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3. SYSTEM TEST FLOW
TEST Start
Make sure
PCBA no short. Especially
power block.
YES
Switch power on
Is
the DC voltage correct?
DC 5V,3.3V,1.8V
YES
Flash upgrade
OK
A
LGE Internal Use Only
NO
Repair short problem.
NO
Repair DC output problem.
1. Check code version
2. Check Crystal clock is 27MHz
NO
3. Check SDRAM clock.
4. Check reset circuit.
5. Check debug setting.
3-4
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Only for training and service purposes
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