Marantz SR7013 Service Manual page 127

When the results of check item (3-14.6.) 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(3-14.11.). Checking the RXSENSE :
Does the test point near HDMI output terminal [JK394] indicate
(3.3V)?
JK394
HDMI OUT
[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 (3.2.)
If it does not work, replace the PCB.
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127
When the results of check item (3-14.6.) are "32 or 22 or 12 or
(Detection of HPD is not OK / Detection of RXSENSE is OK )
Check the HPD. (HDMI ZONE2 OUT)
Check item(3-14.12.). Checking the HPD :
Does the test point near HDMI output terminal [JK394] indicate
Hi(3-5V)?
JK394
HDMI OUT
[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 (3.2.)
If it does not work, replace the PCB.
02"