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Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Tx not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Tx not Working solution 

Samsung gt s7562 Samsung Galaxy S Duos S7562 WCDMA 3G Network Band1 (2100) Tx not Working solution Step By Step
Continuous TX ON
(target power 24 dBm)
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band1 CH : 9750
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB

Step 1

Check Output power of RFS100
≥ 20dBm ?
Check Main ant. contact & L131,
C122, L103, L107
Step 2

Check Output power at
L101, L100, L132 ≥ 20dBm ?
Check the Ant.
switching diagram of U100
TP_ANT_SEL
Check GPIO control (UCP300)
Resolder or Change U100
Step 3
Check L123
≥ 17dBm ?
Resolder or Change F100, L123
Step 4

Check L103
≥ 5dBm ?
Resolder or Change PAM100, L103
Step5

Check U100
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Samsung Galaxy GT S  Duos S7562 WCDMA 3G Network Band1 (2100) Tx  Solution
Samsung Galaxy GT S Duos S7562 WCDMA 3G Network Band1 (2100) Tx Not Working Solution
Samsung Galaxy GT S Duos S7562 WCDMA 3G Network Band1 (2100) Tx  Not Transfer solution

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