Siemens C75 - Charging the battery

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Copyright 2005© Siemens AG
Page 16 of 37
Service Repair Documentation
Level 2.5e – C75
Release 1.0
Top View :
Switching Matrix:
select mode Vsw 1 Vsw 2
GSM900/DCS1800/PCS1900 RX Low Low
EGSM TX high Low
DCS1800/PCS1900 TX Low High
Pin assignment:
1 Antenna 15 EGSM900 RX1
2 GND 16 EGSM900 RX2
3 Vsw2 (DCS1800/PCS1900 TX control) 17 DCS1800 RX1
4 GND 18 DCS1800 RX2
5 DCS1800/PCS1900 TX 19 PCS1900 RX1
6 GND 20 PCS1900 RX2
7 GND 21 GND
8 GND 22 GND
9 GND 23 GND
10 GND 24 GND
11 GND 25 GND
12 GND 26 Vsw1 (EGSM900 TX control)
13 GND 27 EGSM900 TX
14 28 GND