LG VX8560 - Page 80

LG Electronics Inc.
VX8560
4.2.2 PCS Tx
Test Point
Test Point
Circuit Diagram
Circuit Diagram
1. Check
DC Power Supply circuit
2. Check
VCTCXO
Press “##5473784236368” + “SEND” key + “000000” in
Phone idle state.
- Press “5” to enter FCC Test
- Press “1” to enter PCS FCC mode
- Set channel to 600 and AGC to 360
- Measure frequency domain waveform with Spectrum
analyser
- Measure time domain waveform with Oscilloscope
Start
Redownload S/W, Cal
NO
6. Check
Quintplexer
7. Check
Mobile Switch
3. Check
QSC6075
5. Check
PCS PAM
4. Check
RF SAW
Mobile S/W
Quintplexer
VCTCXO
QSC6075
Tx SAW
PAM
_WVYZ\
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