Denon HEOS Amp Service Manual

ABOUT THIS MANUAL
.............................................................3
What you can do with this manual ............................................3
Using Adobe Reader (Windows version) ..................................4
SAFETY PRECAUTIONS
..........................................................6
NOTE FOR SCHEMATIC DIAGRAM
.........................................7
NOTE FOR PARTS LIST
...........................................................7
TECHNICAL SPECIFICATIONS
................................................9
DIMENSION
...............................................................................9
DISASSEMBLY
........................................................................10
1. SIDE COVER AND SIDE KEY PCB ...................................12
2. TOP COVER / BOTTOM COVER ......................................13
3. CORE MODULE PCB ASSY .............................................14
4. DIGITAL PCB .....................................................................15
5. SUB SMPS PCB ................................................................16
6. MAIN (VOLUME-SMPS) PCB ...........................................17
7. FRONT PANEL ASSY ........................................................17
Procedure after Replacing the Microprocessor, etc.
..........18
Firmware Update Procedure..................................................18
1. MAIN PCB Update Procedure ............................................18
2. Updating by USB ................................................................20
3. Service region settings update procedures ........................ 21
4. Service Release Type settings update procedures ............22
5. Firmware burning procedure after Core Module
replacement ow ....................................................................23
6. How to check the version , Release Type, Locale .............24
TROUBLE SHOOTING
............................................................25
1. POWER ..............................................................................25
2. AUDIO ................................................................................27
AUDIO CHECK PATH .............................................................29
MEASURING METHOD AND WAVEFORMS .........................33
BLOCK DIAGRAM
...................................................................36
POWER DIAGRAM
..................................................................37
WIRING DIAGRAM
..................................................................38
PRINTED Circuit BOARDS
.....................................................39
SCHEMATIC DIAGRAMS
.......................................................42
MAIN ......................................................................................42
DSP DIR USB .........................................................................43
DAMP ......................................................................................44
SMPS ......................................................................................45
FRONT ....................................................................................46
MAIN BT NFC KEY .................................................................47
TOUCH PAD ...........................................................................48
EXPLODED VIEW
...................................................................50
PACKING VIEW
.......................................................................52
SEMICONDUCTORS
...............................................................53
1. IC's .....................................................................................53
CONTENTS
2

Denon HEOS Amp Specifications

General

Amplifier class	D
Frequency range	20 - 20000 Hz
Input sensitivity	150 mV
Audio output channels	2.0 channels
Peak power per channel	100 W
Signal-to-Noise Ratio (SNR)	83 dB
Total Harmonic Distortion (THD)	0.1 %
AC (power) in	Yes
Headphone connectivity	3.5 mm
USB 2.0 ports quantity	1
Speakers connectivity type	-
Purpose	Home
Product color	Black, Silver
Cables included	AC, Audio (3.5mm), LAN (RJ-45)
Connectivity technology	Wired & Wireless
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz

Weight and Dimensions

Depth	214 mm
Width	221 mm
Height	93 mm
Weight	2800 g