Sony MHC-V7D Schematic
MHC-V7D
SERVICE MANUAL
Ver. 1.1 2015.06
Model Name Using Similar Mechanism HCD-GPX555/GPX888
DVD
Section
DVD Mechanism Type CDM90-DVBU204//C
Optical Pick-up Name CMS-S76RFS7G1 OR CMS-S76RFS7GP
AEP Model
UK Model
E Model
Australian Model
Amplifi er section
The following are measured at
AC 120 V – 240 V, 50/60 Hz
Power output (rated)
Left/Right Channel: 400 W + 400 W
(per channel at 4 ohms, 1 kHz, 1% THD)
RMS output power (reference)
Left/Right Channel: 720 W + 720 W
(per channel at 4 ohms, 1 kHz)
Speaker section
Speaker system:
Tweeter + Mid range speaker + Woofer
Tweeter L/R: 40 mm cone type
Mid L/R: 120 mm cone type
Woofer: 250 mm cone type
Inputs
AUDIO IN 1/PARTY CHAIN IN L/R
Voltage 2 V, impedance 47 kilohms
AUDIO IN 2 L/R
Voltage 2 V, impedance 47 kilohms
MIC 1, MIC 2
Sensitivity 1 mV, impedance 10 kilohms
(USB) 1, (USB) 2 port:
Type A
Outputs
AUDIO OUT/PARTY CHAIN OUT L/R
Voltage 2 V, impedance 1 kilohm
VIDEO OUT
Max. output level 1 Vp-p, unbalanced,
Sync. negative load impedance 75 ohms
USB section
Supported bit rate
WMA: 48 kbps – 192 kbps, VBR, CBR
AAC: 48 kbps – 320 kbps, VBR, CBR
Sampling frequencies
WMA: 44.1 kHz
AAC: 44.1 kHz
Supported USB device
Mass Storage Class
Maximum current
1 A
SPECIFICATIONS
Disc/USB section
Supported bit rate
MPEG1 Layer-3:
32 kbps – 320 kbps, VBR
Sampling frequencies
MPEG1 Layer-3:
32 kHz/44.1 kHz/48 kHz
Xvid
Video codec: Xvid
Bit rate: 4.854 Mbps (MAX)
Resolution/Frame rate:
720 × 480, 30 fps
720 × 576, 25 fps
Audio codec: MP3
MPEG4
File format: MP4 File Format
Video codec:
MPEG4 Simple Profi le
(AVC is not compatible.)
Bit rate: 4 Mbps
Resolution/Frame rate:
720 × 576, 30 fps
Audio codec: AAC-LC
(HE-AAC is not compatible.)
DRM: Not compatible
Disc player section
System
Compact disc and digital audio and
video system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6 μW
* This output is the value measure-
ment 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
NTSC and PAL
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 3.0
Output
BLUETOOTH Standard Power Class 2
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 profiles
A2DP (Advanced Audio Distribution
Profile)
AVRCP (Audio Video Remote
Control Profile)
SPP (Serial Port Profile)
Supported codecs
SBC (Sub Band Codec)
AAC (Advanced Audio Coding)
1)
The actual range will vary depending on
factors such as obstacles between devices,
magnetic fields around a microwave oven,
static electricity, reception sensitivity,
antenna’s performance, operating system,
software application, etc.
2)
BLUETOOTH standard profiles
indicate the purpose of BLUETOOTH
communication between devices.
1)
2)
General
Power requirements
AC 120 V – 240 V, 50/60 Hz
Power consumption
220 W
Power consumption (at the Power Saving
mode)
0.5 W (When “BT STBY” is set to
“OFF”)
4 W (When “BT STBY” is set to
“ON”)
Dimensions (w/h/d) (Approx.)
340 mm × 924 mm × 320 mm
Mass (Approx.)
19 kg
Supplied accessories
• 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)
The AC plug adaptor is not use in Chile. Use
this plug adaptor in the countries where it is
necessary.
Design and specifications are subject to
change without notice.
– Continued on next page –
9-890-671-02
2015F80-1
2015.06
©
HOME AUDIO SYSTEM
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
MHC-V7D
Ver. 1.1
License and Trademark Notice
•
is a trademark of DVD Format/Logo Licensing Corporation.
•
“DVD+RW”, “DVD-RW”, “DVD+R”, “DVD-R”,
the “CD” logos are trademarks.
• MPEG Layer-3 audio coding technology and patents licensed from
Fraunhofer IIS and Thomson.
• Windows Media is either a registered trademark or trademark of
Microsoft Corporation in the United States and/or other countries.
• This product is protected by certain intellectual property rights of
Microsoft Corporation. Use or distribution of such technology outside
of this product is prohibited without a license from Microsoft or an
authorized Microsoft subsidiary.
• “WALKMAN” and “WALKMAN” logo are registered trademarks of
Sony Corporation.
• This system incorporates Dolby* Digital.
* Manufactured under license from Dolby Laboratories.
Dolby and the double-D symbol are trademarks of Dolby
Laboratories.
• The BLUETOOTH
owned by Bluetooth SIG, Inc. and any use of such marks by Sony
Corporation is under license. Other trademarks and trade names are
those of their respective owners.
• The N Mark is a trademark or registered trademark of NFC Forum,
Inc. in the United States and in other countries.
• Android™ is a trademark of Google Inc.
• Google Play™ is a trademark of Google Inc.
• Apple, the Apple logo, iPhone, and iPod touch are trademarks of
Apple Inc., registered in the U.S. and other countries. App Store
is a service mark of Apple Inc.
• “Made for iPod” and “Made for iPhone” mean that an electronic
accessory has been designed to connect specifically to iPod or
iPhone, respectively, and has been certified by the developer to
meet Apple performance standards. Apple is not responsible for
the operation of this device or its compliance with safety and
regulatory standards. Please note that the use of this accessory
with iPod or iPhone may affect wireless performance.
• THIS PRODUCT IS LICENSED UNDER THE MPEG-4 VISUAL
PATENT PORTFOLIO LICENSE FOR THE PERSONAL AND
NON-COMMERCIAL USE OF A CONSUMER FOR
(i) ENCODING VIDEO IN COMPLIANCE WITH THE MPEG-4
VISUAL STANDARD (“MPEG-4 VIDEO”)
AND/OR
(ii) DECODING MPEG-4 VIDEO THAT WAS ENCODED BY
A CONSUMER ENGAGED IN A PERSONAL AND NONCOMMERCIAL 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 ® marks are not specified.
Abbreviation
•
®
word mark and logos are registered trademarks
“DVD VIDEO”, and
AR : Argentina model
AUS : Australian model
E4 : African model
E93 : 240 V AC area in E model
LA9 : Latin-American model
MY : Malaysia model
RU : Russian model
TH : Thai model
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
AC
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.
2
TABLE OF CONTENTS
MHC-V7D
Ver. 1.1
1. SERVICING NOTES ............................................. 4
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 9
2-2. Side Case L, R ................................................................ 10
2-3. Top Panel Block .............................................................. 10
2-4. Panel Loading Block ....................................................... 11
2-5. Back Panel Block ............................................................ 12
2-6. CDM Block ..................................................................... 13
2-7. MOTHERBOARD Board, 2CH DAMP Board .............. 14
2-8. REGULATOR, SWITCHING (SSN-152AD) ................ 15
2-9. Front Panel Block ........................................................... 16
2-10. Loudspeaker (25cm) (Woofer) (SP5) .............................. 17
2-11. Loudspeaker (12cm) (Mid: L-CH) (SP1),
Loudspeaker (12cm) (Mid: R-CH) (SP3) ....................... 18
2-12. Service, Optical Device (7G), Flexible Flat Cable ......... 19
3. TEST MODE ............................................................ 20
4. ELECTRICAL CHECK ......................................... 25
5. TROUBLESHOOTING .......................................... 27
6. DIAGRAMS
6-1. Block Diagram - RS SERVO, USB 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. Printed Wiring Board
- MOTHERBOARD Board (Component Side) - ............ 38
6-6. Printed Wiring Board
- MOTHERBOARD Board (Conductor Side) - ............. 39
6-7. Schematic Diagram
- MOTHERBOARD Board (1/8) - ................................. 40
6-8. Schematic Diagram
- MOTHERBOARD Board (2/8) - ................................. 41
6-9. Schematic Diagram
- MOTHERBOARD Board (3/8) - ................................. 42
6-10. Schematic Diagram
- MOTHERBOARD Board (4/8) - ................................. 43
6-11. Schematic Diagram
- MOTHERBOARD Board (5/8) - ................................. 44
6-12. Schematic Diagram
- MOTHERBOARD Board (6/8) - ................................. 45
6-13. Schematic Diagram
- MOTHERBOARD Board (7/8) - ................................. 46
6-14. Schematic Diagram
- MOTHERBOARD Board (8/8) - ................................. 47
6-15. Printed Wiring Board - 2CH DAMP Board - .................. 48
6-16. Schematic Diagram - 2CH DAMP Board - .................... 49
6-17. Printed Wiring Board 6-18. Schematic Diagram -
6-19. Printed Wiring Board - GESTURE Board - .................... 52
6-20. Schematic Diagram 6-21. Printed Wiring Board 6-22. Schematic Diagram 6-23. Printed Wiring Board 6-24. Schematic Diagram 6-25. Printed Wiring Board 6-26. Schematic Diagram 6-27. Printed Wiring Board 6-28. Schematic Diagram 6-29. Printed Wiring Board 6-30. Schematic Diagram 6-31. Printed Wiring Board 6-32. Schematic Diagram 6-33. Printed Wiring Board 6-34. Schematic Diagram -
STR Board - .............................. 50
STR Board - ................................. 51
GESTURE Board - ...................... 53
GESTURE LED Board - ........... 54
GESTURE LED Board - ............. 54
LCD Board - ............................. 55
LCD Board - ................................ 56
MIC Board - .............................. 57
MIC Board - ................................. 58
IR Board - ................................. 58
IR Board - .................................... 58
PARTY LED Board - ................ 59
PARTY LED Board - ................... 59
SPK PARTY LED Board - ........ 59
SPK PARTY LED Board - ........... 59
SPK LED Board - ..................... 60
SPK LED Board - ........................ 60
7. EXPLODED VIEWS
7-1. Side Panel Section .......................................................... 74
7-2. Panel Loading Section .................................................... 75
7-3. Back Panel Section ......................................................... 76
7-4. MOTHERBOARD Board Section .................................. 77
7-5. Chassis Section ............................................................... 78
7-6. Front Panel Section ......................................................... 79
7-7. Speaker Cabinet Section ................................................. 80
7-8. Top Panel Section ........................................................... 81
7-9. RV MODULE Section .................................................... 82
7-10. CDM BLOCK Section .................................................... 83
7-11. DVD Mechanism Section
(CDM90-DVBU204//C) ................................................. 84
8. ELECTRICAL PARTS LIST .............................. 85
Accessories are given in the last of the electrical parts list.
3
MHC-V7D
Ver. 1.1
SECTION 1
SERVICING NOTES
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 °C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the
leadfree mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to 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
– Back Panel –
– MODEL LABEL –
HOME AUDIO SYSTEM
Destination code
PART No.
Model Part No.
AEP
UK
RU
E4
MY
AUS
TH
LA9
AR
E93
4-566-331-0[]
4-567-170-0[]
4-567-171-0[]
4-567-172-0[]
4-567-173-0[]
4-567-174-0[]
4-567-175-0[]
4-567-177-0[]
4-567-179-0[]
4-567-181-0[]
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 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.
This appliance is classifi ed as a
CLASS 1 LASER product by
IEC60825-1:2007. This marking
is located on the rear exterior.
4
• Abbreviation
AR : Argentina model
AUS : Australian model
E4 : African model
E93 : 240 V AC area in E model
LA9 : Latin-American model
MY : Malaysia model
RU : Russian model
TH : Thai model
MHC-V7D
Ver. 1.1
PLAYABLE DISCS
• AUDIO CD
• CD-R/CD-RW/DVD-R/DVD-RW
– audio data
– MP3 fi les that conforms to ISO9660 Level 1/Level 2, or
Joliet (expansion format).
Notes
• MP3 (MPEG 1 Audio Layer-3) is a standard format defi ned
by ISO (International Organization for Standardization) which
compresses audio data. MP3 fi les must be in MPEG 1 Audio
Layer-3 format.
• The system can only play back MP3 fi les that have a fi le
extension of “.mp3”.
• JIG
When disassembling the set, use the following jig (for front
panel removal).
Part No.: J-2501-238-A JIG FOR SPEAKER REMOVAL
NOTE OF REPLACING THE IC1008 ON THE 2CH
DAMP BOARD
IC1008 on the 2CH DAMP board cannot exchange with single.
When this part on the 2CH DAMP board is damaged, exchange
the entire mounted board.
NOTE OF REPLACING THE IC002, IC101, IC105, IC106,
IC301, IC302 AND IC303 ON THE MOTHERBOARD
BOARD
IC002, IC101, IC105, IC106, IC301, IC302 and IC303 on the
MOTHERBOARD board cannot exchange with single. When these
parts on the MOTHERBOARD board are damaged, exchange the
entire mounted board.
NOTE OF REPLACEMENT OF THE MS-476 BOARD
When the MS-476 board is defective, exchange the entire
LOADING ASSY (MB).
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
NOTE OF REPLACING MOTHERBOARD BOARD OR
BLUETOOTH MODULE OR RC-S730 (WW) BOARD
When the MOTHERBOARD board or BLUETOOTH module
or RC-S730 (WW) board are replaced, please execute the below
service mode.
Pairing this system with a
1. Press the [\/1] button to turn the power on.
2. Place the Bluetooth device within 1 meter (3 feet) from the
system.
3. Press BLUETOOTH on the unit to select Bluetooth function.
“BT AUDIO” appears in the display panel.
4. Hold down BLUETOOTH on the unit for 2 seconds or more.
“PAIRING” fl ashes in the display panel.
5. Perform the pairing procedure on the Bluetooth device.
6. Select the model number of the unit on the display of the
Bluetooth device.
For example, select “SONY : MHC-V7D”. If passkey is
required on the Bluetooth device, enter “0000”.
7. Perform the Bluetooth connection on the Bluetooth device.
8. When pairing is completed and the Bluetooth connection is
established, the Bluetooth device name appears in the display
panel.
9. To cancel pairing operation, hold down BLUETOOTH on the
unit for 2 seconds or more until “BT AUDIO” appears in the
display panel.
Bluetooth
device
Connecting with a smartphone by one touch (NFC)
Note: The operation in this mode must use a NFC-compatible smartphone
(Smartphones with a built-in NFC function [OS: Android 2.3.3 or
later, excluding Android 3.x])
1. Press the [\/1] button to turn the power on.
2. Download and install the app “NFC Easy Connect”.
Download the free Android app from Google Play by searching
for “NFC Easy Connect”.
3. Start the app “NFC Easy Connect” on the smartphone.
Make sure that the application screen is displayed.
4. Touch the smartphone to the N-Mark on the system until the
smartphone vibrates.
Releasing Procedure:
1. Press [
2. Press the [FUNCTION] button to select the DVD/CD function.
3. Press the [ENTER]
4. The message “UNLOCKED” is displayed and the disc tray is
Note: When “LOCKED” is displayed, the slot lock is not released by
\/1] button to turn the power on.
button and [VOCAL FADER] button
simultaneously and hold down for around 3 seconds.
unlocked.
turning power on/off with the [\/1] button.
Complete the connection by following the instructions
displayed on the smartphone.
5. When pairing is completed and the Bluetooth connection is
established, the Bluetooth device name appears in the display
panel.
5
MHC-V7D
Playing music from a
For a Bluetooth device
1. Press the [
2. Press BLUETOOTH on the unit to select Bluetooth function.
“BT AUDIO” appears in the display panel.
3. Establish connection with the Bluetooth device.
Press BLUETOOTH on the unit to connect to the last
connected Bluetooth device.
Perform the Bluetooth connection from the Bluetooth device if
the device is not connected.
Once the connection is established, the Bluetooth device name
appears in the display panel.
4. Press N.
Depending on the Bluetooth device,
– you may have to press N twice.
– you may need to start playback of an audio source on the
Bluetooth device.
For an NFC-compatible smartphone
1. Press the [\/1] button to turn the power on.
Touch the smartphone to the N-Mark on the system to establish
the Bluetooth connection.
Start playback of an audio source on the smartphone. For
details on playback, refer to the operating instructions of your
smartphone.
\/1] button to turn the power on.
Bluetooth
device
BOND FIXATION OF ELECTRIC PARTS
When 2CH DAMP board is replaced or the following object parts
are replaced, it is necessary to fi x parts to the boards by using a
specifi ed bond without fail.
• Object boards
Complete 2CH DAMP board
• Object parts
Board Ref. No.
2CH DAMP C1210, C1211, L1000, L1002
• Use bond
1) SILICONE RTV ADHESIVE (UB-501G) 300ML
2) HM-40 (E318202) 300ML
• Parts position
1. 2CH DAMP board (page 6)
1. 2CH DAMP board
– 2CH DAMP Board (Component Side) –
To disconnect the Bluetooth device
For a Bluetooth device
Press BLUETOOTH on the unit.
“BT AUDIO” appears in the display panel.
For an NFC-compatible smartphone
Touch the smartphone to the N-Mark on the system again.
To erase all the pairing registration information perform
COLD RESET test mode (Refer page 20).
L1000 L1002
C1211
C1210
The portion which applies bond:
6
HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF
Note 1: After the side case and top panel block are removed, this work is done.
Note 2: Please prepare the thin wire (clip etc. processed to the length of 8 cm or more).
1 Remove the side case L, R, top panel block.
(Illustration of disassembly is omitted.)
hole
– Left view –
Insert the clip etc. processed to the
length of 8 cm or more in the hole
on the side of the CDM and push.
DVD mechanism deck
2 Insert the clip etc.
MHC-V7D
Ver. 1.1
3
8 cm or more
Note: Push after it inserts it
in this hole well.
tray
– Top view –
7
MHC-V7D
W
CAPACITOR DISCHARGE FOR ELECTRIC SHOCK PREVENTION
Switching Regulator Board (Conductor side view)
In checking the Switching Regulator board, make 3 capacitors discharge of C18, C20 and C27 for eletrical shock prevention.
800 :/5 W
800 :/5 W
C18
C27
C20
800 :/5
8
Note: Disassemble the unit in the order as shown below.
2-1. DISASSEMBLY FLOW
SET
2-2. SIDE CASE L, R
(Page 10)
2-3. TOP PANEL BLOCK
(Page 10)
2-4. PANEL LOADING BLOCK
(Page 11)
SECTION 2
DISASSEMBLY
MHC-V7D
Ver. 1.1
2-5. BACK PANEL BLOCK
(Page 12)
2-6. CDM BLOCK
(Page 13)
2-12. SERVICE, OPTICAL DEVICE (7G),
FLEXIBLE FLAT CABLE
(Page 19)
2-7. MOTHERBOARD BOARD,
2CH DAMP BOARD
(Page 14)
2-8. REGULATOR, SWITCHING
(SSN-152AD)
(Page 15)
2-9. FRONT PANEL BLOCK
(Page 16)
2-10. LOUDSPEAKER (25cm)
(WOOFER) (SP5)
(Page 17)
2-11. LOUDSPEAKER (12cm)
(MID: L-CH) (SP1),
LOUDSPEAKER (12cm)
(MID: R-CH) (SP3)
(Page 18)
9
MHC-V7D
Ver. 1.1
Note: Follow the disassembly procedure in the numerical order given.
2-2. SIDE CASE L, R
1 two screws
(tapping (HEX))
3 Remove the side case L
in the direction of the arrow.
4 side case L
2 two screws
(+BVTP 3 u 8)
3 Remove the side case R
in the direction of the arrow.
2 two screws
(+BVTP 3 u 8)
4 side case R
1 two screws
(tapping (HEX))
2-3. TOP PANEL BLOCK
Note: When installing the flexible flat
cable, ensure that the colored line
is not slanted after insertion.
OK
Insert is straight to the interior.
flexible flat
cable
colored line
connector
NG
Insert is incline
flexible flat
cable
colored line
connector
:LUHVHWWLQJ
qf Remove the panel, top block
in the direction of the arrow.
0 clamp
3 one screw
(+BVTP 3 u 8)
qs two claws
7 flexible flat cable
(25P) (CN118)
qa Remove the wire
from clamp
STR board
panel, top
clamp
9 CN3300
(4P)
qd Press here in the direction of the arrow
to ensure claws are released from front panel.
1 one screw
(+BVTP 3 u 8)
qg panel,
top block
A
A
2 one screw
(+BVTP 3 u 8)
3 one screw
(+BVTP 3 u 8)
4 CN451 (8P)
5 flexible flat cable
(7P) (CN120)
6 flexible flat cable
(6P) (CN105)
8 CN3500 (4P)
10
front side
2-4. PANEL LOADING BLOCK
hole
– Left view –
Insert the clip etc. processed to the
length of 8 cm or more in the hole
on the side of the CDM and push.
DVD mechanism deck
MHC-V7D
Ver. 1.1
3 three claws
4 panel loading
block
2 Draw out the tray.
1 Insert the clip etc.
8 cm or more
Note: Push after it inserts it
in this hole well.
tray
– Top view –
11
MHC-V7D
Ver. 1.1
2-5. BACK PANEL BLOCK
1 CN1011 (2P)
hole
– Top rear view –
Note 2: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
OK NG NG
Insert is straight
to the interior.
connector
connector
Insert is shallow
connector
connector connector
connector
Insert is incline
hook
2 three screws
(+BVTP 3 u 8)
3 panel, back block
Note 1:
align two hooks and two holes.
When installing the panel, back block,
2 three screws
(+BVTP 3 u 8)
2 two screws
(+BVTP 3 u 8)
2 three screws
(+BVTP 3 u 8)
12
2-6. CDM BLOCK
MHC-V7D
Ver. 1.1
(AEP, UK, RU, AUS)
CDM bracket guides
Note 1:
align two CDM bracket guides
and two holes.
When installing the CDM block,
:LUHVHWWLQJ
clamp
CDM block
rear side
front panel
2CH DAMP board
4 two screws
(+BVTP 3 u 8)
5 clamp
9 CDM block
3 flexible flat cable
(24P) (CN302)
7 Release the catchers before
remove the CDM block.
8 Remove the CDM block
in the direction of
the arrow.
2 flexible flat cable
(5P) (CN303)
1 CN401 (6P)
6 Remove the wire
from clamp
Note 2: When installing the flexible flat cable, ensure that
the colored line is not slanted after insertion.
OK
Insert is straight to the interior. Insert is incline
flexible flat
cable
colored line
flexible flat
cable
colored line
connectorconnector
NG
hole
Note 3: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
OK NG NG
Insert is straight
to the interior.
connector
connector
Insert is shallow
connector
connector connector
connector
• Abbreviation
AUS : Australian model
RU : Russian model
Insert is incline
13
MHC-V7D
Ver. 1.1
2-7. MOTHERBOARD BOARD, 2CH DAMP BOARD
qg three screws
(+PTPWH 2.6 u L (DIA8.0))
qh heat sink
qd one screw
B
(+BVTP 3 u 8)
qd one screw
(+BVTP 3 u 8)
6 cushion (H)
7 flexible flat cable
(21P) (CN116)
8 one screw
(+BVTP 3 u 8)
qk sheet,
thermal
qd two screws
(+BVTP 3 u 8)
w; 2CH DAMP
board
qf clamp
• Abbreviation
AUS : Australian model
RU : Russian model
8 three screws
(+BVTP 3 u 8)
0 MOTHERBOARD board
8 one screw
(+BVTP 3 u 8)
9 clamp
qj bracket, heat sink
ql cushion E1
qs CN1005 (4P)
qa CN1001 (10P)
5 flexible flat cable
(10P) (CN102)
B
9 clamp
4 CN001 (9P)
1 cushion
(E 0.5)
2 core, ferrite
$(38.58$86
:LUHVHWWLQJ
MOTHERBOARD board
core, ferrite panel, back
clamp chassis, sub
3 CN513 (8P)
clamp
rear
side
Note 1: When installing the flexible flat cable, ensure that
the colored line is not slanted after insertion.
OK
Insert is straight to the interior. Insert is incline
flexible flat
cable
colored line
flexible flat
cable
colored line
connectorconnector
NG
14
Note 2: When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
OK NG NG
Insert is straight
to the interior.
connector
connector
Insert is shallow
connector
connector connector
connector
Insert is incline
2-8. REGULATOR, SWITCHING (SSN-152AD)
2 Remove the wire from
the hole.
3 two screws
(+BVTP 3 u 8)
MHC-V7D
Ver. 1.1
:LUHVHWWLQJ
IR board
clamp
front panel
rear side
4 one screw
(+BVTP 3 u 8)
5 clamp
clamp
chassis,
sub
4 one screw
(+BVTP 3 u 8)
$(38.58$86
7 eight screws
(+BVTP 3 u 8)
1 Remove
the wire
from the
clamp.
qf three tapping
screws (1)
(3.5 x 14)
qd one screw
(+BVTP 3 u 8)
5 clamp
qs REGULATOR,
SWITCHING
(SSN-152AD)
6 chassis, sub
3 two screws
(+BVTP 3 u 8)
7 one screw
(+BVTP 3 u 8)
8 clamp
9 cushion
(E 0.5)
0 core, ferrite
qa CN1
(2P)
qf three tapping
screws (1)
(3.5 x 14)
qf three tapping
screws (1)
(3.5 x 14)
• Abbreviation
AUS : Australian model
RU : Russian model
1 Remove the wire from
the clamp.
qg chassis block
qd one screw
(+BVTP 3 u 8)
Note : When you install the connector, please install them correctly.
There is a possibility that this machine damages when not
correctly installing it.
OK NG NG
Insert is straight
to the interior.
connector
Insert is shallow
connector
Insert is incline
connector
connector
connector connector
15
MHC-V7D
Ver. 1.1
2-9. FRONT PANEL BLOCK
2 Insert the jig into a space and slowly
remove the panel, front block.
Note 1: When using a jig, please work
so as not to injure panel, front
block and speaker cabinet.
1 one tapping screw
(1) (3.5 x 14)
3 All bosses are removed while moving
jig in the direction of the arrow, and
panel, front block is removed.
total fifteen bosses
6 terminal (narrow)
[black/yellow]
5 Remove the panel, front block
in the direction of an arrow.
2 Insert the jig into a space and slowly
remove the panel, front block.
Note 1: When using a jig, please work
so as not to injure panel, front
block and speaker cabinet.
3 All bosses are removed while moving
jig in the direction of the arrow, and
panel, front block is removed.
6 terminal (wide side)
[yellow]
6 terminal (narrow)
[black/yellow]
6 terminal (wide side)
[yellow]
4 Remove the wire
from the clamp.
7 panel,
front block
16
:LUHVHWWLQJ
front panel
LOUDSPEAKER (4cm)
(Tweeter) (R-CH)
clamp
rear side
2-10. LOUDSPEAKER (25cm) (WOOFER) (SP5)
MHC-V7D
+RZWRLQVWDOOWKHORXGVSHDNHUFP63
terminal position
loudspeaker (25cm)
(SP5)
3 terminal
(wide side) [grey]
3 terminal (narrow)
[black]
1 eight screws
((4 u 16) (TYPE1), +BVTP)
4 loudspeaker (25cm)
(woofer) (SP5)
2 Remove the loudspeaker (25cm) (SP5)
in the direction of the arrow.
17
MHC-V7D
Ver. 1.1
2-11. LOUDSPEAKER (12cm) (MID: L-CH) (SP1), LOUDSPEAKER (12cm) (MID: R-CH) (SP3)
+RZWRLQVWDOOWKHORXGVSHDNHUFP
6363
terminal position
$(38.58$86
1 cushion (E 0.5)
loudspeaker
(12cm) (SP1)
4 Remove the loudspeaker
(12cm) (SP1) in the
direction of the arrow.
6 loudspeaker (12cm)
(mid: L-ch) (SP1)
3 four tapping screws
(1) (3.5 x 14) (black)
loudspeaker
(12cm) (SP3)
2 core, ferrite
5 terminal
(wide side)
5 terminal
(narrow side)
9 terminal
(narrow side)
9 terminal
(wide side)
18
7 four tapping screws
(1) (3.5 x 14) (black)
0 loudspeaker (12cm)
(mid: R-ch) (SP3)
8 Remove the loudspeaker (12cm) (SP3)
in the direction of the arrow.
• Abbreviation
AUS : Australian model
RU : Russian model
2-12. SERVICE, OPTICAL DEVICE (7G), FLEXIBLE FLAT CABLE
2 chuck holder assy (MB)
1 six claws
MHC-V7D
Ver. 1.1
qa insulator
8 four insulator screws
qs service,
optical device (7G)
qa insulator
qa insulator
6 belt
3 Insert the thin
wire (clip etc.).
qd loading base assy
4
5 tray
,QVWDOODWLRQRIIOH[LEOHIODWFDEOH3DQGIOH[LEOHIODWFDEOH3
Note: This illustration sees the loading assy (MB) from bottom side.
5 two claws
1 flexible flat cable (24P)
loading assy (MB)
0
9
7 connector
qf flexible flat cable
(5P)
qh cushion (H)
qj holder, FFC
qk flexible flat cable
(24P)
qg
loading assy (MB)
– Bottom view –
5 three claws
terminal face
2 Through the hole
3 Through the hole
6 holder, FFC
4
7 flexible flat cable
(24P)
8 flexible flat cable
(5P)
Under the guide
(Fold area)
Under the guide
9 cushion (H)
19
MHC-V7D
SECTION 3
TEST MODE
[PANEL TEST MODE]
This mode is used to check the fl uorescent indicator tube, LEDs,
keys, [MULTI CONTROL] knob, model, destination, motion
gesture and software version.
Procedure:
1. Press [ ] button and [
and hold 3 seconds.
2. All LEDs and segments in fl uorescent indicator tube are
lighted up.
3. When you want to enter to the software version display mode,
press [+] button.
The model information appears on the fl uorescent indicator
tube.
Press [+] button again to view the destination information.
4. During the destination information display, press [+] button.
Each time [+] button is pressed, the fl uorescent indicator tube
shows the version of each category software in the following
sequence: SC, MTK, OPU, UI, PF, SUB, SYS, CD, CMA,
CMB, ST, TA, TM and return back to model information display.
5. When [] button is pressed while the version numbers
are being displayed except model and destination, the
date of the software creation appears. When [] button is
pressed again, the display returns to the software version
display.
6. When [ENTER] button is pressed after all LEDs and segments
in fl uorescent indicator tube light up, alternate segments in
fl uorescent indicator tube and LEDs would light up, all RGB
LEDs and PARTY LIGHT LEDs would light up in red color.
If you press [ENTER] button again, another half of alternate
segments in fl uorescent indicator tube and LEDs would light
up, all RGB LEDs and PARTY LIGHT LEDs would light up
in green color. Pressing [ENTER] button again would cause
all segments in fl uorescent indicator tube and LEDs light up,
all RGB LEDs and PARTY LIGHT LEDs would light up in
blue color. Pressing [ENTER] button again would turn off all
segments in fl uorescent indicator tube and all LEDs including
RGB LEDs and PARTY LIGHT LEDs.
7. Press [‒] button, the key check mode is activated.
8. In the key check mode, the fl uorescent indicator tube displays
“K 0 E0”.
Each time a button is pressed, “K” value increases. However,
once a button has been pressed, it is no longer taken into
account.
“E” value increases in the manner of 0, 1, 2, 3 ... if [MULTI
CONTROL] knob is turned clockwise, or it decreases in the
manner of 0, 9, 8, 7 ... if [MULTI CONTROL] knob is turned
counterclockwise.
The fluorescent indicator tube displays “<” or “>” or “˄” or
“˅” between “K 0” and “E0” each time swing left, right, up
and down at motion gesture.
9. To release from this mode, press the buttons in the same
manner as step 1, or disconnect the power cord.
TUNING
‒ .] button simultaneously
[USER RESET]
The user reset clears all data including preset data stored in the data
flash to initial conditions exclude history mode data.
Procedure:
1. Press the [
2. Press [ENTER] button and [
neously for 3 seconds.
3. The message “RESET” is displayed on the f luorescent
indicator tube, then becomes the standby state.
[DISC TRAY LOCK MODE]
This mode let you lock the disc tray. When this mode is activated,
the disc tray will not open when [Z] button is pressed. The message
“LOCKED” will be displayed on the fluorescent indicator tube.
This mode only applied when there is disc on the tray.
Procedure:
1. Press the [\/1] button to turn the power on.
2. Press the [FUNCTION] button to select the DVD/CD function.
3. Press the [Z] button to open the disc tray and insert the CD.
4. Press the [Z] button to close the disc tray.
5. Press [ENTER] button and [VOCAL FADER] button
simultaneously for 5 seconds.
6. The message “LOCKED” is displayed on the fl uorescent
indicator tube and the disc tray is locked.
(Even if pressing the [Z] button, the message “LOCKED” is
displayed on the fluorescent indicator tube and the disc tray is
locked)
Releasing method:
1. Press [ENTER] button and [VOCAL FADER] button
simultaneously for 5 seconds.
2. The message “UNLOCKED” is displayed on the fluorescent
indicator tube and the disc tray is unlocked.
[Bluetooth PAIRING HISTORY CLEAR]
It can clear the Bluetooth pairing history.
Procedure:
1. Press the [\/1] button to turn the power on.
2. Press the [BLUETOOTH] button to turn the Bluetooth function.
3. Press [ENTER] button and [‒] button simultaneously for 3
seconds.
4. The message “BT HIST” → “CLEAR” is displayed on the
fluorescent indicator tube, and the pairing history of Bluetooth
is cleared.
\/1] button to turn the power on.
TUNING + >]
button simulta-
[COLD RESET]
The cold reset clears all data including preset data stored in the
data flash to initial conditions included history mode data. Execute
this mode when returning the set to the customer.
Procedure:
1. Press the [\/1] button to turn the power on.
2. Press [] button and [
for 3 seconds.
3. “COLD RST” appears on the fl uorescent indicator tube. After
that, the fluorescent indicator tube will display “SONY”. The
set will automatically Power ON and Power OFF again, and
the system is reset.
TUNING + >]
button simultaneously
20
[HISTORY MODE]
This mode is used to check important data stored in the system
when PROTECTOR happen.
Procedure:
[]
1. During demo mode, press
seconds to mode into history mode.
Press the [TUNING + >] button or [TUNING ‒ .] button
2.
to check history data stored.
Display on fl uorescent indicator tube Description
PCOUNT
PT
1 *h *h *h *h *h. *m *m
2 *h *h *h *h *h. *m *m
F
VOL
BASS
※※※※※※
button and [+] button for 5
※※
※※※※
※※※
※※※
MHC-V7D
No of time protector happen (0 ~ 99)
Refer to protect type description
Single Power On Time until protector happened (0~99999 hours,
0~99Min)
Total Power On Time [ no consider protector happen ] (0~99999 hours,
0~99Min)
Input Function during protector happened
Volume setting (MIN / 1 - 50 / MAX)
MEGA BASS setting (OFF / ON)
To release from History Mode.
To release from this mode, press [\/1] button.
Protect Type Description:
Error Code Description
01 The over current condition to MOSFET occurs
by defect of MOSFET or defect of PS output
line.
or
Unusual heat up of MOSFET by improper
assembly of heat sink, destruction of MOSFET
etc.
02 Defect of thermistor IC or charging circuit used
by SPM (Sound Pressure Management) system.
03 Defect of power supply circuit to AMP. There
is possibility of unusual power supply of any of
the AMP IC or Pre-amplifi er.
04 DC appears in SP terminal by defect of AMP
IC and MOSFET
06 Defect of DC FAN and DC FAN driver circuit
If speaker does not have output even if the set status is not in
PROTECT mode, the following defect might be possible:
Defects Possible cause
RESET defect Reset signal status from micom is not ‘H’.
21
MHC-V7D
[DVD COLOR SYSTEM MODE]
• This mode let you change the color system of the video output
from PAL to NTSC or vice-versa.
Procedure:
1. Press the [\/1] button to turn on the system.
2. Press the [FU NCTION] button until message “DVD/CD”
appears.
3. Press the [ENTER] button and [MIC ECHO] button simultaneously and hold for 3 seconds.
4. The message “PAL” or “NTSC” appears on the fl uorescent
indicator tube.
• To release from DVD Color System Mode
1. Once the color system has been selected, the mode is fi xed
there after. If you wish to change the mode again, perform the
above item 2 again.
[DVD SERVICE MODE]
• This mode let you make diagnosis and adjustment easily by
using the remote commander and the TV. The instructions,
diagnostic results, etc. are given on the on-screen display.
• TEST DISC LIST
Be sure to use the DVD disc that matches the signal standards
of your region.
• CD
YEDS-18 (Part No.: 3-702-101-01)
PATD-012 (Part No.: 4-225-203-01)
HLX-A1 (Part No.: J-2501-307-A)
• DVD SL (Single Layer)
NTSC : HLX-503 (Part No.: J-6090-069-A)
HLX-504 (Part No.: J-6090-088-A)
HLX-513 (Part No.: J-2501-305-A)
PAL : HLX-506 (Part No.: J-6090-077-A)
• DVD DL (Double Layer)
NTSC : HLX-501 (Part No.: J-6090-071-A)
HLX-505 (Part No.: J-6090-089-A)
HLX-514 (Part No.: J-2501-306-A)
PAL : HLX-507 (Part No.: J-6090-078-A)
5. To execute each function, press its number by using numeric
button on the remote commander.
6. To release from this mode, press the [\/1] button to turn off
the system.
• Execute IOP Measurement
In order to execute IOP measurement, the following standard
procedures must be followed.
1. From the Top Menu of Remocon Diagnosis Menu, select
“2. Drive Manual Operation” by pressing the [2] button on
the remote commander. The following screen appears on the
onscreen display.
Drive Manual Operation
1. Servo Control
2. Track/Layer Jump
3. Manual Adjustment
4. Tray Aging Mode
5. MIRR time Adjust
0. Return to Top Menu
2. Select “3. Manual Adjustment” by pressing the [3] button on
the remote commander. The following screen appears on the
on-screen display.
Manual Adjust
1. Track Balance Adjust:
2. Track Gain Adjust:
3. Focus Balance Adjust:
4. Focus Gain Adjust:
5. Eq Boost Adjust:
6. Iop:
7. TRV. Level:
8. S curve (FE) Level:
9. RFL (PI) Level:
0. MIRR Time:
O o Change Value
RETURN Return to previous menu
• Procedure to enter to DVD Service Mode:
1. Press the [\/1] button to turn on the system.
2. Press the [FU NCTION] button until message “DVD/CD”
appears.
3. Press the [SOUND FIELD] button and [VOCAL FADER]
button simultaneously and hold 3 seconds.
4. The message “SERVICE” appears on the fl uorescent indicator
tube.
The display of the “Model Name” of the “Remocon Diagnosis
Menu” change with the model and the destination appears on
screen display. Refer to below on the model name.
MHC-V7D: KIRIN
Remocon Diagnosis Menu
0. External Chip Check
1. Servo Parameter Check
2. Drive Manual Operation
3. Emergency History
4. Version Information
Model Name
IF-con
Syscon
: MHC-V7D_ XX
: Ver. XX.XX (XXXX)
: Ver. X.XXX
*1
*1: Changes depending on destination
3. Select “6. Iop:” by pressing the [6] button on the remote
commander.
4. Wait until a hexadecimal number appears in the on-screen
display as below:
Manual Adjust
1. Track Balance Adjust:
2. Track Gain Adjust:
3. Focus Balance Adjust:
4. Focus Gain Adjust:
5. Eq Boost Adjust:
6. Iop. ED
7. TRV. Level:
8. S curve (FE) Level:
9. RFL (PI) Level:
0. MIRR Time:
O o Change Value
RETURN Return to previous menu
5. Convert data from hexadecimal to decimal by using
conversion table.
6. Please fi nd the label on the rear of the BU (Base Unit).
The default IOP value is written in the label.
7. Subtract between these two values.
8. If the remainder is smaller than 93 (decimal), then it is OK.
However if the value is higher than 93, then the BU is defective
and need to be change.
22
MHC-V7D
9. Press the [RETURN] button on the remote commander to
return to previous menu.
10. Press the [0] button on the remote commander to return to the
Top Menu of Remocon Diagnosis Menu.
11. Press the [\/1] button to turn off the system.
• Check Emergency History
To check the emergency history, please follow the following
procedure.
1. From the Top Menu of Remocon Diagnosis Menu, select
“3. Emergency History” by pressing the [3] button on the
remote commander. The following screen appears on the
on-screen display.
Emg. History Check
Laser Hours CD 999h 59min
1. 01 05 04 04
00 00 00 00
2. 02 02 01 01 00 A9 4B 00
00 00 00 00
Next Next Page Prev Prev Page
O Return to Top Menu
DVD 999h 59min
00 92 46 00
00 00 23 45
00 00 23 45
(Displayed values in the above fi gure are example)
2. You can check the total time when the laser is turned on
during playback of DVD and CD from the above menu. The
maximum time, which can be displayed are 999h 59min.
3. You can check the error code of latest 10 emergency history
from the above menu. To view the previous or next page of
emergency history, press the [.] button or [>] button
on the remote commander. The error code consists of “Error
Code”, “Parameter of error code” and “Time of error code”.
• Error Code
• Parameter of error code
This is the detail of error code.
Example of Error code
1. 01 05 04 04 00 92 46 00
00 00 00 00 00 00 23 45
• Time of error code
This is the laser time when an error occurred.
Example of Error code
1. 01 05 04 04 00 92 46 00
00 00 00 00 00 00 23 45
To clear the Laser Hours
Press the [
DISPLAY] button and then press the [CLEAR]
button. The data for both CD and DVD data are reset.
Emg. History Check
Laser Hours CD 0h 0min
1. 01 05 04 04
00 00 00 00 00 00 23 45
2. 02 02 01 01 00 A9 4B 00
00 00 00 00 00 00 23 45
Next Next Page Prev Prev Page
O Return to Top Menu
DVD 0h 0min
00 92 46 00
To clear the Emergency History
Press the [DVD TOP MENU] button and then press the [CLEAR]
button.
The error code for all emergency history would be reset.
Example of Error code
1. 01 05 04 04 00 92 46 00
00 00 00 00 00 00 23 45
The meaning of error code is as below:
01: Communication error (No reply from syscon)
02: Syscon hung up
03: Power OFF request when syscon hung up
19: Thermal shutdown
24: MoveSledHome error
25: Mechanical move error (5 Changer)
26: Mechanical move stack error
30: DC motor adjustment error
31: DPD offset adjustment error
32: TE balance adjustment error
33: TE sensor adjustment error
34: TE loop gain adjustment error
35: FE loop gain adjustment error
36: Bad jitter after adjustment
40: Focus NG
42: Focus layer jump NG
51: Spindle stop error
52: Open kick spindle error
60: Focus on error
61: Seek fail error
62: Read Q data/ID error
70: Lead in data read fail
71: TOC read time out (CD)
80: Can’t buffering
81: Unknown media type
Emg. History Check
Laser Hours CD 999h 59min
1. 00 00 00 00
00 00 00 00
2. 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
Next Next Page Prev Prev Page
O Return to Top Menu
DVD 999h 59min
00 00 00 00
00 00 00 00
To clear the Initialize Setup Data
Press the [DVD/TUNER MENU] button and then press the
[CLEAR] button on the remote commander.
Emg. History Check
Laser Hours CD 999h 59min
Initialize setup data...
Next Next Page Prev Prev Page
O Return to Top Menu
DVD 999h 59min
23
MHC-V7D
To return to the Top Menu of Remocon Diagnosis Menu
Press the [0] button on the remote commander.
• Check Version Information
To check the version infor mation, please follow the following
procedure.
1. From the Top Menu of Remocon Diagnosis Menu, select “4.
Version information” by pressing the [4] button on the remote
commander. The following screen appears on the on-screen
display.
Version information
Firm (Main) : Ver. xxxxx
Firm (Sub) : xxxxx
RISC : xxxxx
8032 : xxxxx
Audio DSP : xxxxx
Servo DSP : xxxxx
O Return to Top Menu
To return to the Top Menu of Remocon Diagnosis Menu, press
the [0] button on the remote commander.
24
SECTION 4
ELECTRICAL CHECK
MHC-V7D
TUNER SECTION
FM AUTO STOP CHECK
set
Procedure:
1. Turn the power on.
2. Input the following signal from Signal Generator to FM
antenna input directly.
Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)
Note: Please use 75 ohm “coaxial cable” to connect SG and the
set. You cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
0 dB = 1 ȝV
signal
generator
+
75
–
3. Set to FM tuner function and scan the input FM signal with
automatic scanning.
4. Confi rm that input Frequency of A, B and C detected and
automatic scanning stops.
The stop of automatic scanning means “The station signal is
received in good condition”.
25
MHC-V7D
CD/DVD SECTION
[TEST DISC LIST]
Use the following test disc on test mode.
• CD: YEDS-18 (PART No. 3-702-101-01)
or
PATD-012 (PART No. 4-225-203-01)
HLX-A1 (PART No. J-2501-307-A)
• DVD (SL)
NTSC HLX-503 (PART No. J-6090-069-A)
or
HLX-504 (PART No. J-6090-088-A)
HLX-513 (PART No. J-2501-305-A)
PAL HLX-506 (PART No. J-6090-077-A)
• DVD (DL)
NTSC HLX-501 (PART No. J-6090-071-A)
or
HLX-505 (PART No. J-6090-089-A)
HLX-514 (PART No. J-2501-306-A)
PAL HLX-507 (PART No. J-6090-078-A)
Note: When the BASE UNIT is replaced, perform the Execute
IOP measurement
(Refer to page 22).
FOCUS BIAS CHECK
oscilloscope
(DC range)
Checking Location:
-MOTHERBOARD Board (COMPONENT SIDE)-
pin 17 (RF)pin 1 (GND)
CN302
MOTHERBOARD board
CN302 pin 17 (RF)
CN302 pin 1 (GND)
+
–
Procedure:
1. Connect the oscilloscope to CN302 pin 17 (RF) and CN302
pin 1 (GND) on the MOTHERBOARD board.
2. Press the [
] button to turn the power on, and press the
?/1
[FUNCTION] button to select DVD/CD function.
3. Set the test disc (CD: YEDS-18) on the tray and press [N]
button to playback.
4. Confi rm that oscilloscope waveform is as shown in the fi gure
below (eye pattern).
A good eye pattern means that the diamond shape () in the
center of the waveform can be clearly distinguished.
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level:
1.1 ± 0.25 Vp-p (DVDSL)
1.0 ± 0.25 Vp-p (CD)
26
SECTION 5
TROUBLESHOOTING
Check whether the state of the Cable and Outlet are normal.
If there are no problems, check circumference circuit for
Main on/Sub on Output of the Motherboard mount side.
Replaces Switching regulator if it is not up to standard.
MHC-V7D
No
Hi (3.3V)
Power OnDemo mode
Low (0V)Low (0V)
Yes
AC IN
Standby
The Power Control signal to Switching regulator is checked.
Is following power voltage OK?
Main on/Sub on
CN 4 :pin8
(1)
The Output from Switching regulator is checked.
No
Power OnDemo mode
-62.5V±5%
-25.5V±5%
+25.5V±5%
pin5
+62.5V±5%
pin7
pin8-10
-45.5V±10%
Yes
pin1
13.5V±0.5V
0V0V0V0V0V
13.5V±0.5V
0V0V0V0V0V
Standby
13.5V±0.5V
pin1
pin2-4
Is following power voltage up to standard?
CN4
CN2
END
(2)
(5)
(6)
Switching Regulator Diagnosis Flow
(3)
(4)
(1) AC input
(2) Fuse
(3) Sub Power transformer
(4) CN 4 Connector
pin1: Audio (13.5V)
pin2: Audio (GND)
pin3-4: LED (13.5V)
pin5-6: LED (GND)
pin7: AC-Det
pin8: PCON
pin9: LOW AC
(5) MAIN Power transformer
(6) CN 2 Connector
pin1: SPV (DC-45.5V)
pin2-4: -PVDD (DC-62.5V)
pin5: -VL (DC-25.5V)
pin6: GND
pin7: +VL (DC+25.5V)
pin8-10: +PVDD (DC+62.5V)
27
MHC-V7D
Checks circumference circuit for SP+/SP of IC401.
Checks circumference circuit for SL+/SL- of IC401.
Checks IC303 circumference circuit for +1.2V.
Checks IC002 (JL040) circumference circuit for +3.3V.
No
Checks CL335 for +3.3V and +1.2V REG IC303.
Does it output the power voltage of 3.3V and 1.2V?
No
Checks circumference circuit of IC301 FMO Signal.
No
Yes
Yes
Does it output the signal?
Checks CN401 SL+/SL- signal.
The Sled motor has a problem.
Replaces BU.
Checks circumference circuit of IC301 DMO Signal.
No
Yes
Does it output the signal?
Checks CN401 SP+/SP- signal.
No
Checks circumference circuit for FCS+/FCS- of IC401.
Checks circumference circuit of IC301 FOO Signal.
No
Yes
The Optical pickup has a problem.
Does it output the signal?
The Spindle motor has a problem.
Replaces BU.
Checks CN302 FCS+/FCS- signal.
No
Replaces BU.
REMOVE TOP PANEL
REMOVE SIDE PANEL
TURN ON
TRAY IN
Optical Block Diagnosis Flow (1/2)
Does Optical pickup move to inner circumference?
28
Yes
(Visual check)
Yes
Does Spindle motor rotate?
(Visual check)
Yes
Does Optical pickup do focus search?
(Visual check)
A
Checks circumference circuit of IC301 LDO1.
Checks circumference circuit of Q402.
MHC-V7D
Replaces BU if it is not up to standard.
No
Yes
The Optical pickup has a problem.
Does it output 2V when laser become luminous?
Checks JL306 (LD780) signal.
No
Replaces BU.
If it is not up to standard,
No
No
Yes
Lens cleaning is performed.
Is output level of RF signal JL317 up to standard?
Yes
RF Level = 1.05 ±0.45 Vpp
Test disc (CD: YEDS-18, DVD: HLX-503 (NTSC) or HLX-504 (PAL))
No
The Optical pickup has a problem.
Replaces BU.
A
Does laser diode become luminous?
Optical Block Diagnosis Flow (2/2)
(Visual check)
Yes
Yes
DISC IN
Yes
Is output level of RF signal JL317 up to standard?
RF Level = 1.05 ±0.45 Vpp
Test disc (CD: YEDS-18, DVD: HLX-503 (NTSC) or HLX-504 (PAL))
Yes
END
Is there no problem with Long term Aging Test (60min)?
Confirms that there is no sound skip.
29
MHC-V7D
MOTHERBOARD Board
Reinserts the cable or Exchanges.
If there are no problems, checks output of
Reinserts the cable or Exchanges.
If there are no problems, checks output of
Switching Regulator Board.
Reinserts the cable or Exchanges.
If there are no problems, checks output of
Main ON of MOTHERBOARD Board side.
No
No
Switching Regulator Board.
No
2CH DAMP Board
Checks circumference circuit of REG IC1005.
If there are no problems, exchanges IC1005.
No
Yes
Checks 13V output of CN001 1pin.
Is the power voltage OK?
No
Yes
PLAY MUSIC
2CH DAMP / MOTHERBOARD Mount Diagnosis Flow (1/2)
Yes
Is there audio output from 2CH DAMP Board?
Yes
Checks 3V output of CN001 8pin(Main ON).
Is the power voltage OK?
Checks +62.5V output of CN1001 10pin(+VH),
Yes
-62.5V output of CN1001 2pin(-VH) and -45.5V
output of CN1001 1pin -45.5V.
Is the power voltage OK?
Checks OUT terminal -50.5V output of REG IC1005.
Yes
Or, checks GND and OUT Terminal with Tester.
Is it shorted out?
B
A
30
Loading...