Mitsubishi DPLUS 74SB -BKA Service Manual page 138

Pin Descriptions
Pin Descriptions
Pin No. Pin Name
1 Red OSD Input
2 Green OSD Input
3 Blue OSD Input
4 OSD Select
Schematic
7-37
Description
These inputs accept standard TTL or
CMOS input. Each color is either fully on
(logic high) or fully off (logic low). Unused
pins should be connected to ground with a
47k resistor.
This input accepts a standard TTL or
CMOS input.
H = OSD
L = Video
Connect to ground with a 47k resistor if not
using OSD.