Deskjet Review

I have a HP Deskjet F 4235 all in one printer, scanner, copier and would like to know how to change out the ink trays, color and black one. I have lost my book on this and have never loaded it. I have a door on the front, and when I open it the tray goes to one end and when I close it and open it again it goes to the other end. Do I have to just reach in there and change them out. They do not come out to the front of printer. Help please.

When you loaded the printer you would have had a cd that installed the drivers etc. – It usually installs help files that show these things –
Look at the programs and see if that is listed – If not, then in control panel and click on your printer and follow the trail to the instructions –