Scanner doesn't work not attached to computer how do I do that

Question

Have printer scanner HP Officejet 6500. Printer works copy works scanner will not says it is nor hooked up to computer. I have a Mac Pro. How can I do this?

Answer 1

Hi @rlinda 
I'd like to help you with your Officejet 6500.
Reset Printing System
Click the Apple icon (   ), and then click System Preferences.
In the Hardware section, click Print & Fax/Scan. The Print & Fax/Scan  dialog box opens.
Right-click (or  Ctrl  +click) in the left panel, and then click Reset printing system…
Click OK to confirm the reset.
Type the correct Name and Password.
Click OK to reset the printing system. The Print & Fax dialog box shows no printer selected
Note: This will remove all printers in the print and Fax/Scan, any printer removed can be re-added later by clicking the plus (+) symbol.
Repair Disk Permissions
On the Dock, click Applications, and then click Utilities.
Double-click Disk Utility.
Highlight your hard drive/partition on the left (by default this is "Macintosh HD").
Click the Repair Disk Permissions button at the bottom of the window.
Once the repair is complete, restart the computer and download and install the HP Printer Drivers for OS X.
Now when you add the printer, you should have the HP driver to choose, do not select the AirPrint driver.
Select Add other Printer or Scanner  
Select the printer you are adding and next to 'Use' you can the printer driver 
Please let me know how this works out. If you require further assistance, please post back with your Mac operating system version. How Do I Find Which Mac OS X Version Is on My Computer?
There may not be full feature software ad drivers available depending your Mac version, instead you may have to use the Apple driver. With this driver you can still print and scan, you just wont have HP software to scan from. Scanning to the computer from the printer control panel is only available when using HP Scan software, thus it will not work because there is no HP scan software as apart of the Apple Software Update driver.
Instead, you can scan using,
Method one: Scan from the Print & Scan window   
Method two: Scan from Apple Preview
Method three: Scan from Apple Image Capture 
I hope this helps. If you have any additional questions are have any difficulty using any of these methods, please let me know what method you are trying and what the issue/error is.
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Sunshyn2005 - I work on behalf of HP