Gui Ic [Adv8003] Failure Detection Procedure - Denon AVR-X2400H Service Manual

3-13. GUI IC [ADV8003] failure detection procedure

Checking the TMDS status register (GUI -> HDMI Tx)
Check item(72). Check the TMDS CLK detection status of the regis-
ter.
Send the following command from Termite.exe.
Send the command "i 0006 00FF 0001".
When the following value is returned, go to Yes.
"74"
When the following value is returned, go to No.
"70"
NO
Check item (73). Checking the TMDS input. :
TMDS waveform at the following points.
U1039
55/56/58/59/61/62/64/65 pin
YES
HDMI Tx [U1039] is faulty.
Replace with a new device.
Recheck from check item (4).
If it does not work, replace the PCB.
Example
YES
HDMI Tx [U1039] is faulty.
Replace with a new device.
Recheck from check item (4).
If it does not work, replace the PCB.
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
The GUI [U1026] is faulty.
Replace with a new device.
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