Samsung gt s7562 Samsung Galaxy S Duos S7562 DCS Rx not Working solution

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Samsung gt s7562 Samsung Galaxy S Duos S7562 DCS Rx network
 not  Working solution

Samsung gt s7562 Samsung Galaxy S Duos S7562 DCS Rx network
 not Working solution Step By Step

Step 1

Continuous Rx ON
Channel : 698 CH
Cell power : -60dBm

Step 2

U100 PIN30 ≥ -65dBm?
(L141 using spectrum analyzer)

Resolder L141 or RFS100
Check RFcable

Step 3

U100 PIN23, L119 ≥ -68dBm?

Check the U100`s
Ant. selection diagram

Resolder L119
or Change U100

Check Main chip(UCP300)

Step 4

Check Main chip(UCP300)

Resolder C121, C164, L120
or Change F103

Step 5

Change U100

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