Denon AVR-X3300W Service Manual page 77

5. Network / Bluetooth / USB
5.1. Cannot connect to the network
Check the connection environment
Is the LAN cable correctly inserted?
YES
Check the setting
Are the network settings of this unit correct?
YES
Are peripheral devices such as the router and
hub connected to this unit correctly?
YES
Are the router settings correct?
YES
Checking the unit
Can the voltage (5V) be confirmed between pin
2 and pin 5 of CN4141?
YES
NO
Insert the LAN cable correctly and then turn on
the power again.
NO
Set the IP address, etc. correctly.
When the static IP address is used, check that no
other devices have the same IP address and that
the subnet mask settings are correct.
NO
Connect the peripheral devices correctly.
NO
Check the instruction manual of the router and
configure the settings correctly.
Check that there are no connection restrictions
by MAC addresses, etc.
NO
The circuit between the AC inlet and CN4141 is
faulty.
Check the SMPS PCB.
NO
Can the D3.3V2 output volt-
Is D5V_POWER (U1018 uCOM
age (3.3 V) to U1067 (DC-DC
136 pin) "Hi" ?
Conv.) be confirmed?
YES
NO
Can the NET3.3V output volt-
Is E_POWER1 (U1018 uCOM
age (3.3 V) to Q1071 (FET-SW)
132 pin) "Hi" ?
be confirmed?
YES
NO
Can the NET1.25V output volt-
Is E_POWER4 (U1018 uCOM
age (1.25V) to U1070 (DC-DC
135 pin) "Hi" ?
Conv.) be confirmed?
YES
77
NO
The circuit of D5V_POWER
between U1018 and U1067
are faulty.
YES
The circuit around U1067(DC-
DC.Conv.) is faulty.
NO
The circuit of E_POWER1
between U1018 and Q1071
are faulty.
YES
The circuit around Q1071
(FET-SW) is faulty.
NO
The circuit of E_POWER4 be-
tween U1018 and U1070 are
faulty.
YES
The circuit around U1070(DC-
DC.Conv.) is faulty.
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