Maintenance & Service Guide
Presario 1900 Series
Models: 1900T, 1905, 1906, 1910, 1915, 1919, 1920, 1922, 1925, 1926, 1927, 1928, 1929, and 1930
Before You Begin |
| Specifications |
| Parts Catalog |
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Removal Sequence |
| Troubleshooting |
| Battery Operations |
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Product Description |
| Pin Assignments |
| Index |
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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.
Solving PC Card Problems
Probable Cause 
Solution(s)
Card is not inserted properly. Ensure the card is inserted in the correct orientation.
PC Card beeps are disabled.
| |
| icon in the Control Panel, |
| click the Global Settings |
| tab, the enable PC Card |
| sound effects. |
Speaker is turned off or | Press volume buttons to |
volume is turned down. | turn the speaker on, then |
| increase the volume. |
PC Card drivers are not | Double click the Add New |
installed. | 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 |
Card or card driver is not | Contact your Compaq |
supported. | authorized service provider |
| for a list of PC Cards tested |
| successfully in Compaq PC |
| Card platforms. |
PC Card modem, fax, or network card does not work.
Card is not fully inserted into the slot or is not inserted properly.
Ensure the card is inserted in the correct orientation.
| Telephone cord is not | Check and secure telephone |
| plugged in all the way. | connection. |
| Necessary drivers are not | Install drivers. |
| installed (turned on). |
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PC Card modem or fax card | You are trying to access the | See Specifications to verify |
does not work. | card using the wrong COM | COM port. |
| port. |
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The card conflicts with a serial device.
The card is not supported.
See Specifications to verify
address.
Use supported cards only.
Modem network PC Card | Network driver is not installed or is | Install driver. |
does not work. | not set up properly. |
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| Telephone cord is not properly | Verify telephone |
| connected. | connection. |
Memory or storage card | SRAM and flash memory cards | Install driver. |
does not work. | require the memory card driver to be |
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| loaded (turned on). |
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| Flash memory cards require the |
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| Microsoft FlashFile System to |
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| be loaded. |
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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.
Contact your Compaq authorized service provider for a list of PC Cards tested successfully in Compaq PC Card platforms.
Solving Power Problems
Also see "Solving Battery and Battery Gauge Problems" in this section.
| Solving Power Problems |
Problem | Probable Cause |
Computer won't turn on and | Computer is not connected to |
battery pack is not inserted. | a power source. |
| Power cords to the external |
| power source are unplugged. |
| Power adapter is defective. |
Computer turned off while it was | System board is defective. |
left unattended and the power icon | System initiated Hibernation |
is off. | due to a critical |
| |
| condition. |
System initiated Hibernation after a preset timeout.
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.
Solving Printer Problems
If you experience problems printing, run a printer
| Solving Printer Problems |
Problem | Probable Cause |
Printer will not turn on. | The signal cable may not be |
| connected properly, or the |
| printer is unplugged. |
Solution(s)
Ensure that the signal cable is properly connected and that the power cord is connected to the electrical outlet.
Printer will not print. | 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.
Printer prints garbled information. Correct printer drivers are not installed.
Cable is not connected properly.
Cable is defective.
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.
Solving Touch Pad/Pointing Device Problems
Some common causes and solutions for Touch Pad/pointing device problems are listed in the following table.
Solving Touch Pad/Pointing Device Problems
Problem
Cause
Touch Pad or mouse does not work. Incorrect or no device driver is installed.
Solution(s)
Install the device driver and add to the AUTOEXEC.BAT file or CONFIG.SYS file.
The device driver is not | Install the Touch |
installed in Windows. | Pad/mouse driver in |
| Windows. |
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.
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.
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.
Clean the Touch Pad with a cloth dampened with alcohol or an ammonia- based glass cleaner. Wipe up liquid with a dry cloth.