HP WF1907

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Check the 3.3V power are supplied on I302 pin 2, 4.
OK
NG
Check if the voltage on I302 pin 3 that is
power DC at 5V.
OK
Failure Point
I302 is failure.
NG
Failure Point
1) Printed wire broke between P301 pin 5, 6
and I302.
2) FB301, FB302 are open.
3) Check power board.
Check the 1.8V power are supplied on I303 pin 2, 4.
Check if the voltage on I303 pin 3 that is
power DC at 3.3V from the I302.
OK
Failure Point
I303 is failure.
NG
Failure Point
1) Printed wire broke between I302 pin 2, 4
andI303pin3.
2) I302 is failure.
OK
NG
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