Sony MHC-V71 User manual

SERVICE MANUAL
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
HOME AUDIO SYSTEM
9-890-695-02
2018E81-1
© 2018.05
US Model
Canadian Model
MHC-V71
AEP Model
UK Model
E Model
Australian Model
MHC-V71D
Ver. 1.1 2018.05
SPECIFICATIONS
CD/DVD
Section
Model Name Using Similar Mechanism MHC-V77W/V77DW
CD/DVD Mechanism Type CDM90-DVBU204//M
Optical Pick-up Name CMS-S76RFS7G1 OR CMS-S76RFS7GP
– Continued on next page –
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(US models only)
With 4 ohm loads, both channels driven, from
400 Hz – 20,000 Hz; rated 60 watts per channel
minimum RMS power, with no more than 0.7%
total harmonic distortion from 250 milliwatts to
rated output.
Speaker section
Speaker system:
 3-way,DoubleBassReex
Speaker unit:
Tweeter L/R: 50 mm (2 in), cone type
Midrange L/R: 120 mm (4 3/4 in), cone type
Woofer: 300 mm(11 7/8 in), cone type
Inputs
AUDIO/PARTY CHAIN IN L/R (V71):
Voltage 2 V, impedance
24 kilohms
AUDIO/PARTY CHAIN IN (TV) L/R (V71D):
Voltage 2 V, impedance
24 kilohms
TV (ARC) (V71D):
Supported audio signal:
2-channel Linear PCM
MIC1:
Sensitivity 1 mV, impedance
10 kilohms
MIC2/GUITAR:
Sensitivity 1 mV, impedance
10 kilohms (When guitar mode is
turned off.)
Sensitivity 200 mV, impedance
250 kilohms (When guitar mode is
turned on.)
Outputs
AUDIO/PARTY CHAIN OUT L/R:
Voltage 2 V, impedance 1 kilohm
VIDEO OUT (V71D):
 Max.outputlevel1Vp-p,
unbalanced, Sync. negative load
impedance 75 ohms
HDMI OUT (TV) ARC (V71D):
Supported audio signal:
2-channel Linear PCM (up to
48 kHz), Dolby Digital
HDMI section (V71D)
Connector:
Type A (19 pin)
Disc player section
System:
Compact disc and digital audio
system (V71)
Compact disc and digital audio
and video system (V71D)
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
Video color system format (V71D):
Latin American model:
NTSC
Other models:
NTSC and PAL
USB section
Supported USB device:
Mass Storage Class
Maximumcurrent:
1 A
(USB) port:
Type A
FM tuner section
FM stereo, FM superheterodyne tuner
Antenna:
FM lead antenna
Tuning range:
87.5 MHz – 108.0 MHz (100 kHz
step) (V71)
87.5 MHz – 108.0 MHz (50 kHz
step) (V71D)
BLUETOOTH section
Communication system:
BLUETOOTH Standard version 4.2
Output:
BLUETOOTH Standard Power Class 2
Maximumoutputpower(V71D):
< 9.5 dBm
Maximumnumberofdevicestoberegistered:
8 devices
Maximumnumberofsimultaneousconnection
(Multipoint):
3 devices
Maximumcommunicationrange:
 Lineofsightapprox.10m(33ft)*1
Frequency band:
2.4 GHz band (2.4000 GHz –
2.4835 GHz)
Modulation method:
FHSS (Freq Hopping Spread Spectrum)
Compatible BLUETOOTH profiles*2:
A2DP (Advanced Audio Distribution
Profile)
AVRCP (Audio Video Remote
Control Profile)
SPP (Serial Port Profile)
HFP (Hands-free Profile)
HSP (Headset Profile)
Supported codecs:
SBC (Subband Codec)
AAC (Advanced Audio Coding)
LDAC
*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.
NFC section (V71D)
Operating frequency:
13.56 MHz
Supported audio formats
Supported bit rate and sampling frequencies:
MP3:
32/44.1/48 kHz, 32 kbps –
320 kbps (VBR)
AAC:
44.1 kHz, 48 kbps – 320 kbps
(CBR/VBR)
WMA:
44.1 kHz, 48 kbps – 192 kbps
(CBR/VBR)
WAV:
44.1/48 kHz (16 bit)
Supported video formats (V71D)
Xvid:
Video codec: Xvid video
Bit rate: 4.854 Mbps (MAX)
Resolution/Frame rate:
720 × 480, 30 fps
 720×576,25fps(exceptforLatin
American model)
Audio codec: MP3
MPEG4:
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(exceptforLatin
American model)
Audio codec: AAC-LC (HE-AAC is
not compatible.)
DRM: Not compatible
Note:
Be sure to keep your PC used for service and
checking of this unit always updated with the
latest version of your anti-virus software.
In case a virus affected unit was found during
service, contact your Service Headquarters.
MHC-V71/V71D
Photo: MHC-V71D
SYSSET
2018/05/3001:52:46(GMT+09:00)

MHC-V71/V71D
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.
NOTES ON CHIP COMPONENT REPLACEMENT
• Neverreuseadisconnectedchipcomponent.
• Noticethattheminussideofatantalumcapacitormaybedam-
aged by heat.
FLEXIBLE CIRCUIT BOARD REPAIRING
• Keepthetemperatureofthesolderingironaround270°Cdur-
ing 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.
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.
General
Power requirements:
US, CND models:
AC 120 V, 60 Hz
ExceptUS,CNDmodels:
AC 120 V – 240 V, 50/60 Hz
Power consumption:
120 W
Power consumption (at the Power Saving
mode) (V71D):
0.5 W (When “BT STBY” is set to
“OFF” and [CONTROL FOR
HDMI] is set to [OFF].)
2 W* (When “BT STBY” is set to
“ON” and [CONTROL FOR HDMI]
is set to [ON].)
Dimensions(W/H/D)(Approx.):
370 mm × 930 mm × 427 mm
 (145/8inx365/8inx167/8in)
Mass(Approx.):
22 kg (48 lb 9 oz)
Operating temperature:
 5°Cto35°C(41°Fto95°F)
* The power consumption of the system
will be less than 0.5 W when there is no
HDMI connection and “BT STBY” is set
to “OFF”.
Unpacking
• 
This unit (MHC-V71/V71D) (1)
•  Remote control (1)
• R03(sizeAAA)batteries(2)
• FMleadantenna(1)
• ACpowercord(mainslead)(1)
• ACplugadaptor*(1)(suppliedonlyfor
certain areas) (V71D)
* This plug adaptor is not for the use in
Chile, Paraguay and Uruguay. Use this
plug adaptor in the countries where it is
necessary.
Design and specifications are subject to
change without notice.
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.
• WALKMAN®andWALKMAN®logo are
registered trademarks of Sony Corpora-
tion.
• 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.
• ThissystemincorporatesDolby*Digital.
* Manufactured under license from Dolby
Laboratories. Dolby, Dolby Audio, and the
double-D symbol are trademarks of Dolby
Laboratories.
• This system incorporates High-
Definition Multimedia Interface
(HDMI™) technology. The terms HDMI
and HDMI High-Definition Multimedia
Interface, and the HDMI Logo are
trademarks or registered trademarks of
HDMI Licensing Administrator, Inc. in
the United States and other countries.
• “BRAVIA” is a trademark of Sony
Corporation.
• LDAC™andLDAClogoaretrademarks
of Sony Corporation.
• 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, Google Play, and the Google
Play logo are trademarks of Google LLC.
Ver. 1.1
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
• Apple, iPhone, iPod touch, and Siri are
trademarks of Apple Inc., registered in
the U.S. and other countries. App Store is
a service mark of Apple Inc., registered
in the U.S. and other countries.
• UseoftheMadeforApplebadgemeans
that an accessory has been designed
to connect specifically to the Apple
product(s) identified in the badge, 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.
• 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 STAN-
DARD (“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. AD-
DITIONAL INFORMATION INCLUDING
THAT RELATING TO PROMOTIONAL,
INTERNAL AND COMMERCIAL 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.
SYSSET
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MHC-V71/V71D
3
1. SERVICING NOTES ............................................. 4
2. DISASSEMBLY
2-1. Disassembly Flow........................................................... 9
2-2. Side Panel L, R ............................................................... 10
2-3. Loading Panel Assy ........................................................ 11
2-4. Top Panel (Vanilla) Section ............................................ 12
2-5. Rear Cover, Ventilation Cover ........................................ 13
2-6. Back Panel Section ......................................................... 14
2-7. CDM Section .................................................................. 15
2-8. Service,OpticalDevice(7G),FlexibleFlatCable ......... 16
2-9. MOTHERBOARD Board............................................... 17
2-10. SMPS Board, Chassis Section ........................................ 18
2-11. Front Panel (Vanilla) Section.......................................... 19
2-12. Loudspeaker (320mm)-266-11 (Woofer) (SP5).............. 20
2-13. Loudspeaker (120mm)-270-11 (Mid: L-CH) (SP1),
Loudspeaker (120mm)-270-11 (Mid: R-CH) (SP3) ....... 21
2-14. Bottom Cover Section..................................................... 22
3. TEST MODE ............................................................ 23
4. ELECTRICAL CHECK ......................................... 24
5. TROUBLESHOOTING .......................................... 25
6. DIAGRAMS
6-1. Block Diagram - MAIN Section (1/2) -.......................... 33
6-2. Block Diagram - MAIN Section (2/2) -.......................... 34
6-3. Block Diagram - AMP Section -..................................... 35
6-4. Block Diagram - CD/DVD, USB, HDMI Section - ....... 36
6-5. Block Diagram - TOUCH, LED DRIVER Section -...... 37
6-6. Block Diagram
- PANEL, POWER SUPPLY Section (1/2) - .................. 38
6-7. Block Diagram
- PANEL, POWER SUPPLY Section (2/2) - .................. 39
6-8. Printed Wiring Board - MOTHERBOARD Board -....... 41
6-9. Printed Wiring Board
- SENSOR Board (Component Side) - ........................... 42
6-10. Printed Wiring Board
- SENSOR Board (Conductor Side) - ............................. 43
TABLE OF CONTENTS
6-11. Printed Wiring Board
- SMPS Board (EA, BR, AR, LA9, E12),
SMPS (EMC) Board
(US,CND,AEP,UK,RU,MY,AUS,E4)-.................... 44
6-12. Printed Wiring Board -
HUB Board
(US,CND,AEP,UK,RU,MY,AUS,E4),
HUB //NON-EMC Board (EA, BR, AR, LA9, E12) -.... 45
6-13. Printed Wiring Board - MIC USB Board - ..................... 46
6-14. Printed Wiring Board - VFD Board -.............................. 46
6-15. PrintedWiringBoard-360BACKLBoard- ................ 47
6-16. PrintedWiringBoard-360BACKRBoard-................ 47
6-17. Printed Wiring Board - 360 FR L Board - ...................... 48
6-18. Printed Wiring Board - 360 FR R Board - ...................... 48
6-19. PrintedWiringBoard-POWERKEYBoard-............... 49
6-20. Printed Wiring Board - EXTENSION Board - ............... 49
6-21. Printed Wiring Board - NFC Board -.............................. 49
6-22. Printed Wiring Board - IR Board -.................................. 49
6-23. PrintedWiringBoard-SPKMIDLBoard- .................. 50
6-24. PrintedWiringBoard-SPKMIDRBoard-.................. 50
6-25. Printed Wiring Board - SW LED L Board -.................... 50
6-26. Printed Wiring Board - SW LED R Board - ................... 50
7. EXPLODED VIEWS
7-1. Side Panel Section .......................................................... 51
7-2. Loading Panel, Rear Cover Section................................ 52
7-3. Back Panel Section ......................................................... 53
7-4. MOTHERBOARD Board Section.................................. 54
7-5. SMPS Board, Chassis Section ........................................ 55
7-6. Front Panel Section......................................................... 56
7-7. Bottom Cover Section..................................................... 57
7-8. Speaker Cabinet Section ................................................. 58
7-9. Top Panel Section ........................................................... 59
7-10. CDM Section .................................................................. 60
7-11. CD/DVD Mechanism Section
(CDM90-DVBU204//M) ................................................ 61
8. ELECTRICAL PARTS LIST .............................. 62
Accessories are listed in the last part of the electrical parts list.
SYSSET
2018/05/3001:52:46(GMT+09:00)

MHC-V71/V71D
4
SECTION 1
SERVICING NOTES
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ow)
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specied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exible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reective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.
For customers in AEP, UK
Thisapplianceisclassiedasa
CLASS 1 LASER product under
IEC 60825-1:2007. This marking
islocatedontherearexterior.
For customers in EA
Thisapplianceisclassiedasa
CLASS 1 LASER product under
IEC 60825-1:2007. This marking
islocatedontherearexterior.
PLAYABLE DISCS
• DVDVIDEO
• DVD-R/DVD-RWinDVDVIDEOformatorvideomode
• DVD+R/DVD+RWinDVDVIDEOformat
• VIDEOCD(Ver.1.0,1.1,and2.0discs)
• SuperVCD
• CD-R/CD-RW/CD-ROMinVIDEOCDformatorsuperVCD
format
• AUDIOCD
• CD-R/CD-RWinAUDIOCDformat
PLAYABLE FILES ON DISCS
• Music:
MP3les(.mp3)*1*2
• Video:
MPEG4les(.mp4/.m4v)*2*3,Xvidles(.avi)
PLAYABLE FILES ON USB DEVICE
• Music:
MP3les(.mp3)*1*2,WMAles(.wma)*2,AACles(.m4a/
.mp4/.3gp)*2,WAVles(.wav)*2
• Video:
MPEG4les(.mp4/.m4v)*2*3,Xvidles(.avi)
*1 MP3(MPEG1AudioLayer3)isastandardformatdened
byISO/MPEGforcompressedaudiodata.MP3lesmustbe
in MPEG 1 Audio Layer 3 format.
*2 Files with copyright protection (Digital Rights Management)
cannot be played back by the system.
*3 MPEG4lesmustberecordedinMP4leformat.Supported
video codec and audio codec are as follows:
 – Videocodec:MPEG4SimpleProle(AVCisnotsup-
ported.)
– Audio codec: AAC-LC (HE-AAC is not supported.)
Notes
• JIG
When disassembling the set, use the following jig (for front
panel removal).
 PartNo.:J-2501-238-AJIGFORSPEAKERREMOVAL
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MHC-V71/V71D
5
MODEL IDENTIFICATION
– Rear View –
MODEL NUMBER LABEL
MODEL NO. : MHC-V71D
R
Destination Code
PART No.
4-729-109-11 E4/E12
E4, E12, AUS
MODEL NO. : MHC-V71D
R
Destination Code
PART No.
4-735-269-02 BR1
BR
RU, AR, EA, LA9, MY
MODEL NO. / MODELO : MHC-V71D
R
Destination Code
PART No.
4-729-115-12 LA9
AEP, UK
MODEL NO. : MHC-V71D
R
Destination Code
PART No.
4-729-110-12 CEL/CEK
US, CND
MODEL NO. : MHC-V71
R
Destination Code
PART No.
4-729-110-12 CEL/CEK
Model Part No.
V71D: AR 4-729-108-1[]
V71D: E4 4-729-109-1[]
V71D: E12 4-729-109-3[]
V71D: AEP, UK 4-729-110-1[]
V71D: EA 4-729-112-1[]
V71D: MY 4-729-113-1[]
V71D: LA9 4-729-115-1[]
V71D: RU 4-729-116-1[]
V71D: AUS 4-729-117-0[]
V71D: BR 4-735-269-0[]
V71: US, CND 4-729-111-0[]
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
• Abbreviation
AR : Argentina model
AUS : Australian model
BR : Brazillian model
CND : Canadian model
E4 : African model
E12 : 220-240 V AC area in E model
 EA :SaudiArabiamodel
LA9 : Latin-American model
MY : Malaysia model
RU : Russian model
Note: Refer to supplement-1 for adding servicing notes
“DESTINATION SETTING METHOD” when the
completeMOTHERBOARDboardisreplaced.
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MHC-V71/V71D
6
Protect Type Description:
X (Error Code) Description
2 Defect of thermistor IC or charging circuit
used by SPM (Sound Pressure Management)
system.
3 Power supply over current.
or
DC appears in SP terminal by defect of AMP
IC.
or
Unusual heat up of AMP IC by improper as-
sembly of heat sink.
6 Defect of DC FAN and DC FAN driver circuit.
NOTE OF REPLACING THE IC2002 ON THE MOTH-
ERBOARD BOARD AND THE COMPLETE MOTHER-
BOARD BOARD
When IC2002 on the MOTHERBOARD board and the complete
MOTHERBOARD board are replaced, it is necessary to spread the
compound between parts and heat sink.
Afterthat,execute“3.ICandMOTHERBOARDboardafterre-
pair checking guide” (page 31).
Part No. Description
7-300-009-67 THERMAL COMPOUND (TIG2000)
Spreadthecompoundreferringtothegurebelow.
– MOTHERBOARD Board (Component Side) –
IC2002
thermal compound (TIG2000)
NOTE OF REPLACEMENT OF THE SENSOR BOARD
WhentheSENSORboardis defective,exchange theSERVICE,
TOP PANEL ASSY.
NOTE OF REPLACEMENT OF THE MS-476 BOARD
When the MS-476 board is defective, exchange the entire
LOADING COMPLETE ASSY (T).
TEST DISCS
UsefollowingTESTDISCwhenthisunitconrmstheoperation
and checks it.
• ForCD
Part No. Description
3-702-101-01 DISC (YEDS-18), TEST
4-225-203-01 DISC (PATD-012), TEST
J-2501-307-A DISC(HLX-A1),TEST
• ForDVDSL(SingleLayer)
Part No. Description
J-6090-069-A DISC(HLX-503),TEST(NTSC)
J-6090-088-A DISC(HLX-504),TEST(NTSC)
J-2501-305-A DISC(HLX-513),TEST(NTSC)
J-6090-077-A DISC(HLX-506),TEST(PAL)
• ForDVDDL(DoubleLayer)
Part No. Description
J-6090-071-A DISC(HLX-501),TEST(NTSC)
J-6090-089-A DISC(HLX-505),TEST(NTSC)
J-2501-306-A DISC(HLX-514),TEST(NTSC)
J-6090-078-A DISC(HLX-507),TEST(PAL)
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of sample disc in the
shop is equipped.
It can release the lock function in the following procedure.
Releasing Procedure:
1. Press the [1] button to turn the power on.
2. Touch the [FUNCTION] touch key to turn the DVD/CD func-
tion.
3. Touch [MEGA BASS] and [VOCAL FADER] touch keys
simultaneously for three seconds.
4. The message “UNLOCKED” is displayed on the screen
display panel and the disc tray is unlocked.
Note:When “LOCKED” is displayed on the screen display panel, the
disc tray lock is not released by turning the power on/off with the
[1] button.
IF “PROTECTX” (X IS A NUMBER)
AND “CHECK MANUAL” FLASHES
ON THE DISPLAY
Immediately unplug the AC
power cord (mains lead), and
checkifanythingisblockingthe
ventilation openings of the unit.
After you have checked and
foundnoproblems,reconnect
the AC power cord (mains lead),
and turn on the system. If the
issue persists, contact your
nearest Sony dealer.
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MHC-V71/V71D
7
HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF
Note 1: After the side panel L, R are removed, this work is done.
Note 2: Please prepare the thin wire (clip etc. processed to the length of 8 cm or more).
CD/DVD
mechanism deck
8 cm or more
Note: Push after it inserts it
in this hole well.
– Top view –
tray
– Left view –
hole
Insert the clip etc. processed to the
length of 8 cm or more in the hole
on the side of the CDM and push.
2Insert the clip etc.
1Remove side panel L, R.
(Illustration of disassembly is omitted.)
3
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MHC-V71/V71D
8
CAPACITOR DISCHARGE FOR ELECTRIC SHOCK PREVENTION
SMPS Board (Conductor side view)
In checking the SMPS board, make 4 capacitors discharge of C6301, C6322, C6505 and C6506 for eletrical shock prevention.
SERVICE POSITION
R
R
C6322
C6301
C6505
R
C6506
800 Ω/5 W
800 Ω/5 W
800 Ω/5 W
R
800 Ω/5 W
CDM90-DVBU204//M
panel, top (vanilla) section
stand
MIC USB board
NFC board
VFD board
POWER KEY board
SMPS board
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MHC-V71/V71D
9
SECTION 2
DISASSEMBLY
2-11. FRONT PANEL (VANILLA)
SECTION
(Page 19)
2-12. LOUDSPEAKER (320MM)-266-11
(WOOFER) (SP5)
(Page 20)
2-13. LOUDSPEAKER
(120MM)-270-11
(MID: L-CH) (SP1),
LOUDSPEAKER
(120MM)-270-11
(MID: R-CH) (SP3)
(Page 21)
2-10. SMPS BOARD, CHASSIS
SECTION
(Page 18)
SET
2-3. LOADING PANEL ASSY
(Page 11)
2-4. TOP PANEL (VANILLA) SECTION
(Page 12)
2-5. REAR COVER,
VENTILATION COVER
(Page 13)
2-2. SIDE PANEL L, R
(Page 10)
2-6. BACK PANEL SECTION
(Page 14)
2-7. CDM SECTION
(Page 15 )
2-8. SERVICE, OPTICAL DEVICE (7G),
FLEXIBLE FLAT CABLE
(Page 16)
2-9. MOTHERBOARD BOARD
(Page 17)
2-14. BOTTOM COVER SECTION
(Page 22)
Note: Disassembletheunitintheorderasshownbelow.
2-1. DISASSEMBLY FLOW
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MHC-V71/V71D
10
Note: Followthedisassemblyprocedureinthenumericalordergiven.
2-2. SIDE PANEL L, R
1three screws
(tapping (flat head))
3boss
4Remove the panel, side R
in the direction of the arrow.
4Remove the panel, side L
in the direction of the arrow.
5panel, side L
2two screws
(tapping (flat head))
1three screws
(tapping (flat head))
2two screws
(tapping (flat head))
3boss
3boss
3boss
5panel, side R
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MHC-V71/V71D
11
2-3. LOADING PANEL ASSY
CD/DVD mechanism
deck
8 cm or more
Note: Push after it inserts it
in this hole well.
– Left view –
hole
– Top view –
tray
2Draw out the tray.
4panel, loading
assy
3three claws
Insert the clip etc. processed to the
length of 8 cm or more in the hole
on the side of the CDM and push.
1Insert the clip etc.
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MHC-V71/V71D
12
2-4. TOP PANEL (VANILLA) SECTION
2one screw
(+BVTP 3 x 8)
3flexible flat cable
(29 core) (CN126)
q; CN451 (5P)
9flexible flat cable
(9 core) (CN902)
4flexible flat cable
(7 core) (CN120)
– Front view –
qa three screws
(tapping
(flat head))
qd panel, top (vanilla) section
qs Remove the panel, top (vanilla) section
in the direction of the arrow.
5filament tape
Note 2: When installing the flexible flat cable, ensure that the
colored line is not slanted after insertion.
colored line colored line
Insert is straight to the interior. Insert is incline
flexible flat
cable
flexible flat
cable
connectorconnector
OK NG
Note 3: 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
6flexible flat cable
(17 core) (CN5001)
1two screws
(tapping
(flat head))
8cushion (7T25), saranet
7Draw out the flexible
flat cable from the
hook.
Note 1: Make sure
the flexible
flat cable
(17 core)
must not
near to the
bluetooth
module.
• Wire setting
flexible flat cable
(7 core) (CN120)
filament tape
flexible flat cable
(29 core) (CN126)
• Wire setting
cushion (7T25),
saranet
hook
filament
tape
flexible flat cable
(17 core)
(CN5001)
chassis
bracket, CDM
top side
bluetooth module
top side
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MHC-V71/V71D
13
2-5. REAR COVER, VENTILATION COVER
– Rear view –
2cover, screw L
3one screw
(+BVTP 3 x 8)
6cover, rear
2cover, screw R
3one screw
(+BVTP 3 x 8)
4three screws
(4 x 13)(TR-184A)
5three screws
(+BVTP 3 x 8)
7four screws
(+BVTP 3 x 8)
9cover, ventilation
8Remove the cover, ventilation
in the direction of the arrow.
1Insert the clip etc.
1Insert the clip etc.
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MHC-V71/V71D
14
2-6. BACK PANEL SECTION
(V71D)
– Rear view –
7claw
1CN2021
(6P)
8Remove the panel, back section
in the direction of the arrow.
2two screws
(+BVTP 3 x 8)
6one screw
(+BVTP 3 x 8)
4 two screws
(+BVTP 3 x 8)
5one screw
(+B 3 x 6)
7claw
6two screws
(+BVTP 3 x 8)
6one screw
(+BVTP 3 x 8)
panel, back section
9
3Flip the cover, jack in the
direction of arrow.
• Wire setting
rear side
MOTHERBOARD boardpanel, back section
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
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MHC-V71/V71D
15
2-7. CDM SECTION
– Rear view –
• Wire setting
rear side
CDM section
MOTHERBOARD board
filament tape
Note 1: When installing the flexible flat cable, ensure that the
colored line is not slanted after insertion.
colored line colored line
Insert is straight to the interior. Insert is incline
flexible flat
cable
flexible flat
cable
connectorconnector
OK NG
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
3flexible flat cable
(5 core) (CN303)
2flexible flat cable
(24 core) (CN302)
8four screws
(+BVTP 3 x 8)
9CDM90-DVBU204//M
qs claw
7Remove the CDM
section in the direction
of the arrow.
1CN402 (4P)
qs claw
q; four screws
(step screw M2.6)
qs claw
qf bracket, CDM
qd loading base
6two screws
(+BVTP 3 x 12)
qa four screws
(screw (S), float)
4filament tape
qs claw
• Wire setting
5Remove the connector and
two flexible flat cables
from hook.
bracket,
CDM
hook
rear side
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MHC-V71/V71D
16
2-8. SERVICE, OPTICAL DEVICE (7G), FLEXIBLE FLAT CABLE
7four insulator screws
9connector
qa insulator
6belt
3Insert the thin
wire (clip etc.).
5tray
qs service,
optical device (7G)
qa insulator
qa insulator
qg
qk flexible flat cable
(24 core)
1 six claws
4
0
8
2chuck holder assy (T)
qf filament tape
– Bottom view –
loading assy (T)
qd loading base assy
qj holder, FFC
Under the guide
Under the guide
(Fold area)
• Installation of flexible flat cable (24 core) and flexible flat cable (5 core)
Note: This illustration sees the loading assy (T) from bottom side.
1flexible flat cable (24 core)
2Through the hole
3Through the hole
4
terminal face
loading assy (T)
7flexible flat cable
(24 core)
6holder, FFC
5three claws
5two claws
8flexible flat cable
(5 core)
qh flexible flat cable
(5 core)
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MHC-V71/V71D
17
2-9. MOTHERBOARD BOARD
Note 1: When the complete MOTHERBOARD board
isreplaced,besuretoreferto“DESTINATION
SETTING METHOD” on supplement-1.
Ver. 1.1
qh MOTHERBOARD
board
qd CN2206 (8P)
3CN127 (3P)
q; CN001 (10P)
chassis section
7fan, DC 6bracket, fan
qs CN3001 (2P)
qf six screws (+PWH 3 x 8 (SUMITITE))
Note 3 : 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
4two screws
(+BVTP 3 x 8)
1CN2001 (2P)
qk heat sink (MB-L) (VANILLA)
Note 2:
When installing the heat sink (MB-L) (VANILLA),
spread the compound referring to
“NOTE OF REPLACING THE IC2002 ON THE
MOTHERBOARD BOARD AND THE
COMPLETE MOTHERBOARD BOARD”
on servicing notes (page 6).
5two screws
(+BVTP 3 x 8)
qg clamp (N)
qj two screws
(+BVTP 3 x 8)
qa CN2007 (8P)
qg clamp (N)
front
side
MOTHERBOARD board
• Wire setting
hooks fan, DC
2Draw out the wires from fan unit.
SMPS board (EA, BR, AR,
LA9, E12) / SMPS (EMC)
board (US, CND, AEP, UK,
RU, MY, AUS, E4)
front side
MOTHERBOARD
board
• Wire setting
8Remove the cushion (CZ) from chassis.
MOTHERBOARD board
front side
chassis
• Wire setting
9Remove the wires from clamp (N).
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MHC-V71/V71D
18
2-10. SMPS BOARD, CHASSIS SECTION
8four screws
(step screw M4)
9chassis
7acoustic tape
2himelon 45
6SMPS board
(EA, BR, AR, LA9, E12) /
SMPS (EMC) board
(US, CND, AEP, UK, RU,
MY, AUS, E4)
5six screws
(+PWH 3 x 8 (SUMITITE))
1CN6000 (2P)
3core, ferrite
(US, CND, AEP, UK, RU,
MY, AUS, E4)
SMPS (EMC) board
(US, CND, AEP, UK, RU, MY, AUS, E4)
top side
chassis
• Wire setting
himelon 45
core, ferrite
4CN6500 (8P)
(US, CND, AEP,
UK, RU, MY,
AUS, E4)
(US, CND, AEP,
UK, RU, MY,
AUS, E4)
acoustic tape front side
chassis
• Wire setting
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
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MHC-V71/V71D
19
2-11. FRONT PANEL (VANILLA) SECTION
1three screws
(+ flat tapping
screw - ED BK)
4sound generator 12cm
5three screws
(+ flat tapping
screw - ED BK)
9three screws
((4x13)(TR-184A))
2seven claws
6seven claws
8sound
generator 12cm
– Front view –
qa Insert the jig into a space and
slowly remove the panel, front
(vanilla) section.
Note 1: When using a jig, please
work so as not to injure
panel, front (vanilla)
section and speaker
cabinet.
qh panel, front (vanilla) section
Note 2: When installing the
panel, front (vanilla)
section, remove the used
glue and use a new glue to
fix the panel, front
(vanilla).
qs All bosses are removed while moving jig in the
direction of the arrow, and panel, front (vanilla)
section is removed.
qs All bosses are removed while moving
jig in the direction of the arrow, and
panel, front (vanilla) section is removed.
qg Remove the
panel, front
(vanilla)
section in the
direction
of an arrow.
q; Insert the jig into a space
and slowly remove the
panel, front (vanilla) section.
Note 1: When using a jig,
please work so as
not to injure
panel, front (vanilla) section
and speaker cabinet.
3 Slide out to remove the sound
generator 12cm in the direction
of the arrow.
7 Slide out to remove the
sound generator 12cm
in the direction of the arrow.
total seventeen bosses
• Wire setting
top side
qf Push the protrusion,
and remove the
terminal (wide side) [red].
qf Push the protrusion, and
remove the terminal
(narrow side) [red/black]. protrusion
• Wire setting top side
qd Push the protrusion, and remove
the terminal (narrow side) [blue/black].
qd Push the protrusion, and
remove the terminal (wide side) [blue].
protrusion
loudspeaker
(5cm) (SP2)
loudspeaker
(5cm) (SP4)
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MHC-V71/V71D
20
2-12. LOUDSPEAKER (320MM)-266-11 (WOOFER) (SP5)
4loudspeaker (320mm)-266-11 (woofer) (SP5)
1eight screws
((4X16), +BV TAPPING)
2Remove the loudspeaker (320mm)-266-11
(woofer) (SP5) in the direction of the arrow.
terminal
(narrow side) [black]
terminal
(wide side)
[grey]
• Wire setting
protrusion
top side
3Push the
protrusion,
and remove
the terminal
(wide side) [grey].
3Push the protrusion, and remove
the terminal (narrow side) [black].
– Front view –
loudspeaker
(320mm)-266-11
(woofer) (SP5)
loudspeaker (320mm)-266-11
(woofer) (SP5)
terminal position
• Installation direction for the loudspeaker
(320MM)-266-11 (woofer) (SP5)
Ver. 1.1
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