Network/Usb - Denon AVR-E300 Service Manual

5. Network/USB

5.1. Cannot connect to network
Is the LAN cable properly connected?
Are the AV RECEIVER's network settings correct?
Are the router, hub and other peripherals properly connected?
Are the router's settings correct?
Is a voltage (5V) supplied the CN751 5pin?
Is output voltage (3.3V) supplied from IC751?
Is output voltage (1.2V) supplied from IC752?
Is the version of IMG or Ethernet SBL displayed with Version check
mode?
The IC851 and surrounding circuitry are defective.
Checking the environment
YES
Checking the settings
YES
YES
YES
YES
Checking the set (AV RECEIVER)
YES
YES
YES
YES
NO
Check the LAN cable properly 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 check whether the
subnet mask setting is correct.
NO
Connect properly to peripherals.
Check the router's operating instructions
NO
and set properly.
Check whether there are connection
restrictions due to the MAC address, etc.
NO
Check the SMPS B'D.
NO
The IC751 and surrounding circuitry or
circuitry of 3.3v device is defective.
NO
The IC752 or IC831 and surrounding
circuitry is defective.
NO
The firmware of ethernet is defective.
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