LG LG-D855 - Checking GSM PAM DC Power Circuit

3. TROUBLE SHOOTING
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3.5.2.1 Checking GSM PAM DC Power Circuit
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TP2
TP1
U1301
Check TP1 +VPWR OK?
Check TP2 3.2V≤TP2≤4.2V?
START
Check next step
Yes
Yes
No
No
The Problem may be Other part Check
Logic part
Check DC-DC Power Block Refer to 3.3