Marantz NR1508 - Page 103

When the results of check item (54) are "10"
(Detection of HPD is OK / Detection of RXSENSE is not OK )
When the results of check item (54) are "20"
(Detection of HPD is not OK / Detection of RXSENSE is OK )
Check item(58). Checking the RXSENSE. :
Does the test point of RXSENSE close to the HDMI output terminal
[N1018] indicate the 3.3 V?
N1018
HDMI
[OUT]
D2+ D2- D1+ D1- D0+ D0- CK+ CK-
Check item(59). Checking the HPD :
Does the voltage of HPD test point close to the HDMI output terminal
[N1018] indicate "Hi" (3-5V)?
N1018
HDMI
[OUT]
HPD
Check the RXSENSE. (Monitor) Check the HPD. (Monitor)
HDMI Rx/Tx [U1027] is faulty.
Replace with a new device.
HDMI Rx/Tx [U1027] is faulty.
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the PCB.
Recheck from check item (3).
If it does not work, replace the PCB.
Check for a short circuit in the TMDS line.
If there is no problem, the HDMI Rx/Tx (U1027) is faulty.
Replace with a new device.
Check for a short circuit in the HPD line.
If there is no problem, the HDMI Rx/Tx (U1027) is faulty.
Replace with a new device.
NO NOYES YES
103
Caution in
servicing
Electrical Mechanical Repair Information Updating