Tx Part Trouble - LG KG70c Service Manual

KG70C

3.2 Tx Part Trouble

3.2 Tx Part Trouble
Test Point Test Point
Checking Flow Checking Flow
√ Press " SPC Code " in Phone idle state √ Press " SPC Code " in Phone idle state
√ Press right key insert FCC M ode √ Press right key insert FCC M ode
-Set channel384&AGC 400 -Set channel384&AGC 400
√ Spectrum analyzer setting √ Spectrum analyzer setting
√ Oscilloscope setting √ Oscilloscope setting
RFT6122 RFT6122
PAM PAM
VCTXO VCTXO
START START
1. Check 1. Check
Regulator Circuit Regulator Circuit
2. Check 2. Check
VCTCXO Circuit VCTCXO Circuit
3. Check 3. Check
SBI Control Signal SBI Control Signal
27
Mobile S/W Mobile S/W
Duplexer Duplexer
4. Check 4. Check
RFT6122 Circuit RFT6122 Circuit
5. Check 5. Check
PAM Control Signal PAM Control Signal
6. Check 6. Check
Duplexer & M obile SW Duplexer & M obile SW
√ Redownload SW, CAL √ Redownload SW, CAL
Figure 3-2 Figure 3-2