Samsung Galaxy Note 3 SM-N900 WCDMA BAND8 TX 3G Network not Working Solution

Samsung Galaxy Note 3 SM-N900 WCDMA BAND1 TX 3G Network not Working Solution Schematic, Diagram , Circuit

Samsung Galaxy Note 3 SM-N900 WCDMA BAND1 TX 3G Network not Working Solution Step by Step 

Step 1

F100 PIN 4 :

About 22dBm ?

CHECK soldered

- CN100, L100, C10

Step 2

Check F100 PIN 6

About 22dBm

Resolder or change

F100

Step 3

Check the Voltage at

C104 = VBATT ?

Resolder or change

C104, L110

Step 4

Check component

oldering status OK at

F101

Resolder or change

F101

Step 5

Check F101 PIN 2

About 22dBm ?

Resolder or change

F101

Step 6

Check U101 PIN 2

About 22dBm ?

Resolder or change

L114, C141

Step 7

Check U101 PIN 26

About 0dBm?

Resolder or change

U101

Step 8

Check the freq. at

OSC100 PIN 4 : 26MHz ?

Change or resolder

OSC100

Step 9

Check component

soldering status ok at

U103

Step 10

Band8 Transmitter is O.K?

 Resolder or change

UCP300

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Samsung Galaxy Note 3 SM-N900 WCDMA BAND8 TX 3G Network not working Solution 

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