Denon AVR-X2400H Service Manual

Check item(24). Check the I2C communication line :
Check the CPU.
Is the "I2C" waveform of the TP near the CPU [U1018] correct (like
the one shown in the diagram) when the power is turned on?
U1018
AVSDA AVSCL
Check item(25). Check the I2C communication line :
Check GUI [U1026], HDMI SW [U1103] and CPU [U1018] patterns as well as soldering.
If there is no problem, go to the next step.
Check the CPU.
Remove the damping resistor [R1493/R1494]
of [U1018].
Is the "I2C" waveform correct?
The CPU [U1018] is faulty.
Replace with a new device.
Check the I2C communication line.
The GUI [U1026] is faulty.
Replace with a new device.
The GUI [U1026] is faulty.
Replace with a new device.
YES
*The diagram shows an example.
(Signal patterns vary depending on the
timing.)
Points for checking waveforms
- Crest value (3.3 V normally)
- Signal change
- SCL frequency (400 kHz normally )
Voltage scale：1.0V/div
Time scale：10us/div
NO
YES
YES
NO
Recheck from check item (1).
If it does not work, replace the PCB.
97
Caution in
servicing
Electrical Mechanical Repair Information Updating

Denon AVR-X2400H Specifications

General

Receiver type	Surround
Frequency range	20 - 20000 Hz
Pre-out channels	2 SW
Input sensitivity	200 mV
Pre-out connectivity	Yes
Audio output channels	7.2 channels
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.08 %
Power output per channel (1KHz@6 Ohm)	150 W
Power output per channel (20-20KHz@8 Ohm)	95 W
Display	VFL
HDCP version	2.2
Apple docking	No
Product color	Black
Audio decoders	DTS-HD Master Audio, DTS:X, Dolby Atmos, Dolby Surround
Volume control	Rotary
Center speaker impedance	16 Ω
Supported video modes	720i, 720p, 960p, 1080i, 1080p, 2160p
Supported graphics resolutions	3840 x 2160
HDMI in	8
Audio (L/R) in	4
Digital audio coaxial in	0
Ethernet LAN (RJ-45) ports	1
Multichannel audio input type	RCA
Component video (YPbPr/YCbCr) in	2
AM band range	522 - 1611 kHz
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM
Internet radio services supported	Deezer, Napster, Pandora, SIRIUS Internet Radio, Spotify, Tidal, iHeartRadio
Audio formats supported	ALAC, DSD, FLAC, MP3, WAV
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.1 W
Power consumption (typical)	500 W
Headphone connectivity	3.5 mm
Connectivity technology	Wired & Wireless
Speakers connectivity type	3.5mm
Certification	CE, EAC

Weight and Dimensions

Depth	339 mm
Width	434 mm
Height	167 mm
Weight	9400 g