Toshiba Nb305 Manual

User’s Manual8-9
Optional Devices
Security lock
A security locks enable you to anchor your computer to a desk or other 
heavy object in order to help prevent unauthorized removal or theft. The 
computer has a security lock slot on its right side into which you can attach 
one end of the security cable, while the other end attaches to a desk or 
similar object. The methods used for attaching security cables differ from 
product to product. Please refer to the instructions for the product you are 
using...

User’s Manual9-1
Troubleshooting
Chapter 9
Troubleshooting
TOSHIBA designed the computer for durability. However, should problems 
occur, following the procedures in this chapter can help to determine the 
cause.
All readers should become familiar with this chapter. Knowing what might 
go wrong can help prevent problems from occurring.
Problem solving process
Resolving problems will be much easier if you observe the following 
guidelines:
■Stop immediately when you recognize a problem exists. Further...

User’s Manual9-2
Troubleshooting
■Inspect all connecting cables for loose wires and all connectors for 
loose pins.
■Check that your diskette is correctly inserted and that the diskette’s 
write protect tab is correctly set.
Make notes of your observations and keep them in a permanent error log. 
This will help you describe your problems to your dealer. If a problem 
recurs, the log will help you identify the problem faster.
Analyzing the problem
Sometimes the system gives clues that can help you...

User’s Manual9-3
Troubleshooting
Hardware and system checklist
This section discusses problems caused by your computers hardware or 
attached peripherals. Basic problems may occur in the following areas:
System start-up 
When the computer does not start properly, check the following items:
■Self Test
■Power Sources
■Power-on Password 
Self test 
When the computer starts up, the self-test will be run automatically, and the 
following will be displayed:
This message remains on the screen for a few...

User’s Manual9-4
Troubleshooting
Power 
When the computer is not plugged into an AC adaptor, the battery pack is 
the primary power source. However, your computer has a number of other 
power resources, including intelligent power supply and Real Time Clock 
battery. These resources are interrelated and any one could affect apparent 
power problems. This section provides check lists for AC adaptor and the 
main battery. If you cannot resolve a problem after following them, the 
cause could lie with...

User’s Manual9-5
Troubleshooting
Password
Keyboard
Keyboard problems can be caused by your setup configuration. For more 
information refer to Chapter 5, The Keyboard Chapter 7, HW Setup and 
Passwords.Check whether the battery is hot or cold to the 
touch. If the battery is too hot or too cold, it will 
not charge properly. Make it reach room 
temperature.
Unplug the AC adaptor and remove the battery to 
make sure the terminals are clean. If necessary 
wipe them with a soft dry cloth dipped in alcohol....

User’s Manual9-6
Troubleshooting
LCD panel
Apparent LCD problems may be related to the computer’s setup. Refer to 
Chapter 7, HW Setup and Passwords, for more information.
Hard disk drive
Output to screen is 
garbledMake sure the software you are using is not 
remapping the keyboard. Remapping involves 
reassigning the meaning of each key. See your 
software’s documentation.
If you are still unable to use the keyboard, 
consult your dealer
ProblemProcedure
ProblemProcedure
No displayPress hot keys FN+F5...

User’s Manual9-7
Troubleshooting
Pointing device
If you are using a USB mouse, also refer to the USB section in this chapter 
and to your mouse documentation.
Touch Pad
USB mouse
ProblemProcedure
On-screen pointer 
does not respond to 
Pad operationThe system might be busy. If the pointer is 
shaped as an hourglass, wait for it to resume its 
normal shape and try again to move it.
Double-tapping does 
not workTry changing the double-click speed setting in 
the mouse control utility.
1. Open the Control...

User’s Manual9-8
Troubleshooting
SD/MuliMedia Card
Refer also to Chapter 8, Optional Devices.
External Monitor
Refer also to Chapter 8, Optional Devices, and to your monitor’s 
documentation.1. Open the Control Panel and Printers and 
Other Hardware, select the Mouse icon and 
press Enter.
2. Click the Buttons tab.
3. Set the double-click speed as instructed and 
click OK.
The mouse pointer 
moves too fast or too 
slowTry changing the speed setting in the mouse 
control utility.
1. Open the Control Panel...

User’s Manual9-9
Troubleshooting
Sound system
USB
Refer also to your USB device’s documentation. No displayTry adjusting the contrast and brightness 
controls on the external monitor.
Press hot keys FN+F5 to change the display 
priority and make sure it is not set for the internal 
display.
Display error occursCheck that the cable connecting the external 
monitor to the computer is attached firmly.
If problems persist, contact your dealer.
ProblemProcedure
ProblemProcedure
No sound is heardCheck the...