Set is built by Panasonic. Very good sets, best B&W of the era IMHO.
To use a DVD on it you would need a modulator also so
find a working VCR.
Without anything you should get a bright snowy picture with
a hiss in the sound. If you do it probably works fine.
I can sell you a service manual but not an owners manual.
It only has schematics & technical info, not instructions.
PM me if interested.
73 Zeno