LG VX5400 Service Manual page 77

4.2.2 PCS Tx
Press "##5473784236368" + "SEND" key + "000000" in
Phone idle state.
? Press "5" 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
DC Power Supply circuit
SBI Control Signal
Copyright@2007 LG Electronics. Inc. All right reserved.
Only for training and serving purposes
Quintplxer
Mobile SW
U108
U109
PCS PAM
DCN PAM
RFT6100
U112
Start
1. Check
2. Check
VCTCXO
3. Check
Test Point
Test Point
Circuit Diagram
Circuit Diagram
-77-
4. Check
RFT 6100
5. Check
SAW Filter
6. Check
PAM Circuit
NO
8. Check
Quintplexer and Mobile Switch
Redownload S/W, Cal
LGE Internal Use Only