Denon avr-s720w Service Manual

When the results of check item (32) are "22"
(Detection of DDC is OK)
Check item(35). Check the TMDS CLK detection status of the regis-
ter. :
Send the following command from Termite.exe.
Send the transmission command "i 002E 00FF 0001".
The return value is "88".
Go to Yes.
The return value is "80".
Go to No.
Check item (36). Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
HDMI SW(IC701)
42/43/45/46/48/49/51/52pin
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
TMDS
Example of waveform in check ②
NO
87
Caution in
servicing
Electrical Mechanical Repair Information Updating

Denon avr-s720w Specifications

General

Channels	7.2
HDMI Inputs	6
HDMI Outputs	1
Dolby Atmos	Yes
DTS:X	Yes
Wi-Fi	Yes
Bluetooth	Yes
4K Ultra HD Pass-Through	Yes
HDR Support	Yes
3D Pass-Through	Yes
HDMI Version	2.0a
HDCP Version	2.2
AirPlay	Yes
Built-in HEOS	No
Phono Input	No
Ethernet Port	Yes
Dimensions (W x H x D)	17.1 x 6.6 x 13.3 inches
Power Output per Channel	75W (8 ohms, 20 Hz - 20 kHz, 0.08% THD)
USB Port	Yes