JVC KD-DV6207 Instructions Manual page 4

Introduction
*
* DVD-R recorded in multi-border format is also playable (except for dual layer discs).
* It is possible to play back finalized +R/+RW (Video mode only) discs. However, the use of +R double layer disc on this unit is not
recommended.
*
Note on Region Code:
If you insert a DVD-Video disc of an
incorrect Region Code
4