Denon DRA-800H Service Manual page 69

4.2. Cannot establish a Bluetooth connection
Check the Bluetooth device being used
Is the Bluetooth device compatible with the A2DP
profile?
YES
Is the Bluetooth function enabled on the
Bluetooth device?
YES
Checking the unit
Is the antenna cable inserted correctly into
Network Module?
YES
In the same way as for Network connection troubleshooting, check the Network Module power supply
and HEOS Version is displayed correctly.
NO
Use a device that is A2DP profile compatible.
NO
Enable the Bluetooth function and try connecting
again.
NO
Connect the antenna cable correctly.
4.3. Cannot recognize the connected USB device
Check the USB device being used
Is a USB hub being used?
NO
Is the USB device supported by this unit?
YES
Are [CN813] of the DIGITAL PCB and [BN104] of
the USB PCB correctly connected?
YES
Can the voltage of the USB PCB (5.2V) be
confirmed?
[JK101 : 1pin]
YES
The USB signal circuit between Network Module and [JK101] of the USB PCB are faulty.
69
YES
Do not use a USB hub.
NO
Supports mass storage class and MTP-compatible
devices formatted to FAT16, FAT32 or NTFS.
Checking the unit
NO
Connect the connectors correctly.
NO
The circuit around [IC814] of the DIGITAL PCB is
faulty.