Samsung SHP-700 Owner's Instructions Manual page 13

Using the Remote Control in a Dark Room (Using BACK LIGHT)
Inserting Batteries
1
2
3
16
Press and push forward on the
part of the battery cover to remove it.
Insert new batteries. Make sure that
the + & - polarities are correct.
Close the cover.
Press the LIGHT button on the remote
control, the Back Light is turned on for
about 5 seconds.
LIGHT button
Press the LIGHT button once again to turn
the Back Light off.