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Samsung gt s7562 Samsung Galaxy S Duos S7562 DCS/PCS Tx Network not Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 DCS/PCS Tx Network not Working solution Schematic, Diagram,Circuit

Samsung gt s7562 Samsung Galaxy S Duos S7562 DCS/PCS Tx not Working solution
Step by Step

Continuous TX ON


CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
DCS CH : 685
PCS CH : 661
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Step 1
Check Output power of RFS100
≥ 28.5 dBm ?
Check Main ant. contact & L131,
L103, C122, L107,

Step 2
Check Output power at
R100, C164 ≥ 8dBm ?
Check the Ant.
switching diagram of U100
TP_ANT_SEL
Check GPIO control (UCP300)
Resolder or Change U100
Step 3
U100 normally is operated.
Change U100
Step 4
Check UCP300

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Samsung Galaxy GT S  Duos S7562   DCS/PCS Tx Network Solution
Samsung Galaxy GT S Duos S7562   DCS/PCS Tx Network Not Working Solution
Samsung Galaxy GT S Duos S7562 DCS/PCS Tx  Network Not Transfer solution

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Updated: 09/12/2015 — 11:03 PM

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