Denon AVR-X6400H Service Manual page 133

When the results of check item (79) are "01"
(Detection of HPD is OK / Detection of RXSENSE is not OK )
Check the RXSENSE. (OUT2)
Check item(83). Checking the RXSENSE. :
Does the test point of RXSENSE close to the HDMI output terminal
[N3402] indicate the (3.3V)?
N3402
HDMI OUT
[MONITOR1]
YES NO
Check for a short circuit in the TMDS line.
If there is no problem, the HDMI Tx [U3401] is faulty.
Replace with a new device.
HDMI Tx [U3401] is faulty.
Replace with a new device.
Recheck from check item (4).
If it does not work, replace the PCB.
When the results of check item (79) are "02"
(Detection of HPD is not OK / Detection of RXSENSE is OK )
Check the HPD. (OUT2)
Check item(84). Checking the HPD :
Does the voltage of HPD test point close to the HDMI output terminal
[N3402] indicate "Hi" (3-5 V)?
N3402
HDMI OUT
[MONITOR1]
L3806:HPD
YES NO
Check for a short circuit in the HPD line.
If there is no problem, the HDMI Tx [U3401] is faulty.
Replace with a new device.
HDMI Tx [U3401] is faulty.
Replace with a new device.
Recheck from check item (4).
If it does not work, replace the PCB.
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