Sony CMD-J26 Service Manual page 7

Audio In, Audio Out and Audio GND:
5-pin interface: RX, TX, RTS(RFR), CTS and Gen I/O(DTR or DCD):
√ √
√
√
√ √
√
√ √
√
√ √
√
12
√
√
√ √
√
√ √
1
Ω
√ √
√ √
√ √
√