Samsung DVD-R155 Service Manual page 114

Circuit Operating Descriptions
6. Ouput for Audio/Video Input selection.
CVBS ouput as the result of input selection is inputted to SAA7138 A/V Decoder to make ITU-R BT.
656 Digital Video Audio ouput as the result of input selection is inputted built-in Audio ADC in S5L3210
7. ETC
RGB signal form SCART2(AV2) of DVD-R155 Euro model and S-Video signal from S-Video of DVD-R155
ASAI Model inputted directly to SAA7138 Video Decoder regardless selection of HA118827 A/V Multiplexer
becase they no need to select.(There are only 1 RGB Input in Euro model, and also only one S-Video Input for
ASIA Model)
13-14 Samsung Electronics