HP Customer Support - Knowledge Base







HP ScanJet Pro 2000 s2, 3000 s4, N4000 snw1 / HP ScanJet Enterprise Flow 5000 s5, 7000 s3, N7000 snw1 - Power issues

Review the following information about resolving power issues.

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.
  • Ensure that the scanner is receiving power.

The scanner will not turn on

If the scanner will not turn on after pressing the Power button, check the following:

The scanner has paused or shut down

If the scanner stops scanning, follow these steps. After each step, start a scan to see if the scanner is working. If the problem persists, proceed with the next step.
  1. A cable might be loose. Ensure that both the USB cable and power supply are properly connected.
    Use the cable that was included with the scanner. Another USB cable might not be compatible with the scanner.
  2. Ensure that the scanner is receiving power.
    1. Check that the Power LED on the control panel is on.
    2. If the Power LED is not on, ensure that power is available to the power outlet or surge protector that the power supply is plugged into.
    3. If power is available to the power outlet or surge protector but the Power LED is still not on, unplug the power cable from the power source, wait 30 seconds, and then plug it back in.
    4. If the issue is not fixed, the power supply might be defective. Go to the product support home page for assistance:
  3. Restart your computer.
  4. Windows: On the computer, open Control Panel and use the Programs and Features tool to uninstall the following applications:
    • HP ScanJet Basic Device Software
    • HP ScanJet ISIS Driver
    • HP ScanJet Plugin
    • HP Scan
  5. Reconnect the USB cable and power supply to the scanner, and then press the Power button to turn on the scanner. Reinstall the HP ScanJet software and drivers.

The scanner keeps turning off

If the scanner keeps turning off, try these steps according to your operating system.
By default, the scanner will enter Sleep Mode prior to 15 minutes of inactivity, and will turn off automatically after two hours of inactivity to conserve power.
Windows: To change the defaults, complete these steps:
  1. Launch the HP Scanner Tools Utility.
  2. Click the Settings tab, and then select the appropriate Sleep Mode and Auto-Off settings.
    • To specify the period of inactivity after which the scanner goes into Sleep Mode, select 15 minutes or 1 hour from the Put the scanner to sleep after drop-down list.
    • To specify the period of inactivity after which the scanner automatically turns off, select the appropriate value (1 hour, 2 hours, 4 hours, or 8 hours) from the Turn off the scanner after drop-down list.
  3. Click Apply.
macOS: Use HP Utility to change these defaults.






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