Smps - Denon AVR-4520CI Service Manual

6. SMPS

DC 5V is not output.
Is there damage in U6502
(TOP256YN)?
NO
Is the fuse (F70) blown?
NO
Is there solder short circuit in the PWB
board?
NO
Is there a damaged part?
YES Replace the U6502(TOP256YN) and
D6503.
YES
Is there the damage in D9001/D9002/
D6503?
YES
The solder short part of the PWB board
is repaired.
YES
Check the damage of each part.
119
YES
Replace the parts of damage.
YES
Replace the parts of damage.