Yamaha DV-S5270 User manual

DVD-S796/S5270
DVD-S796/DV-S5270
100711
SERVICE MANUAL
DVD PLAYER
DVD-S796/DV-S5270
SERVICE MANUAL
IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherant 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 all 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 parts replacement. Recheck all work before you apply power to the unit.
本资料由ＯＫＸＩＡ视听皮带资源库ｗｗｗ．ｏｋｘｉａ．ｃｎ提供

DVD-S796/DV-S5270
SPECIFICATIONS ................................................................ 1-1
LOCALE MANAGEMENT INFORMATION ......................... 1-1
TO SERVICE PERSONNEL ................................................ 1-2
PREVENTION OF ESD TO ES DEVICES......................... 1-3
PRECAUTION OF LASER DIODE...................................... 1-4
HANDILNG PRECAUTIONS FOR TRAVERSE DECK...... 1-4
REAR PANELS ..................................................................... 1-5
OPTICAL PICKUP SELF-DIAGNOSIS AND REPLACEMENT PROCEDURE ... 1-6
SELF-DIAGNOSIS FUNCTION AND SERVICE MODES ............ 1-7
SERVICE PRECAUTIONS ................................................... 1-9
SERVICE TOOLS AND EQUIPMENT ................................ 1-9
OPERATING INSTRUCTIONS .......................................... 1-10
CONTENTS
SECTION 1
SECTION 2
ASSEMBLING AND DISASSEMBLING THE CASING AND CHECKING
C. B. A.s
1.Disassembly Procedure ................................................. 2-1
2.Casing Parts and C.B.A. Positions .............................. 2-2
3.Service Positions ............................................................ 2-2
4.Disassembling the Top Cover ....................................... 2-3
5.Disassembling the Tray ................................................. 2-3
6.Disassembling the Front Panel ..................................... 2-3
7.Disassembling the Loading Base Unit ......................... 2-4
8.Checking the Module C.B.A. ......................................... 2-4
9.Disassembling the Rear Panel ..................................... 2-4
10.Checking the Power Supply C.B.A............................... 2-5
11.Checking the Mother C.B.A. ......................................... 2-5
12 Checking the Power Switch C.B.A. .............................. 2-5
13.Checking the Front Switch C.B.A. ................................ 2-5
ASSEMBLING AND DISASSEMBLING THE OPTICAL PICKUP
1.Handling the Optical Pickup .......................................... 2-6
2.Disassembly Procedure ................................................. 2-6
3.Lubricating the Loading Base Unit ............................... 2-7
4.Static Electricity Countermeasures ............................... 2-8
5.Disassembling the Clamp Base Unit ............................ 2-9
6.Disassembling the Clamper Weight, Clamper Yoke,
Magnet and Clamper ..................................................... 2-9
7.Disassembling the Traverse Unit .................................. 2-9
8.Disassembling the Stepping Motor Unit ..................... 2-10
9.Disassembling the Optical Pickup Unit ...................... 2-10
10.Disassembling the Nut Unit......................................... 2-11
11.Disassembling the Sub-Shaft Preload Spring ........... 2-11
12.Assembling the Optical Pickup ................................... 2-11
13.Disassembling the Spindle Motor Unit ....................... 2-12
14.Optical Pickup Tilt Adjustment .................................... 2-13
15.Disassembling the Intermediate Chassis ................... 2-15
16.Disassembling the Vertical Cam and Drive Gear ..... 2-15
17. Disassembling the Pulley Gear and Deceleration Gear .... 2-15
18.Disassembling the Mechanism Loading C.B.A. ......... 2-15
19. Lubricating the Optical Pickup and Peripheral parts ..... 2-16
ELECTRICAL CONFIRMATION
1.Video Output (Luminance Signal) Confirmation ........ 2-17
2.Video Output (Chrominance Signal) Confirmation .... 2-17
3. Video Component Signal (CB) Output Confirmation . 2-18
SECTION 3
ABBREVIATIONS ................................................................. 3-1
BLOCK DIAGRAM
1.OVERALL BLOCK DIAGRAM ....................................... 3-3
2.SERVO BLOCK DIAGRAM ........................................... 3-4
3.VIDEO BLOCK DIAGRAM (FOR U, A, R MODELS) . 3-5
4.VIDEO BLOCK DIAGRAM (FOR G, B MODEL) ......... 3-6
5.AUDIO BLOCK DIAGRAM ............................................ 3-7
INTERCONNECTION DIAGRAM
1.U, A, R MODELS ........................................................... 3-8
2.G, B MODELS ................................................................ 3-9
SCHEMATIC DIAGRAM
1.POWER SUPPLY SCHEMATIC DIAGRAM (FOR U MODEL) ...... 3-10
2. POWER SUPPLY SCHEMATIC DIAGRAM (FOR G, B, A MODELS) ..... 3-11
3.POWER SUPPLY SCHEMATIC DIAGRAM (FOR R MODEL) ...... 3-12
4. ADSC (MODULE C.B.A. 1/6) SCHEMATIC DIAGRAM ..... 3-13
5.AV DECODER (MODULE C.B.A. 2/6)
SCHEMATIC DIAGRAM (FOR U MODEL) ..................................... 3-14
6.AV DECODER (MODULE C.B.A 2/6)
SCHEMATIC DIAGRAM (FOR G, B, A, R MODELS) .......... 3-15
7. AUDIO (MODULE C.B.A. 3/6) SCHEMATIC DIAGRAM 3-16
8. FEP (MODULE C.B.A. 4/6) SCHEMATIC DIAGRAM .... 3-17
9. CPU (MODULE C.B.A. 5/6) SCHEMATIC DIAGRAM ........ 3-18
10. ODC (MODULE C.B.A. 6/6) SCHEMATIC DIAGRAM... 3-19
11.VIDEO OUT (MOTHER C.B.A. 1/4)
SCHEMATIC DIAGRAM (FOR U, A, R MODELS) ... 3-20
12.VIDEO OUT (MOTHER C.B.A 1/4)
SCHEMATIC DIAGRAM (FOR G, B MODELS) ........ 3-21
13.AUDIO OUT1 (MOTHER C.B.A. 2/4) SCHEMATIC DIAGRAM 3-22
14. AUDIO OUT2 (MOTHER C.B.A. 3/4) SCHEMATIC DIAGRAM. 3-23
15. OPERATION (MOTHER C.B.A. 4/4) SCHEMATIC DIAGRAM ...... 3-24
16. FRONT SW AND POWER SW SCHEMATIC DIAGRAM .. 3-25
17. SCART SCHEMATIC DIAGRAM (FOR G, B MODELS) ... 3-26
CIRCUIT BOARD DIAGRAM
1.POWER SUPPLY C.B.A. (FOR U MODEL) .............. 3-27
2.POWER SUPPLY C.B.A. (FOR G, B, A MODELS) .......... 3-28
3.POWER SUPPLY C.B.A. (FOR R MODEL) .............. 3-29
4.MODULE C.B.A. ........................................................... 3-30
5.MOTHER C.B.A............................................................ 3-32
6.FRONT SW AND POWER SW C.B.A. ...................... 3-33
7.SCART C.B.A. (FOR G, B MODELS) ........................ 3-34
EXPLODED VIEWS & REPLACEMENT PARTS LIST
1.Electrical Replacement Parts List ............................... 4-11
2.Casing Parts & Mechanism Section ........................... 4-13
3.Loading Mechanism Section ....................................... 4-15
4.Traverse Section .......................................................... 4-17
5.Remote Control Transmitter ........................................ 4-18
SECTION 4

DVD-S796/S5270
DVD-S796/DV-S5270
SPECIFICATIONS
Signal system: For U model
NTSC
For G, B, A, R models
PAL 625/50, PAL 525/60
Weight: 7lbs. 4oz (3.3kg)
Dimensions: 17-1/8” (W) ✕ 10-7/8” (D) ✕3-7/8” (H)
[435 (W) ✕276 (D) ✕99 (H) mm]
Operating temperature range: +50°to +35°C (+41°to +95°F)
Operating humidity range: 5 to 90% (no condensation)
Discs played:
(1) DVD-VIDEO disc
5” (12cm) single-sided, single-layer
5” (12cm) single-sided, double-layer
5” (12cm) double-sided, single-layer
3” (8cm) single-sided, single-layer
3” (8cm) single-sided, double-layer
3” (8cm) double-sided, single-layer
(2) Compact disc (CD-DA, VIDEO CD)
5” (12cm) disc
3” (8cm) disc
S-video output: Y output level: 1Vp-p (75Ω)
C output level: 0.286Vp-p (75Ω)
Output connector: S terminal (1 system)
Video output: Output level: 1Vp-p (75Ω)
Output connector: Pin jack (1 system)
Compact video output:
For U, A, R models only
Y output level: 1Vp-p (75Ω), green
PB output level: 0.7Vp-p (75Ω), blue
PR output level: 0.7Vp-p (75Ω), red
Output connector: Pin jack
Audio output:
Output level: 2 Vrms (1kHz, 0dB)
Output connector: Pin jack
Mixed output: 1 system
Subwoofer output: 1 system
Audio signal output characteristics:
(1) Frequency response:
DVD (linear audio):
2Hz to 22kHz (48kHz sampling)
2Hz to 44kHz (96kHz sampling)
CD audio:
2Hz to 20kHz (EIAJ)
(2) S/N ratio:
CD audio: 115dB (EIAJ)
(3) Dynamic range:
DVD (linear audio): 102dB
CD audio: 98dB (EIAJ)
(4) Total harmonic distortion:
CD audio: 0.0025% (EIAJ)
Digital audio output:
Optical digital output: Optical connector
Pickup: Wave length: 655nm
Laser power: CLASS II
Laser output: Max. 1.0 mW (Continuous)
Color: DVD-S796BU Black
DV-S5270BU Black
DVD-S796BG Black
DVD-S796TG Titanium
DVD-S796GG Gold
DVD-S796BB Black
DVD-S796BA Black
DVD-S796GR Gold
Specifications are subject to change without notice.
Weight and dimensions are approximate.
U ........ U.S.A. model G ........ European model
R ........ Asian model B ........ United Kindom model
A ........ Australlan model
Manufactured under license from Dolby Laboratories Licens-
ing Corporation. “Dolby” and the double-D symbol are
trademarks of Dolby Laboratories Licensing Corporation.
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.
(See page1-3, REGION CODE.)
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 techology 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 prohibited.
Power requlrements: For U model
AC 120V,60Hz
For G, B, A models
AC 220 – 240V, 50Hz
For R model
AC 110 – 240V, 50/60Hz
Power consumption: For U model
14W (approx. 2W when set to the standly
mode)
For G, B, A, R models
14W (approx. 4W when set to the standby
mode)
SECTION 1
1 - 1

DVD-S796/DV-S5270
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.
1. Critical Components Information
Components having special characteristics are marked
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.
TO SERVICE PERSONNEL
1 - 2
●Be sure to test for leakage with the AC plug in both polarites.
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
30cm away from the laser pick-up unit at all times. Do not stare the laser beam at any time.
2) Do not attempt readjustment, disassemble or repair of the laser pick-up, unless notes 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.
Laser Emitting conditions:
1) When the Top Cover is removed, and POWER 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 (5-10sec.) 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 set, you will not be exposed to
any laser emissions.
2) The laser power level can be adjusted with VR on 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.
Laser Diode Properties
Material : GaAlAs Laser output : Max.6mW
Wavelength : 660~676nm ANSI Class : Class 1
Emission duration : Continuous
* This output is the value measured at a distance of about 200mm from the objective lens surface on the Optical
Pick-up Block,

DVD-S796/S5270
DVD-S796/DV-S5270
PREVENTION OF ELECTRO STATIC DISCHARGE (ESD) TO
ELECTROSTATICALLY SENSITIVE (ES) DEVICES
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically
Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip”
components. The following techniques are used to help reduce the incidence of component damage caused by electro static discharge
(ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching
a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for
potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent
electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only a anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate
electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES
devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES divice, touch the protective material to the chassis or
circuit assembly into which the device will be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of
your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).
There are special components used in this equipment which are important for safety.
These parts are marked by in the schematic diagrams, exploded views and replacement parts list. It is
essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire, or
other hazards. Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
REGION CODE
1
4
2
5
62
3
4
5
5
2
1 - 3
CLASS 1 LASER PRODUCT
➀G, B models ➁G, B models
VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE
LASER-SÄTEILYLLE. ÄLÄ KATUO SÄTEESEEN.
VARNING! : OSYNIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN.

DVD-S796/DV-S5270
1 - 4
PRECAUTION OF LASER DIODE
CAUTION:
This unit utilizes a class II laser. Visible laser radiation is emitted from the optical pickup lens when the
unit is truned on:
1. Do not look directly into the pickup lens.
2. Do not use optical instruments to look at the pickup lens.
3. Do not adjust the preset variable resistor on the optical pickup.
4. Do not disassemble the optical pickup unit.
5. If the optical pickup is replaced, use the manufactures specified replacement pickup only.
6. Use of control or adjustment or performance of procedures other than those specified herein may result in hazardous
radiation exposure.
HANDLING PRECAUTIONS FOR TRAVERSE DECK
The laser diode in the optical pickup may break down due to
potential difference caused by static electricity of clothes or
human body.
So be careful of electrostatic breakdown during repair of the
optical pickup.
Handling of optical pickup
1. Do not subject the optical pickup to static electricity
as it is extremely sensitive to electrical shock.
2. To prevent the breakdown of the laser diode,
an antistatic shorting pin is inserted into the
flexible board (FPC Board).
When removing or connecting the short pin,
finish the job in as short times as possible.
3. Be careful not to apply excessive stress to the
flexible board (FPC Board).
4. Do not turn the variable resistor (Laser power adjustment).
It has already been adjusted.
Grounding for electrostatic breakdown prevention
1. Human body grounding.
Use the antistatic wrist strap to discharge the static
electricity from your body.
2. Work table grounding.
Put a conductive material (sheet) or steel on the area
where the optical pickup is placed and ground the sheet.
Caution:
The static electricity of your clothes will not be grounded
through the wrist strap. So take care not to let your clothes
touch the optical pickup.
Wrist strap
(Anti-static bracelet)
1M
Iron plate or some metals
to conduct electricity
Solder
(Magnified view)
Use a clip or other item
to ground the unit.
Flexible Cable
Pickup unit

DVD-S796/S5270
DVD-S796/DV-S5270
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REAR PANELS
1 - 5
 U model
 G, B models
 R model
 A model
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DVD-S796/DV-S5270
OPTICAL PICKUP SELF-DIAGNOSIS AND REPLACEMENT PROCEDURE
The optical pickup self-diagnosis function and tilt adjustment check function have been newly added to this player. When repair-
ing, use the following procedure for effective Self-diagnosis and tilt adjustment.
Be sure to use the self-diagnosis function before replacing the optical pickup when “NO DISC”is displayed. As a guideline, you
should replace the optical pickup when the value of the laser drive current is more than 50.
Note
Press the power button to turn on the power, and check the value before the unit warms up (within three minutes).
"NO DISC" is displayed,
unit does not play smoothly, etc.
Replace the optical pickup
(Refer to Assembling and
Disassembling the Optical
Pickup, page 2-1.)
Do the optical pickup
tilt adjustment.
(Refer to Optical Pickup
Tilt Adjustment, page 2-13.)
Check the laser drive
current after replacement.
•Write the present value into
the unit if it is 40 or less.
Check the laser drive current.
Value is
more than 50
Value is
50 or less
Initialize the player.
Press Pause and and
Open/Close buttons on unit
simultaneously.
End
(Refer to Handling After
Completing Repairs, page 1-9.)
Use the tilt
adjustment
check function.
Replace with a new optical pickup if the present
value is more than 40.
Cause:
Damage due to static electricity during replacement.
• Use the self diagnosis function below
when "NO DISC" is displayed or unit
doesn't read a disc, before replacing
the OPU.
• Use the optical pickup self-diagnosis function.
Method: With no disc in the player.
• Press the "ON SCREEN" button on the
remote control unit while pressing the
"PAUSE" and "OPEN/CLOSE"
button on the player.
Method: With no disc in the player.
• Press the "ON SCREEN" button on the
remote control unit while pressing the
"STILL/PAUSE" and "OPEN/CLOSE"
button on the player.
Writing method:
• Press the "PAUSE" button on the remote
control unit while pressing the "PAUSE" and
"OPEN/CLOSE" button on the player.
Display content
LDFactory
preset value
Present value
• Write the present value into
the played if it is 40 or less.
1 - 6

DVD-S796/S5270
DVD-S796/DV-S5270
SELF-DIAGNOSIS FUNCTION AND SERVICE MODES
1. Service Mode Table
2. Self-Diagnosis Function (UHF Display)
1 - 7
Application
Displaying the UHF display F_ _ _
Writing the laser drive current value after replacing
the optical pickup (do not use for anything other than
optical pickup replacement)
Initializing the DVD player
(restoring factory preset settings)
Use when replaceing a microprocessor, microprocessor
peripheral parts, or C. B. A.
Checking the program version
Tilt adjustment
Checking the region numbers and broadcast system
Checking the laser drive current
Lighting Confirmation Function of Display Tube
Remote control unit button Player buttons
PAUSE
OPEN/CLOSE
STILL/PAUSE
SKIP
OPEN/CLOSE
Note
ON SCREEN
STILL/PAUSE
Refer to Self-Diagnosis Function
(UHF Display)
,in page 1-7.
Refer to Optical Pickup Tilt
Adjustment, in page 2-13.
Check the IC6302
FLASH ROM program.
Refer to Optical Pickup Self-
Diagnosis and Replacement,
in page 1-6.
Procedure.
Refer to Initializing the DVD
Player, in page 1-9.
0
5
7
6
9
The service mode can be activated by pressing various button combinations on the player and remote control unit.
(JIT 070 to JIT 090 is normal range for a good pickup head.)
This unit incorporates a convenient self-diagnosis function for use in troubleshooting.
Display method Display Diagnosis Checkpoints
Service numbers displayed
during use.
Press the "0" button on the
remote control unit while pressing
the "STILL/PAUSE" and
"OPEN/CLOSE" button on the
player.
U11
H01
H02
H03
H04
H05
H06
F0**
F1**
F2**
F3**
F4**
F5**
F6**
F7**
F8**
Focus error
Tray loading error
Spindle servo error
Traverse error
Tracking servo error
Seek error
Power supply error
Disc format error
Disc code error
Decoder LSI error
SDRAM error
IC2001,IC2511,IC5201,pickup
IC2001,IC2511 loading motor
Spindle motor, IC2501,IC2001
Stepping motor,IC2511,IC2001
IC2001,IC2501,IC5201,pickup,disc
Stepping motor,IC2511,IC2001
IC1021,IC1121,IC1151,IC6001
If this type of error occurs,refer to
Examples of Repairs Using Error
Codes, in page 1-8.
IIC BUS error
DSC
ECC error
Microprocessor error
Microprocessor error

DVD-S796/DV-S5270
1 - 8
3. Examples of Repairs Using Error Code
4. Sales Demonstration Lock Function
Refer to this section when carrying out repairs.
Error display
F0**
F103
F4FF
F500
F501
F502
F504
F505
F506
F600
F601
F602
F603
F610
F611
F612
F620
F621
F700
F701
F702
F880
F890
F891
F8A0
F893
F894
Malfunction example
Disc, IC7001
Disc, IC7001
IC6001
Optical pickup, IC2001, IC5201, IC2511, IC2501
IC2001, IC6201
IC2501, IC2511, IC2001, IC5202
IC5202, IC2001
Disc, IC2501, IC2511, IC5202, IC2001
Disc, Optical pickup, IC2001
Disc, IC7001, IC5202, IC2001
Disc, IC7001
Disc, IC5202, IC2001
Disc, IC5202, IC2001
IC7001
IC7001, IC5202, IC2001
IC7001, IC15202,IC2001
Laser drive circuit
Laser drive circuit
IC6201
IC6201
IC6201
IC6201
IC6201
IC6201
IC6201
IC6302
IC6303
This function prevents discs from being lost when the unit is used for sales demonstrations, by disabling the disc eject function.
“LOCKED”is displayed on the unit, and ordinary operation is disabled.
The sales demonstration lock function is set by simultaneously pressing the “POWER”button of DVD Player on the remote
control unit and the “STOP”button on the main unit. (“LOCKED”is displayed when the lock function is engaged.)
4-1. Setting Method
4-2. Release Method
The function can be released using the same procedure as for setting. If the remote control unit is not at hand, the function can be
released by using the same method as for player initialization (pressing the “PAUSE”, “SKIP ”and “OPEN/CLOSE”
buttons simultaneously).

DVD-S796/S5270
DVD-S796/DV-S5270
1 - 9
SERVICE PRECAUTIONS
1. Initializing the DVD Player
Initialize the DVD player whenever you replace a microprocessor, microprocessor peripheral parts, module C.B.A or mother C.B.A.
The customer settings will return to factory preset settings when the player is initialized. Make a note of the settings and reset
them after initializing.
•When resetting, see the Initial Setting in the Operating Instructions.
1-1. Precautions
The player will be initialized (return to the factory preset condition) when you press the “PAUSE”, “SKIP “and “OPEN/CLOSE”
buttons simultaneously. When the DVD player is initialized, “All Clear”appears on screen, it also displays “INITIALIZED”.
1-2. Initialization Method
2. Handling After Completing Repairs
Use the following procedure to secure the traverse unit in the standby position.
With the power turned on:
1. Press the “OPEN/CLOSE”button to close the tray.
2. Press the “POWER”button to turn off the power.
3. Disconnect the power plug from the outlet.
2-1. Method
Do not disconnect the power plug from the outlet with the tray still open, then close the tray manually. If you were to do so, the
traverse unit would not go to the upper (standby) position, and the player could not be transported.
2-2. Precautions
SERVICE TOOLS AND EQUIPMENT
1. Service Tools and Equipment Table
2. Storing and Handling Test Discs
Surface precision is vital for DVD test discs. Be sure to store and handle them carefully.
1. Do not place discs directly onto the workbench, etc., after use.
2. Handle discs carefully in order to maintain their flatness.
Place them into their case after use and store them verically. Store discs in a cool place where they are not exposed to direct
sunlight or air from air conditioners.
3. Accurate adjustment will not be possible if the disc is warped from being placed on a surface made of glass, etc. If this
happens, use a new test disc to make optical adjustments.
4. If adjustment is done using a warped disc, the adjustment will be incorrect and some discs will not be playable.
DVDT-S15 (AAX07320) or DVDT-S01 (TX946080)
JZS0100 (TX946380) , 1.2mm
JGS0099 (TX946360)
JGS0098 (TX946370) ×2
RZZ0L01 (TX946400)
JGS0091 (TX946260)
JGS0092 (TX946270)
JZS0648 (TX946410)
JGS0101 (TX946390)
SZZP1054C (TX946090)
PVCD_K06 (TX946090)
VJA0658 (MX605190)
Name Number
DVD test disc
Hex wrench
Adjustment table
Extension cables (Power supply C.B.A. to mother C.B.A.)
Extension cable (module C.B.A. to mother C.B.A.)
Screw lock
Grease
Lubricant
Grease
CD test disc
VCD test disc
Oscilloscope
Probe
AV cable
TV monitor
General tools (Screwdriver, etc.)
Soldering iron (with ESD countermeasure)
Anti-static wrist strap
Conductive material (conductive sheet)
Application
General
Tilt adjustment
Inspection
Others
Confirmation
Electrical adjustment
General
Static electricity countermeasures

DVD-S796/DV-S5270
Owner's Manual Page
OPERATING INSTRUCTIONS
Control reference guide
Player
Remote control Owner's Manual Page
1 - 10
Standby/On button (STANDBY/ON) .......................14
Presstoswitchthe unit fromontostandby mode orviceversa.
In standby mode, the unit is still consuming a small amount of
power.
Disc tray ....................................................................14
Disc tray open/close button ( OPEN/CLOSE) .....14
Play button ( ) .......................................................14
Pause button ( ) ....................................................16
Stop button ( ).......................................................15
FL display
Virtual Surround Sound indicator (V.S.S.).............21
Skip button ( SKIP ) ....................................16
Search button ( SEARCH ).........................17
Rotates during play.
Rotatesfastclockwiseorcounterclockwiseduring
rapid advance (reverse).
Rotates slowly clockwise or counter clockwise
during slow-motion play.
Illuminates in the stop mode.
Illuminates during playback.
Flashes when the RESUME function is ON.
Illuminates during repeat play.
Illuminates in the still picture (pause) mode.
Elapsed playing time from the start of the title/track
during play.
Audio channel information recorded in the disc being
played back (e.g. 2ch or 5.1ch).
A DVD is loaded.
It is possible to switch the angle.
Illuminates during program play.
Title/chapter number
Track number
Linear PCM of 96 kHz sampling is being played.
Linear PCM of 24 bit is being played.
Top menu button (TOP MENU) ......................................14
Cursol button ( , , , ) /Enter button (ENTER) ..14
On screen button (ON SCREEN) ................................... 25
Play mode button (PLAY MODE) ...................................23
Subtitle button (SUBTITLE)............................................20
Repeat button (REPEAT) ................................................ 22
A-B repeat button (A-B) ..................................................22
Virtual Surround Sound button (V.S.S.)........................21
Setup buttons (SET UP) .................................................28
Slow/Search buttons ( , SLOW/SEARCH) ........17
Menu button (MENU) ......................................................14
Return button (RETURN) ................................................ 14
Angle button (ANGLE) ....................................................20
Audio button (AUDIO).....................................................19
Numeric buttons (1-9, 0, 10) ........................................14
•To select a 2-digit number
Example: To select track 23
Press [ 10], then [2] and [3].
Cancel button (CANCEL)................................................23
DVD VCD
DVD
VCD CD
DVD
VCD CD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Center
Surround (right)
Subwoofer
Front (right)
Surround (left)
Front (left)
POWER
STOP PAUSE PLAY
OPEN/CLOSE
SKIP
TOP MENU MENU
PLAY MODE SUBTITLE AUDIO ANGLE
ENTER
RETURNON SCREEN
123
A-B
V.S.S.
456
789
SET UPCANCEL
0 S 10
6:9 5
∫ ; 1
SLOW/
SEARCH
H/I
REPEAT
DVD
PROG.
ANGLE
96kHz 24bit
STANDBY/ON
f OPEN/CLOSE
DVD / VIDEO CD / CD
NATURAL SOUND DVD PLAYER
C SEARCH D
V.S.S.
D I G I T A L
: SKIP ;
Buttons such as function in exactly
the same way as the buttons on the
player.
1
11
17 18 19 20 21 22
15 1612 1314
87 9 10
32 4 5 6
1
1
4
3
6
5
9
23
24
25
26
27
28
31 38
37
36
35
34
33
32
30
29
>
=
>
=

DVD-S796/DV-
S5270
ASSEMBLING AND DISASSEMBLING THE CASING AND CHECKING C.B.A.s
SECTION 2
1. Disassembly Procedure
When servicing the unit, use the following procedure to disassemble the casing and inside parts for internal inspection.
Tray
Front panel
Rear panel
Power Supply
C.B.A.
Mechanism unit
Mother C.B.A.
Front SW C.B.A. and Power SW C.B.A.
Module C.B.A.
Top cover
2 - 1

DVD-S796/DV-
S5270
2. Casing Parts and C.B.A. Positions
3. Service Positions
Note
To inspect the loading base unit, position the left side upward (as viewed from the front).
2 - 2
Top cover
Module C.B.A.
Mother C.B.A.
Mechanism Loading C.B.A.
Front SW C.B.A.
Power SW C.B.A.
Power supply C.B.A.
Front panel
Mechanism
Loading C.B.A.
Module C.B.A.
AAX16610
AAX16590
Mother C.B.A.
TX946360
Power supply C.B.A.
AAX16600

DVD-S796/DV-
S5270
SERVICE MANUAL
2 - 3
4. Disassembling the Top Cover
1. Remove the 4 screws.
2. Remove the 3 screws.
5. Disassembling the Tray
6. Disassembling the Front Panel
1. Turn the lever clockwise.
2. Move the tray in the direction of the arrow until it locks.
3. Release the tab locks on the left and right, then pull out
the tray.
1. Release the 3 tabs on the bottom.
2. Release the 2 tabs on the left and right.
3. Release the 2 tabs.
4. Disconnect the 2 flexible cables.
Tab
Tab
Lever
Tab
Flexible
cable Flexible cable
Top Cover
Screw
Screw
Screw

DVD-S796/DV-
S5270
7. Disassembling the Loading
Base Unit
1. Remove the 4 screws.
2. Pull out the loading base unit vertically.
Note
There is a danger of damaging the connectors.
8. Checking the Module C.B.A.
1. Remove the screw.
2. Connect the module C.B.A. to the mother C.B.A.
extension cables for inspection.
• Extension cable: AAX16590 (VUC8026)
• Extension cable: AAX16610 (JGS0116)
Mother C.B.A. Module C.B.A.
PP4201-PS4201
PP3201-PS3201
3. Connect the mechanism loading C.B.A. to the mother
C.B.A. with the extension cables for inspection.
• Extension cable: AAX16600 (VUC8027)
Mother C.B.A. Mechanism Loading C.B.A.
PP2591-PS2591
Note
Be sure to initialize the player whenever you replace a
C.B.A. (Refer to section 1-9, Initializing the DVD Player.)
9. Disassembling the Rear Panel
1. Remove all of the screws connected to the rear panel.
(The number of screws varies according to the model).
2. Release the two tabs on the left and right.
Loading Base Unit
Screw Screw
Connector
2 - 4
Module C.B.A.
Screw
PS4201 PS3201
PS2591Mechanism
Loading C.B.A.
Mother C.B.A.PP2591
PP3201
PP4201
AAX16600
AAX16590
AAX16610
PS2591
PS4201
PS3201
Screw Screw
Screw

DVD-S796/DV-
S5270
10. Checking the Power Supply
C.B.A.
1. Remove the 3 screws.
3. Checked byconnectingthe moduleC.B.A.and themother
C.B.A. with the extension cables.
•Extension cable: AAX16590 (VUC8026)
•Extension cable: AAX16610 (JGS0116)
Module C.B.A. Mother C.B.A.
PS3201-PP3201
PS4201-PP4201
4. Checked by connecting the mechanism loading C.B.A.
and the mother C.B.A. with the extension cables.
•Extension cable: AAX16600 (VUC8027)
Mechanism loading C.B.A. Mother C.B.A.
PS2951-PP2591
2. Carefully pull out the power supply C.B.A.
Note
There is a danger of damaging the connectors.
3. Connect the power supply C.B.A. and the mother C.B.A.
with the extension cable for inspection.
•
Extension cable: TX946360 (JGS0099) (connectsthe power
supply C.B.A. PS1101 and the mother C.B.A. PP1101)
11. Checking the Mother C.B.A.
1. Remove the 4 screws.
2. Release the tab.
12. Checking the Power Switch C.B.A.
1. Remove the 4 screws.
13. Checking the Front Switch C.B.A.
1. Remove the 9 screws.
Note
Be sure to intialize the player whenever you replace a
C.B.A. (Refer to section 1-9, initializing the DVD player.)
2 - 5
PP2591
PP3201 PP4201
AAX16600 AAX16590
PS2591 PS4201
PS3201
AAX16610
Mother C.B.A.
Power SW C.B.A.
Screw
Screw
Front SW C.B.A.

DVD-S796/DV-
S5270
2 - 6
ASSEMBLING AND DISASSEMBLING THE OPTICAL PICKUP (MECHANICAL PARTS)
The optical pickup can be damaged by static electricity from your body. Be sure to take static electricity countermeasures when
working around the optical pickup.
1. Handling the Optical Pickup
The optical pickup can be damaged by static electricity from your body. Be sure to take static electricity countermeasures when
working around the optical pickup.
1. The optical pickup is an extremely high-precision mechanism. Do not subject it to strong impact.
2. To preserve the quality of the optical pickup replacement parts during transport and installation, the terminals of the laser
diode are short-circuited. After replacing the parts, use the proper procedure to return the laser diode to its original condition.
(Refer to page 2-11, Assembling the Optical Pickup.)
3. Testers cannot be used to check the laser diode of the optical pickup. The power supply inside the tester can easily damage
the laser diode.
4. Take care when handling the flexible cable because excessive force can cause it to break.
5. You cannot adjust the semifixed resistor for laser power adjustment. Do not turn it.
2. Disassembly Procedure
Use the following procedure to replace major parts.
For the assembly procedure, follow the flow chart in reverse.
Mechanism unit
Clamp base unit
Static electricity
countermeasures
Pulley gear Clamper weight
Clamper yoke
Magnet
Clamper
Traverse unitMechanism Loading C.B.A.
Intermediate chassis
Vertical cam, Drive gear
Top cover
Tray
Front panel
Deceleration gear

DVD-S796/DV-
S5270
2 - 7
3. Lubricating the Loading Base Unit
When replacing parts, Iubricate the parts maked “XXX”in the diagram
Grease EM-30LG
(TX946270)
0.01g
Grease EM-30LG
(TX946270)
0.01g
Grease EM-30LG
(TX946270)
0.01g
Grease EM-30LG
(TX946270)
0.01g
Grease EM-30LG
(TX946270)
0.01g
Grease EM-30LG
(TX946270)
0.02g
Grease EM-30LG
(TX946270)
0.02g
Grease EM-30LG
(TX946270)
0.01g
Intermediate
chassis
Traverse unit
Vertical cam
drive gear
Drive gear
Deceleration
gear
Belt
Tray
Pulley gear
Mechanism Loading C.B.A.

DVD-S796/DV-
S5270
2 - 8
4. Static Electricity Countermeasures
The laser diode inside the traverse unit (optical pickup) can be damaged by static electricity from your body. Be sure to take static
electricity countermeasures when working around the optical pickup.
1. Ground yourself
Use an anti-static wrist strap to discharge static electricity from your body.
2. Ground the workbench
Lay a conductive material (sheet) or steel sheet on the surface where the traverse unit (optical pickup) is to be placed, then
ground the sheet.
4-1. Static Electricity Countermeasure Methods
Solder the land in the flexible cable of the optical pickup.
Notes
•Be sure to do this before disconnecting the flexible cable of the optical pickup from the module C.B.A.
•Use an anti-static soldering iron to short-circuit and unshort-circuit laser diode.
(Recommended soldering iron: Hakko with ESD countermeasure)
•After you have finished repairing the laser diode, follow the correct procedure to remove the solder from the short-circuit
location. (Refer to page 2-7, Assembling and Disassembling the Optical Pickup (Mechanical Parts).)
4-2. Short-circuit the laser diode
Anti-static wrist strip
1M
Conductive material
(sheet) or steel sheet
Use a clip or other item to
ground the unit.
Flexible cable
Pickup unit
Solder
(Magnified view)