Speco Technologies HTD8SCS - Manual (Page 9)

INTERNAL COMPONENTS
Video Test Terminal
LEFT
UP
RIGHT
SET
OSD Joystick Switch
LEFT
DOWN
Push the Joy stick for one second, and the OSD appears
7
Push the Joy stick for one second, and the OSD appears
on the screen. Move the Joy Stick up, down, left & right to
control the OSD functions.