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LG U8550 Service Manual page 146

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ANTSW0

EGSM Tx

EGSM Rx

DCS Tx

DCS Rx

PCS RX

WCDMA

Figure 4-19-1. Antenna Switch Module Logic

ANTSW1

H

L

H

L

H

H

H

L

H

H

H

L

- 147 -

4. TROUBLE SHOOTING

ANTSW2

ANTSW3

L

L

H

H

L

L

H

L

L

L

L

L

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