Question about HP Pavilion zd7000 zx5000 zv5000 presario 3000,R3000 Series 120W Laptop AC Adapter-360699-001 CD-ROM Drive
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Toughbook is a type of laptop computer marketed by Panasonic Corp.
The durable exterior makes it ideal for use in the military, government, hospitals and EMS systems.
The backlit keyboard is an accessory that can be added for convenience.
Check the Toughbook to see if the power is on. Inspect the power cables to ensure they are intact.
View the available battery life on the screen of the Toughbook.
If the Toughbook is not receiving an adequate amount of power, the backlighting may not operate properly.
Remove anything that is obstructing the optical sensor.
The optical sensor is on the top right side of the keyboard.
The sensor reacts to light to determine if the backlighting should be turned on or off.
If there is anything obstructing the sensor, the backlighting will not work.
Wipe the sensor with a dry cloth to remove any dirt or dust that may be obstructing the sensor.
Check the cables in the connection port to ensure the cables are securely inserted in each port. The connector ports that allow the keyboard to communicate with the LCD screen are on the left side of the keyboard and screen.
The keyboard cannot operate properly without solid connections, which are made with a USB and a function cable.
Press the "FN" and "F12" buttons to brighten the back light.
The back light may be operating properly but you may be unable to see the light if it is too dim.
Pressing these buttons together will brighten the back light by at least four levels.
Place your hand on the bottom of the keyboard. If the keyboard feels hot to the touch, the keyboard probably has entered a protective sleep mode.
The Toughbook will go into protective sleep when internal temperatures reach a dangerous level.
When this happens, allow the computer to remain shut down for a while in order to cool down before it will begin functioning properly.
When the computer feels cool to the touch, it is safe to use.
This typically takes 15 to 20 minutes.
Hope this helps
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