Marantz SR5012 Service Manual page 120

When the results of check item (56) are "No video signal is output from both Monitor 1 and Monitor 2".
Checking operation between the HDMI (Rx) device and the HDMI device (Tx).
Checking operation between the HDMI (Tx) device and TV.
HDMI IN1
HDMI IN4
Video Conversion OFF
Checking the TMDS status register (HDMI Rx -> HDMI Tx)
Check item(57). Check the TMDS CLK detection status of the
register.
Send the following command from Termite.exe.
Send the command "i 0006 00FF 0001".
When checking the signal path from HDMI1 to HDMI OUT1
"72" : Go to YES.
"74" : Go to NO.
When checking the signal path from HDMI4 IN to HDMI OUT1
"71" : Go to YES.
"74" : Go to NO.
NO
Check item(58). Checking the TMDS input. :
TMDS waveform at the following points.
Between HDMI Rx1 and HDMI Tx
80/81/83/84/86/87/89/90 pin
U1039
Between HDMI Rx2 and HDMI Tx
93/94/96/97/99/100/102/103 pin
NO
HDMI Tx [U1039] is faulty.
Replace with a new device.
YES
Recheck from check item (3).
If it does not work, replace the PCB.
HDMI OUT1/4
Example
The first operation : Checking
YES
between Monitor 1 and the TV.
Go to check item (59)
Next operation : Checking be-
tween Monitor 2 and the TV.
Go to check item (66)
3.3V
TMDS Signal
Example of waveform in check ① Example of waveform in check ②
Voltage scale : 1.0V/div Voltage scale : 1.0V/div
Time scale : 20ms/div
NO
If it is NO between HDMI Rx1 and HDMI Tx.
HDMI Rx1 [U1000] is faulty.
Replace with a new device.
If it is NO between HDMI Rx2 and HDMI Tx.
HDMI Rx2 [U1003] is faulty.
Replace with a new device.
Checking between Monitor1 and the TV.
Connect Monitor1 to the TV and check the following items with the TV turned on.
Checking the HPD/RXSENSE status register. (HDMI Tx -> Monitor)
Check item(59). Check the HPD and RXSENSE register value of
the HDMI Tx device. :
Send the following command from Termite.exe.
Send the command "i 0000 0040 0001".
Move to the branch destination according to the value returned.
"30"
(Detection of HPD is OK / Detection of RXSENSE is OK )
"10"
(Detection of HPD is OK / Detection of RXSENSE is not OK )
"20"
(Detection of HPD is not OK / Detection of RXSENSE is OK )
"00"
(Detection of HPD is not OK / Detection of RXSENSE is not OK )
TMDS
Time scale : 1s/div
120
Example
Go to check item (60)
Go to check item (63)
Go to check item (64)
Go to check item (65).