Denon AVR-X3500H Service Manual page 130

When the results of check item (3-13.11.) are "00"
(Detection of HPD is not OK / Detection of RXSENSE is not OK )
Checking the HPD/RXSENSE status register. (OUT2)
Check item(3-13.17.). Checking the HPD and RXSENSE. :
Does the test point of RXSENSE close to the HDMI output terminal
[N1037] indicate the (3.3V)?
Does the voltage of HPD test point close to the HDMI output terminal
[N1037] indicate Hi (3-5 V)?
N1037
HDMI OUT
[MONITOR2]
HPD
YES NO
Check for a short circuit in the TMDS/ HPD line.
If there is no problem, the HDMI Tx [U1001] is faulty.
Replace with a new device.
HDMI Tx [U1001] is faulty.
Replace with a new device.
Recheck from check item (3.4.)
If it does not work, replace the PCB.
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