For VHS -> DVD dubbing, make sure that you put in a compatible writable DVD with enough space for the video. For dubbing a DVD to VHS, make sure that you have a VHS tape with the erase protection tab on the tape. Insert the blank media in the correct side and the media that you want to record in the other. Press Setup on the remote, then select the General Settings menu. Then select Recording and finally Dubbing. (Use the up/down arrows to navigate the menus and press Enter to select an option.) Select the type of dubbing that you want to do. Press Setup to exit. Then press the DVD or VCR button (with the item to record) and press play and pause when you reach the point that you want to start the recording. Then press the other device button and press the Dubbing button (on the remote or the unit). Press Stop when done recording the selection.
Note: copy-protected videos can't be dubbed.
Crutchfield and Toshiba both have the manual for the DVR-610 . Crutchfield has the manual here: http://a248.e.akamai.net/pix.crutchfield.com/Manuals/052/052DVR610.PDF
. See page 49 for a set of screen captures of the steps for duplicating a video.
I hope this helps.