Manual HP Scanjet enterprise 9000 (page 29 of 41) (English)

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Check the USB connection

Check the physical connection to the scanner.

• Use the cable that was included with the scanner. Another USB cable might not be

compatible with the scanner.

• Ensure that the USB cable is securely connected between the scanner and the

computer. The trident icon on the USB cable faces up when the cable is properly

connected to the scanner.

If the problem persists after verifying the above items, try the following:

1. Do one of the following tasks depending on how the scanner is connected to the

computer:

• If the USB cable is connected to a USB hub or a docking station for a laptop,

disconnect the USB cable from the USB hub or the docking station, and then

connect the USB cable to a USB port on the back of the computer.

• If the USB cable is directly connected to the computer, plug it into a different USB

port on the back of the computer.

• Remove all other USB devices from the computer except for the keyboard and

the mouse.

2. Press the Power switch to the off position, wait 30 seconds, and then press the

Power switch to the on position.

3. Restart the computer.

4. After the computer has restarted, try using the scanner.

• If the scanner works, reconnect any additional USB devices one at a time; try the

scanner after connecting each additional device. Disconnect any USB devices

that prevent the scanner from working.

• If the scanner does not work, uninstall and then reinstall the HP Scanjet drivers

and utilities.

Check that the scanner has power

The power cable is connected between the scanner and a power outlet.

• Ensure that the power cable is securely connected between the scanner and a live

electrical outlet.

• If the power cable is connected to a surge protector, ensure that the surge protector

is plugged into an outlet and turned on.

If the problem persists after verifying the above items, follow these steps:

1. Press the Power switch to the off position, and then disconnect the power cable from

the scanner.

2. Wait 30 seconds.

3. Reconnect the power cable to the scanner, then press the Power switch to the on

position.

Reset the scanner

If you receive an error message similar to Scanner initialization failed or Scanner not

found when trying to use the scanner, you should reset the scanner.

Scanner initialization or hardware problems 27

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HP Scanjet enterprise 9000 Manual

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