Marantz AV7703 Service Manual page 103

When the results of check item (19) are "31 or 21 or 11 or
(Detection of HPD is OK / Detection of RXSENSE is not OK )
Check the TMDS. (HDMI ZONE2 OUT)
Check item(23). Checking the RXSENSE. :
Does the test point near HDMI output terminal (JK394) indicate
(3.3V)?
JK394 ZONE2
YES NO
Check for a short circuit in the TMDS line.
If there is no problem, the HDMI Switcher1 (IC391) is faulty.
Replace with a new device.
HDMI Switcher1 (IC391) is faulty.
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the PCB.
01" When the results of check item (19) are
(Detection of HPD is not OK / Detection of RXSENSE is OK )
Check the HPD. (HDMI ZONE2 OUT)
Check item(24). Checking the HPD. :
Does the test point near HDMI output terminal (JK394) indicate
Hi(3-5V)?
JK394 ZONE2
HPD
YES NO
Check for a short circuit in the HPD line.
If there is no problem, the HDMI Switcher1 (IC391) is faulty.
Replace with a new device.
HDMI Switcher1 (IC391) is faulty.
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the PCB.
103
"32 or 22 or 12 or 02"