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