Check 1.8V; Check D3.3V; Check Bt3.3V - Denon DHT-S514 Service Manual

7. Check 1.8V

Start (MAIN PWB)
Check the input voltage 3 pin of U28.
Is the voltage in the specification? (5V±5%)
Is the 1.8V output from 2 or 4 pin of U28?

8. Check D3.3V

Start (MAIN PWB)
Check the input voltage 3 pin of U30.
Is the voltage in the specification? (5V±5%)
Is the 3.3V output form 2 or 4 pin of U30?

9. Check BT3.3V

Start (MAIN PWB)
Check the input voltage 3 pin of U34.
Is the voltage in the specification? (5V±5%)
Is the 3.3V output from 2 or 4 pin of U34?
Is the 3.3V output form +side of C334?
Finish
YES
YES
Finish
YES
YES
Finish
YES
YES
YES
NO
Check the soldering of L47, Q11, R262, Q12 and R263.
NO
Check the soldering of the U28.
NO
Check the soldering of L47, Q11, R262, Q12 and R263.
NO
Check the soldering of U30.
NO
Check the soldering of L47, Q11, R262, Q12 and R263.
NO
Check the soldering of U34.
NO
Check the soldering of L50 and R239.
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