Denon AVR-X6400H Service Manual

Check item(29). Check the SPI communication line :
Check the CPU.
Is the "SPI" waveform of the TP near the DSP [U101] correct (like
the one shown in the diagram) when the power is turned on?
U101
3 pin CLK
4 pin MOSI
6 pin CS
5 pin MISO
Check item(30). Check the SPI communication line :
Check DSP [U101], CPU[U6201] patterns as well as soldering.
If there is no problem, go to the next step.
Check the SPI communication line. (DSP1)
DSP [U101] is faulty.
Replace with a new device.
YES
*The diagram shows an example.
(Signal patterns vary depending on the tim-
ing.)
Points for checking waveforms
- Crest value (3.3V normally)
- Signal change
- CLOCK frequency (about 1.2MHz)
Voltage scale : 2.0V/div
Time scale : 2us/div
NOYES
Recheck from check item (1).
If it does not work, replace the PCB.
110
Caution in
servicing
Electrical Mechanical Repair Information Updating

Denon AVR-X6400H Specifications

General

Receiver type	Surround
Frequency range	10 - 100000 Hz
Pre-out channels	11.2
Input sensitivity	200 mV
Pre-out connectivity	Yes
Audio output channels	11.2 channels
Signal-to-Noise Ratio (SNR)	100 dB
Power output per channel (1KHz@6 Ohm)	205 W
Power output per channel (20-20KHz@8 Ohm)	140 W
Display	-
HDCP version	2.2
Apple docking	No
Product color	Silver
Audio decoders	DTS:X, Dolby Atmos
Audio formats supported	ALAC, DSD, FLAC, WAV
RS-232 ports	1
Connectivity technology	Wireless
AM band range	522 - 1611 kHz
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM
Internet radio services supported	Deezer, Napster, Spotify, Tidal, TuneIn
HDMI in	8
Composite video in	4
Component video (YPbPr/YCbCr) in	2
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	750 W
Number of HDMI outputs	3

Weight and Dimensions

Depth	393 mm
Width	434 mm
Height	167 mm
Weight	14500 g