Yamaha DVD-S550 User manual
SERVICE MANUAL
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA
Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service
departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and
specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have accumu-
lated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
IMPORTANT NOTICE
100894
SERVICE MANUAL
MAINTENANCE FLOW CHART . . . . . . . . . . . . . 10–14
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 17–21
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 22–27
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
MECHANICAL PARTS LIST . . . . . . . . . . . . . . . . . . . 29
■ CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . 2–3
PREVENTION OF ELECTRO STATIC DISCHARGE . . . . . .
4
LOCALE MANAGEMENT INFORMATION . . . . . . . . 4
FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
REMOTE CONTROL PANEL . . . . . . . . . . . . . . . . . . . 6
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SERVICE HINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . 8–9
DVD-S550/DV-S5750
DVD PLAYER
DVD-S550/DV-S5750
'04.09
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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2
DVD-S550/DV-S5750
DVD-S550/DV-S5750
WALL
OUTLET
EQUIPMENT
UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
■ TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked Z
and must be replaced with parts having specifications equal
to those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
●Meter impedance should be equivalent to 1500 ohm shunted
by 0.15µF.
●Leakage current must not exceed 0.5mA.
●Be sure to test for leakage with the AC plug in both
polarities.
WARNING: Laser Safety
This product contains a laser beam component. This component may emit invisible, as well as visible radiation,
which may cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be
used during servicing of the unit.
1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from
the laser pick-up unit at all times. Do not stare at the laser beam at any time.
2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.
3) CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic
(where applicable) components may also contain traces of chemicals found by the California Health and Welfare
Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY
REASON WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or
expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands
before handling food.
Laser Emitting conditions:
1) When the Top Cover is removed, and the STANDBY/ON SW is turned to the "ON" position, the laser component will emit
a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through the
lens of the laser pick-up unit. Do not attempt any servicing during this period!
If no disc is detected, the laser will stop emitting the beam. When a disc is loaded, you will not be exposed to any laser
emissions.
2) The laser power level can be adjusted with the VR on the pick-up PWB, however, this level has been set by the factory
prior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this
manual. Adjustment of this control can increase the laser emission level from the device.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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3
DVD-S550/DV-S5750
DVD-S550/DV-S5750
INVISIBLE LASER RADIATION WHEN OPEN
DO NOT STARE INTO BEAM
CAUTION:
INVISIBLE LASER RADIATION WHEN OPEN
AVOID DIRECT EXPOSURE TO THE BEAM
DANGER:
Laser Diode Properties
Type: Semiconductor laser GaAlAs
Wave length: 650 nm (DVD)
780 nm (VCD/CD)
Output Power: 7 mW (DVD)
10 mW (VCD/CD)
Beam divergence: 60 degree
VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASER-
SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING! : OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN.
WARNING
The use of optical instruments with this product will increase eye hazard.
Repair handling should take place as much as possible with a disc loaded inside the player.
CAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN
OPEN. AVOID EXPOSURE TO BEAM.
ADVARSEL SYNLIG OG USYNLIG LASERSTRÅLING VED ÅBNING.
UNDGÅ UDSÆTTELSE FOR STRÅLING.
ADVARSEL SYNLIG OG USYNLIG LASERSTRÅLING NÅR DEKSEL
ÅPNES. UNNGÅ EKSPONERING FOR STRÅLEN.
VARNING SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR
DENNA DEL ÄR ÖPPNAD. BETRAKTA EJ STRÅLEN.
VARO! AVATTAESSA OLET ALTTIINA NÄKYVÄLLE JA
NÄKYMÄTTÖMÄLLE LASER SÄ TEILYLLE. ÄLÄ KATSO
SÄTEESEEN.
VORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG
WENN ABDECKUNG GEÖFFNET. NICHT DEM STRAHL
AUSSETSEN.
DANGER VISIBLE AND INVISIBLE LASER RADIATION WHEN
OPEN. AVOID DIRECT EXPOSURE TO BEAM.
ATTENTION RAYONNEMENT LASER VISIBLE ET INVISIBLE EN CAS
D'OUVERTURE. EXPOSITION DANGEREUSE AU
FAISCEAU
Warning for power supply
The primary side of the power supply carries live mains voltage when the player is connected to the mains even when
the player is switched off !
This primary area is not shielded so it is possible to touch copper tracks and/or components when servicing the player.
Service personnel have to take precautions to prevent touching this area or components in this area.
Note:
The screws on the DVD mechanism may never be touched, removed or re-adjusted.
Handle the DVD mechanism with care when the unit has to be exchanged!
The DVD mechanism is very sensitive for dropping or giving shocks.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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4
DVD-S550/DV-S5750
DVD-S550/DV-S5750
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■PREVENTION OF ELECTRO STATIC DISCHARGE
■LOCALE MANAGEMENT INFORMATION
Locale Management Information : This DVD player is designed and manufactured to respond to the Locale
Management Information that is recorded on a DVD disc. If the Locale number described on the DVD disc does not
correspond to the Locale number of this DVD player, this DVD player cannot play this disc.
This product incorporates copyright pro-
tection technology that is protected by
method claims of certain U.S. patents and
other intellectual property rights owned by
Macrovision Corporation and other rights
owners. Use of this copyright protection
technology must be authorized by
Macrovision Corporation, and is intended
for home and other limited viewing uses
only unless otherwise authorized by
Macrovision Corporation. Reverse engineer-
ing or disassembly is prohibited.
The laser diode in the DVD mechanism may be damaged due to static electricity from clothes or the human body. Use caution
to prevent electro static damage when servicing or handling the DVD-mechanism.
1. Grounding for electro static damage prevention
Some devices, such as the DVD player, use an optical pickup (laser diode) that will be damaged by static electricity in the
working environment. Only attempt service after ensuring that all grounding procedures have been completed.
1. Worktable grounding
Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed.
2. Human body grounding
Use an anti-static wrist strap to discharge the static electricity from your body.
1MΩ
Conductive material
(sheet) or steel sheet
Anti-static wrist strap
2. Handling Precautions for DVD mechanism
1. Handle the DVD mechanism gently, as it is an extremely high-precision assembly.
2. The flexible cable lines may break if an excessive force is applied to it. Use caution when handling the cable.
3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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5
DVD-S550/DV-S5750
DVD-S550/DV-S5750
▼DVD-S550 (U, R, K, A, B, G, E, P models)
▼DV-S5750 (U, A models)
■FRONT PANELS
■REAR PANELS
▼DVD-S550 (U model)
▼DVD-S550 (A model)
▼DVD-S550 (R model)
▼DVD-S550 (K model)
▼DVD-S550 (B, G, E models)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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6
DVD-S550/DV-S5750
DVD-S550/DV-S5750
▼DVD-S550 (P model)
■REMOTE CONTROL PANEL
▼DV-S5750 (U model)
▼DV-S5750 (A model)
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TEL 13942296513 QQ 376315150 892498299
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7
DVD-S550/DV-S5750
DVD-S550/DV-S5750
■SPECIFICATIONS
PLAYBACK SYSTEM
DVD Video
Video CD & SVCD
CD
PICTURE CD
CD-R, CD-RW
DVD+R, DVD+RW
DVD-R, DVD-RW
VIDEO PERFORMANCE
Video (CVBS) Output 1 Vpp into 75 ohm
S-Video Output Y: 1Vpp into 75 ohm
C: 0.3Vpp into 75 ohm
RGB (SCART) Output
0.7 Vpp into 75 ohm (B, G, E models)
Component Video Output Y: 1Vpp into 75 ohm
Pb/Cb Pr/Cr: 0.7Vpp into 75 ohm
AUDIO FORMAT
Digital Mpeg/Dolby Compressed Digital
Digital/DTS
PCM 16, 20, 24 bits
fs, 44.1, 48, 96 kHz
MP3(ISO 9660) 24, 32, 56, 64, 96, 128, 256 kbps
fs 16, 22.05, 24, 32, 44.1, 48 kHz
WMA 32 kbps-192 kbps, mono, stereo
(U, R, K, A, P models)
Analog Sound Stereo
AUDIO PERFORMANCE
DA Converter 24 bits
Signal-Noise (1kHz) 105 dB
Dynamic Range (1kHz) 100 dB
DVD fs 96 kHz 2 Hz - 44 kHz
fs 48 kHz 2 Hz - 22 kHz
SVCD fs 48 kHz 2 Hz - 22 kHz
fs 44.1 kHz 2 Hz - 20 kHz
CD/VCD fs 44.1 kHz 2 Hz - 20 kHz
Distortion and Noise (1kHz) 0.003%
TV STANDARD (PAL/50Hz) (NTSC/60Hz)
Number of lines 625 525
Playback Multistandard (PAL/NTSC)
CONNECTIONS
SCART Euroconnector (B, G, E models)
Y Output Cinch (green)
Pb/Cb Output Cinch (blue)
Pr/Cr Output Cinch (red)
S-Video Output Mini DIN, 4 pins
Video Output Cinch
Audio Output (L+R) Cinch
Digital Output 1 coaxial, 1 optical
IEC60958 for CDDA / LPCM/
MPEG1
IEC61937 for MPEG 2,
Dolby Digital and DTS
GENERAL
Dimensions (W x H x D) 435 x 51 x 310 mm
(17-1/8" x 2" x 12-3/16")
Weight Approx. 2.6 Kg (5 lbs. 12 oz)
Finish [DVD-S550] Gold Color (R, K models)
Black Color (U, A, B, G, E, P models)
Titanium Color (U, G, E models)
Silver Color
(B, G, E models)
[DV-S5750]
Black Color (U model)
Silver Color
(U, A models)
Power Supply AC120V, 60 Hz (U model)
AC240V, 50 Hz (A model)
AC110–240V, 50/60 Hz (R, K, P models)
AC230V, 50 Hz (B, G, E models)
Power Consumption Approx. 14W
Standby Power Consumption < 1W
ACCESSORIES
Remote Control x 1, Battery x 2,
Audio/Video Cable (U, R, K, A, P models),
Audio Pin Cable (B, G, E models),
Video Cable (B, G, E models)
* Specifications subject to change without prior notice.
U ......... U.S.A model R .......... General model
K ......... Korean model A .......... Australian model
B ......... British model G .......... European model
E .......... South European model P .......... South American model
Manufactured under license from Dolby Labo-
ratories.
“Dolby”and the double-D symbol are trade-
marks of Dolby Laboratories.
“DTS”and “DTS Digital Out”are trademarks of
Digital Theater Systems, Inc.
DivX, DivX Certified, and associated logos are
trademarks of DivXNetworks, Inc and are used
under license.
This product incorporates copyright protection technology
that is protected by method claims of certain U.S. patents
and other intellectual property rights owned by Macrovision
Corporation and other rights owners. Use of this copyright
protection technology must be authorized by Macrovision
Corporation, and is intended for home and other limited
viewing uses only unless otherwise authorized by Macrovision
Corporation. Reverse engineering or disassembly is pro-
hibited.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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8
DVD-S550/DV-S5750
DVD-S550/DV-S5750
c.
a.
b.
Tray Bottom Frame
Rear
Front
Slider
Slider
Screw Driver
■DISASSEMBLY PROCEDURES
HOW TO MANUALLY EJECT THE TRAY
a. Turn the player bottom up.
b. Move the slider in the direction indicated with a screw driver until the tray is ejected.
c. Gently pull the tray out.
●Repair Tips
1) DVD Module
The DVD Mechanism and Mono Board together as a set are called the DVD Module.
If a failure has occurred with any part of the DVD Module, be sure to replace the DVD Module as a whole.
Neither the DVD Mechanism nor Mono Board can be replaced independently.
2) Power Supply Unit
The power supply unit has to be replaced in case of failure.
3) PCB Ass’y
When the Front Board or AV Board has failed, replace the faulty board.
■SERVICE HINTS
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TEL 13942296513 QQ 376315150 892498299
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9
DVD-S550/DV-S5750
DVD-S550/DV-S5750
See EXPLODED VIEW for item numbers.
Mounting
Dismounting
2.7 mm
T10
Front Panel [101]
➔Remove 3 cable connections.
[1305][1105][1106]
➔Open Tray (see HOW TO MANUALLY
EJECT THE TRAY).
➔Unlock Tray cover and close tray.
➔Unlock Front panel from frame by
releasing successively 4 snaps (2 on the
side and 2 on the bottom).
Front (1) Display board [1100(1)]
➔Remove 4 screws [260]
(Board to Front panel).
➔Dismount board.
AV board [1002]
➔Remove 4 cable connections.
[1112][1302][1303][1305]
➔Remove 6 (U, R, K, A, P models) or
8 (B, G, E models) screws [260]
(Board to rear panel).
➔Release 2 spacers.
(Board to bottom frame).
➔Dismount board.
Front (2) Standby board [1100(2)]
➔Remove 1 screw [260].
(Board to Front panel).
➔Dismount board.
➔Remove cable connection. [1202]
Power supply unit [1600]
➔Remove 2 cable connections.
[CN101][CN202]
➔Remove 2 screws [255].
(Board to bottom frame)
➔Release 2 spacers.
(Board to bottom frame).
➔Dismount board.
MONO board
➔Remove 7 cable connections.
[1101][1102][1103][1104][1105]
[1106][1301]
➔Remove 4 screws [255] (Board to
bottom frame).
➔Dismount board.
DVD Mechanism
➔Remove 3 cable connections.
[1101][1102][1103]
➔Open tray (see HOW TO MANUALLY
EJECT THE TRAY).
➔Unlock Tray cover and close tray.
➔Remove 4 screws [256]
(DVD Mechanism to bottom).
➔Lift DVD Mechanism up slightly and
move it backward to remove.
When disassembling,use the special screw driver with such tip shape as shown in figure.
Top Cover [240]
➔Remove 5 screws [250].
(2 on side and 3 on rear
side)
➔Lift cover from rearside to
remove.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
10
DVD-S550/DV-S5750
DVD-S550/DV-S5750
■MAINTENANCE FLOW CHART
Start
AV Board
MONO Board
Power on
Are voltages
at all pins of connector (Ref 1303)
in AV Board normal ?
Is voltage
at +3V3 of power part
normal ?
A
Yes
No
Yes
No
1. Check Cable
2. Replace power supply unit if AV Board is not shorted,
otherwise find out first where the short is.
Are voltages
at pins of connector (Ref 1104)
in Mono Board
normal ?
Yes
No 1. Check Cable
2. Replace AV Board if Mono Board is not shorted, otherwise
find out first where the short is.
Are voltages
at +8V and +1V8 of power part
normal ?
Is voltage
at +5V VL of power part
normal ?
Yes
No
Yes
No
Check LD1117 (Ref 7101) and peripheral circuit.
Check L7808 (Ref 7301) and LD1117 (Ref 7303) and peripheral
circuit.
Check S12302 (Ref 7306) and peripheral circuit.
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TEL 13942296513 QQ 376315150 892498299
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11
DVD-S550/DV-S5750
DVD-S550/DV-S5750
Is
Main Clock
normal ?
Is
reset signal
normal ?
Is signal
on FLASH (Ref 7303)
normal ?
Is signal
on DRAM (Ref 7302)
normal ?
Check peripheral circuit of FLASH (Ref 7303)
Check peripheral circuit of DRAM (Ref 7302)
A
B
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Check 74HCU04 (Ref 7103) and
peripheral circuit.
Check NCP303 (Ref 7102) and
peripheral circuit.
Check MT1389 (Ref 7112) and
peripheral circuit.
Does the tray
automatically close when
it is open?
Are signals TROUT
(Pin 48 of MT1389) and TRIN
(Pin 49 of MT1389)
correct ?
Are signals
TRCLOSE & TROPEN
correct ?
Are signals
LOAD+ & LOAD-
correct ?
Check the position-switch on
the DVD mechanism
Check the circuit between
MT1389 and MM1646
Check MM1646 and peripheral
circuit
No No
No
Yes
Yes
No
Yes
Yes
Check the circuits connecting
to the DVD mechanism Board Ref Name
MONO 7111 MM1646
MONO 7112 MT1389
Is logo displayed
on TV screen?
Is image signal
at connector (Ref 1301) in
Mono Board normal?
Is image signal
at output terminal in AV
Board normal?
Check TV connection cable.
Check video filter circuit and
amplification circuit in AV board.
AV Board
MONO Board MONO Board
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TEL 13942296513 QQ 376315150 892498299
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12
DVD-S550/DV-S5750
DVD-S550/DV-S5750
B
C
Is signal
STBY (Pin 1 of MM1646)
high level ?
Check the STBY circuit
Is signal FMO
(Pin 5 of MM1646) more
than 1.4V ?
Are signals SL+
(Pin 11 of MM1646) & SL-
(Pin 12 of MM1646)
correct ?
Check the copper trace or cable
connected to the DVD
mechanism
Check the FMO circuit
No No
Ye s
No
Ye s
Ye s
No
Ye s
Does
Optical Pick Up move to find
a disc ?
Has FOO
(Pin 3 of MM1646)
any signal?
1. Check the signal from
MT1389 to MM1646
2. Maybe MM1389 is not
working
Are signals F+
(Pin 14 of MM1646) & F-
(Pin 13 of MM1646)
correct ?
Are signals LDO1
(Pin 23 of MT1389) & LDO2
(Pin 22 of MT1389)
correct ?
Check the peripheral circuit of
MM1646
Check MM1646 and
peripheral circuit
Check the cable and circuit
between the DVD mechanism
and MM1646
No No
Ye s
Ye s
No
Ye s
Board Ref Name
MONO 7111 MM1646
MONO 7112 MT1389
Does sled
automatically move to inside
when it is outside ?
When read
disc, is Laser on OK ?
No
Is voltage
of +L_V33 OK ?
Check connection circuit of
the DVD mechanism
Optical Pick Up may be
damaged
Check peripheral circuit of
MT1389
Check peripheral circuit of
two transistors (Ref 7106
& 7107)
Check peripheral circuit of
two transistors (Ref 7106
& 7107)
No
No
Ye s
Ye s
Is a disc loaded ?
Ye s
Laser off
No
Ye s
MONO Board
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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13
DVD-S550/DV-S5750
DVD-S550/DV-S5750
D
C
Is Focus on OK ? No Check circuit between Optical
Pick Up and MT1389
No
Yes
Is any signal
on pins A B C D E F of
MT1389 turned
ON ?
Yes
Yes
Is Spindle on OK ? No
Are signals SP+
(Pin 17 of MM1646) & SP-
(Pin 18 of MM1646)
correct ?
Check connection between
spindle driver and MM1646
Check MM1646 and its
peripheral circuit
No
No
Yes
Yes
Is DMO
(pin 37 of MT1389)
normal ?
Check MT1389 and its
peripheral circuit.
Check MT1389 and its
peripheral circuit.
Board Ref Name
MONO 7111 MM1646
MONO 7112 MT1389
Is Track on OK ? No Is signal TRO
(pin 41 of MT1389)
normal ?
Check connection between
Optical Pick Up and MM1646
Check connection between
MT1389 (pin 41) and MM1646
(pin 24)
No
Yes
Are signals T+
(Pin 16 of MM1646) & T-
(Pin 15 of MM1646)
correct ?
No
Yes
Yes
Check MM1646 and its
peripheral circuit.
Is disk READY ? No
Yes
Check cable and circuit
between DVD mechanism and
MT1389
MONO Board
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TEL 13942296513 QQ 376315150 892498299
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14
DVD-S550/DV-S5750
DVD-S550/DV-S5750
D
Is audio signal normal ? No
Is output signal
correct ?
Check circuit of filter,
amplifier, and mute etc.
Check AKM4382A and its
periperal circuit
No
No
Yes
Does AKM4382A
receive correct data ?
Check connection between
MT1389 and AKM4382A
Yes
Are TSOP2236,
FL display and Key function
OK ?
No No
Do TSOP2236
and uPD16312 communicate
with MT1389 ?
Check connection between
MT1389 and uPD16312 and
their periperal circuit
Yes
Check Remote Control
Check KEY matrix
Check connection of FL display
Yes
END
Yes
Board Ref Name
DISPLAY 7100 uPD16312
DISPLAY 7102 TSOP2236
MONO 7111 MM1646
MONO 7112 MT1389
AV 7234 AK4382A
AV Board
DISPLAY Board
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TEL 13942296513 QQ 376315150 892498299
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ABCDEFGH
1
2
3
4
5
6
DVD-S550/DV-S5750
15
DVD MECHANISM
ASA + DV34 POWER SUPPLY UNIT
FRONT (2) STANDBY BOARD
FRONT (1) DISPLAY BOARD
MONO BOARD
AV BOARD
FTD DISPLAY
STANDBY / ON
MTK1389
8k byte
EEPROM
+/-12V, +5v, +3V, -24V
ADG733BRU
2CH
AUDIO
DAC
AUDIO OUT
L / R
VIDEO OUT DIGITAL OUT
Y
S VIDEO VIDEO
OPTICAL COAXIAL
PB/CBPR/CR
AV (SCART)
(B, G, E models only)
64M bit
DRAM
8M bit
FLASH
MOTOR
DRIVER
1201
1100
GRID
µPROCESSOR
µPC16312
7100
DATA/CLK/STB IR
7111
7112 7301
72347233 7105 1103
1113
13071300 7311
1109,
1110
7108, 7109
7302
7303
1202
1106 1105
1104 1301
1301 1112 1305 1303
CN202
11011102
CN101
11021103 1101
7102
TACT SWITCH IR
SEGMENT
■BLOCK DIAGRAM
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
ABCDEFGH
1
2
3
4
5
6
DVD-S550/DV-S5750
16
1
1
1
1
1
1
26
26
1
1
1
1100 (1)
FRONT (1)
DISPLAY BOARD
1600
PSU
1200
AV BOARD
1300
MONO BOARD
1300
DVD MECHANISM
(ASA)
1100 (2)
FRONT (2)
STANDBY BOARD
CN101
Interface connection
Audio Signal Dig Aud Sig Video Signal
COAXIAL COMPONENT
Y, P
R
/C
R
, P
B
/C
B
L/R OUT OPTICAL S-Video
CVBS
SCART
+5VL
+12VL
GND
+5VSTBY
-24V
VSTB
VSDA
VSCK
GND_D
PCM_LRCK
PCS
STBY
VOL_A
VOL_B
STBY
GND
STB_SW
+5D
+3V3
RxD
TxD
GND
GND
+D
-D
+3V3
SL+
SL-
GND
LIMIT
SP+
SP-
LOAD-
LOAD+
TROUT
GND
TRIN
5V
+12VL
GND
+5V_EVER
-24V
VSTB
VSDA
VSCK
GND
46kHz
IR
io Power ON
NC
LED5
+3V3
+3V3
GND
+12V
+12STBY
GND
+5V
GND
-12V
GND
-24V
STDBY CONTROL
GND
TU_SD
L2
S1-L3-1
S0-L3-0
AV_MUTE
GND
Y
GND
C
GND
CVBS
GND
G_Y
GND
B_Cb
GND
R_Cr
GND
PCM_LRCK
PCM_LTRT
GND
PCM_MCLK
PCM_SCLK
GND
SPDIF_OUT
GND
PCM_MIC_IN
GND
MIC_DET
GND-LD
DVD_LD
NC
HFM
MD
CD_LD
VD_DVD
VD_CD
NC
E
VCC
Vref
GND-PD
F
B
A
RF
CD/DVD
C
d
T-
T+
F+
F-
GND
GND
+1V8_SENSE
+1V8
+1V8
+5VL
+5VL
+5VL
GND
+8V
GND
STBY
RDS_DAT
VSCK
VSDA
GND
GND
GND
+1V8_SENSE
+1V8
+1V8
+5VL
+5VL
+5VL
GND
+8V
GND
STBY
RDS_DAT
VSCK
VSDA
GND
GND
TU_SD
L2
S1-L3-1
S0-L3-0
AV_MUTE
GND
Y
GND
C
GND
CVBS
GND
G_Y
GND
B_Cb
GND
R_Cr
GND
PCM_LRCK
PCM_LTRT
GND
PCM_MCLK
PCM_SCLK
GND
SPDIF_OUT
GND
PCM_MIC_IN
GND
MIC_DET
For Line Out
To control DAC
■WIRING DIAGRAM
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TEL 13942296513 QQ 376315150 892498299
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DVD-S550/DV-S5750
17
B
1
A
1
FRONT(2) STANDBY BOARD 1202
Page 19
FRONT(1) DISPLAY BOARD 1102
Page 18
B
6
AV BOARD 1301
Page 20
DVD MECHANISM DVD MECHANISM
B
4
AV BOARD 1112
Page 20
■PRINTED CIRCUIT BOARD
FOR INFORMATION ONLY (NO SERVICE PARTS WILL BE AVAILABLE)
The first digit of a component indicates the component type.
1xxx : Connector 3xxx : Resistor 5xxx : Coil 7xxx : IC, Transistor, FET
2xxx : Capacitor 4xxx : SMD jumper 6xxx : Diode 9xxx : Wire jumper
MONO Board-Top View MONO Board-Bottom View
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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http://www.xiaoyu163.com
DVD-S550/DV-S5750
18
A
1
MONO BOARD 1105
Page 17
A
1
AV BOARD 1305
Page 20
■PRINTED CIRCUIT BOARD
FOR INFORMATION ONLY (NO SERVICE PARTS WILL BE AVAILABLE)
The first digit of a component indicates the component type.
1xxx : Connector 3xxx : Resistor 5xxx : Coil 7xxx : IC, Transistor, FET
2xxx : Capacitor 4xxx : SMD jumper 6xxx : Diode 9xxx : Wire jumper
FRONT (1) Display Board-Top View
FRONT (1) Display Board-Bottom View
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1
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Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
DVD-S550/DV-S5750
19
A
1
MONO BOARD 1106
Page 17
■PRINTED CIRCUIT BOARD
FOR INFORMATION ONLY (NO SERVICE PARTS WILL BE AVAILABLE)
FRONT (2) Standby Board-Top View
The first digit of a component indicates the component type.
1xxx : Connector 3xxx : Resistor 5xxx : Coil 7xxx : IC, Transistor, FET
2xxx : Capacitor 4xxx : SMD jumper 6xxx : Diode 9xxx : Wire jumper
FRONT (2) Standby Board-Bottom View
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1
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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DVD-S550/DV-S5750
20
A11
FRONT(1) DISPLAY BOARD 1101
Page 18
D1
MONO BOARD 1301
Page 17
U, R, K, A, P models only
U, R, K, A, P
models only
U, R, K, A, P
models only
U, R, K, A, P models only
B, G, E models only
A2
MONO BOARD 1104
Page 17
POWER SUPPLY UNIT CN202
DIGITAL OUT AUDIO OUT
COAXIAL
OPTICAL AV(SCART) L/RVIDEO
S-VIDEO
P
R
/C
R
Y
P
B
/C
B
VIDEO OUT
■PRINTED CIRCUIT BOARD
FOR INFORMATION ONLY (NO SERVICE PARTS WILL BE AVAILABLE) AV Board-Top View
The first digit of a component indicates the component type.
1xxx : Connector 3xxx : Resistor 5xxx : Coil 7xxx : IC, Transistor, FET
2xxx : Capacitor 4xxx : SMD jumper 6xxx : Diode 9xxx : Wire jumper
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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