Yamaha DVDS-705 Service manual

DVD PLAYER

DVD-S795/S705

SERVICE MANUAL

For U, C, B, A, G modelsFor U, C, B, A, G models

For U, C, B, A, G models

For U, C, B, A, G modelsFor U, C, B, A, G models

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

IMPORT ANT: The presentation or sale of this manual to any individual or firm dose not constitute authorization, certification or

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The reseach, engineering, and service departments of Y AMAHA 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. Dischage any static electricity your body may have accu-

IMPORT ANT: T urn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.

injury , destuction 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 Y AMAHA Retailer or the appointed service representaive.

recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.

mulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss.)

DVD-S795/S705

100666

Printed in Japan

CONTENTS

SECTION 1

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....

SELF-DIAGNOSIS FUNCTION AND SERVICE MODE ............. 1-7

SERVICE PRECAUTIONS ......................................................... 1-9

SERVICE TOOLS AND EQUIPMENT ........................................ 1-9

OPERATING INSTRUCTIONS ................................................. 1-10

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 ................................. 2-3

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

14. Checking the Headphone 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

DVD-S795/S705

4. Static Electricity Countermeasures ...................................... 2-8

5. Disassembling the Clamp Base Unit.................................... 2-9

6. Disassembling the Clamp 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

1-6

SECTION 3

ABBREVIATIONS ....................................................................... 3-1

BLOCK DIAGRAM

1. OVERRALL BLOCK DIAGRAM ........................................... 3-3

2. SERVOBLOCK DIAGRAM................................................... 3-5

3. VIDEO BLOCK DIAGRAM ................................................... 3-7

4. AUDIO BLOCK DIAGRAM................................................... 3-9

SCHEMATIC DIAGRAM

POWER SUPPLY SCHEMATIC DIAGRAM (FOR U, C MODELS) ....

POWER SUPPLY SCHEMATIC DIAGRAM (FOR B, G, A MODELS)

3. ADSC (MODULE C.B.A. 1/8) SCHEMATIC DIAGRAM ..... 3-15

4. SERVO (MODULE C.B.A. 2/8) SCHEMATIC DIAGRAM... 3-17

AV DECODER (MODULE C.B.A. 3/8) SCHEMA TIC DIAGRAM ...

6. VDAC (MODULE C.B.A. 4/8) SCHEMATIC DIAGRAM ..... 3-21

7. FEP (MODULE C.B.A. 5/8) SCHEMATIC DIAGRAM ........ 3-23

8. CPU (MODULE C.B.A. 6/8) SCHEMATIC DIAGRAM........ 3-25

9. CLOCK (MODULE C.B.A. 7/8) SCHEMATIC DIAGRAM ... 3-27

10. ODC (MODULE C.B.A. 8/8) SCHEMATIC DIAGRAM ....... 3-29

11.VIDEO (MODULE C.B.A. 1/5) SCHEMATIC DIAGRAM .... 3-31

12.

ADAC C (MODULE C.B.A. 2/5) SCHEMATIC DIAGRAM...

13.

AUDIO AC-3 (MODULE C.B.A. 3/5) SCHEMATIC DIAGRAM ...

14.

AUDIO OUT (MODULE C.B.A. 4/5) SCHEMATIC DIAGRAM..

15.

OPERATION (MODULE C.B.A. 5/5) SCHEMATIC DIAGRAM...

16.

VIDEO COMP SCHEMATIC DIAGRAM (FOR U, C MODELS)

17. SCART SCHEMATIC DIAGRAM (FOR B, G MODELS) .... 3-43

18.

FRONT SW/HEAD PHONE/POWER SW SCHEMATIC DIAGRAM...

CIRCUIT BOARD DIAGRAM

1. POWER SUPPLY C.B.A. (FOR U, C MODELS) ................ 3-47

2. POWER SUPPLY C.B.A. (FOR B, G, A MODELS)............ 3-49

3. MODULE C.B.A. ................................................................ 3-51

4. MOTHER C.B.A. ................................................................ 3-55

5. FRONT SW/HEAD PHONE/POWER SW C.B.A. .............. 3-57

6. SCART C.B.A. (FOR B, G MODELS). ............................... 3-59

7. VIDEO COMP C.B.A. (FOR U, C MODELS) ..................... 3-61

SECTION 4

EXPLODED VIEWS & REPLACEMENT PARTS LIST

1. ELECTRICAL REPLACEMENT PARTS LIST...................... 4-1

2. Casing Parts & Mechanism Section................................... 4-18

3. Loading Mechanism Section.............................................. 4-21

4. Traverse Section................................................................ 4-23

5. REMOTE CONTROL TRANSMITTER...............................4-25

3-11 3-13

3-19

3-33 3-35 3-37 3-39

... 3-41

3-45

ELECTRICAL ADJUSTMENT

1. Video Output (Luminance Signal) Adjustment ................... 2-17

2. Video Output (Chrominance Signal) Adjustment ............... 2-17

3. Video Component Signal (CB) Output Adjustment ............ 2-18

SECTION 1 SPECIFICATIONS

Power requlrements: For U, C models

AC 120V,60Hz

For B, A, G models

AC 220 – 240V, 50Hz

Signal system: For U, C models

NTSC

For B, A, G models

PAL 625/50, PAL 525/60, NTSC

Weight: 7.9lbs. (3.6kg)

For G:Gold model only

4.2kg

Dimensions: 17-3/16” (W) × 3-15/16” (H) × 10-3/8” (D)

[435 (W) × 100 (H) × 263 (D) mm]

For G:Gold model only

473 (W) × 100 (H) × 263 (D) mm (excluding protrusions)

Operating temperature range:+5 to +35°C (+41 to +95°F) Operating humidlty 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:

For U, C models

Y output level: 1Vp-p (75Ω)(NTSC) C output level: 0.286Vp-p (75Ω)(NTSC) Output connector: S terminal (1 system)

For B, A, G models

Y output level: 1Vp-p (75Ω) C output level: 0.286Vp-p (75Ω) (PAL)

For B, G models

Output connector: S terminal (1 system) / AV1

For A model

Output connector: S terminal (1 system)

Video output:

Output level: 1Vp-p (75Ω)

For U, C, A models

Output connector: Pin jack (2 systems)

For B,G models

Output connector: Pin jack (2 systems)/AV1/AV2

Power consumption: For U, C models

Compact video output:

Output level: 2 Vrms (1kHz, 0dB) Output connector: Pin jack

5.1ch mixed output: 1 system (2ch)

5.1ch discrete output: 1 system (5.1ch)

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): 103dB CD audio: 100dB (EIAJ)

(4) Total harmonic distortion:

CD audio: 0.002% (EIAJ)

Digital audio output:

Optical digital output: Optical connector Coaxial digital output: Pin jack

Pick up: Wave length: 655nm

Laser power: CLASS

Specifications are subject to change without notice. Weight and dimensions are approximate.

U ........ U.S.A. model G ........ European model

C ........ Canadial model B ........ United Kindom model

A ........ Australlan model

Manufactured under license from Dolby Laboratories Licensing Corporation. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.

19W

(approx. 1W when set to the standly

mode)

For B, G models

20W (approx. 2.5W when set to the standby mode)

For A models

19W (approx. 2W when set to the standby mode)

For U, C models only

Y output level: 1Vp-p (75Ω), green CB output level: 0.7Vp-p (75Ω), blue CR output level: 0.7Vp-p (75Ω), red Output connector: Pin jack

Audio output:

DVD-S795/S705

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 Corpoation 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.

1 - 1

TO SERVICE PERSONNEL

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 0.15mF.

• Leakage current must not exceed 0.5mA.

• Be sure to test for leakage with the AC plug in both polarites.

CAUTION: USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN

THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

THE COMAPCT DISC PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL.

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

This set employs a laser. Therefore, be sure to carefully follow the instructions below when servicing.

1. Pick up

• Wave length : 655nm

• Laser power : CLASS

WARNING: CHEMICAL CONTENT NOTICE!

DVD-S795/S705

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 harms.

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 bofore handing food.

2. When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens.

1 - 2

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 be 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 suck as alminum 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, alminum 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 hamless 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).

IMPORTANT SAFETY NOTICE

There are special components used in this equipment which are imporant 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.

DVD-S795/S705

REGION CODE

1 - 3

PRECAUTION OF LASER DIODE CAUTION:

This unit utilizes a class I laser. Invisible 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 herin may result in hazardous radiation exposure.

HANDLING PRECAUTIONS FOR TRAVERSE DECK

The laser diode in the optical pickup may break down due to potentical diference caused by static electricity of clothes or human body. So be careful of electrostatic break down 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).

DVD-S795/S705

It has already been adjusted.

Pickup unit

Solder

(Magnified view)

Flexible Cable

Use a clip or other item to ground the unit.

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.

1 - 4

Wrist strap (Anti-static bracelet)

Iron plate or some metals to conduct electricity

REAR PANELS

▼ U,C models (DVD-S795/S705)

▼ B, G models

▼ G model (Gold)

▼ A model

DVD-S795/S705

1 - 5

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 repairing, 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).

• Use the self diagnosis function below when NO DISC is displayed or unit doesn't read a disc, before replacing the OPU.

"NO DISC" is displayed, unit does not play smoothly, etc.

• Use the optical pickup self-diagnosis function.

Method: With no disc in the player.

• Press the "DISPLAY" button on the remote control unit while pressing the "STILL/PAUSE" and "OPEN/CLOSE" button on the player.

Value is 50 or less

DVD-S795/S705

Check the laser drive current.

Value is more than 50

Replace the optical pickup (Refer to Assembling and Disassembling the Optical Pickup, page 2-1.)

Checkthelaserdrive currentafterreplacement.

• Writethepresentvalueinto theunitifitis40orless.

Do the optical pickup tilt adjustment. (Refer to Optical Pickup Tilt Adjustment, page 2-13.)

Display content LD○○○ ○○○

Factory preset value

Replace with a new optical pickup if the present value is more than 40.

Cause:

Damage due to static electricity during replacement.

Method: With no disc in the player.

• Press the "DISPLAY" button on the remote control unit while pressing the "PAUSE" and "OPEN/CLOSE" button on the player.

• Write the present value into the played if it is 40 or less.

Present value

Use the tilt adjustment check function.

Initialize the player. Press Pause and and Open/Close buttons on unit simultaneously.

End (Refer to Handling After Completing Repairs, page 1-9.)

▲

Writing method:

• Press the "PAUSE" button on the remote

control unit while pressing the "PAUSE" and "OPEN/CLOSE" button on the player.

1 - 6

SELF-DIAGNOSIS FUNCTION AND SERVICE MODES



1. Service Mode Table

The service mode can be activated by pressing various button combinations on the player and remote control unit.

Player buttons

PAUSE

＋

OPEN/CLOSE

STILL/PAUSE SKIP/SEARCH<< OPEN/CLOSE

Remote control unit button

6 7

DISPLAY

STILL/PAUSE

Displaying the UHF display F_ _ _

Tiltadjustment

Checkingtheregionnumbersandbroadcastsystem Checkingtheprogramversion

LightingConfirmationFanctionofDisplayTube Checkingthelaserdrivecurrent

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.

Application



Note

Refer to Self-Diagnosis Function (UHF Display)

Refer to Optical Pickup Tilt Adjustment, in page 2-13.

Check the IC6302 FLASH ROM program.

Refer to Optical Pickup SelfDiagnosis and Replacement, in page 1-6.

Procedure.

Refer to Initializing the DVD Player, in page 1-9.

,in page 1-7.

2. Self-Diagnosis Function (UHF Display)

This unit incorporates a convenient self-diagnosis function for use in troubleshooting.

Display method Display

U11 H01 H02 H03 H04 H05 H06 F0** F1** F2** F3** F4** F5** F6** F7** F8**

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.

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 IIC BUS error DSC ECC error Microprocessor error Microprocessor error

Diagnosis

Checkpoints 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.

DVD-S795/S705

1 - 7

3. Examples of Repairs Using Error Code

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

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

Malfunction example

4. Sales Demonstration Lock Function

This function prevents discs from being lost when the unit is used for sales demonstrations, by disabling the disc eject function.

DVD-S795/S705

“LOCKED” is displayed on the unit, and ordinary operation is disabled.

4-1. Setting Method

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 enagaged.)

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/SEARCH<<” and “OPEN/CLOSE” buttons simultaneously).

1 - 8

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.

1-1. Precautions

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.

1-2. Initialization Method

The player will be initialized (return to the factory preset condition) when you press the “PAUSE”, “SKIP/SERCH<<“ and “OPEN/CLOSE” buttons simultaneously. When the DVD player is initialized, “All Clear” appears on screen, it also displays “INITIALIZED”.

2. Handling After Completing Repairs

Use the following procedure to secure the traverse unit in the standby position.

2-1. Method

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.

2-2. Precautions

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.

DVD-S795/S705

SERVICE TOOLS AND EQUIPMENT

1. Service Tools and Equipment Table

Application

General

Tilt adjustment

Inspection

Others

Confirmation

Electrical adjustment

General Static electricity countermeasures

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 calbe TV monitor General tools (Screw driver etc.) Soldering iron (with ESD countermeasure) Anti-static wrist strap Conductive material (conductive sheet)

Name Number

DVDT-S15 (AX07320) or DVDT-S01 (TX946080) JZS0100 (TX946380)

JGS0099 (TX946360) JGS0098 (TX946370) × 2 RZZ0L01 (TX946400) JGS0091 (TX946260) JGS0092 (TX946270) JZS0648 (TX946410) JGS0101 (TX946390) SZZP1054C (TX946090)

PVCD_K06 (TX946090)

VJA0658 (MX605190)

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.

1 - 9

OPERATING INSTRUCTIONS

Connection

•Ensure that this player and other equipment to be connected are set to the standby mode or off, and disconnect the AC cord, bef ore commencing connection.

•Do not block ventilation holes of any of the equipment and arrange them so that air can circulate freely.

•Read through the instructions before connecting other equipment.

•Ensure that you observe the color coding when connecting audio and video cables.

•Select the appropriate screen type at the initial setting "6 TV Aspect" according to your TV set [4:3/16:9 and Standard (Direct View TV)/CRT Projector/

LCD Projector/Projection TV].

Notes:

•If the DVD/Video CD/CD player is connected to the TV through a video cassette recorder, the picture may not be played back norm ally with some DVDs.

•When playing some DVD discs, TV volume level may be lower than from some other sources, adjust the TV volume to your desired level.

•When the DVD/Video CD/CD player is connected to the TV set through the component video output connectors, the ON SCREEN informations from

the amplifier will not show on the TV screen. To show them, select the input position which is connected to the amplifier on the TV set.

Do not place the player on amplifiers or other equipment which may become hot.

Connecting to an AV amplifier containing Dolby Digital or dts (digital theater systems) decoder

When DVDs recorded in Dolby Digital or dts are played, Dolby Digital bitstream or dts bitstream is output from the player’s OPTICAL digital audio output connector or COAXIAL digital audio output connector. When the player is connected to a Dolby Digital decoder or dts decoder, you can enjoy theater-quality audio in your home. [An optical digital audio cable or coaxial digital audio cable (both optional) is required when an optional Dolby Digital decoder or dts decoder is used.]

Note:

•

When connecting an AV amplifier which contains dts decoder, be sure to select "Bitstream" at "3 dts" of the initial setting "7 Digital Audio Output". ("Off" is selected at the factory preset.) If "Off" is selected, dts bitstream is not output from the digital audio output connector.

Direction of signal flow

Optical

DVD-S795/S705

digital audio cable

(optional)

COAXIAL

DVD/LD

OPTICAL

Coaxial digital audio cable

(optional)

PCM/U DIGITAL DTS

OPTICAL

AUDIO SIGNAL

R L VIDEO S-VIDEO

VIDEO SIGNAL

DVD/

Video/audio cable

(supplied)

AUDIO OUT

6CH DISCRETE

COAXIAL

CENTER SURROUND

MAIN

MIXED 2CH

VIDEO OUT

VIDEO

DVD/

S VIDEO

S video cable

(optional)

AV amplifier with Dolby Digital/dts decoder (optional)

To component video input connectors (Y, CB, CR)

Video cable (optional)

COMPONENT VIDEO

YCBC

TV set (optional)

DVD/Video CD/CD player

AC IN

SUBWOOFER

RLR

AC cord (supplied)

To AC outlet

1 - 10

Connection

OPERATING INSTRUCTIONS

Connecting to an AV amplifier which does not contain Dolby Digital or dts (digital theater systems) decoder

This DVD/Video CD/CD player contains a Dolby Digital decoder. This enables the playback of DVDs recorded in Dolby Digital Surround or Linear PCM without the need for an optional decoder with Dolby Digital or Linear PCM processing. When the DVD/Video CD/ CD player is connected to an AV amplifier with 5.1ch input connectors, you can enjoy theater-quality audio in your home when playing discs recorded in Dolby Digital Surround or Linear PCM.

In the case of the AV amplifier with 5.1ch input connectors

6CH DISCRETE INPUT DVD/LD

CENTER

SUB

WOOFER

Audio cord

(optional)

Direction of signal flow

SURROUND

MAIN

L R

Video/audio cord

(supplied)

In the case of the AV amplifier without

5.1ch input connectors

VIDEO SIGNAL

AUDIO SIGNAL

L R

DVD/LD

S-VIDEO

S video cord

(optional)

AV amplifier without Dolby Digital/dts decoder (optional)

To component video input connectors (Y, CB, CR)

DVD-S795/S705

TV set (optional)

Video cable

(optional)

DVD/Video CD/CD player

AUDIO OUT

COAXIAL

6CH DISCRETE

CENTER SURROUND

RLR

SUBWOOFER

PCM/U DIGITAL DTS

OPTICAL

Notes:

•After connection is made, set the ì8 Speaker Settingî (such

as Yes/No and Large/Small) according to your speaker system.

•If the surround speakers are set to ìNoî at the ì8 Speaker

Settingî (see page 40), the discs recorded in Linear PCM will be played back only in 2 channels even when the center speaker is connected as well as the front speakers.

VIDEO OUT

MIXED 2CH

VIDEO

MAIN

S VIDEO

COMPONENT VIDEO

YCBC

AC IN

•DVDs recorded in Linear PCM/96 kHz sampling in which

ìCenter Speakerî is contained will also be played back only in 2 channels.

•If the player is connected to the AV amplifier as shown

above, audio recorded in dts will not be output. To enjoy dts sound, it is necessary to connect the player.

1 - 11

OPERATING INSTRUCTIONS

ON SCREEN

CLEAR

STILL/PAUSE

SELECT

OPEN/CLOSE

PLAY

SLOW/

ANGLEAUDIO

DVD

POWER

* / I

STOP

SKIP IF

TITLE

ON SCREEN RETURN

SUBTITLE

MARKER

PLAY MODE

REPEAT

A-B CLEAR

SET UP

PLAY

RETURN

SELECT

General information about OnScreen Menu Icons

This player features On-Screen Menu Icons providing various functions. A "banner" will be displayed on the TV monitor by pressing the ON SCREEN button on the remote control. Operating the cursor buttons/SELECT button on the remote control will show disc information (title/chapter/track number, elapsed playing time, audio/subtitle language, and angle) and player information (repeat play, play mode, marker, etc.). Some icons allow the settings to be changed.

Common procedures

Press ON SCREEN during play or in the stop mode.

Each time this button is pressed, the TV monitor changes as shown below.

→ On-Screen Menu Icons are not displayed

| || On-Screen Menu Icons for selecting disc information | | On-Screen Menu Icons for selecting player information |

•Some functions cannot be accessed from the stop

mode.

↓ ↓ ↓

Shuttle screen

100

DVD-S795/S705

1 1:56:37 1

OFF

3:37

PRG

3:37

PRG

ENG

L R

LPCM

PBC

OFF

ENG

Press the cursor buttons (

148k 16

the preferred item.

▲

, ) to select

▲

•The currently selected item is indicated by the yellow

frame on the On-Screen Menu Icons.

100

Press the cursor buttons (

▲, ▼

) to select

the preferred setting.

•For some functions, the setting will be registered imme-

diately; for others, SELECT or PLAY must be pressed.

•When numbers are displayed (e.g. title No.), the numeric

buttons are also effective for setting instead of the cursor buttons ( meric buttons, press SELECT to register the setting.

Press RETURN or CLEAR to clear the On-Screen Menu Icons.

Examples of On-Screen Menu Icons

(See , and for detailed illustration.)

A B C

(The screens may differ depending on the disc contents.)

•DVD ( ) •Video CD ( ) •CD ( )

For your reference:

•Depending on the type of DVD software and a TV with auto-

matic picture zoom function enabled, the On-Screen Menu Icons may not be displayed or only partially displayed on the

TV screen. In this case, change the position of the On-Screen Menu

Icons in "4 On-Screen Messages" of the initial settings.

•The color (blue, violet or green) of the On-Screen Menu

Icons can be changed.

▲, ▼

). When numbers are entered by the nu-

A B C

1 - 12

Detailed descriptions of each On-Screen Menu Icon

OPERATING INSTRUCTIONS

Screen for disc information (For DVD)

Title No. Change the title No. by using the cursor buttons (▲, ▼) or the numeric buttons and press SELECT.

1 1:56:37

Audio soundtrack language No.

Audio soundtrack language

Chapter No.

Elapsed playing time

(hour: minute: second)

1 1

Change the No. by using the cursor buttons (▲, ▼) or the numeric buttons.

ENG: English POR: Portuguese FRA: French RUS Russian DEU: German JPN: Japanese ITA: Italian CHI: Chinese ESP: Spanish KOR:Korean NLD: Dutch MAL: Malay SVE: Swedish VIE: Vietnamese NOR: Norwegian THA: Thai DAN: Danish U : Others

Change the chapter No. by using the cursor buttons (▲, ▼) or the numeric buttons and press SELECT.

Change the time by using the numeric buttons and press SELECT. It can be used to find a specific scene quickly. Example: To specify "1 hour 56 min. 37 sec.", enter "15637". (This function does not work with some discs.)

Angle No.

LPCM

ENG

48k 16b

Change the No. by using the cursor buttons (▲, ▼) or the numeric buttons.

ENG

Subtitle language No.

Subtitle language

Change the No. by using the cursor buttons (▲, ▼) or the numeric buttons.

DVD-S795/S705

16b

96k

LPCM

Audio attribute

For your reference:

•"△ ▽" around the icon means that the item can be changed using the cursor buttons (▲, ▼).

dts

Vocal

48k

1—5.1ch 1—5.1ch

--- (OFF) ON

--- (OFF)

V1o V2

V1 V2

Linear PCM ("k" stands for kHz

20b

and "b" stands for bit.)

24b

Dolby Digital dts

DVD Karaoke (Solo)

DVD Karaoke (Duet)

1 - 13

Subtitle on/off

Select "ON" or "OFF" by using the cursor buttons (▲, ▼).

OFF Subtitle is cleared.

ON Subtitle is displayed.

OPERATING INSTRUCTIONS

Detailed descriptions of each On-Screen Menu Icon

Screen for disc information (For Video CD/CD)

Track No.

Change the track No. by using the cursor buttons (▲, ▼) or the numeric buttons and press SELECT.

Elapsed playing time

(minute: second)

1 3:37 L R

Change the mode by using the cursor buttons (▲, ▼).

Left channel sound is output from the speaker (L),

Audio mode

(Video CD only)

and right channel sound from the speaker (R).

Left channel sound only is output.

Right channel sound only is output.

During CD play, display is changed by using the cursor

▲, ▼

buttons ( Elapsed playing time→

Playback control

(Video CD only) (See page 15.)

PBC

OFF

↑

Remaining time of the disc

−

Remaining time of the track

OFF Menu play is not ON.

ON Menu play is ON.

DVD-S795/S705

Note:

•Track No. and the elapsed playing time are not displayed during menu play of Video CDs with playback control.

•It is not possible to turn playback control ON or OFF using the On-Screen Menu Icons.

For your reference:

△ ▽

" around the icon means that the item can be changed using the cursor buttons (▲, ▼).

•"

1 - 14

Screen for player information

OPERATING INSTRUCTIONS

A-B repeat play

Repeat play

•DVD Cinema Dialogue

•Video CD/CD Play mode

Press SELECT during play to store location A and press SELECT again to store location B and to start repeat play between the specified two locations. Press SELECT again to return to normal play.

Select the preferred mode during play by using the cursor buttons (▲, ▼).

OFF

OFF 0

Select the preferred mode during play by using the cursor buttons (▲, ▼).

OFF

PRG

RND

---

Normal play

Chapter repeat play

Title repeat play Normal play

Track repeat play

Disc repeat play

Normal volume

Louder volume

Program play

Random play

Normal play

NOFF OFF

DVD

Video CD/ CD

Master volume

Press SELECT during play and press SELECT again at the preferred point to store a marker. (Marker no. is displayed instead of "＊".)

•To recall a marker, select

Marker

Adjust the master volume by using the cursor buttons (▲, ▼). 0 to – 127 dB or –

the preferred marker no. by using the cursor buttons ( the selection using the cursor button (▲).

•To clear a marker, select the preferred marker no. using the cursor buttons ( , ) and press

▲

CLEAR.

▲

, ) and enter

DVD-S795/S705

Select the preferred mode by using the cursor buttons (▲, ▼) and press SELECT.

N Normal mode F Fine mode S Soft mode C Cinema mode

User selection mode (Adjust the picture quality as you like.)

Cinema Image

(DVD/Video CD only)

Notes:

•Repeat play and marker functions do not work with an interactive DVD or during menu play of a Video CD with playback control.

•A-B repeat play does not work with an interactive DVD.

•It is not possible to change the play mode using the On-Screen Menu Icons.

For your reference:

•The master volume can be set and stored separately for DVD, Video CD and CD.

When U is selected and SELECT is pressed, the On-Screen Menu Icon as shown below appears.

Contrast (+ 7 to – 7) Equalizer (+ 1/0/– 1) Brightness (0 to 15)

Select the preferred item by using the cursor buttons ( , ) and select the preferred value by using the cursor buttons (▲, ▼).

0000

Color hue (+ 7 to – 7)

1 - 15

▲

OPERATING INSTRUCTIONS

Detailed descriptions of each On-Screen Menu Icon

Shuttle screen

Still/Pause Press the cursor button (▲).

Slow-motion play

(Backward)

Press the cursor button ( (DVD only)

100

Play Press the cursor button (▼).

▲

Slow-motion play

(Forward)

Rapid advance Press the cursor button ( ).Rapid reverse Press the cursor button ( ).

Press the cursor button ( ). (DVD/Video CD only)

100

▲▲

DVD-S795/S705

For your reference:

•Each time the cursor button (

•The figures appearing at both ends of the shuttle screen stand for the maximum speeds of rapid reverse and rapid advance.

(DVD: + 100/– 100, Video CD: + 40/– 40, CD: + 50/– 50)

▲

, ) is pressed, the speed of rapid reverse/advance and slow-motion play increases up to 5 steps.

▲

1 - 16

SECTION2 ASSEMBLING AND DISASSEMBLING THE CASING AND CHECKING C.B.A.s

1. Disassembly Procedure

When servicing the unit, use the following procedure to disassemble the casing and inside parts for internal inspection.

Top cover

Tray

Front panel

Rear panel

Mechanism unit

Module C.B.A.

Power SW C.B.A.

Mother C.B.A.

Power Supply C.B.A.

V. Comp C.B.A. (U, C MODELS) Scart C.B.A. (B, G MODELS)

DVD-S795/S705

2 - 1

2. Casing Parts and C.B.A. Positions

3. Service Positions

DVD-S795/S705

Note

To inspect the loading base unit, position the left side upward (as viewed from the front).

Power supply C.B.A.

TX946360

Mother C.B.A.

TX946370

Module C.B.A.

2 - 2

4. Disassembling the Top Cover

1. Remove the 4 screws.

Screw Top cover

Screw

2. Remove the 3 screws.

Screw

5. Disassembling the Tray

1. Turn the level 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.

Tab

Lever

Tab

6. Disassembling the Front Panel

1. Release the 3 tabs on the bottom.

2. Release the 2 tabs on the left and right.

DVD-S795/S705

NOTE for G: Gold Model only

Before disassembling the top cover, remove the side panels by the 4 screws.

Side panel

Screw

3. Release the 2 tabs.

4. Disconnect the 2 flexible cables.

Tab

Flexible cable

2 - 3

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.

Loading Base Unit

Screw

Connector

Screw

2. Connect the module C.B.A. to the mother C.B.A. with the extension cables for inspection.

•Extension cables: TX946370 (JGS0098) Mother C.B.A. Module C.B.A. PP4201-PS4201 PP3201-PS3201

Mother C.B.A.

PS4201

PP4201

Note

Be sure to initialize the player whenever you replace a C.B.A. (Refer to section 1-9, Initializing the DVD Player.)

PP3201

PS3201

8. Checking the Module C.B.A.

1. Remove the 2 screws.

DVD-S795/S705

Module C.B.A.

PS4201

Screw

PS3201

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).

Screw

2. Release the two tabs on the left and right.

2 - 4

10. Checking the Power Supply C.B.A.

1. Remove the 3 screws.

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)(connects the power supply C.B.A. PS1101 and the mother C.B.A. PP1101)

3. Checked by connecting the module C.B.A. and the mother C.B.A. with the extension cables. Extension cables: TBD (two) Module C.B.A. Mother C.B.A. PS3201–PP3201 PS4201–PP4201

Note

Be sure to intialize the player whenever you replace a C.B.A. (Refer to section 1-9, Initializing the DVD player.)

12. Checking the Power Switch C.B.A.

1. Remove the 2 screws.

DVD-S795/S705

11. Checking the Mother C.B.A.

1. Remove the 5 screws.

2. Release the 2 tabs.

13. Checking the Front Switch C.B.A.

1. Remove the 9 screws.

14. Checking the Headphone C.B.A.

1. Remove the 2 screws.

2 - 5

ASSEMBLING AND DISASSEMBLING THE OPTICAL PICKUP (MECHANICAL P ARTS)

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.

Top cover

Tr ay

DVD-S795/S705

Pulley gear

Front panel

Mechanism unit

Clamp base unit

Static electricity

countermeasures

Traverse unitMechanism Loading C.B.A.

Intermediate chassis

Vertical cam, Drive gear

Clamper weight

Clamper yoke

Magnet

Clamper

Deceleration gear

2 - 6

3. Lubricating the Loading Base Unit

When replacing parts, Iubricate the parts maked “XXX” in the diagram

Clamper weight

Clamper yoke

Clamp base unit

Tray

Magnet

Clamper

Traverse unit

Grease EM-30LG (TX946270)

0.01g

Intermediate chassis

Grease EM-30LG (TX946270)

0.01g

Grease EM-30LG (TX946270)

0.01g

Grease EM-30LG (TX946270)

0.01g

Belt

Pulley gear



Deceleration gear

Grease EM-30LG (TX946270)

0.01g

Drive gear

Vertical cam drive gear

Grease EM-30LG (TX946270)

0.01g

DVD-S795/S705

Grease EM-30LG (TX946270)

0.02g

Grease EM-30LG (TX946270)

0.02g

2 - 7

Mechanism Loading C.B.A.

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.

4-1. Static Electricity Countermeasure Methods

1. Ground yourself Use an anti-static wrist strap to discharge static electricity from your body.

2. Ground the workbench Lay a conductive meterial (sheet) or steel sheet on the surface where the traverse unit (optical pickup) is to be placed, then ground the sheet.

Anti-static wrist strip

Conductive material (sheet) or steel sheet

4-2. Short-circuit the laser diode

Solder the land in the flexible cable of the optical pickup.

Notes

• Be sure to do this befer 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

DVD-S795/S705

location. (Refer to page 2-7, Assembling and Disassembling the Optical Pickup (Mechanical Parts).)

Pickup unit

Flexible cable

Solder

(Magnified view)

2 - 8

Use a clip or other item to ground the unit.

Screw

Intermediate chassis

Traverse unit

Disassembling the Clamp Base Unit

1. Remove the 2 screws.

2. Release the 3 tabs on the clamper.

Loading base

Screw

Clamp base unit

6. Disassembling the Clamper Weight, Clamper Yoke, Magnet and Clamper

1. Remove the tab, and pull out the clamper.

Tab

Clamper unit

Yoke

Magnet

Screw

Clamper weight

Clamper yoke

Magnet

3-clamper tabs

Clamper

Clamper base

7. Disassembling the Traverse Unit

1. Remove the 3 screws.

DVD-S795/S705

Clamper base

Stopper

Tab

Note

Be sure to take static electricity counterneasures before disconnecting the flexible cable. (Refer to page 2-8, Static Electricity Countermeasures.)

2 - 9

+ 63 hidden pages

Yamaha DVDS-705 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual