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Samsung galaxy Not 2 GT-N7100 GSM850/GSM900 TX 2G Network Not Working Solution

Samsung galaxy Not 2 GT-N7100 GSM850/GSM900 TX 2G Network Not Working Solution Schematic,Circuit,Diagram

Samsung galaxy Not 2 GT-N7100 GSM850/GSM900 TX 2G Network Not Working Solution Step By Step

Step 1
U100 PIN11 : About
30dBm ?
CHECK soldered
– RFS100,C103, L102
C107,L100,ANT100

Step 2

Check the Voltage at
C101 = VDD_2V85_SUE2 ?
Resolder or change
U100, C101

Step 3

Check C129,L135,L109
: About 30dBm ?
Resolder or change
C129,L135,L109

Step 4

Check the Voltage at
R105,C134=VOUT_CHARGER?
Resolder or change
U103,R105,C134

Step 5

Check C139,C124
: About 0dBm ?
Resolder or change
C139,C124

Step 6

Check the voltage at
{C150 = VOUT_CHARGER ?}
& {C165, C166, C167
= VOUT_CHARGER?}
& {C149, C174 = 2.85V ?}
& {C144, C172 = 2.65V ?}
& {C148, C177 = 1.8V?}
& {C147, C175, C173 = 1.2V?}
Resolder or change
U104

Step 7

Check the freq. at
OSC100 PIN 1,3: 26MHz ?
Change or resolder
OSC100

Step 8

GSM850/900 Transmitter is O.K?
Resolder or change
UCP300

Step 9

END
Unofficial Support Site For This Phone By welcome Zone Haldwani 

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Samsung Galaxy  Not 2 GT-N7100 GSM850/GSM900 TX 2G Network not working Solution 
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Updated: 09/12/2015 — 11:03 PM

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