Sony MHC-V3 User manual

SERVICE MANUAL
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
MHC-V3/V4D
HOME AUDIO SYSTEM
9-890-660-06
2015F80-1
© 2015.06
E Model
MHC-V3/V4D
Argentina Model
Malaysia Model
Mexican Model
Saudi Arabia Model
South African Model
Thai Model
MHC-V4D
Australian Model
MHC-V3
Ver. 1.5 2015.06
SPECIFICATIONS
CD/DVD Section
Model Name Using Similar Mechanism HCD-GPX555
CD Mechanism Type CDM90-DVBU204//M
Optical Pick-up Name CMS-S76RFS7G
– Continued on next page –
Amplifier section
The following are measured at
E51 models:
AC 220 V – 240 V, 50 Hz
Other models:
AC 120 V – 240 V, 50/60 Hz
Power output (rated)
Left/Right Channel: 120 W + 120 W
(at 2 ohms, 1 kHz, 1% THD)
RMS output power (reference)
Left/Right Channel: 180 W + 180 W
(per channel at 2 ohms, 1 kHz)
Subwoofer: 360 W (at 4 ohms, 100 Hz)
Inputs
AUDIO IN L/R
Voltage 2 V, impedance 47 kilohms
(USB) port
Type A
MIC 1 (V4D), MIC 2 (V4D)
Sensitivity 1 mV, impedance
10 kilohms
Outputs (V4D)
VIDEO OUT
Max. output level 1 Vp-p, unbalanced,
Sync. negative load impedance
75 ohms
USB section
Supported bit rate
WMA:
48 kbps – 192 kbps, VBR, CBR
AAC:
48 kbps – 320 kbps, VBR, CBR
Sampling frequencies
WMA: 44.1 kHz
AAC: 44.1 kHz
Supported USB device
Mass Storage Class
Maximum current
500 mA
Disc/USB section
Supported bit rate
MPEG1 Layer-3:
32 kbps – 320 kbps, VBR
MPEG2 Layer-3:
8 kbps – 160 kbps, VBR
MPEG1 Layer-2:
32 kbps – 384 kbps, VBR
Sampling frequencies
MPEG1 Layer-3:
32 kHz/44.1 kHz/48 kHz
MPEG2 Layer-3:
16 kHz/22.05 kHz/24 kHz
MPEG1 Layer-2:
32 kHz/44.1 kHz/48 kHz
Xvid (V4D)
Video codec: Xvid video
Bit rate: 4.854 Mbps (MAX)
Resolution/Frame rate:
720 × 480 30 fps
720 × 576 25 fps
Audio codec: MP3
MPEG4 (V4D)
File format: MP4 File Format
Video codec:
MPEG4 Simple Profile
(AVC is not compatible.)
Bit rate: 4 Mbps
Resolution/Frame rate:
720 × 480 30 fps
720 × 576 25 fps
Audio codec: AAC-LC
(HE-AAC is not compatible.)
DRM: Not compatible
Disc player section
System
Compact disc and digital audio system
(V3)
Compact disc and digital audio and
video system (V4D)
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6 μW
* This output is the value
measurement at a distance of
200 mm from the objective lens
surface on the Optical Pick-up
Block with 7 mm aperture.
Frequency response
20 Hz – 20 kHz
Signal-to-noise ratio (V3)
More than 90 dB
Dynamic range (V3)
More than 88 dB
Video color system format (V4D)
Latin American model: NTSC
Other models: NTSC and PAL
FM tuner section
System
PLL quartz-locked digital synthesizer
Tuning range
87.5 MHz – 108.0 MHz (50 kHz step)
Antenna
FM wire antenna
Bluetooth section
Communication system
Bluetooth Standard version 3.1
Output
Bluetooth Standard Power Class 2
Maximum communication range
Line of sight approx. 10 m1)
Frequency band
2.4 GHz band (2.4000 GHz –
2.4835 GHz)
Modulation method
FHSS (Freq Hopping Spread Spectrum)
Compatible Bluetooth profiles2)
A2DP (Advanced Audio Distribution
Profile)
AVRCP 1.3 (Audio Video Remote
Control Profile)
SPP (Serial Port Profile)
Supported codecs
SBC (Sub Band Codec)
AAC (Advanced Audio Coding)
1) The actual range will vary depending on
factors such as obstacles between devices,
magnetic fields around a microwave oven,
static electricity, reception sensitivity,
antenna’s performance, operating system,
software application, etc.
2) Bluetooth standard profiles indicate the
purpose of Bluetooth communication
between devices.
Speaker section
Speaker system
3-way, Sound Pressure Horn
Speaker unit
Tweeter L/R: 40 mm, cone type
Mid L/R: 80 mm, cone type
Woofer: 200 mm, cone type
Rated impedance
Tweeter L/R: 2 ohms
Mid L/R: 2 ohms
Woofer: 4 ohms
General
Power requirements
E51 models:
AC 220 V – 240 V, 50 Hz
Other models:
AC 120 V – 240 V, 50/60 Hz
Power consumption
120 W
Dimensions (w/h/d) (Approx.)
280 mm × 786 mm × 280 mm (V3)
280 mm × 792 mm × 280 mm (V4D)
Mass (Approx.)
13.0 kg
Supplied accessories
Remote control (1)
R6 (Size AA) batteries (2)
FM wire antenna (1)
AC power cord (1)
Design and specifications are subject to
change without notice.
Photo: MHC-V3

MHC-V3/V4D
2
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
1.5 kΩ0.15 μF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
License and Trademark Notice
•
is a trademark of DVD Format/Logo Licensing Corporation.
• “DVD+RW”, “DVD-RW”, “DVD+R”, “DVD-R”, “DVD VIDEO”, and
the “CD” logos are trademarks.
• MPEG Layer-3 audio coding technology and patents licensed from
Fraunhofer IIS and Thomson.
• Windows Media is either a registered trademark or trademark of
Microsoft Corporation in the United States and/or other countries.
• This product is protected by certain intellectual property rights of
Microsoft Corporation. Use or distribution of such technology outside
of this product is prohibited without a license from Microsoft or an
authorized Microsoft subsidiary.
• “WALKMAN” and “WALKMAN” logo are registered trademarks of
Sony Corporation.
• This system incorporates Dolby* Digital.
* Manufactured under license from Dolby Laboratories.
Dolby and the double-D symbol are trademarks of Dolby
Laboratories.
• The Bluetooth®word mark and logos are registered trademarks
owned by Bluetooth SIG, Inc. and any use of such marks by Sony
Corporation is under license. Other trademarks and trade names are
those of their respective owners.
• The N Mark is a trademark or registered trademark of NFC Forum,
Inc. in the United States and in other countries.
• Android™ is a trademark of Google Inc.
• Google Play™ is a trademark of Google Inc.
• iPhone and iPod touch are trademarks of Apple Inc., registered in the
U.S. and other countries. App Store is a service mark of Apple Inc.
• “Made for iPod” and “Made for iPhone” mean that an electronic
accessory has been designed to connect specifically to iPod or
iPhone, respectively, and has been certified by the developer to
meet Apple performance standards. Apple is not responsible for
the operation of this device or its compliance with safety and
regulatory standards. Please note that the use of this accessory
with iPod or iPhone may affect wireless performance.
• THIS PRODUCT IS LICENSED UNDER THE MPEG-4 VISUAL
PATENT PORTFOLIO LICENSE FOR THE PERSONAL AND
NON-COMMERCIAL USE OF A CONSUMER FOR
(i) ENCODING VIDEO IN COMPLIANCE WITH THE MPEG-4
VISUAL STANDARD (“MPEG-4 VIDEO”)
AND/OR
(ii)DECODING MPEG-4 VIDEO THAT WAS ENCODED BY
A CONSUMER ENGAGED IN A PERSONAL AND NON-
COMMERCIAL ACTIVITY AND/OR WAS OBTAINED FROM
A VIDEO PROVIDER LICENSED TO PROVIDE MPEG-4
VIDEO.
NO LICENSE IS GRANTED OR SHALL BE IMPLIED FOR ANY
OTHER USE. ADDITIONAL INFORMATION INCLUDING THAT
RELATING TO PROMOTIONAL, INTERNAL AND COMMER-
CIAL USES AND LICENSING MAY BE OBTAINED FROM MPEG
LA, L.L.C.
HTTP://WWW.MPEGLA.COM
• All other trademarks are trademarks of their respective owners.
• In this manual, ™ and ® marks are not specified.
•Abbreviation
AR : Argentina model
AUS : Australian model
E2 : 120 V AC area in E model
E4 : African model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
MY : Malaysia model
SAF : South African model
TH : Thai model
Ver. 1.5

MHC-V3/V4D
3
1. SERVICING NOTES ............................................. 4
2. DISASSEMBLY
2-1. Disassembly Flow........................................................... 9
2-2. Side L, R Panel ............................................................... 10
2-3. Top Panel Block.............................................................. 10
2-4. Loading Panel Block....................................................... 11
2-5. CDM Block..................................................................... 12
2-6. Back Panel Block............................................................ 13
2-7. TUNER Board ................................................................ 14
2-8. ARAGON Board............................................................. 15
2-9. DAMP Board .................................................................. 16
2-10. Chassis Block.................................................................. 17
2-11. Bluetooth Module, SMPS Board .................................... 18
2-12. Front Panel Block ........................................................... 19
2-13. RC-S801/A5 (WW), SPEAKER LED Board,
IR Board, Front Panel Assy ............................................ 20
2-14. Loudspeaker (20 cm) (Woofer) (SP5)............................. 21
2-15. Loudspeaker (8 cm) (Mid: L-ch) (SP1),
Loudspeaker (8 cm) (Mid: R-ch) (SP3).......................... 22
2-16. Service, Optical Device(7G), Wire (Flat Type) .............. 23
2-17. Volume Knob Block........................................................ 24
3. TEST MODE ............................................................ 25
4. ELECTRICAL CHECK ......................................... 31
5. TROUBLESHOOTING .......................................... 33
6. DIAGRAMS
6-1. Block Diagram - CD/USB Section -............................... 39
6-2. Block Diagram - MAIN Section -................................... 40
6-3. Block Diagram - AMP Section -..................................... 41
6-4. Block Diagram
- PANEL/POWER SUPPLY Section -............................ 42
6-5. Printed Wiring Board
- ARAGON Board (Component Side) -.......................... 44
6-6. Printed Wiring Board
- ARAGON Board (Conductor Side) - ........................... 45
6-7. Schematic Diagram - ARAGON Board (1/6) -............... 46
6-8. Schematic Diagram - ARAGON Board (2/6) -............... 47
6-9. Schematic Diagram - ARAGON Board (3/6) -............... 48
6-10. Schematic Diagram - ARAGON Board (4/6) -............... 49
6-11. Schematic Diagram - ARAGON Board (5/6) -............... 50
6-12. Schematic Diagram - ARAGON Board (6/6) -............... 51
6-13. Printed Wiring Board - PANEL Board - ......................... 52
6-14. Schematic Diagram - PANEL Board -............................ 53
6-15. Printed Wiring Board - DAMP Board -.......................... 54
6-16. Schematic Diagram - DAMP Board -............................. 55
6-17. Printed Wiring Board - TUNER Board - ........................ 56
6-18. Schematic Diagram - TUNER Board -........................... 57
TABLE OF CONTENTS
6-19. Printed Wiring Board - USB Board -.............................. 58
6-20. Schematic Diagram - USB Board - ................................ 58
6-21. Printed Wiring Board - MIC Board (V4D) - .................. 58
6-22. Schematic Diagram - MIC Board (V4D) - ..................... 59
6-23. Printed Wiring Board - IR Board - ................................. 60
6-24. Schematic Diagram - IR Board - .................................... 60
6-25. Printed Wiring Board - SPEAKER LED Board -........... 60
6-26. Schematic Diagram - SPEAKER LED Board -.............. 60
7. EXPLODED VIEWS
7-1. Side Panel Section .......................................................... 76
7-2. Loading Panel Section .................................................... 77
7-3. Back Panel Section ......................................................... 78
7-4. ARAGON Board Section................................................ 79
7-5. Chassis Section ............................................................... 80
7-6. Front Panel Section......................................................... 81
7-7. Speaker Cabinet Section ................................................. 82
7-8. Top Panel Section ........................................................... 83
7-9. CDM Block Section........................................................ 84
7-10. CD Mechanism Section
(CDM90-DVBU204//M) ................................................ 85
8. ELECTRICAL PARTS LIST .............................. 86
Accessories are given in the last of the electrical parts list.
Ver. 1.5

MHC-V3/V4D
4
SECTION 1
SERVICING NOTES
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 °C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the
leadfree mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
MODEL IDENTIFICATION
This appliance is classified as a
CLASS 1 LASER product by
IEC60825-1:2007. This marking
is located on the rear exterior.
Model Part No.
V3: E2 4-536-755-0[]
V3: AUS 4-536-756-0[]
V3: E51 4-536-759-0[]
V4D: E2 4-539-781-0[]
V4D: TH 4-539-782-0[]
V4D: E4 4-539-783-0[]
V4D: EA 4-539-784-0[]
V4D: SAF 4-544-279-0[]
V4D: MY 4-544-280-0[]
V4D: E51 4-566-622-0[]
V4D: AR 4-566-623-0[]
V4D: MX 4-566-624-0[]
• Abbreviation
AR : Argentina model
AUS : Australian model
E2 : 120 V AC area in E model
E4 : African model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
MY : Malaysia model
SAF : South African model
TH : Thai model
PLAYABLE DISCS
• AUDIO CD
• CD-R/CD-RW/DVD-R/DVD-RW
– audio data
– MP3 files that conforms to ISO9660 Level 1/Level 2, or
Joliet (expansion format).
Notes
• MP3 (MPEG 1 Audio Layer-3) is a standard format defined
by ISO (International Organization for Standardization) which
compresses audio data. MP3 files must be in MPEG 1 Audio
Layer-3 format.
• The system can only play back MP3 files that have a file
extension of “.mp3”.
• JIG
When disassembling the set, use the following jig (for front
panel removal).
Part No.: J-2501-238-A JIG FOR SPEAKER REMOVAL
– Back Panel –
PART No.
Destination code
SISTEMA DE AUDIO PARA EL HOGAR
AC 220-240V ~ 50Hz 120W
NOSERIE 00000634-536-759-01 E51
HECHO EN MALASIA
CERTIFICADO NOX-XXX-XX-XXXX
R
03/2014
MODELO MHC-V3
Ver. 1.5

MHC-V3/V4D
5
NOTICE OF BOARD VERSION CHECK (MHC-V4D)
ARAGON board and DAMP board is synchronised. When any of
the mounted board replacement is necessary, order the version of
mounted ARAGON board (Suffix-12) and DAMP board (Suffix-12
or 13).
NOTE OF REPLACING THE IC001, IC002, IC105, IC106,
IC301 (V4D) AND IC302 (V4D) ON THE ARAGON
BOARD
IC001, IC002, IC105, IC106, IC301 (V4D) and IC302 (V4D) on
the ARAGON board cannot exchange with single. When these
parts on the ARAGON board are damaged, exchange the entire
mounted board.
NOTE OF REPLACING THE IC3002 ON THE TUNER
BOARD
IC3002 on the TUNER board cannot exchange with single. When
this part on the TUNER board is damaged, exchange the entire
mounted board.
NOTE OF REPLACEMENT OF THE MS-476 BOARD
When the MS-476 board is defective, exchange the entire
LOADING COMPLETE ASSY (T).
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure:
1. Press [\/1] button to turn the power on.
2. Press the [FUNCTION] button until the message “CD
FUNCTION” (V3) or “DVDCD” (V4D) is displayed.
3. Press the [x]*1 / [X]*2 button and [REC TO USB] button
simultaneously and hold down for around 5 seconds.
4. The message “UNLOCKED” is displayed and the disc tray is
unlocked.
Note: When “LOCKED”is displayed, the slot lock is not released by
turning power on/off with the [\/1]button.
NOTE OF REPLACING THE IC1001 ON THE DAMP
BOARD AND THE COMPLETE DAMP BOARD
When IC1001 on the DAMP board and the complete DAMP board
are replaced, it is necessary to spread the compound between parts
and heat sink.
Part No. Description
7-300-009-67 THERMAL COMPOUND (TIG2000)
Spread the compound referring to the figure below.
IC1001
thermal compound (TIG2000)
– DAMP Board (Component Side) –
NOTE OF REPLACING ARAGON BOARD OR
BLUETOOTH MODULE OR RC-S801/A5 (WW) BOARD
When the ARAGON board or BLUETOOTH module or
RC-S801/A5 (WW) board are replaced, please execute the below
service mode.
Pairing this system with a Bluetooth device
1. Press the [\/1] button to turn the power on.
2. Place the Bluetooth device within 1 meter (3 feet) from the
system.
3. Press BLUETOOTH on the unit to select Bluetooth function.
“BT AUDIO” appears in the display panel.
4. Hold down BLUETOOTH on the unit for 2 seconds or more.
“PAIRING” flashes in the display panel.
5. Perform the pairing procedure on the Bluetooth device.
6. Select the model number of the unit on the display of the
Bluetooth device.
For example, select “SONY : MHC-V3/MHC-V4D”. If
passkey is required on the Bluetooth device, enter “0000”.
7. Perform the Bluetooth connection on the Bluetooth device.
8. When pairing is completed and the Bluetooth connection is
established, the Bluetooth device name appears in the display
panel.
9. To cancel pairing operation, hold down BLUETOOTH on the
unit for 2 seconds or more until “BT AUDIO” appears in the
display panel.
Connecting with a smartphone by one touch (NFC)
Note: The operation in this mode must use a NFC-compatible smartphone
(Smartphones with a built-in NFC function [OS: Android 2.3.3 or
later, excluding Android 3.x])
1. Press the [\/1] button to turn the power on.
2. Download and install the app “NFC Easy Connect”.
Download the free Android app from Google Play by searching
for “NFC Easy Connect”.
3. Start the app “NFC Easy Connect” on the smartphone.
Make sure that the application screen is displayed.
4. Touch the smartphone to the N-Mark on the system until the
smartphone vibrates.
Complete the connection by following the instructions
displayed on the smartphone.
5. When pairing is completed and the Bluetooth connection is
established, the Bluetooth device name appears in the display
panel.
Ver. 1.5
Note: *1V3 model
*2V4D model

MHC-V3/V4D
6
Playing music from a Bluetooth device
For a Bluetooth device
1. Press the [\/1] button to turn the power on.
2. Press BLUETOOTH on the unit to select Bluetooth function.
“BT AUDIO” appears in the display panel.
3. Establish connection with the Bluetooth device.
Press BLUETOOTH on the unit to connect to the last
connected Bluetooth device.
Perform the Bluetooth connection from the Bluetooth device if
the device is not connected.
Once the connection is established, the Bluetooth device name
appears in the display panel.
4. Press N.
Depending on the Bluetooth device,
– you may have to press Ntwice.
– you may need to start playback of an audio source on the
Bluetooth device.
For an NFC-compatible smartphone
1. Press the [\/1] button to turn the power on.
Touch the smartphone to the N-Mark on the system to establish
the Bluetooth connection.
Start playback of an audio source on the smartphone. For
details on playback, refer to the operating instructions of your
smartphone.
To disconnect the Bluetooth device
For a Bluetooth device
Press BLUETOOTH on the unit.
“BT AUDIO” appears in the display panel.
For an NFC-compatible smartphone
Touch the smartphone to the N-Mark on the system again.
To erase all the pairing registration information perform
COLD RESET test mode (Refer page 25).
BOND FIXATION OF ELECTRIC PARTS
When DAMP board is replaced or the following object parts are
replaced, it is necessary to fix parts to the boards by using a speci-
fied bond without fail.
• Object boards
Complete DAMP board
• Object parts
Board Ref. No.
DAMP C1071, C1073, C1126, C1127, C1128, C1129,
C1130
• Use bond
Part No. Description
7-600-020-70 ADHESIVE (SC608Z2) 180ML
• Parts position
1. DAMP board (page 6)
1. DAMP board
C1130
C1127
C1071
C1073
C1128
C1129
C1126
– DAMP Board (Component Side) –
The portion which applies bond:
Ver. 1.2

MHC-V3/V4D
7
HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF
Note 1: After the side panel and top panel are removed, this work is done.
Note 2: Please prepare the thin wire (clip etc. processed to the length of 8 cm or more).
2Insert the clip etc.
3
– Left view –
– Top view –
hole
CD mechanism deck
8 cm or more
tray
1Remove the side L, R panel, top panel block.
(Illustration of disassembly is omitted.)
Insert the clip etc. processed to the
length of 8 cm or more in the hole
on the side of the chassis and push.
Note: Push after it inserts it
in this hole well.
Ver. 1.1

MHC-V3/V4D
8
CAPACITOR DISCHARGE FOR ELECTRIC SHOCK PREVENTION
Switching Regulator Board (Conductor side view) (MHC-V3/V4D)
In checking the Switching Regulator board, make 3 capacitors discharge of C914, C1003 and C1006 for eletrical shock prevention.
800 :/5 W
800 :/5 W
800 :/5 W
C1006
C1003
C914
Ver. 1.1

MHC-V3/V4D
9
2-3. TOP PANEL BLOCK
(Page 10)
2-4. LOADING PANEL BLOCK
(Page 11)
2-5. CDM BLOCK
(Page 12)
2-13. RC-S801/A5 (WW),
SPEAKER LED BOARD, IR BOARD,
FRONT PANEL ASSY
(Page 20)
2-2. SIDE L, R PANEL
(Page 10)
2-17. VOLUME KNOB BLOCK
(Page 24)
2-12. FRONT PANEL BLOCK
(Page 19)
2-6. BACK PANEL BLOCK
(Page 13)
2-7. TUNER BOARD
(Page 14)
2-8. ARAGON BOARD
(Page 15)
2-9. DAMP BOARD
(Page 16)
2-10. CHASSIS BLOCK
(Page 17)
2-14. LOUDSPEAKER (20cm)
(WOOFER) (SP5)
(Page 21)
2-15. LOUDSPEAKER (8cm)
(MID: L-CH) (SP1),
LOUDSPEAKER (8cm)
(MID: R-CH) (SP3)
(Page 22)
2-11. BLUETOOH MODULE,
SMPS BOARD
(Page 18)
2-16. SERVICE, OPTICAL DEVICE(7G),
WIRE (FLAT TYPE)
(Page 23)
SET
Note: Disassemble the unit in the order as shown below.
2-1. DISASSEMBLY FLOW
SECTION 2
DISASSEMBLY
Ver. 1.5

MHC-V3/V4D
10
Note: Follow the disassembly procedure in the numerical order given.
2-2. SIDE L, R PANEL
2-3. TOP PANEL BLOCK
1two screws
(+BVTP 3 u10)
1two screws
(+BVTP 3 u10)
2two screws
(+BVTP 3 u10)
2two screws
(+BVTP 3 u10)
3Remove the panel, side L
in the direction of the arrow.
4panel, side L
3Remove the panel, side R
in the direction of the arrow.
4panel, side R
Ver. 1.3
1two screws
(+BVTP 3 u10)
9panel, top block
3six claws
2filament tape
4Remove the panel, top block
in the direction of the arrow.
5wire (flat type) (13 core)
(CN114)
6Remove the USB wire
from the clamp (L35)
7CN6001 (5P)
8CN3003 (4P)
Note: When installing the wire
(flat type), ensure that the
colored line is not slanted
after insertion.
colored line
Insert is straight to the interior.
wire (flat type)
connector
OK
colored line
Insert is incline
wire (flat type)
connector
NG
(V4D)
USB Wire
(CN6001) (5P)
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PANEL board clamp (L35)

MHC-V3/V4D
11
2-4. LOADING PANEL BLOCK
1Insert the clip etc.
2Draw out the tray.
3three claws
4panel, loading
block
– Left view –
– Top view –
hole
CD mechanism deck
8 cm or more
tray
Insert the clip etc. processed to the
length of 8 cm or more in the hole
on the side of the chassis and push.
Note: Push after it inserts it
in this hole well.
Ver. 1.1

MHC-V3/V4D
12
2-5. CDM BLOCK
2two screws
(+BVTP 3 u8)
3Remove the CDM block
in the direction of the arrow.
2four screws
(+BVTP 3 u8)
4wire (flat type)
(24 core) (CN302)
5wire (flat type)
(5 core) (CN303)
6CN401
(6P)
7CDM block
CDM block
– Top rear view –
Note 2: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
Insert is shallow
Insert is straight
to the interior.
connector
Insert is incline
connector connector connector
connector connector
Note 1: When installing the wire (flat type), ensure that
the colored line is not slanted after insertion.
colored line colored line
Insert is straight to the interior. Insert is incline
wire (flat type) wire (flat type)
connectorconnector
1Remove the wire from the hook.
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hook DAMP board
OK NG
OK NG NG
Ver. 1.1

MHC-V3/V4D
13
hole
hook
hook
hole
– Right view –
1CN1004 (2P)
2three screws
(+BVTP 3 u8) 2two screws
(+BVTP 3 u8)
2two screws
(+BVTP 3 u8)
2one screw
(+BVTP 3 u8)
2one screw
(+BVTP 3 u8)
3back panel block
Note 1: When installing the back panel block,
align three hooks and three holes.
– Top rear view –
Note 2: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
Insert is shallow
Insert is straight
to the interior.
connector
Insert is incline
connector connector connector
connector connector
OK NG NG
(V4D)
(V4D)
2-6. BACK PANEL BLOCK
Ver. 1.1

MHC-V3/V4D
14
2-7. TUNER BOARD
– Top rear view –
2two screws
(+BVTP 3 u8)
3TUNER board
1wire (flat type)
(15 core) (CN852) (V3)
wire (flat type)
(19 core) (CN853) (V4D)
Note 2: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
Insert is shallow
Insert is straight
to the interior.
connector
Insert is incline
connector connector connector
connector connector
Note 1: When installing the wire (flat type), ensure that
the colored line is not slanted after insertion.
colored line colored line
Insert is straight to the interior. Insert is incline
wire (flat type) wire (flat type)
connectorconnector
OK NG
OK NG NG
(V4D)
Ver. 1.1

MHC-V3/V4D
15
2-8. ARAGON BOARD
• Abbreviation
AUS : Australian model
EA : Saudi Arabia model
MY : Malaysia model
SAF : South African model
Ver. 1.3
– Top rear view –
2three screws
(+BVTP 3 u8)
3clamp (L35)
3clamp (L35)
2one screw
(+BVTP 3 u8)
8ARAGON board
1wire (flat type)
(17 core) (CN1001)
5wire (flat type)
(10 core) (CN102)
6wire (flat type)
(8 core) (CN105)
4CN001 (6P)
7CN115 (5P)
(AUS, SAF, EA, MY)
Note 2: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
Insert is shallow
Insert is straight
to the interior.
connector
Insert is incline
connector connector connector
connector connector
Note 1: When installing the wire (flat type), ensure that
the colored line is not slanted after insertion.
colored line colored line
Insert is straight to the interior. Insert is incline
wire (flat type) wire (flat type)
connectorconnector
OK NG
OK NG NG

MHC-V3/V4D
16
– Top rear view –
4one screw
(+BVTP 3 u8)
5two screws
(+BVTP 3 u10)
6heat sink
7DAMP board
1CN1006 (4P)
3CN1005 (8P)
2CN1007 (3P)
4two screws
(+BVTP 3 u8)
Note: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
Insert is shallow
Insert is straight
to the interior.
connector
Insert is incline
connector connector connector
connector connector
OK NG NG
2-9. DAMP BOARD
Ver. 1.1

MHC-V3/V4D
17
2three screws
((4 u13) (TR-184A))
– Top rear view –
4chassis block
1CN901 (2P)
3clamp
2three screws
((4 u13) (TR-184A))
Note: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
Insert is shallow
Insert is straight
to the interior.
connector
Insert is incline
connector connector connector
connector connector
OK NG NG
2-10. CHASSIS BLOCK
Ver. 1.1

MHC-V3/V4D
18
2-11. BLUETOOH MODULE, SMPS BOARD
1filament tape
1filament tape 2wire (flat type)
(10 core)
3bluetooth module
4four screws
(+BVTP 3 u8)
5filament tape
4two screws
(+BVTP 3 u8)
6bracket, chassis
7Remove the wire
from holder, wire
8three screws
(+PWH 3 u8 (SUMITITE))
9SMPS board
0chassis, block
8six screws
(+PWH 3 u8 (SUMITITE))
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bluetooth module
bracket, chassis
holder, wire
filament tape
Note : When installing the wire (flat type), ensure that
the colored line is not slanted after insertion.
colored line colored line
Insert is straight to the interior. Insert is incline
wire (flat type) wire (flat type)
connectorconnector
OK NG
Ver. 1.1

MHC-V3/V4D
19
2-12. FRONT PANEL BLOCK
2 Insert the jig into a space and slowly
remove the panel, front block.
Note 1: When using a jig, please work
so as not to injure panel, front
block and speaker cabinet.
2 Insert the jig into a space and slowly
remove the panel, front block.
Note 1: When using a jig, please work
so as not to injure panel, front
block and speaker cabinet.
3 All bosses are removed while moving
jig in the direction of the arrow, and
panel, front block is removed.
3 All bosses are removed while moving
jig in the direction of the arrow, and
panel, front block is removed.
total fourteen bosses
1one screw
((4 u13) (TR-184A))
4Remove the panel, front block
in the direction of an arrow.
6panel,
front block
5terminal (wide side)
[yellow]
5terminal (wide side)
[yellow]
5terminal (narrow)
[black/yellow]
5terminal (narrow)
[black/yellow]
rib
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:LUHVHWWLQJ
rib
Ver. 1.1

MHC-V3/V4D
20
– Front panel assy rear view –
2one screw
(+BVTP 3 u8)
8one screw
(+BVTP 3 u8)
0one screw
(+BVTP 3 u8)
qa IR board
qs panel, front assy
9SPEAKER LED board
3bracket, NFC
4wire (flat type)
(15 core)
6cushion
7filament tape
1filament tape
5RC-S801/A5 (WW)
Note: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
Insert is shallow
Insert is straight
to the interior.
connector
Insert is incline
connector connector connector
connector connector
OK NG NG
2-13. RC-S801/A5 (WW), SPEAKER LED BOARD, IR BOARD, FRONT PANEL ASSY
Ver. 1.5