Hdmi Rx/Tx [Mn864788] & Osd[Adv7623] Failure Detection Procedure; Checking The Tmds Status Register (Rx/Tx -> Osd) - Denon AVR-S730H Service Manual

3-11. HDMI Rx/Tx [MN864788] & OSD[ADV7623] failure detection procedure
HDMI IN1
※ In order to check, connect the player to the HDMI terminal and configure the TV as AVR source.
Check sound output by turning on the player and the TV.
Checking the TMDS status register (Rx/Tx -> OSD)
Check item(61). Check the TMDS CLK detection status of the regis-
ter.
Send the following command from Termite.exe.
Send the command "i 00B2 006A 0001".
When the following value is returned, go to Yes.
"11"
When the following value is returned, go to No.
"00"
YES
HDMI Rx/Tx [IC721] is faulty.
Replace with a new device.
Recheck from check item (4).
If it does not work, replace the PCB.
HDMI OUT
Example
i 00B2 006A 0001
Check item (62). Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
23/24/26/27/29/30/32/33 pin
IC731
YES
OSD[IC731] is faulty.
Replace with a new device.
104
3.3V
TMDS Signal
Example of waveform in check ①
Voltage scale：1.0V/div
Time scale：20ms/div
TMDS
Example of waveform in check ②
Voltage scale：1.0V/div
Time scale：1s/div
NO