LG LM-X120HM Service Manual page 28

3.5 GSM, WCDMA, LTE PART
3.5.1 GSM RF PART
GSM850/900/1800/1900 Tx
Main
Bot
LGE Internal Use Only
1.GSM850/GSM900 TX PATH
2.DCS1800/PCS1900 TX PATH
3.COMMON TX/RX PATH
Copyright ⓒ 2019 LG Electronics. Inc. All right reserved.
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3. TROUBLE SHOOTING
Only training and service purposes