Smps - Denon AVR-X3100W Service Manual

6. SMPS

DC 5V is not output.
Is IC901 (TOP256YN) damaged?
NO
Has a fuse (F9001) broken?
NO
Are there any short circuits caused by
the soldering of the PCB?
NO
Are any parts damaged?
YES
Replace the IC901 (TOP256YN) and
D9001 / D9002 / D9003 / D9004.
YES
Are there the damage in IC901 and
D9001 / D9002 / D9003 / D9004 /
C9004?
YES
Repair the short circuited area(s) by the
soldering of the PCB.
YES
Check the damage of each part.
105
YES
Replace the damaged part(s).
YES
Replace the damaged part(s).