LG -D620 Service Manual page 44

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Check TP1 High Level ?
LGE Internal Use Only
START
(2.5V≤TP1 ≤3.0V)
Yes
Check TP2 High Level ?
(1.65V≤TP1 ≤1.95V)
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
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3. TROUBLE SHOOTING
Only for training and service purposes

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