Sony MHC-V82D Schematic

2019/03/1322:12:27(GMT+09:00)

MHC-V82D

SERVICE MANUAL

Ver. 1.0 2019.02

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 aﬀ ected unit was found during service, contact your Service Headquarters.

AEP Model

E Model

Model Name Using Similar Mechanism MHC-V81D

DVD Mechanism Type CDM90-DVBU204//M

Optical Pick-up Name CMS-S76RFS7GP

Speaker section

Speaker system: 5-way, Double Bass Reﬂ ex Speaker unit: Tweeter L/R Front: 50 mm, cone type Tweeter L/R Rear: 50 mm, cone type Midrange L/R (Upper): 100 mm, cone type Midrange L/R (Lower): 120 mm, cone type Woofer: 300 mm, cone type

Inputs

AUDIO/PARTY CHAIN IN (TV) L/R: Voltage 2 V, impedance 24 kilohms TV (ARC): 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 HDMI OUT (TV) ARC: Supported audio signal: 2-channel Linear PCM (up to 48 kHz), Dolby Digital

HDMI section

Connector: Type A (19 pin)

Disc player section

System: Compact disc and digital audio and video system

SPECIFICATIONS

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: Latin American models: 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 (50 kHz step)

BLUETOOTH section

Communication system: BLUETOOTH Standard version 4.2 Output: BLUETOOTH Standard Power Class 2 Maximum output power: <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

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 (Audio Video Remote Control Profile) SPP (Serial Port Profile) Supported codecs: SBC (Subband Codec) AAC (Advanced Audio Coding) LDAC

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.

BLUETOOTH standard profiles

indicate the purpose of BLUETOOTH communication between devices.

NFC section

Frequency band:

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

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 models) 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 models) Audio codec: AAC-LC (HE-AAC is

not compatible.)

DRM: Not compatible

General

Power requirements: AC 120 V – 240 V, 50/60 Hz Power consumption: 190 W Power consumption (at the Power Saving

mode):

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 × 1,060 mm × 427 mm Mass (Approx.):

26.0 kg

Operating temperature: 5 °C to 35 °C

– Continued on next page –

9-930-600-01

2019B80-1

2019.02

HOME AUDIO SYSTEM

Sony Corporation

Published by Sony EMCS (Malaysia) PG Tec

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MHC-V82D

* 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-V82D) (1)

•

Remote control (DC 3 V) (1)

• R03 (DC 1.5 V) (size AAA) batteries (2)

• FM lead antenna (aerial) (1)

• AC power cord (mains lead) (1)

• AC plug adaptor* (1) (supplied only for certain areas)

* This plug adaptor is not for the use in

Chile, Paraguay and Uruguay. Use this plug adaptor in the countries/regions 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 Corporation.

• 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 HighDefinition 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 logos are registered trademarks owned by the 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.

• Apple, the Apple logo, iPhone, iPod, 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., 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.

word mark and

• 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. ADDITIONAL 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

specified.

marks are not

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.

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)

To Exposed Metal Parts on Set

1.5 kΩ0.15 μF

voltmeter (0.75 V)

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

SAFETY-RELATED COMPONENT WARNING!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON 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.

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MHC-V82D

1. SERVICING NOTES ............................................. 4

2. DISASSEMBLY

2-1. Disassembly Flow ........................................................... 10

2-2. Side panel L, R ................................................................ 11

2-3. Loading Panel Assy ........................................................ 11

2-4. Vicente Top Panel Section .............................................. 12

2-5. Rear Cover ...................................................................... 13

2-6. CDM Section .................................................................. 14

2-7. CDM90-DVBU204//M ................................................... 15

2-8. Service, Optical Device (7G), Flexible Flat Cable ......... 16

2-9. SMPS Board (EMC) ....................................................... 17

2-10. MOTHERBOARD Board, Chassis Section .................... 18

2-11. Front Panel (Vicente) Section ......................................... 19

2-12. Bottom Cover Section ..................................................... 20

2-13. Loudspeaker (30cm) (Woofer) (SP9) .............................. 21

2-14. Loudspeaker (10cm) (Mid Top: L-CH) (SP2),

Loudspeaker (10cm) (Mid Top: R-CH) (SP6) ................ 22

2-15. Loudspeaker (12cm) (Mid Bottom: L-CH) (SP1),

Loudspeaker (12cm) (Mid Bottom: R-CH) (SP5) .......... 23

3. TEST MODE ............................................................ 24

4. ELECTRICAL CHECK ......................................... 25

5. TROUBLESHOOTING .......................................... 26

6. DIAGRAMS

6-1. Block Diagram

- RS SERVO, USB, TOUCH, HDMI Section - .............. 33

6-2. Block Diagram - MAIN Section - ................................... 34

6-3. Block Diagram - AMP Section - ..................................... 35

6-4. Block Diagram

- PANEL, POWER SUPPLY Section - ........................... 36

6-5. Block Diagram - SMPS Section - ................................... 37

6-6. Printed Wiring Board - MOTHERBOARD Board

(Component Side) - ......................................................... 39

6-7. Printed Wiring Board - MOTHERBOARD Board

(Conductor Side) - .......................................................... 40

6-8. Printed Wiring Board

- SENSOR Board (Component Side) - ........................... 41

6-9. Printed Wiring Board

- SENSOR Board (Conductor Side) - ............................. 42

6-10. Printed Wiring Board - SMPS Board (EMC) - ............... 43

6-11. Printed Wiring Board - VFD Board - .............................. 44

6-12. Printed Wiring Board - MIC USB Board - ..................... 45

6-13. Printed Wiring Board - POWER KEY Board -............... 46

6-14. Printed Wiring Board - HUB Board - ............................. 46

6-15. Printed Wiring Board - 360 FR L Board - ...................... 47

6-16. Printed Wiring Board - 360 FR R Board - ...................... 47

6-17. Printed Wiring Board - 360 BACK L Board - ................ 48

6-18. Printed Wiring Board - 360 BACK R Board - ................ 48

6-19. Printed Wiring Board - SPK MID BTM Board - ............ 49

6-20. Printed Wiring Board - NFC Board - .............................. 49

6-21. Printed Wiring Board - EXTENSION 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. Panel Loading Section .................................................... 52

7-3. Rear Cover Section ......................................................... 53

7-4. SMPS Board (EMC) Section .......................................... 54

7-5. Chassis Section ............................................................... 55

7-6. Front Panel (Vicente) Section ......................................... 56

7-7. Bottom Cover Section ..................................................... 57

7-8. Loudspeaker Section ....................................................... 58

7-9. Speaker Cabinet Section ................................................. 59

7-10. Vicente Top Panel Section .............................................. 60

7-11. CDM Section .................................................................. 61

7-12. DVD Mechanism Section (CDM90-DVBU204//M) ...... 62

8. ELECTRICAL PARTS LIST .............................. 63

Accessories are listed in the last part of the electrical parts list.

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MHC-V82D

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 ﬂ 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 speciﬁ ed herein may result in hazardous radiation exposure.

MODEL IDENTIFICATION

– Rear view –

MODEL NUMBER LABEL

AEP, RU, LA9, AR, MY, EA

MODEL NO. :

MHC-V82D

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suﬀ er electrostatic break-down because of the potential diﬀ erence 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 ﬂ 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 reﬂ 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.

CAUTION

The use of optical instruments with this product will increase eye hazard.

For customers in AEP

This appliance is classiﬁ ed as a CLASS 1 LASER product under IEC 60825-1:2007 and IEC 60825-1:2014. This marking is located on the rear exterior.

For customers in EA

This appliance is classiﬁ ed as a CLASS 1 LASER product under IEC 60825-1:2007 and IEC 60825-1:2014. This marking is located on the rear exterior.

CAUTION

Risk of explosion if the battery is replaced by an incorrect type.

E4, E12

Destination Code PART No.

MODEL NO. :

Destination Code

PART No.

Destination Code PART No.

MHC-V82D

MODEL NO. :

MHC-V82D

Do not expose batteries or appliances with battery-installed to excessive heat, such as sunshine and ﬁ re.

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MHC-V82D

Model Part No.

LA9

AEP

E12

4-746-522-0[]

4-747-800-0[]

4-747-979-0[]

4-747-979-2[]

4-747-981-0[]

4-748-006-0[]

4-748-008-0[]

4-748-011-0[]

4-748-016-0[]

DESTINATION ABBREVIATIONS

The following abbreviations for model destinations are used in this service manual.

• Abbreviation AR : Argentina 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 TH : Thai model

DESTINATION SETTING METHOD

The destination information isn’t written in the MOTHERBOARD board for the service. Therefore, when the MOTHERBOARD board is replaced, be sure to perform the destination setting (Important work).

Note 1: The initial setting destination of the MOTHERBOARD board for

the service is temporary set as “LATIN”. The message “DEST ERR” is displayed on the screen display panel.

Note 2: When distinguishing the destination of the product, refer to the

“MODEL IDENTIFICATION” on page 4.

Note 3: If destination setting isn’t performed, it is possibility to occur the

defect to each operation of this unit.

Note 4: Destination would be locked if it has changed for 5 times.

Procedure:

1. Touch two touch keys of the [SOUND FIELD] and [TUNING

+ >] simultaneously for 5 seconds during the demo mode.

2. It enters the destination setting mode, the message “D XXXXX” is displayed on the screen display panel.

Note 5: If the message “DESTLOCK” is displayed on the screen display

panel, touch the [N] touch key to release from this mode. Because the destination is locked, and it cannot change the destination.

3. Touch [ +] / [ ―] touch key to select the destination based on the set’s country.

Screen display

Destination code

Country

“D ASIA” SP6, TH1 Southeast Asia countries

“D INDIA

“D ME AFC

” E12 India

” E3, E93, E4,

Middle East & Africa countries

SA2, EA3

“D OCEANI

” AU1 Australia & New Zealand

“D JAPAN” J1 Japan

“D BRAZIL” BR1 Brazil

“D N AME” UC2, CA2 America & Canada

“D LATIN” LA9, AR2 Central & South America

countries (except Brazil)

“D RUSSIA” RU1 Russia & CIS country

“D EUROPE

” CEL, CEK Europe countries

(except CIS country)

4. Touch [N] touch key to conﬁ rm the selection.

5. “RESET” appears on the screen display panel. After that, “SONY” appears on the screen display panel. The system automatically turn on and oﬀ once. Please be sure that the system stay at demo mode ﬁ nally before switch oﬀ the power supply.

6. Mode in “MODEL, DESTINATION AND VERSION DISPLAY MODE” on page 24 again to conﬁ rm on the model & destination.

NOTE OF REPLACEMENT OF THE SENSOR BOARD

When the SENSOR board is defective, exchange the VICENTE TOP PANEL ASSY SERVICE.

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 conﬁ 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 select the DVD/CD function.

3. Touch [MEGA BASS] touch key and [VOCAL FADER] touch key 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.

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MHC-V82D

IF ERROR CODE AND “CHECK MANUAL” FLASHES ON THE DISPLAY

See the following table for the corrective action.

Error code Corrective action

“PROTECT2” Contact your nearest Sony dealer.

“PROTECT3”/ “PROTECT4”/ “PROTECT6”

Protect Type Description:

X (Error Code) Description

2 Defect of thermistor IC or charging circuit

3 • There is possibility of over current hap-

4 or 6 • There is possibility of DC FAN is blocked

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.

used by SPM (Sound Pressure Management) system.

pen at speaker output or speaker damage (shorted).

• Unusual heat up of AMP IC by improper assembly of heatsink or lack of thermal compound.

• Under voltage Protection (no supply to AMP IC when power ON).

• DC appears in SP terminal by defect of AMP IC.

or damaged.

• Defect of DC FAN driver circuit.

NOTE OF REPLACING THE IC2002 AND IC3503 ON THE MOTHERBOARD BOARD AND THE MOTHERBOARD MOUNTED PC BOARD

When IC2002 and IC3503 on the MOTHERBOARD board and the MOTHERBOARD mounted pc board are replaced, it is necessary to spread the compound between parts and heat sink. After that, execute “3. IC and MOTHERBOARD board after replace checking guide” in page 31.

Spread the compound referring to the ﬁ gure below.

– MOTHERBOARD Board (Component Side) –

compound

IC3503

IC2002

SELF-DIAGNOSIS FUNCTION

When the self-diagnosis function is activated, a service number appears on the TV screen or the display. The service number consists of an alphabet and numerals (e.g. C 13 50). See the following table for the cause and corrective action.

First 3 characters of the service number

C 13 This disc is dirty.

C 31 The disc is not inserted correctly.

E XX (XX is a number)

Cause and corrective action

• Clean the disc with a soft cloth.

• Turn oﬀ the system, then turn it on again.

Then re-insert the disc correctly.

To prevent a malfunction, the system has performed the self-diagnosis function.

• Contact your nearest Sony dealer or local authorized Sony service facility and give the 5-character service number.

Example: E 61 10

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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 5 cm or more).

1 Remove the side panel L, R. (Illustration of disassembly is omitted.)

MHC-V82D

– Left view –

Insert the clip etc. processed to the length of 5 cm or more in the hole on the side of the CDM and push.

5 cm or more

Note: Push after it inserts it

in this hole well.

hole

DVD mechanism deck

tray

– Top view –

2 Insert the clip etc.

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MHC-V82D

CAPACITOR ELECTRICAL DISCHARGE PROCESSING

When removing the SMPS board (EMC) and MOTHERBOARD board, be sure to perform the discharge process by referring below procedure. Remove SMPS board (EMC) ﬁ rst follow by MOTHERBOARD board.

Note: Be sure to discharge using a resistor of 500~800 .

SMPS Board (EMC) (Conductor Side view)

1. Disconnect all the wires and FFC which connected to the SMPS board (EMC) (avoid touching any component).

2. Unscrew the SMPS board (EMC).

3. Pulling up the wire (avoid touching any component) to lift up the SMPS board (EMC).

4. Flip the SMPS board (EMC) to conductor side and perform discharge at terminal of C6301, C6322, C6534, C6558 and C6559 for 10 seconds each.

800 :/5 W

C6559

C6558

C6534

C6301

800 :/5 W

C6322

MOTHERBOARD Board (Conductor Side view)

1. Disconnect all the wires and FFC which connected to the MOTHERBOARD board (avoid touching any component).

2. Unscrew the MOTHERBOARD board.

3. Holding the both edge (avoid touching any component) to lift up the MOTHERBOARD board.

4. Flip the MOTHERBOARD board to conductor side and perform discharge at terminal of C2133 and C3662 for 90 seconds each.

800 :/5 W

C2133

C3662

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SERVICE POSITION

MHC-V82D

MIC US B board

VFD board

stand

POWER K E Y board

SMPS board (EMC)

CDM90-DVBU204//M

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MHC-V82D

Note: Disassemble the unit in the order as shown below.

2-1. DISASSEMBLY FLOW

SET

2-2. SIDE PANEL L, R (Page 11)

2-3. LOADING PANEL ASSY (Page 11)

2-4. VICENTE TOP PANEL SECTION (Page 12)

SECTION 2

DISASSEMBLY



JIG When disassembling the unit, use the following jig for speaker removal.

Part No. Description J-2501-238-A JIG FOR SPEAKER REMOVAL

2-5. REAR COVER (Page 13)

2-6. CDM SECTION (Page 14)

2-7. CDM90-DVBU204//M (Page 15)

2-8. SERVICE, OPTICAL DEVICE (7G), FLEXIBLE FLAT CABLE (Page 16)

2-9. SMPS BOARD (EMC) (Page 17)

2-10. MOTHERBOARD BOARD, CHASSIS SECTION (Page 18)

2-11. FRONT PANEL (VICENTE) SECTION (Page 19)

2-12. BOTTOM COVER SECTION (Page 20)

2-13. LOUDSPEAKER (30CM) (WOOFER) (SP9) (Page 21)

2-14. LOUDSPEAKER (10CM) (MID TOP: L-CH) (SP2), LOUDSPEAKER (10CM) (MID TOP: R-CH) (SP6) (Page 22)

2-15. LOUDSPEAKER (12CM) (MID BOTTOM: L-CH) (SP1), LOUDSPEAKER (12CM) (MID BOTTOM: R-CH) (SP5) (Page 23)

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Note: Follow the disassembly procedure in the numerical order given.

2-2. SIDE PANEL L, R

1 five screws (tapping (flat head))

MHC-V82D

3 panel, side L

3 panel, side R

2-3. LOADING PANEL ASSY

– Left view –

Insert the clip etc. processed to the length of 5 cm or more in the hole on the side of the CDM and push.

1 five screws (tapping (flat head))

3 four claws

4 panel, loading

assy

hole

DVD mechanism deck

5 cm or more

Note: Push after it inserts it

in this hole well.

2 Draw out the tray.

1 Insert the clip etc.

tray

– Top view –

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MHC-V82D

2-4. VICENTE TOP PANEL SECTION

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Push the protrusion, and remove the terminal (wide side) [grey].

loudspeaker (5cm)

top side

Push the protrusion, and remove the terminal (narrow side) [grey/black].

9 flexible flat cable (17 core) (CN5001)

1 two screws (tapping (flat head))

(tweeter) (L-CH)

(SP4)

protrusion

5 flexible flat cable (7 core) (CN120)

qd terminal (narrow side) [grey/black]

qd terminal (wide side) [grey]

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qg VICENTE top panel section

top side

filament tapeSENSOR board

4 flexible flat cable

(29 core) (CN126)

0 CN451 (5P)

3 one screw

(+BVTP 3 u 8) (SILVER)

qs Remove the VICENTE top panel section in the direction of the arrow.

qa flexible flat cable (9 core) (CN902)

2 three screws (tapping (flat head))

qf terminal (wide side) [red]

qf terminal (narrow side) [red/black]

6 filament tape

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filament tape

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Push the protrusion, and remove the terminal (wide side) [red].

loudspeaker (5cm) (tweeter) (R-CH) (SP8)

top side

protrusion

Push the protrusion, and remove the terminal (narrow side) [red/black].

top side

:LUHVHWWLQJ

filament tape

top side

HUB board

8 cushion (7T25), saranet

7 Draw out the flexible

flat cable (17 core) from the hook.

cushion (7T25), saranet

Note: Make sure the flexible flat cable (17 core)

must not near to the bluetooth module.

hook

bracket, CDM

bluetooth module

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2-5. REAR COVER

MHC-V82D

6 three screws (+BVTP 3 u 8) (BLACK)

7 cover, rear

2 cover, screw R

1 Insert the clip etc.

3 one screw (+BVTP 3 u 8)

(BLACK)

4 two screws (tapping (flat head))

5 three screws

– Rear view –

(4 u 13) (TR-184A)

3 one screw (+BVTP 3 u 8) (BLACK)

2 cover, screw L

1 Insert the clip etc.

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MHC-V82D

2-6. CDM SECTION

1 filament tape

:LUHVHWWLQJ

rear side

filament tape

CDM section

6 flexible flat cable (24 core) (CN302)

7 two screws (+BVTP 3 u 12)

hook

0 CDM section

3 CN2001 (2P)

9 Remove the CDM section

in the direction of the arrow.

5 flexible flat cable (5 core) (CN303)

4 CN402 (4P)

8 two screws

(+BVTP 3 u 8) (BLACK)

2 Remove wire from the hook.

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2-7. CDM90-DVBU204//M

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rear side

MHC-V82D

bracket, CDM

1 four screws (+BVTP 3 u 8) (SILVER)

6 CDM90-DVBU204//M

5 Remove three wires from

the hook.

4 filament tape

CDM90-DVBU204//M

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2 cushion, saranet (30 u 50)

3 core, ferrite

hook

filament tape

7 bracket, CDM section

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MHC-V82D

2-8. SERVICE, OPTICAL DEVICE (7G), FLEXIBLE FLAT CABLE

1 six claws

2 chuck holder assy (T)

qa insulator

7 four insulator screws

qg flexible flat cable

qs service, optical

device (7G)

qa insulator

6 belt

3 Insert the thin

wire (clip etc.).

qd base, lo assy

5 tray

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This illustration sees the loading assy (T) from bottom side.

Note:

5 two claws

1 flexible flat cable

loading assy (T)

(24 core)

3 Through the hole

9 connector

(5 core)

qa insulator

5 three claws

qf filament tape

qj holder, FFC

qk flexible flat cable

(24 core)

loading assy (T)

– Bottom view –

6 holder, FFC

terminal face

2 Through the hole

Under the guide (Fold area)

7 flexible flat cable (24 core)

9 filament tape

8 flexible flat cable

(5 core)

Under the guide

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2-9. SMPS BOARD (EMC)

6 two screws (+BVTP 3 u 8) (SILVER)

:LUHVHWWLQJ

IR board

front side

1 Remove the wire from the hook.

DC fan

2 CN2008 (3P)

qh three screws

(+PWH 3 u 8 (SUMITITE))

qh one screw

(+PWH 3 u 8 (SUMITITE))

0 cushion (CZ)

qs CN001 (11P)

qh two screws

(+PWH 3 u 8 (SUMITITE))

9 DC fan

qj clamp (N)

MHC-V82D

:LUHVHWWLQJ

qa Remove the wire from clamp (N).

cushion (CZ)

front side

filament tape

MOTHERBOARD board

hook

7 two screws (+BVTP 3 u 8) (SILVER)

4 filament tape

5 CN127 (3P)

8 bracket,

fan

3 Remove the wire from the hook.

qk SMPS

board (EMC)

qg CN6000 (2P)

SMPS board (EMC)

MOTHERBOARD board

qf CN6500 (8P)

qd Remove the wire

from clamp (N).

– Rear view –

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MHC-V82D

2-10. MOTHERBOARD BOARD, CHASSIS SECTION

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rear side

MOTHERBOARD board

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loudspeaker (5cm) (tweeter) (L-CH) (SP3)

5 Remove the wire from clamp (N).

Push the protrusion, and remove the terminal (wide side) [blue].

top side

9 one screw (+PWH 3 u 8 (SUMITITE))

0 clamp (N)

9 one screw

(+PWH 3 u 8 (SUMITITE))

0 clamp (N)

6 CN3501 (8P)

qk four step screws

ql chassis section

qs heat sink (MB-H)

Note 2: When you install the heat sink (MB-H), spread the compound

referring to “NOTE OF REPLACING THE IC2002 AND IC3503 ON THE MOTHERBOARD BOARD AND THE MOTHERBOARD MOUNTED PC BOARD” on servicing notes (page 6).

9 six screws (+PWH 3 u 8 (SUMITITE))

qd MOTHERBOARD

board

qa three screws (+BVTP 3 u 8)

(SILVER)

8 one screw (+B 3 u 6)

7 one screw (+BVTP 3 u 8)

(BLACK)

qh six screws (+BVTP 3 u 8)

(BLACK)

protrusion

Push the protrusion, and remove the terminal (narrow side) [blue/black].

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Push the protrusion, and remove the terminal (narrow side) [red/black].

loudspeaker (5cm) (tweeter) (R-CH) (SP7)

top side

qf terminal (wide side) [blue]

qf terminal (narrow side) [blue/black]

qg terminal (narrow side) [red/black]

qj panel, back section

1 acoustic

tape

1 acoustic tape

qg terminal (wide side) [red]

3 CN3502 (2P)

4 CN2005 (4P)

2 CN2206 (8P)

protrusion

Push the protrusion, and remove the terminal (wide side) [red].

Note 1: When the MOTHERBOARD mounted pc board

is replaced, be sure to refer to “DESTINATION SETTING METHOD” on page 5.

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2-11. FRONT PANEL (VICENTE) SECTION

1 three screws (+ flat tapping screw - ED BK)

6 All bosses are removed while moving jig in the direction of the arrow, and panel, front (VICENTE) section is removed.

5 Insert the jig into a space and slowly remove the panel, front (VICENTE) section.

Note 1: When using a jig, please work so as not to injure panel, front (VICENTE) section and speaker cabinet.

3 sound generator 10CM

4 one screw

(4 u 13) (TR-184A)

4 one screw (4 u 13) (TR-184A)

6 All bosses are removed while moving

jig in the direction of the arrow, and panel, front (VICENTE) section is removed.

4 one screw (4 u 13) (TR-184A)

MHC-V82D

3 sound generator 10CM

1 three screws

(+ flat tapping screw - ED BK)

5 Insert the jig into a space and slowly remove the panel, front (VICENTE) section.

Note 1: When using a jig, please work so as not to injure panel, front (VICENTE) section and speaker cabinet.

5 Insert the jig into a space and slowly remove the panel, front (VICENTE) section.

Note 1: When using a jig, please work so as not to injure panel, front (VICENTE) section and speaker cabinet.

8 panel, front (VICENTE) section

Note 2: When installing the panel, front

(VICENTE) section, remove the used glue and use a new glue to fix the panel, front (VICENTE).

7 Remove the panel, front (VICENTE) section in the direction of an arrow.

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MHC-V82D

2-12. BOTTOM COVER SECTION

4 All bosses are removed while moving jig in the direction of the arrow, and cover, bottom section is removed.

1 four screws (4 u 13) (TR-184A)

3 Insert the jig into a space and slowly remove the cover, bottom section.

Note 1: When using a jig, please work so as not to injure cover, bottom section and speaker cabinet.

3 Insert the jig into a space and slowly remove the cover, bottom section.

Note 1: When using a jig, please work so as not to injure cover, bottom section and speaker cabinet.

4 All bosses are removed while moving jig in the direction of the arrow, and cover, bottom section is removed.

1 two screws (4 u 13) (TR-184A)

3 Insert the jig into a space and slowly remove the cover, bottom section.

Note 1: When using a jig, please work so as not to injure cover, bottom section and speaker cabinet.

2 four screws (4 u 13) (TR-184A)

6 CN4500 (8P)

7 cover, bottom section

Note 2: When installing the cover,

bottom section, remove the used glue and use a new glue to fix cover, bottom.

– Rear view –

5 Remove the cover, bottom section in the direction of an arrow.

SYSSET

+ 46 hidden pages

Sony MHC-V82D Schematic

TABLE OF CONTENTS

SERVICING NOTES

2-1. DISASSEMBLY FLOW

DISASSEMBLY

2-2. SIDE PANEL L, R

2-3. LOADING PANEL ASSY

2-4. VICENTE TOP PANEL SECTION

2-5. REAR COVER

2-6. CDM SECTION

2-7. CDM90-DVBU204//M

2-8. SERVICE, OPTICAL DEVICE (7G), FLEXIBLE FLAT CABLE

2-9. SMPS BOARD (EMC)

2-10. MOTHERBOARD BOARD, CHASSIS SECTION

2-11. FRONT PANEL (VICENTE) SECTION

2-12. BOTTOM COVER SECTION