Denon AVR-S730H Service Manual

When the results of check item (47) are "22"
(Detection of DDC is OK)
Check item(50). Check the TMDS CLK detection status of the regis-
ter.
Send the following command from Termite.exe.
Send the command "i 002E 00FF 0001".
When the following value is returned, go to Yes.
"88"
When the following value is returned, go to No.
"80"
Check item (51). Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
HDMI SW[IC701]
70/71/73/74/76/77/79/80pin
IC720
Checking the TMDS status register
HDMI SW [IC701] is faulty.
Replace with a new device.
Recheck from check item (2).
If it does not work, replace the PCB.
Check for a short circuit in the TMDS line and the Front HDMI FFC.
If there is no problem, the Front HDMI Buffer [IC811] is faulty.
Replace with a new device.
HDMI SW [IC701] is faulty.
Replace with a new device.
Example
i 002E 00FF 0001
YES
YES NO
TMDS Signal
3.3V
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
98
Caution in
servicing
Electrical Mechanical Repair Information Updating

Denon AVR-S730H Specifications

General

Channels	7.2
Power Output (6 ohm, 1 kHz, 0.7% 2ch Drive)	110W
Power Output (6 ohm, 1 kHz, 10% 1ch Drive)	165W
HDMI Inputs	6
HDMI Outputs	1
Dolby Atmos	Yes
DTS:X	Yes
DTS Virtual:X	Yes
Wi-Fi	Yes
Bluetooth	Yes
HEOS Multi-room	Yes
4K Ultra HD Pass-through	Yes
HDR Support	Yes (HDR10, Dolby Vision, HLG)
Auto Speaker Calibration	Audyssey MultEQ
AirPlay	Yes (AirPlay 2)
Internet Radio	Yes
Phono Input	No
Ethernet Port	Yes
Power Output per Channel	75W (8 ohm, 20Hz-20kHz, 0.08% 2ch Drive)
USB Input	1 (Front)