Samsung GT-C3322 Metro Duos GSM900 Receiver 2G Network not Working Solution

 Samsung GT-C3322 Metro Duos GSM900 Receiver 2G Network not Working Solution Schematic , Diagram , Circuit

 Samsung GT-C3322 Metro Duos GSM900 Receiver 2G Network not Working Solution Step by Step 

Step 1

Normal condition

Catch the channel?

Check Ant and Resoleder

L100,C124,C117,L103,C120

Step 2

RFS100

Pin 2

>= -60dBm

Resolder RFS100,L104,L101

Step 3

PAM100

Pin 15

>= -70dBm

Check PAM100

Step 4

PAM100

Pin 17

>= -70dBm

Check F102,L112,C142

Step 5

F102

Pin 8,9

>= -75dBm

Check C144,L113,C145

(crack,open,etc)

Step 6

Check UCP200

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