Checking The Dc/Dc Converter Circuit - NEC NMV 1700V Service Manual

10. Checking the DC/DC converter circuit

Check if the 5V is output from I322
OK
Check the output of 3.3V line voltage
OK
Printed wire broke between I323 pin 2 and IC 315 power supply pin.
Trouble Shooting
pin 2.
Printed wire broke between I322 pin
NG
1 and L314 pin 2.
from I323 pin 2.
Is the output FB335 being inputted
NG
to I315 pin 3?
NG
OK
Printed wire broke between I323
pin 3 and output of FB335.
Failure point
I323 failure
Failure point
Failure point
NMV 1700V
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