Denon AVR-X4500H Service Manual page 137

When the results of check item (3-16.4.) are "00"
(Detection of HPD is not OK / Detection of RXSENSE is not OK )
Check the TMDS/HPD. (HDMI OUT1)
Check item(3-16.10.). Checking the HPD and RXSENSE. :
Does the test point near HDMI output terminal [JK431] indicate
(3.3V)?
Does the test point (HPD) near HDMI output terminal [JK431] indi-
cate "Hi(3-5V)"?
JK431
HDMI OUT
[MONITOR1]
HPD
YES NO
Check for a short circuit in the TMDS/HPD line.
If there is no problem, the HDMI Tx [IC431] is faulty.
Replace with a new device.
HDMI Tx [IC431] is faulty.
Replace with a new device.
Recheck from check item (3.4.)
If it does not work, replace the PCB.
137