The only instruction manual I can find online for this model is for a SANYO DVW-7200 combo unit. This manual does not illustrate in any detail about remote control 'reset'; only the unit itself using remote to 'initialize' back to factory settings (except parental lock).
If the unit does not respond to the remote control;
Check if the power plug is connected to an AC outlet.
Check the batteries in the remote control.
Aim the remote control directly at the remote sensor. If necessary, remove all the obstacles
between the sensor and the remote control.
You have to be within 23 feet of this unit.
Check if the right mode is selected. If it's not in the right mode, press [DVD] or [VCR],
whichever you need, on the remote control.
Check if a cassette tape is in this unit.
Tune your radio to an empty AM station so that you hear a lot of noises. Turn the volume up,
then if you hear some signal sound from the radio in response to your pressing buttons on
the remote control, the remote control is working.
(the above tips come from the manual)
You can obtain a free pdf of the user manual for SANYO DVW-7200 (which is the closest to your model) and have a look through it. You can get it from the following: http://www.retrevo.com/support/Sanyo-DVW-7200-DVD-Players-manual/id/311ag906/t/2/
Follow the prompts (it may ask for an email address), and enter the correct number code to download the document, then save the file. I don't know if it will help you or not, but worth a look.
This model does have a way to turn off progressive scan if it is enabled by accident:
press and hold [PLAY] button on front of unit for 5 - 10 seconds then release. This should revert the unit back to normal interlace (if required).