Connector pin assignments

Audio-in (microphone)

Pin

Signal

 

 

1

Audio signal in

 

 

2

Audio signal in

 

 

3

Ground

 

 

Audio-out (headphone)

Pin

Signal

 

 

1

Audio out, left channel

 

 

2

Audio out, right channel

 

 

3

Ground

 

 

9–2

Maintenance and Service Guide

Page 106
Image 106
Hitachi 2730P manual Audio-in microphone, Audio-out headphone