Solving Power Problems - Compaq 1200US - Presario - Celeron 800 MHz Maintenance And Service Manual

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Illustrated Parts Catalog
Troubleshooting
Solving PC Card Problems
Some common causes and solutions for PC Card problems are listed in the following table.
Problem
When turned on, the computer
does not beep when a PC Card
is inserted.
PC Card modem, fax, or
network card does not work.
PC Card modem or fax card
does not work.
Modem network PC Card does
not work.
Memory or storage card does
not work.

Solving Power Problems

Problem
Computer won't turn on and
battery pack is not inserted.
Computer turned off while it was
left unattended and the power icon
is off.
Solving Printer Problems
If you experience problems printing, run a printer self-test. Refer to the documentation provided with your printer for
instructions. If the self-test fails, it is a printer-specific problem. Also refer to the printing section of your application
documentation.
Problem
Printer will not turn on.
Printer will not print.
Printer prints garbled information.
Solving Touch Pad/Pointing Device Problems
Some common causes and solutions for Touch Pad/pointing device problems are listed in the following table.
Problem
Touch Pad or mouse does not work.
External mouse does not work.
Touch Pad or mouse does not work even
though the device is enabled in Windows.
Cursor skips or moves abnormally when
using the Touch Pad.
Maintenance & Service Guide
Models: 1246, 1247, 1277, 1278, and 1279
| Notice | Preface
| Removal & Replacement Procedures
Pin Assignments
Solving PC Card Problems
Card is not inserted properly.
PC Card beeps are disabled.
Speaker is turned off or
volume is turned down.
PC Card drivers are not
installed.
Card or card driver is not
supported.
Card is not fully inserted into
the slot or is not inserted
properly.
Telephone cord is not
plugged in all the way.
Necessary drivers are not
installed (turned on).
You are trying to access the
card using the wrong COM
port.
The card conflicts with a
serial device.
The card is not supported.
Network driver is not
installed or is not set up
properly.
Telephone cord is not
properly connected.
SRAM and flash
memory cards require
the memory card driver
to be loaded (turned on).
Flash memory cards require
the Microsoft FlashFile
System to be loaded.
Hard drives on flash
mass storage cards require
the PC Card ATA driver to
be loaded.
You are trying to access the
hard drive card using the
wrong drive letter.
The card is not supported.
Solving Power Problems
Computer is not connected to
a power source.
Power cords to the external
power source are unplugged.
Power adapter is defective.
System board is defective.
System initiated Hibernation
due to a critical low-battery
condition.
System initiated Hibernation
after a preset timeout.
Solving Printer Problems
The signal cable may not be
connected properly, or the
printer is unplugged.
Printer is not turned on or is
off line.
The device drivers for your
application are not installed.
Printer that is set up for a
network is not connected to
the network.
Printer cable is too long,
unshielded, or defective.
Paper tray is empty.
Correct printer drivers
are not installed.
Cable is not
connected properly.
Cable is defective.
Solving Touch Pad/Pointing Device Problems
Presario Series
| Product Description
| Battery Pack Operations
Probable Cause
Probable Cause
Probable Cause
Cause
device drive, or no device
Incorrect
driver is installed.
The device driver is not installed in
Windows.
Mouse is not securely connected or
is connected to an incorrect external
connector.
Mouse is not enabled.
Cable not properly seated in
Touch Pad board.
Defective Touch Pad board.
Defective system board.
Device driver is not correctly
installed in Windows.
The Touch Pad needs to be cleaned. Clean the Touch Pad with a cloth
| Troubleshooting
| Specifications
Solution(s)
Ensure the card is inserted
in the correct orientation.
Double-click the PC Card icon in
the Control Panel, and click the
Global Settings tab; the
enable PC Card sound effects.
Press volume buttons to turn
; then, increase the
the speaker on
volume.
Double click the Add New
Hardware icon in the
Control Panel for installation
instructions.
If PC Card or drivers are not
compatible with Windows,
install drivers and use the
PC Card in MS-DOS mode.
Contact your Compaq
service provider for a list of PC
Cards tested successfully in
Compaq PC Card platforms.
that the card is inserted in
Ensure
the correct orientation.
Check and secure telephone
connection.
Install drivers.
See Specifications
COM port.
See Specifications
address.
Use supported cards only.
Install driver.
Verify telephone connection.
Install driver.
Double-click My Computer
to verify the drive letter
assigned to the card.
Contact your Compaq
authorized service provider
for a list of PC Cards tested
successfully in Compaq PC
Card platforms.
Solution(s)
Insert battery or connect
an external power source.
Ensure that power cords
connecting the computer
and the external power
source are plugged in
properly.
Replace AC Adapter and
restart.
Replace the system board.
Replace the battery pack
with a fully charged
battery pack or connect
the computer to an
external power source.
Then turn on the
computer.
Turn on the computer.
Solution(s)
Ensure that the signal cable is
properly connected and that the
power cord is connected to the
electrical outlet.
Turn the printer on and set
it to on line.
Refer to the printer
documentation to install
the correct printer driver.
Connect the printer to the
network.
Replace the cable.
Fill the paper tray with
paper and set the printer
to online.
Refer to the printer
documentation to install
the correct printer driver.
Ensure that the printer
signal cable is properly
connected to the
computer.
Replace the printer cable
and retest.
Solution(s)
Install the device driver and add
to the AUTOEXEC.BAT file or
CONFIG.SYS file.
Install the Touch Pad/mouse
driver in Windows.
Ensure that the mouse is
securely connected to the
appropriate external connector.
Enter MOUSE at the system
prompt to activate the mouse
device driver.
Add a line in the AUTOEXEC.BAT
file to automatically activate the
mouse device driver each time
computer is turned on or
restarted.
Reseat cable.
Replace Touch Pad board.
Replace system board.
Install the appropriate device
driver in Windows.
dampened with alcohol or an
ammonia-based glass cleaner.
Wipe up liquid with a dry cloth.
n,
-authorized
to verify
to verify