Marantz AV7701, Service Manual

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Checking the settings
YES
YES
YES
YES
Are the AV RECEIVER's network settings correct?
Are the router, hub and other peripherals properly connected?
Are the router's settings correct?
Set the IP address and other parameters
properly. For a fixed IP setting, check
whether the IP address is redundant with
that of other devices, and check whether the
subnet mask setting is correct.
Connect properly to peripherals.
Check the router's operating instructions
and set properly.
Check whether there are connection
restrictions due to the MAC address, etc.
NO
NO
NO
5. Network/USB
5.1. Cannot connect to network
YES
Is the LAN cable properly connected?
Check the LAN cable properly then turn the
power back on.
NO
Checking the environment
The IC322 and surrounding circuitry are defective.
Checking the set (AV RECEIVER)
YES
YES
YES
YES
Is output voltage (3.3V) supplied from IC303?
Is output voltage (1.2V) supplied from IC305?
Is the version of IMG or Ethernet SBL displayed with Version check
mode?
Is a voltage (5V) supplied between CN903 2pin and 4pin?
The IC303 and surrounding circuitry or
circuitry of 3.3v device is defective.
The IC305 or IC390 and surrounding
circuitry is defective.
The firmware of ethernet is defective.
The circuit from AC inlet to CN903 is defective.
NO
NO
NO
NO