LG LG-K430DSF - 3. TROUBLE SHOOTING; 3.1 Checking XO Block

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3. TROUBLE SHOOTING
3.1 Checking XO Block
The out put frequency(26MHz) of VTCXO(X5001) is used as the reference one of MT6169
Image
Checking Flow
Circuit Diagram
TP1
Main
Top
X5001
TP1
START
Check TP1
Is it 26MHz?
XO Circuit is OK.
Check next step
YES
NO
Replace X5001 and then
check TP1
Is it 26MHz?
XO Circuit is OK.
Check next step
YES
NO
The Problem may be
Logic part
Refer to Logic trouble shoot