Gsm Rx Part Troubleshooting - LG -D175F Service Manual

3.3 GSM Rx Part Troubleshooting

3.3.1 GSM850/900 Rx
* 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
Rx TEST SETUP
- BCH :GSM850/EGSM for GSM900
- TCH: GSM850/EGSM for GSM900
- Channel : 190/37 for GSM 900
- Sector Power : -30 dBm
1. Check DC Power Supply circuit
2. Check XO
3. Check RF Signal path
Re download S/W & Cal
- 81 -
3. TROUBLE SHOOTING
Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes