Marantz SR7013 Service Manual page 128

When the results of check item (3-14.6.) are "30 or 20 or 10 or
(Detection of HPD is not OK / Detection of RXSENSE is not OK )
Check the TMDS/HPD. (HDMI ZONE2 OUT)
Check item(3-14.13.). Checking the HPD and RXSENSE. :
Does the test point near HDMI output terminal [JK394] indicate
(3.3V)?
Does the test point (HPD) near HDMI output terminal [JK394] indi-
cate "Hi(3-5V)"?
JK394
HDMI OUT
[ZONE2]
HPD
YES NO
Check for a short circuit in the TMDS/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.
00"
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