PN-R703 (serv.man5) - Sharp Monitor Service Manual (repair manual). Page 106

PN-R903/R703/R603　FIRMWARE UPDATE PROCEDURES

 5 – 7

■ SETUP PROCEDURE(Windows7)

7 ) "device manager" is inputted into "search of program and file" box. 

8 ) "Device manager" is chosen from the displayed list, device man-

ager is started, and "a port (COM and LPT)" is displayed.  

9 ) By the COM port currently used, it right-clicks and a "property" is

chosen, on the property screen of communication port, a "Port Set-
tings" tab is chosen and a "Advanced" button is pushed 

10 )COM number is chosen by  "COM port number." 

(COM6 is chosen in the example of a screen)

　Choose the COM number which is not displayed in "Port (COM and 
   LPT)" of the device manager. Although COM to choose may have   
   become "in use", selection is possible when not displayed in "a port 
   (COM and LPT)."

　Choose "yes", when the following dialog is displayed  

Setup of a communication port is completed above