Denon AVR-X4400H Service Manual

Also see for AVR-X4400H: Manual Owner's manual

Check item(95). Does a video signal come from HDMI OUT to TV correctly? :Turn Video Conversion "ON" on the setup menu.(SETUP MENU-> Video-> Output Settings-> Video Conversion = On)When the "SETUP" button on a remote control is pressed, is "MENU" displayed on TV which is connect-ed to the HDMI output terminal on the AVR?HDMI OUTNOYESGo to check item (96)Go to check item (99)3-18. GUI and PLD failure detection procedureWhen the results of check item (95) are "NO"(When the menu display is not OK)Check item(96). Check the format of the resistor video signal :Send the following command from Termite.exe.Send the command "i 0020 0070 0001".Is the return value "22/21/20/1F/15/14/13/11/10/06/05/04/02" ?Check the Video signal line. (GUI -> HDMI Tx)Examplei 0020 0070 000122NOCheck item(97). Check the PLD video signal line from the GUI :Check the video signal waveform at the following test point.Is the waveform like the sample?IC401R4027Check item(98). Check the HDMI Tx video signal line from the PLD :Check the video signal waveform at the following test point.Is the waveform like the sample?IC421PO_DENOHDMI Tx [IC431] is faulty.Replace with a new device.Check the peripheral pattern between the GUI [IC401] and PLD [IC421].If there is no problem, the GUI [IC401] is faulty.Replace with a new device.Check the peripheral pattern between the PLD[IC421] and HDMI Tx [IC431].If there is no problem, the PLD [IC421] is faulty.Replace with a new device.Check the Video signal line. (GUI -> PLD)Check the Video signal line. (PLD -> HDMI Tx)HDMI Tx [IC431] is faulty.Replace with a new device.Recheck from check item (5).If it does not work, replace the PCB.Recheck from check item (5).If it does not work, replace the PCB.NOYESYESRecheck from check item (5).If it does not work, replace the PCB.3.3VExample of waveform in check ①Voltage scale : 1.0V/divTime scale : 1ms/div3.3VExample of waveform in check ②Voltage scale : 1.0V/divTime scale : 50ns/div3.3VExample of waveform in check ①Voltage scale : 1.0V/divTime scale : 1ms/div3.3VExample of waveform in check ②Voltage scale : 1.0V/divTime scale : 1us/div144Caution inservicing Electrical Mechanical Repair Information Updating