Marantz SR5011 Service Manual page 88

3-2 HDMI Rx (MN864788) failure detection procedure
Checking device. (HDMI Rx)
Check communication between CPU and the HDMI Rx device.
Check item (7). : Check communication between CPU and the HDMI
Rx device.
Check by reading device ID and revision of each device.
Send the following command from Termite.exe.
HDMI Rx1 (When checking HDMI inputs 1, 2, and 3)
Check communication between RX1 (U1000) and CPU (U1018) .
Send the command "i 0028 0000 0001".
Is the return value "01" ?
HDMI Rx2 (When checking HDMI inputs 4, 5, 6, and 7)
Check communication between RX2 (U1003) and CPU (U1018) .
Send the command "i 0050 0000 00001".
Is the return value "01" ?
If the communication results are not OK
If the communication results are OK
When the results of check item (7) are "the communication results are not OK"
Checking device. (HDMI Rx)
Example :
Check the power supply voltage. (HDMI Rx)
Check item(8).
Does the power supply voltage of the HDMI Rx1 (U1000) or HDMI Rx2 (U1003) indicate the appropriate
voltage (1.1 V, 3.3 V)?
i 0028 0000 0001
The test points are as follows.
HDMI Rx1
If it is normal, "01" is returned.
(When checking HDMI inputs 1, 2, and 3)
38pin
Go to check item (8)
Go to check item (13)
88
Check the power supply voltage. :
HDMI Rx2
(When checking HDMI inputs 4, 5, 6, and 7)
3.3V
1.1V
38pin
112pin
YES NO
Check item(9). Check the power supply voltage. :
Check the power components (U1063/U1065/U1066) and the pat-
tern on the substrate.
If there is no problem, remove the HDMI Rx
the substrate and measure the voltage at the test point of
item (8).
Is the voltage correct (1.1 V or 3.3 V)?
YES
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the PCB.
Go to next page.
3.3V
1.1V
112pin
(U1000 or U1003) from
check
NO
The power supply circuit is
faulty.
Replace the PCB.