6-5
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Check the PHD signal is ouput on R432?
OK
NG
Failure point
1) IC401 failure.
2) Printed wire broke between
U401 and IC301 PIN27.
3) R432 or C315 failure.
Check the data signal output on IC301 R,
G, B data pin?.
OK
NG
Failure point
1) IC401 failure.
2) Printed wire broke between
IC401, IC301 line.
Failure point
IC301 failure