Denon AVR-X6400H Service Manual

Checking device. [U401 : ADSP21487]
3-11. Error Code H1-11 failure detection procedure
Check item(39). Checking the reset :
Check the CPU.
Is the waveform of the TP near the DSP [U401] correct (like the one
shown in the diagram) when the power is turned on?
U401
RESET
Checking the reset waveform. (DSP4)
Recheck from check item (1).
If it does not work, replace the PCB.
Check the reset circuit between CPU [U6201] and DSP [U401].
If there is no problem, the DSP [U401] is faulty.
Replace with a new device.
NOYES
Examples of conrmation waveform
Voltage scale : 1.0V/div
Time scale : 20ms/div
Check item(40). Check the SPI communication line :
Check the CPU.
Is the "SPI" waveform of the TP near the DSP [U401] correct (like
the one shown in the diagram) when the power is turned on?
U401
CS
Check item(41). Check the SPI communication line :
Check DSP [U401], CPU [U6201] patterns as well as soldering.
If there is no problem, go to the next step.
Check the SPI communication line. (DSP4)
DSP [U401] is faulty.
Replace with a new device.
*The diagram shows an example.
(Signal patterns vary depending on the tim-
ing.)
Points for checking waveforms
- Crest value (3.3V normally)
- Signal change
Voltage scale : 2.0V/div
Time scale : 2us/div
NOYES
Recheck from check item (1).
If it does not work, replace the PCB.
114
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