Denon AVR-X550BT Service Manual

4. AUDIO
4.1. AUDIO CHECK
No audio output
Check the ANALOG AUDIO BLOCK
Check the DIGITAL AUDIO BLOCK
Check the ADC BLOCK
Check the HDMI BLOCK
Check for other causes
Check the HDMI BLOCKCheck the DIGITAL AUDIO BLOCK
CHECK 1 INPUT SURROUND MODE SOURCE
Audio output OK? ANALOG 2CH DIRECT ANALOG
CHECK 2 INPUT SURROUND MODE SOURCE
Audio output OK? COAX or OPT -
Legacy
(PCM or DolbyDigital or dts…)
CHECK 4 INPUT SURROUND MODE SOURCE
Audio output OK? HDMI -
Legacy
(PCM2ch or DolbyDigital or dts…)
CHECK 6 Setting SOURCE
HDMI OUT → other AVR HDMI IN HDMI
HD AUDIO
(PCM MULTI or DolbyTrueHD or dts HD MA)
CHECK 5 INPUT SURROUND MODE SOURCE
Audio output OK? HDMI -
HD MA audio
(DolbyTrueHD or dts HD MA)
CHECK 3 INPUT SURROUND MODE SOURCE
Audio output OK? ANALOG 2CH MULTICH STEREO ANALOG
NO
NO
NO
NO
YES
YES
YES
YES
YES
NOYES
NOYES (DIGITAL AUDIO BLOCK is OK)
HDMI Tx
HDMI
TRANSCEIVER
DIR + CODEC
INPUT
SELECTOR
+
VOLUME
①
②
③
④
⑤
HDMI PCB
MAIN PCB
HDMI IN
HDMI OUT
OPT
IN
COAX
IN
DSP
Analog IN
Decode DAC
BT PCB
DIGITAL PCB
in1-2
in3-5
TMDS
I2S
I2S
I2S
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
63

Denon AVR-X550BT Specifications

General

Optical disc player type	-
Built-in HDD	No
Multichannel decoding	Yes
Audio decoders	Dolby Atmos, Dolby Surround, Dolby TrueHD
RMS rated power	130 W
Audio output channels	5.1 channels
Audio formats supported	AAC, FLAC, MP3, WMA
AM band range	522 - 1611 kHz
FM band range	58.5 - 1.8 MHz
Product color	Black
HDMI in	5
Composite video in	2
SCART ports quantity	0
Number of HDMI outputs	1
AC input voltage	230 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.1 W
Package weight	Weight of the packaged product in gram.

Weight and Dimensions

Main unit weight	7257 g
Main unit dimensions (WxDxH)	431 x 304 x 127 mm