Tx Part Trouble Shooting; Dcn Tx - LG KF600w Service Manual

4.2 Tx Part Trouble

4.2.1 DCN Tx

Press "##5473784236368" + "SEND" key + "000000" in
Phone idle state.
Press "6" to enter FCC Test
Press "2" to enter CDMA FCC mode
- Set channel to 384 and AGC to 360
Measure frequency domain waveform with Spectrum
analyser
Measure time domain waveform with Oscilloscope
1. Check
DC Power Supply circuit
2. Check
VCTCXO
3. Check
RFT6150
Diplexer
Mobile S/W
Checking Flow
Start
Test Point
Test Point
DCN_Tx
SAW filter
DCN PAM
DCN_Duplexer
Checking Flow
RFT6150
4. Check
RF SAW
5. Check
RF Dual PAM
6. Check
Duplexer
7. Check
Diplexer
NO
8. Check
Mobile Switch
Redownload S/W, Cal