Denon AVR-X3300W Service Manual page 90

When the results of check item (14) are "22 or
(Detection of DDC is OK.)
Checking the TMDS status register (HDMI Switcher1)
Check item(17). Checking register of the TMDS CLK detection status
register :
Send the following command from Termite.exe.
Send the command "i 002E 00FF 0001".
When the following value is returned, go to Yes.
HDMI IN5 "C4", HDMI IN6 "A2", HDMI IN7 "91"
When the following value is returned, go to No.
HDMI IN5 "C0", HDMI IN6 "A0", HDMI IN7 "90"
YES
Checking the HPD/RXSENSE status register. (HDMI ZONE2 OUT)
Check item(19). Check the HPD and RXSENSE register value of
the HDMI TX device.
Send the following command from Termite.exe.
Send the command "i 0028 0040 0001".
Check the value.
Move to the branch destination according to the value returned.
"33 or 23 or 13 or 03"
(Detection of HPD is OK / Detection of RXSENSE is OK )
"31 or 21 or 11 or 01"
(Detection of HPD is OK / Detection of RXSENSE is not OK )
"32 or 22 or 12 or 02"
(Detection of HPD is not OK / Detection of RXSENSE is OK )
"30 or 20 or 10 or 00"
(Detection of HPD is not OK / Detection of RXSENSE is not OK )
11"
Example
i 002E 00FF 0001
NO
Example
i 0028 0040 0001
33
If it is normal, "33" is returned.
The correct resistor value cannot be
checked if the AVR and TV are not
connected by HDMI.
Go to check item (20)
Go to check item (23)
Go to check item (24)
Go to check item (25)
3.3V
Example of waveform in check ① Example of waveform in check ②
Check item (18). Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
HDMI IN5
55/56/58/59/61/62/64/65 pin
HDMI IN6
U1003
80/81/83/84/86/87/89/90 pin
HDMI IN7
93/94/96/97/99/100/102/103 pin
YES
HDMI Switcher1 (U1003) is faulty.
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the PCB.
90
TMDS Signal TMDS
NO
Check for a short circuit in the pattern of the
TMDS line of the HDMI Switcher1 (U1003) from
the HDMI input terminal.
If there is no problem, the HDMI Switcher1
(U1003) is faulty.
Replace with a new device.