Network/Usb - Denon AVR-E400 Service Manual

5. Network/USB

5.1. Cannot connect to network
Is the LAN cable properly connected?
Are the AVR-E400/X2000's network settings correct?
Are the router, hub and other peripherals properly connected?
Are the router's settings correct?
Is a voltage (5V) supplied between the pins 2 and 5 of N3601?
Is output voltage (3.3V) supplied from U3601?
Is output voltage (1.2V) supplied from U3604?
Is the version of IMG or Ethernet SBL displayed in Version check
mode?
The U2802 and surrounding circuitry are defective.
Checking the environment
YES
Checking the settings
YES
YES
YES
YES
Checking the set (AVR-E400/X2000)
YES
YES
YES
YES
NO
Turn off the power and check the LAN cable
properly, and then turn the power back on.
Set the IP address and other parameters
properly. For a fixed IP setting, check
NO
whether the IP address is redundant with
that of other devices and the subnet mask
setting is correct.
NO
Connect them properly to peripherals.
Check the router's operating instructions
NO
and set it properly.
Check whether there are connection
restrictions due to the MAC address, etc.
NO
The circuit from AC inlet to N3601 is defective.
NO
The U3601 and surrounding circuitry or
circuitry of 3.3V device are defective.
NO
The U3604 or U2602 and surrounding
circuitry are defective.
NO
The firmware of ethernet is defective.
92