Tx Trouble - LG G1610 Service Manual

4. TROBULE SHOOTING

4.3 TX Trouble

START
HP8922 : Test mode
62 CH, 7 level setting (TCH)
62 CH, -60dBm setting (BCCH)
Spectrum analyzer setting
Oscilloscope setting
1. Check
Regulator Circuit
2. Check
VCTCXO Circuit
3. Check
Control
Signals
4. Check
TX IQ
5. Check
PAM Control
Signal
6. Check
Ant SW &
Mobile SW
Redownload SW, CAL
6
1
2
- 44 -
3
Figure 4-9
5