While you wait for answers, we may have found some information which could help you.
Click here for Region Free CurrentlyHave a Sanaui San1001 DVD/VCR Combo. Power on for 10 seconds cuts out?
unlock region code for sansui dvr-1028?
id key?
How can I fix my Combo DVD/VCR Sansui san1001 with ERR:03?
Can a DVD recorder finalize DVD-Rs written on a different unit?
Sansui 7" in-car dvd with dual screen (SAN7030)?