LG CE500 Service Manual page 75

4. TROUBLE SHOOTING
1. Checking Regulator Circuit
- 2.85V Regulator Out
2. Checking VCTCXO Circuit
- 13MHz Clock Output
3. Checking PLL Control Signal
- SEN, SCLK, SDATA
4. Checking FEM & Mobile Switch VC1,VC2,VC3
Tx Output Power
• GSM850 : about 32.5dBm
• DCS/PCS : about 29.5dBm
For this RF Level test case,
TX Stand alone Mode is needed
rafer to standalone test.
Check these points with High
Frequency Probe.
You can see RF signal at Spectrum
Analyzer !
Same as RX Trouble Shooting
Procedure No.1 ~3.
Same as RX Trouble Shooting
Procedure No.4
- 76 -
GSM Tx Path
GSM850 Tx Path
DCS/PCS Tx Path
FL701
U701
U704
U703