Denon AVR-S740H Service Manual

4. AUDIO
4.1. AUDIO CHECK
No audio output
Check the ANALOG AUDIO BLOCK
Check the DIGITAL AUDIO BLOCK
Check the ADC BLOCK
Check the HDMI BLOCK
Check for other causes
Check the HDMI BLOCK
See "Service Path Check Mode"
Check the DIGITAL AUDIO BLOCK
CHECK 1 INPUT SURROUND MODE SOURCE
Audio output OK? ANALOG 2CH DIRECT ANALOG
CHECK 2 INPUT SURROUND MODE SOURCE
Audio output OK? COAX or OPT -
Legacy
(PCM or DolbyDigital or dts…)
CHECK 4 INPUT SURROUND MODE SOURCE
Audio output OK? HDMI -
Legacy
(PCM2ch or DolbyDigital or dts…)
CHECK 6 INPUT Connect
AVR's (connected in HDMI) audio out-
put OK?
HDMI This unit's HDMI OUT → Other AVR's HDMI IN
Setting SURROUND MODE SOURCE
CEC STANDBY - HBR audio(DolbyTrueHD or dtsHD MA)
CHECK 5 INPUT SURROUND MODE SOURCE
Audio output OK? HDMI -
HBR audio
(DolbyTrueHD or dtsHD MA)
CHECK 3 INPUT SURROUND MODE SOURCE
Audio output OK? ANALOG 2CH MULTICH STEREO ANALOG
NO
NO
NO
NO
YES
YES
YES
YES
YES
NOYES
NOYES (DIGITAL AUDIO BLOCK is OK)
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
75

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