Sony PCV-J200 - Manual (Page 67)

System Board 55
SERIAL, HEADPHONES, LINE IN, MIC Connectors
The SERIAL connector is a DB-9 male connector. The HEADPHONES
jack is a stereo mini-jack (3.5 mm) that connects to headphones. The LINE
IN jack is a stereo mini-jack (3.5 mm) that connects to a stereo audio
source (not an audio source from a video device). The MIC jack is a stereo
mini-jack (3.5 mm) that connects to a microphone.
SERIAL connector
Pin Signal Name
1 DCD
2 RXD
3 TXD
4 DTR
5 LOGIC GND
6 DSR
7 RTS
8 CTS
9 RI
SERIAL
1
6
5
9
HEADPHONES
LINE IN
MIC