Sony MHC-V83D User manual

SERVICE MANUAL
Sony EMCS (Malaysia) PG Tec
9-930-605-01
2020F80-1
© 2020.06
MHC-V83D
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.
Conditions of Use:
(1) Please use this information only for the purpose of performing repair, maintenance and/or confi guration services of the Sony products (hereinafter the “Repair services”) under the
service agreement entered into with the Sony group company (hereinafter the “Service agreement”). Using this information for any purpose other than the purpose described foregoing
is forbidden.
(2) Only the Authorized Servicer’s offi cers, employees or subcontractors (including their offi cers and employees) whose duties justify a need-to-know and who have agreed to hold
confi dential this information (collectively hereinafter the “Permitted users”) are permitted to access and use this information. To disclose or disseminate to any person other than the
Permitted users is forbidden.
(3) Destroy or erase any and all portion of this information promptly in an irrecoverable and secure fashion after achieving the purpose described in Section (1) above.
(4) Do not copy, replicate, reproduce, alter, translate, transmit, sell, lease, or distribute this information in whole or in part without the prior written permission of the author.
(Notwithstanding foregoing, it is permitted to copy and distribute this information to the Permitted users.)
(5) Please notify immediately any leakage, loss, theft, misappropriation, or other misuse of this information by e-mail to the following address:
[email protected].com
(6) In addition to the above, the terms and conditions of the Service agreement shall be applied to using this information.
Revision of Information:
This information may be changed or updated at any time without any prior notice. Please confi rm that this information is up-to-date before using it.
Sony CONFIDENTIAL
For Authorized Servicer
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SERVICE MANUAL
Sony CONFIDENTIAL
For Authorized Servicer
HOME AUDIO SYSTEM
AEP Model
E Model
Ver. 1.0 2020.06
SPECIFICATIONS
– Continued on next page –
MHC-V83D
Speaker section
Speaker system:
5-way, Double Bass Refl ex
Speaker unit:
Tweeter L/R Front: 40 mm, horn type
Tweeter L/R Rear: 40 mm, horn type
Midrange L/R (Upper): 100 mm,
cone type
Midrange L/R (Lower): 80 mm,
horn type
Woofer: 300 mm, cone type
Inputs
(TV) AUDIO IN:
Voltage 2 V, impedance 47 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
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
Laser Diode Properties
Emission Duration: Continuous
Wavelength: 790 nm
Laser Output*: Less than 44.6 μW
* This output is the value measurement
at a distance of 100 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 (Except AEP model)
FM stereo, FM superheterodyne tuner
Antenna:
FM lead antenna (aerial)
Tuning range:
BR model:
76,0 MHz – 108,0 MHz (100 kHz step)
Other models:
87.5 MHz – 108.0 MHz (50 kHz step)
DAB/DAB+/FM tuner section
(AEP model)
Antenna:
DAB/FM lead antenna (aerial)
Frequency range:
DAB/DAB+ (Band-III): 174.928 (5A)
MHz – 239.200 (13F) MHz
FM: 87.5 MHz – 108.0 MHz
(50 kHz step)
DAB/DAB+ frequency table (Band-III)
Frequency Label
174.928 MHz 5A
176.640 MHz 5B
178.352 MHz 5C
180.064 MHz 5D
181.936 MHz 6A
183.648 MHz 6B
185.360 MHz 6C
187.072 MHz 6D
188.928 MHz 7A
190.640 MHz 7B
192.352 MHz 7C
194.064 MHz 7D
195.936 MHz 8A
197.648 MHz 8B
199.360 MHz 8C
201.072 MHz 8D
202.928 MHz 9A
204.640 MHz 9B
206.352 MHz 9C
208.064 MHz 9D
209.936 MHz 10A
211.648 MHz 10B
213.360 MHz 10C
215.072 MHz 10D
216.928 MHz 11A
218.640 MHz 11B
220.352 MHz 11C
222.064 MHz 11D
223.936 MHz 12A
225.648 MHz 12B
227.360 MHz 12C
229.072 MHz 12D
230.784 MHz 13A
232.496 MHz 13B
234.208 MHz 13C
235.776 MHz 13D
237.488 MHz 13E
239.200 MHz 13F
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 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 (Audio Video Remote
Control 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
Frequency band:
13.56 MHz
Model Name Using Similar Mechanism MHC-V82D
DVD Mechanism Type CDM90-DVBU204//M
Optical Pick-up Name CMS-S76RFS7GP
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MHC-V83D
3
Sony CONFIDENTIAL
For Authorized Servicer
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.
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.
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 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)
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:
195 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.):
428 mm × 1,051 mm × 370 mm
Mass (Approx.):
23.4 kg
Operating temperature:
5 °C – 35 °C
* 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”.
Supplied accessories (Except AEP model)
Remote control (RMT-AM420U)
(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.
Supplied accessories (AEP model)
Remote control (RMT-AM420U)
(DC 3 V) (1)
R03 (DC 1.5 V) (size AAA)
batteries (2)
DAB/FM lead antenna (aerial) (1)
AC power cord (mains lead) (2)
For the customers in AEP:
Use the AC power cord (mains lead) (A).
For safety reasons, the AC power cord
(mains lead) (B) is not intended for the
above countries/regions and shall therefore
not be used there.
For customers in other countries/regions:
Use the AC power cord (mains lead) (B).
(B)
(A)
Design and specifications are subject to
change without notice.
Compatible iPhone/iPod models
iPhone 11 Pro Max, iPhone 11 Pro, iPhone
11, iPhone XS Max, iPhone XS, iPhone XR,
iPhone X, iPhone 8 Plus, iPhone 8, iPhone
7 Plus, iPhone 7, iPhone SE, iPhone 6s
Plus, iPhone 6s, iPhone 6 Plus, iPhone 6,
iPod touch (7th generation), iPod touch (6th
generation)
The system is compatible with iOS 11.0
or later.
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Sony CONFIDENTIAL
For Authorized Servicer
TABLE OF CONTENTS
1. SERVICING NOTES ............................................. 5
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 11
2-2. Side Panel H-L, H-R Section .......................................... 12
2-3. Top-H Panel Section ....................................................... 13
2-4. Loading-H Panel Section ................................................ 14
2-5. DAB Assembly_UART (AEP),
Rear Panel ST-H Section................................................. 15
2-6. CDM, DC Fan (3500RPM/200MM) Section ................. 16
2-7. CDM90-DVBU204//M ................................................... 17
2-8. Service Optical Device (7G), Flexible Flat Cable .......... 18
2-9. Chassis Section ............................................................... 19
2-10. SMPS, MOTHERBOARD and LED HUB Board .......... 20
2-11. Mid Horn Rear-H Section ............................................... 21
2-12. Front Panel Section ......................................................... 22
2-13. Front Panel ST-H Section, Front Panel SW Section ....... 23
2-14. Rear Cabinet Section ...................................................... 24
2-15. Loudspeaker (30cm) (Woofer) (SP9) .............................. 25
3. TEST MODE ............................................................ 26
4. ELECTRICAL CHECK ......................................... 27
5. TROUBLESHOOTING .......................................... 28
6. DIAGRAMS
6-1. Block Diagram
- RS SERVO, USB, TOUCH, HDMI Section - .............. 35
6-2. Block Diagram - MAIN Section - ................................... 36
6-3. Block Diagram - AMP Section - ..................................... 37
6-4. Block Diagram
- PANEL, POWER SUPPLY Section - ........................... 38
6-5. Block Diagram - SMPS Section - ................................... 39
6-6. Printed Wiring Board - MOTHERBOARD Board
(Component Side) - ......................................................... 41
6-7. Printed Wiring Board - MOTHERBOARD Board
(Conductor Side) - .......................................................... 42
6-8. Printed Wiring Board
- SENSOR Board (Component Side) - ........................... 43
6-9. Printed Wiring Board
- SENSOR Board (Conductor Side) - ............................. 44
6-10. Printed Wiring Board - SMPS Board - ........................... 45
6-11. Printed Wiring Board - VFD Board - ............................. 46
6-12. Printed Wiring Board - MIC-USB Board - ..................... 47
6-13. Printed Wiring Board - POWER-KEY Board - .............. 48
6-14. Printed Wiring Board
- LED HUB Board (Component Side) - ......................... 49
6-15. Printed Wiring Board
- LED HUB Board (Conductor Side) - ........................... 50
6-16. Printed Wiring Board - DAB Board (AEP) - .................. 51
6-17. Printed Wiring Board - PARTY LED-LR Board - .......... 51
6-18. Printed Wiring Board - EXTENSION Board - ............... 52
6-19. Printed Wiring Board - PARTY RGB-FR Board - .......... 52
6-20. Printed Wiring Board - PARTY RGB-BK Board - ......... 52
6-21. Printed Wiring Board - SW LED-L Board - ................... 53
6-22. Printed Wiring Board - SW LED-R Board - ................... 53
6-23. Printed Wiring Board - IR Board - .................................. 53
6-24. Printed Wiring Board - HORN LED Board - ................. 54
6-25. Printed Wiring Board - MID LED Board - ..................... 54
6-26. Printed Wiring Board - NFC Board - .............................. 54
7. EXPLODED VIEWS
7-1. Loading-H Panel Section ................................................ 55
7-2. DAB Assembly_UART (AEP) Section ......................... 56
7-3. SMPS Board Section ...................................................... 57
7-4. Chassis Section ............................................................... 58
7-5. Mid Horn Rear-H Section ............................................... 59
7-6. Loudspeaker (10cm) Section .......................................... 60
7-7. Front Panel ST-H Section ............................................... 61
7-8. Front Panel SW Section .................................................. 62
7-9. Loudspeaker (30cm) Section .......................................... 63
7-10. Rear Cabinet Section ...................................................... 64
7-11. Side Panel H-L, H-R Section .......................................... 65
7-12. Top-H Panel Section ....................................................... 66
7-13. Rear Panel ST-H Section................................................. 67
7-14. CDM Section .................................................................. 68
7-15. DVD Mechanism Section (CDM90-DVBU204//M) ...... 69
8. ELECTRICAL PARTS LIST .............................. 70
Accessories are listed in the last part of the electrical parts list.
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MHC-V83D
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Sony CONFIDENTIAL
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SECTION 1
SERVICING NOTES
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.
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
Caution – use of controls or adjustments or performance of
procedures other than those specifi ed herein may result in hazardous
radiation exposure.
This appliance is classifi ed as a CLASS 1 LASER product under
IEC 60825-1:2014.
When unpacking the carton, be sure that two people handle the
unit. Dropping the unit may cause personal injury and/or property
damage.
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.
MODEL IDENTIFICATION
MODEL NO. :
MHC-V83D
MODEL NUMBER LABEL
Destination Code
PART No.
– Rear view –
Model Part No.
LA9 5-014-073-0[]
AEP 5-014-073-1[]
E4 5-014-073-4[]
E12 5-014-073-5[]
RU 5-014-073-7[]
MY 5-014-073-8[]
AR 5-014-073-9[]
TH 5-014-085-1[]
EA 5-014-085-3[]
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Sony CONFIDENTIAL
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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.
The message “PLEASE SET DEST” is always displayed during sys-
tem is turn on.
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 5.
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 [FIESTA] 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 [TUNING +>] / [TUNING ―.] 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”E12 India
“D ME AFC”E3, E93, E4,
SA2, EA3
Middle East & Africa countries
“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 26 again to confi rm on the model & destination.
NOTE OF REPLACEMENT OF THE SENSOR BOARD
When the SENSOR board is defective, exchange the TOP PANEL
ASSY SERVICE (V83D).
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 func-
tion.
3. Touch [MEGA BASS] touch key and [VOCAL FADER/VOICE
CHANGER] 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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Sony CONFIDENTIAL
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Protect Type Description:
X (Error Code) Description
2 Defect of thermistor IC or charging circuit
used by SPM (Sound Pressure Management)
system.
3 • There is possibility of over current happen
at speaker output or speaker damage (short-
ed).
• 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).
4 • DC appears in SP terminal by defect of
AMP IC.
6 • There is possibility of DC FAN is blocked
or damaged.
• Defect of DC FAN driver circuit.
SELF-DIAGNOSIS FUNCTION
When the self-diagnosis function is activated, a service number ap-
pears 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
Cause and corrective action
C 13 This disc is dirty.
• Clean the disc with a soft cloth.
C 31 The disc is not inserted correctly.
• Turn off the system, then turn it back
on again.
Then re-insert the disc correctly.
E XX
(XX is a number)
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
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”
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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Sony CONFIDENTIAL
For Authorized Servicer
HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF
Note 1: After the side panel H-L, H-R section and top-H panel section are removed, this work is done.
Note 2: Please prepare the thin wire (clip etc. processed to the length of 25mm, diameter 1.7mm).
3Insert the clip etc.
– Left view – hole
– Top view –
tray
DVD mechanism
deck
Insert the clip etc. processed to the
length of 25mm, diameter 1.7mm
in the hole on the side of the
CDM and push.
Note: Push after it inserts it
in this hole well.
25mm,
diameter
1.7mm
1Remove the side panel H-L, H-R section.
2Remove the top-H panel section.
(Illustration of disassembly is omitted.)
4
SYSSET
2020/06/2222:32:42(GMT+09:00)

MHC-V83D
9
Sony CONFIDENTIAL
For Authorized Servicer
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When removing the SMPS board and MOTHERBOARD board, be sure to perform the discharge process by referring below procedure.
Remove SMPS board fi rst follow by MOTHERBOARD board.
Note: Be sure to discharge using a resistor of 500~800 .
SMPS Board (Conductor side view)
1. Disconnect all the wires and FFC which connected to the SMPS board (avoid touching any component).
2. Unscrew the SMPS board.
3. Pulling up the wire (avoid touching any component) to lift up the SMPS board.
4. Flip the SMPS board to conductor side and perform discharge at terminal of C6301, C6322, C6534, C6558 and C6559 for 10 seconds each.
800 :/5 W
R
800 :/5 W
R
R
800 :/5 W
C6559
C6558 C6301 C6322
R
800 :/5 W
R
800 :/5 W
C6534
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 C3662 for 10 seconds.
800 :/5 W
R
C3662
SYSSET
2020/06/2222:32:42(GMT+09:00)

MHC-V83D
10
Sony CONFIDENTIAL
For Authorized Servicer
stand
POWER-KEY board
VFD board
MIC-USB board
CDM90-DVBU204//M
SMPS board
SERVICE POSITION
SYSSET
2020/06/2222:32:42(GMT+09:00)