Denon AVR-X2300W Service Manual page 93

3-4 HDMI transmission IC (MN864788) failure detection procedure
Check the output terminal.
Check item(28). Check the video output port for failure. :
Check the Monitor 1 output video signal is correct.
After checking the Monitor 1, change the HDMI cable connection from OUT1 to OUT2.
Turn off the AV AMP and turn it on again.
To check under the same conditions, use the same procedure as that for checking Monitor 1 when
checking the Monitor 2 output.
No video signal is output from both Monitor 1 and
Monitor 2.
No video signal is output from Monitor 1 only.
No video signal is output from Monitor 2 only.
Go to check item (29)
Go to check item (35)
Go to check item (42)
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No video signal is output from both Monitor 1 and Monitor 2.
Checking device. HDMI (Tx)
Check the I2C communication line.
Check item(29). Check communication between CPU and the
HDMI Tx device. :
Send the following command from Termite.exe.
Send the command "i 0000 0000 0001".
Is the return value "01" ?
If the communication results are not OK
If the communication results are OK
Example
If it is normal, "01" is returned.
Go to check item (30)
Go to check item (33)