Marantz AV7703 Service Manual page 114

When the results of check item (45) are "10"
(Detection of HPD is OK / Detection of RXSENSE is not OK )
Check the RXSENSE. (Monitor1)
Check item(49). Checking the RXSENSE. :
Does the test point of RXSENSE close to the HDMI output terminal
(JK431) indicate the 3.3 V?
JK431
YES NO
Check for a short circuit in the TMDS 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 (5).
If it does not work, replace the PCB.
When the results of check item (45) are "20"
(Detection of HPD is not OK / Detection of RXSENSE is OK )
Check the HPD. (Monitor1)
Check item(50). Checking the HPD. :
Does the voltage of HPD test point close to the HDMI output termi-
nal (JK431) indicate Hi (3-5 V)?
JK431
HPD
YES NO
Check for a short circuit in the 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 (5).
If it does not work, replace the PCB.
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