Sony PCV-E204 - Manual (Page 73)

System Board 65
CD In Connector
The CD In connector (J12) on the motherboard is a 1 x 4-pin header
connector and connects to the DVD-ROM drive’s audio output connector.
J12
Pin Signal Name
1 LEFT
2 GND
3 GND
4 RIGHT
KY0062.VSD
J12