Denon DHT-S716H - Page 39

TROUBLE SHOOTING
1. The power cannot be turned on
g
Can you update the F/W via Network?
See 2. Updating via Network.
Is the front indicator blinking in blue?
NO
Execute Factory Reset.
Press and hold the "
Bluetooth
" button, then insert the AC cable and
wait for more than 5 seconds. See
5. Factory Reset.
Can the power be turned on?
Execute Software Reset.
Press and hold the "
Bluetooth
" and "
Connect
"
buttons for 5 seconds or more.
See 6. Software Reset (Clear user settings).
YES
Can you update the F/W via USB?
See
3. Updating via USB.
See 12. USB ash drive not recognized.
See below.
10. Cannot connect to the network by wired LAN
11. Cannot connect to the network by wireless LAN
Are there any improper connections in
the connectors between each PCB?
Connect the connectors correctly.
MAIN PCB
Check the voltage
[J12] 24V
SMPS PCB
Check the voltage
[CN1 : AC]
Change the SMPS PCB or cable.
Check the AC cable.
Check the voltage
[TP21] 5V
Check the parts between [J12] and
the secondary circuit (regulator) and
replace any faulty parts.
The circuit around [LED and Network Module] is faulty.
YES
YES
YES
YES
YES
NONO
NO
NO
NO
NO
Insert and unplug the AC cable into the outlet
at intervals of about 5 minutes 2-3 times.
NO
NO
Can you update the F/W via Network?
See 2. Updating via Network.
YES
39
Caution in
servicing
Electrical Mechanical Repair Information Updating