That looks to be the right model. There seems to be only the one
DVD/VCR combo the Sharp has with that model # DVR550U or
DV-RW550U as it is on the manual. Oddly the current Sharp
DV-RW550U is a Blu-ray Disk Player. I couldn't find the combo
DVD/VCR recorder on the Sharp site, except when you search the
"Accessories & Supplies", where it is listed as DVR550U under the
DV-RW550U listing. Oddly they also show the Remote as
compatibile for both a DV-RW550U and a DVRW550U. The
manual is listed as compatibile with a DVRW550U.
My email is
DLMillerJR85@gmail.com.
Send me an email and I'll reply to it and attach the manual for you.