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Check TP1 +VPWR is OK?
Check TP2 1.2V ≤ TP2 ?
Check TP3 0.2V ≤ TP3 ≤ 1.267V ?
LGE Internal Use Only
START
Yes
Yes
Yes
Check TP4
0.5V ≤ TP4 ≤ 3.8V ?
Yes
Check next step
No
The Problem may be Logic part
Refer to Logic trouble shoot
No
The Problem may be Logic part
Refer to Logic trouble shoot
No
The Problem may be Logic part
Refer to Logic trouble shoot
No
Check U1000 Physical Damage or
soldering condition
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3. TROUBLE SHOOTING
Only for training and service purposes
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