System Connector J1; Power Connector J2 - Ericsson EF738 Service Manual

System Connector J1

12
11
J1-pin H-pin Signal
1 10 DGND
2 12 DCIO
3 4 AGND
4 2 ATMS
5 - HOOKSNS
6 1 AFMS
7 6 MUTE
8 3 EXTAUD
9 5 PORTHF
10 8 VDD
11 9 DFMS
12 11 DTMS
J1-pin = HandsFree Unit System Connector J1 pin
H-pin = Holder System Connector pin

Power Connector J2

3 1
2
4
2
1
Specification
Digital ground & DC return
DC voltage supply to phone power
Audio signal ground & 0V reference
Audio to mobile station
Hook sense (connected to cradle, not phone)
Audio from mobile station
Music Mute
External analog audio accessory sense
Portable handsfree sense
Logic reference, status ON
Data from mobile station
Data to mobile station
Accessories
1 GND
2 +12VDC
3 MUTEINV
4 n.c.
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