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DNI<br />

L11006<br />

L11002 10n<br />

L11012 10n<br />

L11078 8.2n<br />

C11124<br />

1p<br />

LGE Internal Use Only<br />

C11123<br />

1.8p<br />

PRX_UG850_INP<br />

PRX_UG850_INM<br />

TP3<br />

PA_DET_2<br />

Set the phone Tx is On and PDM is 90<br />

Check TP3<br />

Over 21 dBm?<br />

No<br />

Check TP2<br />

PA _R1 ≤ 2.6V<br />

No<br />

Check TP1<br />

Over -3 dBm?<br />

No<br />

C1271<br />

12p<br />

C11122 330p<br />

R1204<br />

36<br />

Change the board<br />

C11121<br />

2.2u<br />

Rev.E<br />

ACPM-5505-TR1<br />

11<br />

PGND<br />

U11009<br />

10<br />

9<br />

8<br />

7<br />

6<br />

VCC2<br />

RFOUT<br />

ISO<br />

GND<br />

CPL<br />

VCC1<br />

RFIN<br />

NC<br />

VMODE<br />

VEN<br />

1<br />

2<br />

3<br />

4<br />

5<br />

5.8 dB ATTN.<br />

R1205 R1206<br />

150<br />

150<br />

+VSMPS<br />

EAN62404201<br />

C11116 100p<br />

Yes<br />

Yes<br />

Yes<br />

- 84 -<br />

TP2<br />

100p<br />

C11117<br />

330p<br />

C11120<br />

100p<br />

C11118<br />

PDET_IN_WTR1605L<br />

C11119<br />

2.2u<br />

+VPWR<br />

PA0_R0<br />

PA0_R1<br />

PA_ON3_U850<br />

VEN<br />

RF Tx Level is OK<br />

Check MDM9615M<br />

Check WTR1605L<br />

4. TROUBLE SHOOTING<br />

TP1<br />

DNI<br />

C11112 33p<br />

L11077<br />

L11075<br />

8.2n<br />

TX_OUT_U850<br />

Copyright © 2012 LG Electronics. Inc. All right reserved.<br />

Only for training and service purposes

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