Coombs' test involves taking a blood sample which is checked for the presence of antibodies which may destroy red blood cells.
You can use the HP Print and Scan Doctor to test the status of the printer spooler, print queue, device manager, and device conflicts. 1  On the desktop, double-click the HP Print and Scan Doctor icon to open the tool. 2  Click Start on the Welcome screen. 3  Select your printer, and then click Next.  Click Fix Printing.
Page 49: Scan To A Memory Device To scan an original from HP printer software (OS X) Open HP Scan. HP Scan is located in the Applications/Hewlett-Packard folder at the top level of the hard disk. Choose the type of scan profile you want and follow the on-screen instructions.