Denon AVR-X3300W Service Manual page 78

NO
Can the NET2.5V output volt-
Is E_POWER2 (U1018 uCOM
age (2.5 V) to U1072 (DC-DC
133 pin) "Hi" ?
Conv.) be confirmed?
YES
NO
Can the NET1.8V... output volt-
Is D5V_POWER (U1018 uCOM
age (1.8 V) to U1071 (DC-DC
136 pin) "Hi" ?
Conv.) be confirmed?
YES
NO
Can the NET1.8V output volt-
Is E_POWER3 (U1018 uCOM
age (1.8 V) to Q1069(FET-SW)
134 pin) "Hi" ?
be confirmed?
YES
Are the versions of the Ethernet SBL and IMG
displayed in Version Check Mode?
YES
The circuit around CY920 is faulty.
NO
The circuit of E_POWER2 be-
tween U1018 and U1072 are
faulty.
YES
The circuit around U1072(DC-
DC.Conv.) is faulty.
NO
The circuit of E_POWER3 be-
tween U1018 and U1071 are
faulty.
YES
The circuit around U1071(DC-
DC.Conv.) is faulty.
NO
The circuit of E_POWER3
between U1018 and Q1069
are faulty.
YES
The circuit around Q1069
(FET-SW) is faulty.
NO
The Ethernet software is faulty.
5.2. 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 Blue-
tooth device?
YES
Is the antenna cable inserted correctly into
CY920?
YES
In the same way as for Network connection troubleshooting, check the CY920 power supply and Eth-
ernet SBL, and that the IMG version is displayed correctly.
78
NO
Use a device that is A2DP profile compatible.
NO
Enable the Bluetooth function and try connect-
ing again.
Checking the unit
NO
Connect the antenna cable correctly.