Denon AVR-X2500H 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.
GUI [U1026] is faulty.
Replace with a new device.
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 (3.3V 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.
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
102

Denon AVR-X2500H Specifications

General

HDMI in	8
Composite video in	2
Ethernet LAN (RJ-45) ports	1
AirPlay	No
Display	-
Sample rate	196 kHz
HDCP version	2.2
Product color	Black
Audio decoders	DSD, DTS-HD, DTS:X, Dolby Atmos, Dolby Surround, Dolby TrueHD
Volume control	Rotary
RS-232 interface	Yes
Connectivity technology	Wired & Wireless
Receiver type	Surround
Frequency range	20 - 20000 Hz
Output impedance	8 Ω
Input sensitivity	200 mV
Audio output channels	7.1 channels
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.08 %
Power output per channel (1KHz@6 Ohm)	185 W
Power output per channel (20-20KHz@8 Ohm)	95 W
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	500 W
Audio formats supported	AAC, ALAC, DSD, FLAC, MP3, WAV, WMA
AM band range	520 - 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, TuneIn, iHeartRadio
Supported graphics resolutions	3840 x 2160

Weight and Dimensions

Depth	340.3 mm
Width	434.3 mm
Height	167.6 mm
Weight	9389 g