LG H990ds - FEMiD Block Voltage Check

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reserved. Only training and service purposes
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3. TROUBLE SHOOTING
Checking FEMiD Block
3.4 FEMiD(Front-End Module integrated Duplexer) Block
START
YES
Check Next step
The Problem may be
Logic part
Refer to Logic
trouble shoot
NO
Check
U1200 physical
Damage or soldering
condition
OK
NOT
GOOD
Replace U1101
TOP
TP1(2.7V)
TP2(1.8V)
U1101
TP2(1.8V)
TP1(2.7V)
U1101
(FEMID)
Image Checking Flow
Check
TP1/TP2 High Level?
(2.3V≤TP1 ≤3.0V)
(1.65V≤TP2 ≤1.95V)
Circuit Diagram
17