LG -L25 Service Manual page 22

3.4.4 Checking RF Tx Level (LTE B26, WCDMA B1, CDMA BC0)
START Set the Phone Tx is ON, Set RGI=90
Check TP2(C1320) at
Check OVER 21dBm
Check TP21,22,23 at U1300
Check TP12(L1308) at U1300
Check OVER -3dBm
LGE Internal Use Only
U1300
NO
Check Over
TP21,22 : Over 3.0V
TP23 : Over 1.7V
NO
NO
Change the Board
PAM Circuit is OK, See next Page
YES
PM8926 is OK
YES
WTR1625L is OK
YES
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3. TROUBLE SHOOTING
Only for training and service purposes