Denon AVR-S740H Service Manual

3. Starting detecting the point of failure
Check item(1).
Check the power supply status and communication status with the CPU of each device.
Start in HDMI Diagnostics mode and follow the procedures below.
(1) Start in HDMI Diagnostics mode
While the power is on, hold down buttons "
TUNER PRESET CH -
" and "
ZONE2 SOURCE
" for at least 3
seconds.
HDMI DIAGNOSTICS
"HDMI DIAGNOSTICS" is displayed.
When the mode has switched, start Hardware check.
Hardwarecheck...
(2-1) Display when an Error Code is displayed.
Err: H1-XX
Alternating display.
Contact support
Check the Error Code table items.
Error Code table
Error Code Check item No. Description
H1-01 Check item (5) Communication Error with HDMI RX/Tx [IC721 : MN864788]
H1-02 Check item (10) Communication Error with HDMI SW [IC701 : MN864787]
H1-07 Check item (12) Communication Error with OSD [IC731 : ADV7623]
H1-08 Check item (19) Communication Error with DSP [IC781 : CS49844A]
H1-12 Check item (24) Communication Error with DIR [IC761 : PCM9211]
H1-15 Check item (17) Communication Error with OSD ROM [IC733 : MX25L3206EMI/MX25L6406EMI]
(2-2) Display when an Error is not detected.
1 Auto Test
Cancel the mode, and proceed to check item (2).
Canceling the selected mode
Press the power button to exit off the power.
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
84

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