Denon AVR-S740H Service Manual

Check item(52). Check the TMDS CLK detection status of the register
:
Send the following command from Termite.exe.
Send the command "i 0006 00FF 0001".
When the following value is returned, go to Yes.
"C8"
When the following value is returned, go to No.
"other"
Checking the TMDS status register (OSD -> HDMI Rx/Tx)
Example
i 0006 00FF 0001
Check item(53). 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
IC721
HDMI Rx/Tx [IC721] is faulty.
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the PCB.
OSD [IC731] is faulty.
Replace with a new device.
Check the connection between the HDMI OUT terminal and the TV.
Go to check item (54)
YESYES 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
3-10. OSD [ADV7623] failure detection procedure
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
105

Denon AVR-S740H Specifications

General

Channels	7.2
Power Output per Channel	75 W (8 Ohms, 20 Hz - 20 kHz, 0.08% THD)
HDMI Inputs	6
HDMI Outputs	1
Dolby Atmos	Yes
DTS:X	Yes
Bluetooth	Yes
Wi-Fi	Yes
HEOS Multi-room	Yes
4K Ultra HD Pass-through	Yes
Power Output per Channel (6 Ohms)	110 W (6 Ohms, 1 kHz, 0.7% THD)
4K/Ultra HD Upscaling	Yes
Phono Input	Yes
Dolby Support	Dolby Atmos, Dolby TrueHD, Dolby Surround
Auto Calibration	Audyssey MultEQ
Input Sensitivity/Impedance	200 mV / 47 kOhms
Signal-to-Noise Ratio	98 dB (IHF-A weighted, Direct mode)
Ethernet	Yes
USB Port	Yes (front)
AM/FM Tuner	Yes
Supported Audio Formats	MP3, WMA, AAC, FLAC, ALAC, WAV, DSD
HDR Support	HDR10, HLG, Dolby Vision
Wireless Audio	AirPlay 2
DTS Support	DTS:X, DTS-HD Master Audio
Zone Audio	Zone 2
Frequency Response	10 Hz - 100 kHz (+1, -3 dB, Direct Mode)
Total Harmonic Distortion	0.08% (20 Hz - 20 kHz)
Built-in DAC	192 kHz / 24-bit