Denon DHT-S514 - Check BK5 V; Check ADC3.3 V; Check BK3.3 V

20
4. Check BK5V
5. Check ADC3.3V
Check the input voltage 1 pin of U23.
Is the voltage in the specication? (5V±5%)
Is the 5V output from 5 pin of U23?
Start (MAIN PWB)
Finish
Check the soldering of L44.
Check the soldering of the U23.
NO
NO
YES
YES
Check the input voltage 1 pin of U25.
Is the voltage in the specication? (5V±5%)
Is the 3.3V output form 5 pin of U25.
Start (MAIN PWB)
Finish
Check the soldering of the L44.
Check the soldering of the U25.
NO
NO
YES
YES
6. Check BK3.3V
Check the input voltage 3 pin of U26.
Is the voltage in the specication? (5V±5%)
Is the 3.3V output form 3 pin of U26?
Start (MAIN PWB)
Finish
Check the soldering of the D6.
Check the soldering of the U26.
NO
NO
YES
YES