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Power Checking Process [Step 1]
August 24, 2018 power sequence of laptop motherboard
1] check Adaptor volt[19V] on DC Jack Connector.
2] Check Power Mosfet and Power Resistance.
3] Check [AC in] Signal On Charging IC's Pin.
4] Check Vin[19v] Volt On Charging IC's Pin.
5] Check Adaptor Volt on Switching Mosfet's Pin.
[Note: If This Step is Ok then Go Step 2]
STEP 1
2] Check Power Mosfet and Power Resistance.
3] Check [AC in] Signal On Charging IC's Pin.
4] Check Vin[19v] Volt On Charging IC's Pin.
5] Check Adaptor Volt on Switching Mosfet's Pin.
[Note: If This Step is Ok then Go Step 2]
STEP 1
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Power Checking Process [Step 1]
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power sequence of laptop motherboard