Denon HEOS 7 HS2 User manual

MODEL JP E3 E2 EK EA E1 E1C E1K
HEOS 7 HS2
P P P
Wireless Music System
S0249V04DM/DG1804
Ver. 4
• Please use this service manual with referring to the operating instructions without fail.
• Some illustrations using in this service manual are slightly different from the actual set.
• For purposes of improvement, specications and design are subject to change without notice.
Please refer to the
MODIFICATION NOTICE.
e
SERVICE MANUAL
e
D&M Holdings Inc.
Copyright 2017-2018 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.

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
Instructions for handling semi-conductors and optical unit ...7
1. Ground for Human Body......................................................7
2. Ground for Workbench ........................................................7
TECHNICAL SPECIFICATIONS.....................................................9
DIMENSION ..............................................................................10
DISASSEMBLY ..........................................................................11
1. HOUSING FRONT................................................................12
2. AMP ASSY...........................................................................13
Procedure after Replacing the Microprocessor, etc...............14
FIRMWARE UPDATE PROCEDURE............................................15
1. MAIN PCB Update Procedure.............................................15
2. Updating via USB ...............................................................17
3. Service region settings update procedures .......................19
4. Service Release Type settings update procedures.............20
5. Firmware burning procedure
after Core Module replacement ow.................................21
6. How to check the version , Release Type, Locale ...............22
TROUBLE SHOOTING................................................................23
1. Power not turn on..............................................................23
2. No sound is output speaker...............................................23
3. No sound is AUX Function .................................................24
4. Cannot connect to network For a wired LAN....................25
5. Cannot connect to network For a wireless LAN.................26
6. USB device is not recognized.............................................26
BLOCK DIAGRAM .....................................................................27
WIRING DIAGRAM....................................................................28
PRINTED CIRCUIT BOARDS ......................................................29
SCHEMATIC DIAGRAMS (01/11)...............................................30
SCH01-AIOS Lego....................................................................30
SCH02-AUDIO PROCESS..........................................................31
SCH03-CTIA_QMTP .................................................................32
SCH04-MCU.............................................................................33
SCH05-MISC ............................................................................34
SCH06-POWER ........................................................................35
SCH07-Tweeter AMP...............................................................36
SCH08-USB and ETHERNET .....................................................37
SCH09-Woofer AMP ................................................................38
SCH10-S.Woofer AMP and HP AMP.........................................39
SCH11-Key Board and HP JACK...............................................40
EXPLODED VIEW ......................................................................41
Sealing gasket view of an air leak prevention .......................42
Sheet view of the anti-vibration .............................................43
PACKING VIEW .........................................................................44
SEMICONDUCTORS ..................................................................45
1. IC's......................................................................................45
CONTENTS
2

ABOUT THIS MANUAL
Read the following information before using the service manual.
What you can do with this manual
Search for a Ref. No. (phrase)
(Ctrl+Shift+F)
You can use the search function in Acrobat Reader to
search for a Ref. No. in schematic diagrams, printed
wiring circuit diagrams, block diagrams, and parts
lists.
1. Press Ctrl+Shift+F on the keyboard.
• The Search window appears.
2. Enter the Ref. No. you want to search for in the
Search window, and then click the Search button.
• A list of search results appears.
3. Click an item on the list.
• The screen jumps to the page for that item, and the
search phrase is displayed.
Ctrl
Shift
F
3

Using Adobe Reader (Windows version)
• Properties
Click this button and check that the printer is set to a
suitable paper size.
• Page to print
Select the following checkbox.
"More Options" : "Current View"
• Page Sizing & Handling
Select the following checkbox.
"Size" / "Size Options" : "Fit"
Add notes to this data (Sign)
The Sign function lets you add notes to the data in
this manual.
Save the le once you have nished adding notes.
[Example using Adobe Reader X]
On the "View" menu, click "Sign".
• The Sign pane appears.
[Example using Adobe Reader 9]
On the "Document" menu, click "Sign".
Magnify schematic / printed circuit board
diagrams - 1
(Ctrl+Space, mouse operation)
Press Ctrl+Space on the keyboard and drag the
mouse to select the area you want to view.
• The selected area is magnied.
• When you want to move the area shown, hold
down Space and drag the mouse.
• When you want to show a full page view, press
Ctrl+0 on the keyboard.
Ctrl Space
0
Print a magnied part of the manual
The Properties dialog box and functions will vary depending on your printer.
1. Drag the mouse to magnify the part you want to print.
2. On the "File" menu, click "Print".
3. Congure the following settings in the Print dialog box.
4. Click the Print button to start printing.
4

Magnify schematic / printed circuit board
diagrams - 2
(Pan & Zoom function)
The Pan & Zoom function lets you see which part of
a magnied diagram is being shown in a separate
window.
[Example using Adobe Reader X]
On the "View" menu, point to "Zoom", and then
click "Pan & Zoom".
• The Pan & Zoom window appears on the screen.
[Example using Adobe Reader 9]
On the "Tools" menu, point to "Select & Zoom",
and then click "Pan & Zoom Window".
Magnify schematic / printed circuit board
diagrams - 3
(Loupe Tool function)
The Loupe Tool function lets you magnify a specic
part of a diagram in a separate window.
[Example using Adobe Reader X]
On the "View" menu, point to "Zoom", and then
click "Loupe Tool".
• The Loupe Tool window appears on the screen.
[Example using Adobe Reader 9]
On the "Tools" menu, point to "Select & Zoom",
and then click "Loupe Tool Window".
5

SAFETY PRECAUTIONS
The following items should be checked for continued protection of the customer and the service technician.
leakage current check
Before returning the set to the customer, be sure to carry out either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the set is defective.
Be sure to test for leakage current with the AC plug in both polarities, in addition, when the set's power is in each state
(on, off and standby mode), if applicable.
CAUTION Please heed the following cautions and instructions during servicing and
inspection.
◎Heed the cautions!
Cautions which are delicate in particular for servicing are
labeled on the cabinets, the parts and the chassis, etc. Be
sure to heed these cautions and the cautions described in
the handling instructions.
◎Cautions concerning electric shock!
(1) An AC voltage is impressed on this set, so if you touch
internal metal parts when the set is energized, you
may get an electric shock. Avoid getting an electric
shock, by using an isolating transformer and wearing
gloves when servicing while the set is energized, or
by unplugging the power cord when replacing parts,
for example.
(2) There are high voltage parts inside. Handle with extra
care when the set is energized.
◎ Caution concerning disassembly and assembly!
Through great care is taken when parts were
manufactured from sheet metal, there may be burrs on
the edges of parts. The burrs could cause injury if ngers
are moved across them in some rare cases. Wear gloves
to protect your hands.
◎Use only designated parts!
The set's parts have specic safety properties (re
resistance, voltage resistance, etc.). Be sure to use parts
which have the same properties for replacement. The
burrs have the same properties. In particular, for the
important safety parts that are indicated by the z mark
on schematic diagrams and parts lists, be sure to use the
designated parts.
◎ Be sure to mount parts and arrange the wires
as they were originally placed!
For safety seasons, some parts use tapes, tubes or other
insulating materials, and some parts are mounted away
from the surface of printed circuit boards. Care is also
taken with the positions of the wires by arranging them
and using clamps to keep them away from heating and
high voltage parts, so be sure to set everything back as it
was originally placed.
◎Make a safety check after servicing!
Check that all screws, parts and wires removed or
disconnected when servicing have been put back in
their original positions, check that no serviced parts have
deteriorate the area around. Then make an insulation
check on the external metal connectors and between the
blades of the power plug, and otherwise check that safety
is ensured.
(Insulation check procedure)
Unplug the power cord from the power outlet, disconnect
the antenna, plugs, etc., and on the power. Using a 500V
insulation resistance tester, check that the insulation
resistance value between the inplug and the externally
exposed metal parts (antenna terminal, headphones
terminal, input terminal, etc.) is 1MΩ or greater. If it is
less, the set must be inspected and repaired.
Many of the electric and the structural parts used in the
set have special safety properties. In most cases these
properties are difcult to distinguish by sight, and the use
of replacement parts with higher ratings (rated power
and withstand voltage) does not necessarily guarantee
that safety performance will be preserved. Parts with
safety properties are indicated as shown below on the
wiring diagrams and the parts list in this service manual.
Be sure to replace them with the parts which have the
designated part number.
(1) Schematic diagrams Indicated by the z mark.
(2) Parts lists Indicated by the z mark.
The use of parts other than the designated parts could
cause electric shocks, res or other dangerous situations.
CAUTION Concerning important safety
parts
6

NOTE FOR SCHEMATIC DIAGRAM
WARNING:
Parts indicated by the z mark have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
CAUTION:
Before returning the set to the customer, be sure to carry out either (1) a leakage current check or (2) a line to chassis resistance check. If
the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the set
is defective.
WARNING:
DO NOT return the set to the customer unless the problem is identied and remedied.
NOTICE:
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM / M=1,000,000 OHM
ALL CAPACITANCE VALUES ARE EXPRESSED IN MICRO FARAD, UNLESS OTHERWISE INDICATED. P INDICATES MICRO-MICRO FARAD. EACH
VOLTAGE AND CURRENT ARE MEASURED AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT
PRIOR NOTICE.
NOTE FOR PARTS LIST
1. Parts indicated by "nsp" on this table cannot be supplied.
2. When ordering a part, make a clear distinction between "1" and "I" (i) to avoid mis-supplying.
3. A part ordered without specifying its part number can not be supplied.
4. Part indicated by " ★" mark is not illustrated in the exploded view.
WARNING: Parts indicated by the z mark have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
INSTRUCTIONS FOR HANDLING SEMI-CONDUCTORS AND OPTICAL UNIT
Electrostatic breakdown of the semi-conductors or optical pickup may occur due to a potential difference caused by
electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 MΩ) that is properly grounded to remove any static electricity that may be charged
on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate with proper grounding (1 MΩ) on the workbench or other surface,
where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the
body grounding band, be careful to avoid contacting semi-conductors with your clothing
<Incorrect>
CBA
Grounding Band
Conductive Sheet or
Copper Plate
1MΩ
1MΩ
<Correct>
CBA
7

Personal notes:
8

TECHNICAL SPECIFICATIONS
nWireless LAN
Network type : Conforming to IEEE 802.11a/b/g/n/ac
Used frequency range : 2.4 GHz, 5 GHz
nGeneral
Operating temperature : 41 °F - 95 °F (5 °C - 35 °C)
Power supply : AC 100 – 240 V, 50/60 Hz
Power consumption: 20W
Power consumption in Network Standby mode : 4.5W
Power consumption in Deep Standby mode : 0.3W
Max Analog Input : 1 Vrms
9

18 55/64(479) 6 29/64(164)
7 63/64(203)
DIMENSION
Unit : in. (mm)
Weight : 10 lbs 2 oz (4.6 kg)
10

DISASSEMBLY
• Remove each part following the ow below.
• Reassemble the removed parts in the reverse order.
• Read "Precautions During Work" before reassembling the removed parts.
• If wire bundles are removed or moved during adjustment or part replacement, reshape the wires after completing
the work. Failure to shape the wires correctly may cause problems such as noise.
HOUSING FRONT
See "DISASSEMBLY"
1. HOUSING FRONT
and "EXPLODED VIEW"
HOUSING FRONT
(Ref. No. of EXPLODED VIEW : 5)
AMP ASS'Y
See "DISASSEMBLY"
2. AMP ASS'Y
and "EXPLODED VIEW"
AMP ASS'Y
(Ref. No. of EXPLODED VIEW : C)
GRILLE FRONT / GRILLE REAR
11

Explanatory Photos for DISASSEMBLY
• For the shooting direction of each photos used in this manual, see the photo below.
• A, B, C and D in the photo below indicate the shooting directions of photos.
• The photographs with no shooting direction indicated were taken from the top of the unit.
• Photos of HEOS 7 HS2 are used in this manual.
The viewpoint of each photograph
(Shooting direction : X) [View from the top]
1. HOUSING FRONT
Proceeding : GRILLE FRONT →GRILLE REAR →HOUSING FRONT
(1) Remove the screws.
↑Shooting direction: A↑
↓Shooting direction: B↓
↓Shooting direction: D↓
↑Shooting direction: C↑
↓Shooting direction: A↓
↓Shooting direction: B↓
12

(2) Remove the connector.
2. AMP ASSY
Proceeding : GRILLE FRONT →GRILLE REAR →HOUSING FRONT →AMP ASSY
(1) Remove the screws. Remove the connector.
CN2
CN3
CN1
ANTENNA WHITE ANTENNA BLACK
J2
J1
13

PROCEDURE AFTER REPLACING THE MICROPROCESSOR, ETC.
The procedure after replacing the u-COM (microprocessor), ash ROM, etc. is as follows.
PCB Name Ref. No. Description Procedure after
Replacement Remark
MAIN 60 Module PWB ASSY C/D
Be sure to update the rmware.
Be sure to rewrite the service region setting.
Be sure to rewrite the service Release Type setting.
Procedure after Replacement
A : The software has been written. The software is not written at the time of replacement.
B : The software has been written. The software may need to be rewritten by version updates. Check the version.
C : The software has not been written. Front LED is solid purple. Back LED is solid red.
See "2. Updating by USB", "3. Service region settings update procedures" and
"4. Service Release Type settings update procedures" for information on writing the software.
D : The software has been written.
See "2. Updating by USB", "3. Service region settings update procedures" and
"4. Service Release Type settings update procedures" for information on writing the software.
14

FIRMWARE UPDATE PROCEDURE
1. MAIN PCB Update Procedure
1.1. Items to Be Prepared
・Mobile device
• A broadband internet connection
• Modem
• Wireless Router
• Ethernet cable (CAT-5 or greater recommended)
1.2. Connection of HEOS
(The gure is HEOS7 model)
(1) With Android, the HEOS app can be downloaded by searching for "HEOS by Denon" in Google Play ™ or in the page
accessed by scanning the QR code (China only).
With iOS, the HEOS app can be downloaded by searching for "HEOS by Denon" in the App Store ™ .
(2) Launch the Denon HEOS App
Router
d
15

(3) If there is a software update, follow step 1 to step 4 below.
Step 1 →Step 2 →Step 3 →Step 4
Tap the "Update Now". Tap the "Next". The software is written to this
Unit.
"Update completed" is displayed.
Tap the "Done"
Note:
This display is updating two units at
the same time.
(4) Be sure to rewrite the service region setting.
See "3. Service region settings update procedures".
16

2. Updating via USB
You can update the rmware by downloading the latest version with USB ash drive.
2.1. Connecting to the USB Memory
(1) Preparation
・ Windows PC
・ USB ash drive format : Prepare a USB ash drive formatted in FAT16 or FAT32.
bWe recommend a USB ash drive that has an LED installed.
NOTE :
• Use a memory that supports USB2.0.
• Do not run the USB ash drive through a hub.
• Do not connect a computer to the USB port of this unit using a USB cable.
• Do not use an extension cable when connecting the USB ash drive.
• Save the update le on a blank USB ash drive for use.
• If a USB ash drive cannot be updated, replace it with a different USB ash drive and perform the update again.
2.2. Unzipping the Downloaded File
1. Unzip the downloaded le on your computer.
XXXXXXXXXXX xxxxxxxxxx_xxxxxxxx.zip
2. There are zip-folder and le after unzipping.
3. Once again, unzipping.
The le must be placed in the root directory of the USB ash drive.
Note: When update is complete, the folder name on the USB ash drive changes to "heos_40.prod.update.done".
To use the les again, delete the ".done" part.
Service information.
Firmware le.
Re-unzipping is necessary.
Firmware le.
Copy this file onto the root directory of
the USB ash drive.
f
17

2.2. Start the update
1. Connect the USB memory to the HEOS Player's USB Port.
2. Updating is started automatically.
3. Player's status LED should be blinking amber during upgrading the rmware.
Example of HEOS 5 LED Actions.
LED on the front is blinking amber.
4. One the upgrade is complete, the player reboots automatically.
Example of HEOS 5 LED Actions.
LED on the front is blinking blue.
5. Ready-Congured and connected to your network.
Example of HEOS 5 LED Actions.
6. Be sure to rewrite the service region setting.
See "3. Service region settings update procedures".
--- Precautions for Updates ---
• Never remove the USB memory before the update is nished.
• Never turn off the power before an update is completed.
Once an update is started, normal operations cannot be performed until it is completed.
• When update is complete, the folder name on the USB ash drive changes to "heos_40.prod.update.done".
To use the les again, delete the ".done" part.
18

3. Serviceregionsettingsupdateprocedures
Write the Service Region setting le to this unit from the USB memory.
3.1. ItemstoBePrepared
・ Windows PC
・ USB format : Prepare a USB memory formatted in FAT16 or FAT32.
Note：
・ Do not run the USB memory through a hub.
・ Do not connect a computer to the USB port of this unit using a USB cable.
・ Do not use an extension cable when connecting the USB unit.
3.2. Creatingaserviceregionsettingle
(1) On the PC, click [Start button] – [Accessories] – [notepad] to start the notepad application.
(2) Enter 'TEXT'.
(3) Click the "File" and Click the "SaveAs..." button.
(4) Input File name and Click Save button.
Note : Typing the le name surrounded by double quotes.(No need le extension)
ModelArea Filename
North America "denon-cong-locale-set-1"
Europe "denon-cong-locale-set-2"
Japan "denon-cong-locale-set-3"
Australia "denon-cong-locale-set-4"
Korea "denon-cong-locale-set-5"
China "denon-cong-locale-set-6"
Israel "denon-cong-locale-set-7"
(5) Copy the created le to the USB memory.
3.3. InserttheUSBmemoryintheUSBport
(1) Insert the USB ash memory that contains the le created in the steps above to the USB slot on the back panel of this
unit.
(2) Check that the LED on the front panel of this unit is ashing, and then remove the USB ash memory.
The service region settings are complete.
copy to USB flash drive
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19

4. ServiceReleaseTypesettingsupdateprocedures
Write the Service Release Type setting le to this unit from the USB memory.
4.1. ItemstoBePrepared
・ Windows PC
・ USB format : Prepare a USB memory formatted in FAT16 or FAT32.
Note：
・ Do not run the USB memory through a hub.
・ Do not connect a computer to the USB port of this unit using a USB cable.
・ Do not use an extension cable when connecting the USB unit.
4.2. CreatingaserviceReleaseTypesettingle
(1) On the PC, click [Start button] – [Accessories] – [notepad] to start the notepad application.
(2) Enter 'TEXT'.
(3) Click the "File" and Click the "SaveAs..." button.
(4) Input File name "aios-cong-release-type-set-3" and Click Save button.
Note : Typing the le name surrounded by double quotes.(No need le extension)
(5) Copy the created le to the USB memory.
4.3. InserttheUSBmemoryintheUSBport
(1) Insert the USB ash memory that contains the le created in the steps above to the USB slot on the back panel of this
unit.
(2) Check that the LED on the front panel of this unit is Blue ashing, and then remove the USB ash memory.
The service Release Type settings are complete.
"aios-cong-release-type-set-3"
copy to USB flash drive
20