Denon DHT-S216 Quick Start Manual page 37

5. HDMI ARC is not operating
Check the voltage.
MAIN PCB
[U1 : STB_5V, U612 : STB_3V3]
OK
Replace the MAIN PCB.
6. OPTICAL is not operating
Check the voltage.
MAIN PCB
[U1: STB_5V, U612: STB_3V3]
OK
Check the PTICAL PCB.
Check the soldering of OPTICAL[U10].
OK
Replace the OPTICAL[U10].
NG
Replace the [U1 or U612].
NG
Replace the [U1 or U612].
NG
Replace the MAIN PCB.
7. Sound bar is interrupted
Check that the AC plug is inserted.
NG
Remove and re-insert the AC plug.
NG
Check the connection of the cable.
OK
Replace the BT PCB.
37
OK
Re-insert the AC plug.
NG
Replace the MAIN PCB.