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Denon AVR-X8500H Service Manual

Denon AVR-X8500H
209 pages
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Check item(26). Check the power supply voltage.
:
Does the power supply voltage of the DSP [U102]
indicate the appropriate voltage (1.1V, 1.5V or
3.3V)?
The test points are as follows.
U102
C123: 1.5V
L1907: 1.1V
R207: 3.3V
1.1V
1.5V
3.3V
Check item(27). Check the power supply voltage.
:
Check power supply parts [U1901, U1902, U1905]
on the board, the surrounding layout and signal
paths.
If there is no problem, remove the DSP [U102]
from the substrate and measure the voltage at
the test point of check item (26).
Is the voltage correct (1.1V, 1.5V or 3.3V)?
Check the power supply voltage. (DSP1)
Checking device. [U102 : ADSP21573]
Go to next page.
3-8. Error Code H1-08 failure detection procedure
NO
DSP [U102] is faulty.
Replace with a new device.
Recheck from check item (1).
If it does not work, replace the PCB.
The power supply circuit is faulty.
Replace the PCB.
NOYES
YES
Check item(28). Checking the reset :
Check the CPU.
Is the waveform of the RESET near the DSP [U102] correct (like the
one shown in the diagram) when the power is turned on?
U102
R122: RESET
Checking the reset waveform. (DSP1)
Recheck from check item (1).
If it does not work, replace the PCB.
Check the reset circuit between CPU [U6201] and DSP [U102].
If there is no problem, the DSP [U102] is faulty.
Replace with a new device.
NOYES
Examples of conrmation waveform
Voltage scale : 1.0V/div
Time scale : 20ms/div
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
107

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Denon AVR-X8500H Specifications

General IconGeneral
Channels13.2
Power Output150W per channel (8 ohms, 20Hz-20kHz, 0.05% THD)
Frequency Response10Hz-100kHz (+1, -3dB)
HDMI Inputs8 (1 front)
HDMI Outputs3
Dolby AtmosYes
DTS:XYes
IMAX EnhancedYes
HEOS Multi-roomYes
Wi-FiYes
BluetoothYes
Voice ControlAmazon Alexa, Google Assistant, Apple Siri
Impedance4-16 ohms
HDR CompatibilityHDR10, Dolby Vision, HLG
Audio Return Channel (ARC)Yes
Digital Audio Inputs2 Optical, 2 Coaxial
Analog Audio Inputs6
Phono InputYes
Speaker ConnectorsBinding Posts
Supported Audio FormatsMP3, WMA, AAC, FLAC, ALAC, WAV, DSD
Surround Sound SupportDolby Atmos, DTS:X, Auro-3D
TunerAM/FM
Input Sensitivity/Impedance200 mV / 47 kohms
HDCP Support2.2
Other ConnectionsUSB, Ethernet, RS-232C
Wireless ConnectivityWi-Fi, Bluetooth
Signal-to-Noise Ratio102 dB
DACAKM AK4490EQ (32-bit/192kHz)
Total Harmonic Distortion0.05% (20Hz - 20kHz, 150W)

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