Samsung galaxy S4 I9500 IR LED Not Working Solution

Samsung galaxy S4 I9500 IR LED Not Working Solution Schematic,Circuit,Diagram

Samsung galaxy S4 I9500 IR LED Not Working Solution Step By Step

Step 1

Abnorma IRLED Part

Step 2

Check the Voltage

VCC_1.8V_AP,VCC_2.8V_AP

C756 = 3.4V

Resolder U600 or U1001

Step 3

Check the Voltage
R1002 = 1.8V
R1003 = 1.8V


Resolder U1001 or heat over UCP5000\

Step 4

check the voltage when
barcode active mode
R1046 = 1.8V
R716 = 1.8V

Resolder U1001 or heat over UCP5000
or Q701 or resolder

R716,717,718,719,720,721,722,1,723,726

Step 5

IRLED
operate correctly?


change RCV module

Step 6

END

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