Marantz NR1200 Service Manual page 96

Check the connection between the HDMI OUT terminal and the TV.
Connect the HDMI OUT terminal and the TV, and then turn on the TV and check the following items.
Checking the HPD/RXSENSE status register. (HDMI TX -> Monitor)
Check item(3-9.3.). Check the HPD and RXSENSE register value of
the HDMI TX device. :
Send the following command from Termite.exe.
Send the command "i 0000 0040 0001".
Move to the branch destination according to the value returned.
"03"
(Detection of HPD is OK / Detection of RXSENSE is OK )
"01"
(Detection of HPD is OK / Detection of RXSENSE is not OK )
"02"
(Detection of HPD is not OK / Detection of RXSENSE is OK )
"00"
(Detection of HPD is not OK / Detection of RXSENSE is not OK )
Example
i 0000 0040 0001
Go to check item (3-9.4.).
Go to check item (3-9.7.).
Go to check item (3-9.8.).
Go to check item (3-9.9.).
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