Replace the battery.
---------------------------------------------------------------------------
Battery pack is warm to Normal warming has No action is required.
the touch after occurred due to
charging. charging.
---------------------------------------------------------------------------
Battery indicator does Battery pack is Allow battery pack to
not come on and the trickle charging. continue charging for 30
battery gauge does not minutes and recheck the
reflect a change in battery gauge.
battery charge level.
------------------------------------------------
Battery contacts Remove the keyboard
not making good assembly and examine the
contact with battery contacts. Ensure
battery. that the battery is
making good contact with
all 4 contacts. If not,
gently bend the contacts on
the system board out to
make good contact.
------------------------------------------------
Defective system Replace the system board.
board.
--------------------------------------------------------------------------- 
						

							* The recommended storage temperature range for the battery pack is -4oF to
86oF (-20oC to 30oC ). The recommended operating temperature range is
50oF to 104oF (10oC to 40oC).
===========================================================================
Table 5-16. Solving Battery Gauge Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Battery gauge appears Battery pack has been Charge the battery pack *
inaccurate. partially recharged (Appendix B).
too many times or NOTE: The battery gauge is
computer has been in not linear. It will not
Standby for an necessarily stay on each
extended period of indicator the same amount
time. of time. The battery gauge
is based on voltage output
from the battery.
---------------------------------------------------------------------------
* The battery pack needs to be conditioned every 60 days to maintain
battery gauge accuracy.
===========================================================================
Table 5-17. Solving Display Problems
===========================================================================
Problem Probable Cause Solution(s)
===========================================================================
Characters are dim. From MS-DOS: Power From MS-DOS: Change Power
Management settings Management settings to
is set on high or medium.
custom.
From Windows: Adjust
From Windows: Power brightness setting in
Management brightness Power Management.
setting is incorrect.
---------------------------------------------------
Brightness or Press the Fn + F9 keys.
contrast (if Use arrows keys to adjust
applicable) is not the brightness. Press the
set properly. Fn + F8 keys. Use arrows
keys to adjust the
contrast.
NOTE: Contrast adjustment
is not applicable on
models with Color TFT
displays.
---------------------------------------------------
Computer screen is in Tilt display or move
direct light. computer.
---------------------------------------------------------------------------
Screen is blank. Quick Blank is Enter password to exit
initiated. QuickBlank.
---------------------------------------------------
Another screen Press any key and/or enter
blanking utility may password.
be installed.
---------------------------------------------------
Screen save was Press any key or click the
initiated by Power mouse.
Management due to 
						

							lack of user
activity.
---------------------------------------------------
Brightness and Press the Fn + F9 keys to
contrast needs adjust the brightness. Use
adjusting. the left and right arrow
keys to adjust brightness.
Press the Fn + F8 keys to
adjust the contrast.
---------------------------------------------------
Display has If computer is in direct
overheated. sunlight, move it and allow
it to cool off.
---------------------------------------------------------------------------
Display is blank and System is in Standby. Press the Power/standby
the Power/standby button to exit Standby.
indicator is
flashing.
---------------------------------------------------------------------------
Problem Probable Cause Solution(s)
---------------------------------------------------------------------------
Screen is blank, the System has entered a If available, immediately
Power/standby low battery Standby connect the computer to an
indicator is condition. The external power source or
flashing, and the computer will next insert a charged battery
battery indicator is activate Hibernation, pack. Then press the
flashing. if this feature is standby button to exit
not disabled. Standby.
If another power source is
not immediately available
and Hibernation is
disabled, attempt to exit
Standby and save any open
files. However, the
computer may not have
enough power to do this.
If you have not disabled
Hibernation, the computer
automatically hibernates.
Do not interfere with the
computer while it is
hibernating. Once the
computer has turned off,
insert a charged battery
pack or connect the
computer to another power
source, then turn the
computer back on.
---------------------------------------------------------------------------
Computer display is Display function was Press the Fn + F4 keys to
blank and the screen switched to the activate the computer
on an external external monitor. display. Press the keys
monitor displays again to display
information. information simultaneously.
**
--------------------------------------------------------------------------- 
						

							Distorted or garbled The ANSI.SYS driver Add the ANSI.SYS driver to
characters on the is not in the the CONFIG.SYS file. Add
display are mixed CONFIG.SYS file or the following line:
with text. the path is DEVICE=C:\ANSI.SYS
incorrect.
---------------------------------------------------------------------------
Computer display Using 800 x 600 or Restart the computer. If
flashes or has higher resolution on simultaneous display is
garbled characters external monitor and desired, use 640 x 480
when computer is have toggled back to resolution. **
connected to external internal display,
monitor. which only supports
640 x 480 resolution.
---------------------------------------------------------------------------
** 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.
---------------------------------------------------------------------------
Problem Probable Cause Solution(s)
---------------------------------------------------------------------------
Computer display and External monitor was Turn the computer off and
external monitor do connected after the connect the external
not display computer was turned monitor on, then turn on
information on. the computer.
simultaneously.
Press the Fn + F4 keys to
toggle through the three
display possibilities.
---------------------------------------------------------------------------
The light tubes on External monitor was If an external monitor is
the edge of the connected when the detected during POST, only
display panel do not computer was turned the external monitor will
light up at all and on. turn on. Press the Fn + F4
Power-On Self-Test keys to activate the
(POST) completes when Improper backlight or computer display.
the unit is powered display cable 1. Reseat the display cable
up. ** connections. to the system board.
2. Reseat the display cable
to the inverter board.
3. Reseat the backlight
cable to the inverter
board.
---------------------------------------------------
Defective inverter Replace the inverter board.
board.
---------------------------------------------------
Defective display Replace the display cable.
cable.
---------------------------------------------------
Defective display Replace the display panel.
panel.
---------------------------------------------------
Defective system Replace the system board.
board.
---------------------------------------------------------------------------
The light tubes on Defective system Replace the system board.
the edge of the board.
display panel do not