HP Designjet Universal Print Driver Uživatelský manuál stáhnout pdf (Strana 185)

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Method to delete the HP PNP Scan Null driver

In Windows 7:

1. Open Windows Explorer.

2. Go to windows\inf directory.

For Windows 7, the following steps are required:

a. Open the Organize folder, and then click Folder and search options.

b. Click the Search tab.

c. Select the option to Always search file names and contents...

d. Click OK

Figure B-3 Field Options Search tab

3. Search for hppscnd (within the files). If present, the search result will show one or more oemxxx.inf files.

4. Go to a command prompt (run as administrator) and type pnputil –d oemxxx.inf. Remove all scan null drivers

found in the previous step.

NOTE: If the file is in use, it means that other printers are using the same file, which have to be deleted before the

hppscnd files can be removed. These printers will have to be reinstalled/recreated after the HP LaserJet 400 color

M451dw product has been installed correctly.

After following the above steps, all scan null drivers have been uninstalled/removed.

To reinstall the scan null driver:

For Windows 7, you can reinstall the HP UPD 5.5 including the scan null driver with the command pnputil –a *.inf.

Then disconnect and reconnect the USB cable to restart the Plug and Play installation process.

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HP Designjet Universal Print Driver Uživatelský manuál Strana 185