Siemens SXG 75 Service Repair Documentation page 21

Circuit diagram (sheet 10)
The oscillator output signal TCXO is connected to the power management IC (PMIC, N1300, Pin
58).
The oscillator output signals RFR6250_TCXO and RTR6250_TCXO are connected to the RF chips
RFR6250 (N600, Pin 33) resp. RTR6250 (D500, Pin 6).
To compensate frequency drifts the oscillator frequency is controlled by the TRX_LO_ADJ signal,
generated through the MSM6250 (D800, SW_TP902).
Circuit diagram (sheet 9)
Technical Documentation
TD_Repair_L3_SXG75_R1.0.pdf
Company Confidential
2006©BenQ
Release 1.0
01/2006
Page 21 of 73