Denon AVR-X8500H Service Manual

Check the power supply voltage. (HDMI Tx)
Check item(6). Check the power supply voltage. :
Does the power supply voltage of the HDMI Tx [U3401] indicate the correct voltage (1.1V, 3.3V)?
The test points are as follows.
HDMI Tx
U3401
1.1V
3.3V
162pin
R3438
Check item(7). Check the power supply voltage. :
Check the power components [U3605/U3601] and the pattern on
the substrate.
If there is no problem, remove the HDMI Tx [U3401] from the sub-
strate and measure the voltage at the test point of check item (6).
Is the voltage correct (1.1V or 3.3V)?
Replace with a new device.
The power supply circuit is
faulty.
Replace the PCB.
Recheck from check item (1).
If it does not work, replace the PCB.
Checking device. [U3401 : MN864787]
3-1. Error Code H1-01 failure detection procedure
NOYES
NOYES
Go to next page.
YES
Checking the reset waveform. (HDMI Tx)
Check item(8). Checking the reset waveform :
Check the waveform.
Is the "TP" waveform of the TP near the HDMI Tx [U3401] correct
(like the one shown in the diagram) when the power is turned
on?
HDMI Tx
U3401
1.1V
3.3V
RESET
Check the reset circuit between
CPU [U6201] and HDMI Tx
[U3401].
If there is no problem, the HDMI
Tx [U3401] is faulty.
Replace with a new device.
Recheck from check item (1).
If it does not work, replace the
PCB.
NO
Examples of conrmation waveform
Voltage scale : 1.0V/div
Time scale : 20ms/div
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
99

Denon AVR-X8500H Specifications

General

Channels	13.2
Power Output	150W per channel (8 ohms, 20Hz-20kHz, 0.05% THD)
Frequency Response	10Hz-100kHz (+1, -3dB)
HDMI Inputs	8 (1 front)
HDMI Outputs	3
Dolby Atmos	Yes
DTS:X	Yes
IMAX Enhanced	Yes
HEOS Multi-room	Yes
Wi-Fi	Yes
Bluetooth	Yes
Voice Control	Amazon Alexa, Google Assistant, Apple Siri
Impedance	4-16 ohms
HDR Compatibility	HDR10, Dolby Vision, HLG
Audio Return Channel (ARC)	Yes
Digital Audio Inputs	2 Optical, 2 Coaxial
Analog Audio Inputs	6
Phono Input	Yes
Speaker Connectors	Binding Posts
Supported Audio Formats	MP3, WMA, AAC, FLAC, ALAC, WAV, DSD
Surround Sound Support	Dolby Atmos, DTS:X, Auro-3D
Tuner	AM/FM
Input Sensitivity/Impedance	200 mV / 47 kohms
HDCP Support	2.2
Other Connections	USB, Ethernet, RS-232C
Wireless Connectivity	Wi-Fi, Bluetooth
Signal-to-Noise Ratio	102 dB
DAC	AKM AK4490EQ (32-bit/192kHz)
Total Harmonic Distortion	0.05% (20Hz - 20kHz, 150W)