Gsm Tx Part Troubleshooting - LG -D325 Service Manual

3.4 GSM Tx Part Troubleshooting

3.4.1 GSM850/900/1800/1900 Tx
* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form
LGE Internal Use Only
START
GSM Tx TEST SETUP
- BCH : GSM850/GSM900/GSM1800/GSM1900
- TCH : GSM850/GSM900/GSM1800/GSM1900
- Channel : 190ch/37ch/698ch/610ch
- Sector Power : -55 dBm
1. Check
DC Power Supply circuit
2. Check WTR2605 XO
3. Check RF Signal path
Re download S/W & Cal
- 117 -
3. TROUBLE SHOOTING
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