Denon AVR-X4300H Service Manual

YES
YES
YES
YES
Checking the reset waveform. (HDMI Switcher1)
Check the I2C communication line. (HDMI Switcher1)
Check item(10). Checking the reset waveform :
Check the waveform.
Is the "TP17" waveform of the TP near the HDMI Switcher1 (IC391)
correct (like the one shown in the diagram) when the power is
turned on?
IC391
IC391
TP17
Check item(11). Check the I2C communication line :
Check the CPU.
Is the "TP53/54" waveform of the TP near the HDMI Switcher1
(IC391) correct (like the one shown in the diagram) when the
power is turned on?
IC391
IC391
TP53
TP54
Check the reset circuit between
CPU (IC151) and HDMI Switcher1
(IC391).
If there is no problem, the HDMI
Switcher1 (IC391) is faulty.
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the
PCB.
HDMI Switcher1
(IC391) is faulty.
Replace with a new
device.
HDMI Switcher2
(IC381) is faulty.
Replace with a new
device.
HDMI Tx (IC431) is
faulty.
Replace with a new
device.
CPU (IC151) is faulty.
Replace with a new
device.
HDMI Switcher1 (IC391) is faulty.
Replace with a new device.
Recheck from check item (3).
If it does not work, replace the PCB.
Check item(12). Check the I2C com-
munication line :
Check HDMI Switcher1, 2 (IC391 or
IC381), HDMI Tx (IC431) and CPU
(IC151) patterns as well as soldering.
If there is no problem, go to the next
step.
Check the HDMI Switcher2
Remove the damping resistor
(R3812/R3814) of (IC381).
Is the "I2C" waveform correct?
Recheck from check item (3).
If it does not work, replace the PCB.
Check the HDMI Tx.
Remove the damping resistor
(R4326/R4328) of (IC431).
Is the "I2C" waveform correct?
Check the HDMI Switcher1
Remove the damping resistor
(R3914/R3916) of (IC391).
Is the "I2C" waveform correct?
NO
NO
NO NO
YES YES YES NO
Examples of conrmation waveform
*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 )
98
Caution in
servicing
Electrical Mechanical Repair Information Updating

Denon AVR-X4300H Specifications

General

Display	-
Product color	Black
Audio decoders	DTS Neo:X, DTS-HD Master Audio, Dolby Pro Logic IIz, Dolby Surround, Dolby TrueHD
Audio amplifier	Yes
Connector contacts plating	Gold
Apple docking compatibility	Not supported
Receiver type	Surround
Audio output channels	11.2 channels
Power output per channel (1KHz@6 Ohm)	235 W
Power output per channel (20-20KHz@8 Ohm)	125 W
Audio formats supported	AAC, ALAC, DSD, FLAC, MP3, WAV, WMA
AM band range	520 - 1710 kHz
FM band range	87.5 - 107.9 MHz
Supported radio bands	AM, FM
Internet radio services supported	Napster, Pandora, SIRIUS Internet Radio, Spotify, TuneIn
HDMI in	8
Remote (IR) input	1
Composite video in	4
Digital audio coaxial in	2
Headphone connectivity	3.5 mm
Number of HDMI outputs	3
Multichannel audio output type	RCA
Supported video modes	1080p, 2160p
Connectivity technology	Wired & Wireless
Speakers connectivity type	3.5mm
Power consumption (standby)	0.1 W
Power consumption (typical)	710 W
Card reader integrated	No

Weight and Dimensions

Depth	339 mm
Width	434 mm
Height	236 mm
Weight	13500 g