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Toshiba SD-2050 Service Manual

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FILE NO. 810-200005
SERVICE MANUAL
DIGITAL VIDEO
DVD VIDEO PLAYER
SD-2050
May, 2000 s

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Summary of Contents for Toshiba SD-2050

  • Page 1 FILE NO. 810-200005 SERVICE MANUAL DIGITAL VIDEO DVD VIDEO PLAYER SD-2050 May, 2000 s...
  • Page 2 LASER BEAM CAUTION LABEL When the power supply is being turned on, you may not remove this laser cautions label. If it removes, radiation of a laser may be recceived. PREPARATION OF SERVICING Pickup Head consists of a laser diode that is very susceptible to external static electricity. Although it operates properly after replacement, if it was subject to electrostatic discharge during replacement, its life might be shortened.

  • Page 3: Safety Precautions

    SAFETY NOTICE SAFETY PRECAUTIONS LEAKAGE CURRENT CHECK Measure the AC voltage across the 1500 Ω resistor. Plug the AC line cord directly into a 120V AC outlet (do not use an isolation transformer for this check). Use an The test must be conducted with the AC switch on and AC voltmeter, having 5000 Ω...

  • Page 4: Table Of Contents

    CONTENTS SECTION 1 GENERAL DESCRIPTIONS 3. TROUBLESHOOTING 1. OPERATING INSTRUCTIONS Specifications 3-1. Main Circuit 3-1-1. Servo System 2. LOCATION OF MAIN PARTS AND 3-1-2. Location Diagram of Servo Test Point MECHANISM PARTS 2-1. Location of Main Parts 2-2. Location of Mechanism Parts SECTION 2 PART REPLACEMENT AND ADJUSTMENT PROCEDURES 1-3.

  • Page 5: Operating Instructions

    SECTION 1 GENERAL DESCRIPTIONS 1. OPERATING INSTRUCTIONS...

  • Page 6: Introduction

    - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. WARNING: Changes or modifications made to this equipment, not expressly approved by Toshiba, or parties authorized by Toshiba, could void the user’s authority to operate the equipment.
  • Page 7 Retain this information for future reference. Location of the required label PRODUCT IS CERTIFIED BY THE MANUFACTURER TO COMPLY WITH DHHS RULE 21CFR SUBCHAPTER J APPLICABLE AT THE DATE OF MANUFACTURE. MANUFACTURED SERIAL NO TOSHIBA CORPORATION 1-1,SHIBAURA 1-CHOME,MINATO-KU, TOKYO 105-8001,JAPAN...

  • Page 8: Important Safety Instructions

    Introduction IMPORTANT SAFETY INSTRUCTIONS CAUTION: PLEASE READ AND OBSERVE ALL WARNINGS AND INSTRUCTIONS GIVEN IN THIS OWNER’S MANUAL AND THOSE MARKED ON THE UNIT. RETAIN THIS BOOKLET FOR FUTURE REFERENCE. This set has been designed and manufactured to assure personal safety. Improper use can result in electric shock or fire hazard.
  • Page 9 6. Water and Moisture Do not use this product near water - for example, near a bath tub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool and the like. 7. Cleaning Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners.
  • Page 10 Introduction IMPORTANT SAFETY INSTRUCTIONS 13. Accessories Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product.
  • Page 11 19. Servicing Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel. 20. Replacement Parts When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part.

  • Page 12: Precautions

    Introduction Precautions Notes on handling Notes on moisture condensation When shipping the DVD video player, the original Moisture condensation damages the DVD video shipping carton and packing materials come in handy. player. Please read the following carefully. For maximum protection, repack the unit as it was Moisture condensation occurs, for example, when you originally packed at the factory.

  • Page 13: Notes On Discs

    Notes on Discs On handling discs Structure of disc contents Do not touch the playback side of the disc. Normally, DVD video discs are divided into titles, and the titles are sub-divided into chapters. VIDEO CDs/audio CDs are divided into tracks. DVD video disc DVD video disc Title 1...

  • Page 14: Notes On Region Numbers

    Introduction Notes on Discs (continued) About this owner’s manual Playable discs This owner’s manual explains the basic instructions of This DVD video player can play the following discs. this DVD video player. Some DVD video discs are Maximum produced in a manner that allows specific or limited Disc Disc Mark Contents...

  • Page 15: Table Of Contents

    Table of Contents Introduction Advanced playback SAFETY PRECAUTIONS ......2 Accessing a Specific Location Directly .. 26 Entering the time of the desired location ..26 IMPORTANT SAFETY INSTRUCTIONS ... 4 Playing Repeatedly ......... 27 Precautions ..........8 Repeating a title, chapter, or track ....27 Notes on Discs ..........

  • Page 16: Identification Of Controls

    Introduction Identification of Controls See the page in for details. Front panel OPEN/CLOSE 1/2 buttons POWER indicator STOP button Disc tray PLAY button PLAY OPEN/ CLOSE OPEN/ CLOSE STOP POWER DISC-1 DISC-2 PAUSE DISC SELECT SKIP DVD display PAUSE button SKIP buttons DISC-1/2 indicators POWER button...

  • Page 17: Dvd Display

    Repeated pressing of the FL DIMMER button on DVD display the remote control changes the brightness of the display. FL DIMMER Dimmed Normal Total playing time/remaining time/elapsed time indicators Play mode indicator Disc number indicator Memory playback indicator Title/track number indicator Chapter number indicator DISC TITLE TRK INDEX...

  • Page 18: Remote Control

    Introduction Identification of Controls (continued) The instructions in this manual describe the functions on the remote control. See the page in for details. Remote control POWER button DISC SELECT button POWER DISC SELECT FL DIMMER SETUP button FL DIMMER button SETUP DISPLAY ZOOM...

  • Page 19: Loading Batteries

    Loading batteries Operating with the remote control Open the cover. Point the remote control at the remote sensor and press the buttons. 30¡ 30¡ Within about 7 m (23 feet) Insert batteries (AA size). Distance: About 7 m (23 feet) from the front of the remote sensor Angle: About 30°...

  • Page 20: Connections

    Connections Connecting to a TV Connect the DVD video player to your TV. For details of output sound, see Connecting to a TV Signal flow VIDEO OUT AC IN VIDEO AUDIO OUT BITSTREAM/ ANALOG (red) (white) (yellow) To wall outlet To S VIDEO To ANALOG To VIDEO OUT...

  • Page 21: Connecting To An Audio System And Tv Equipped With Colorstream

    ® Connecting to an audio system and TV equipped with ColorStream (Component video) inputs Signal flow VIDEO OUT AC IN VIDEO AUDIO OUT BITSTREAM/ ANALOG To P To P To Y (red) (white) To wall outlet VIDEO VIDEO VIDEO To ANALOG AUDIO OUT To audio inputs of the amplifier...

  • Page 22: Connecting To Optional Equipment

    Connections Connecting to Optional Equipment You can enjoy high quality dynamic sounds by connecting the DVD video player to optional audio equipment. For connection to your TV, see “Connecting to a TV” 16 17 : Front speaker : Center speaker For details of output sound, see : Rear speaker : Signal flow...

  • Page 23: Connecting To An Amplifier Equipped With A Dts Decoder

    Warning • Do not set “Audio Out Select” to “Bitstream” from the on-screen displays unless you are connecting (via the 35 39 BITSTREAM/PCM AUDIO OUT jack) an AV decoder that has the Dolby Digital, Digital Theater Systems (DTS) or MPEG2 decoding function.

  • Page 24: Basic Playback

    TOSHIBA Select the appropriate the correct guide on the disc tray. If the disc is out of Thank you for your purchase of this TOSHIBA DVD Player. Please make a selection on-screen language. the guide, it may damage the disc and cause the for On-Screen Language and your TV shape and press ENTER button on your remote control.
  • Page 25 To obtain a higher quality picture Occasionally, some picture noise not usually visible during a normal broadcast may appear on the TV screen while playing a DVD video disc because the high SETUP resolution pictures on these discs include a lot of information. While the amount of noise depends on the TV you use with this DVD video player, you should generally TOP MENU reduce the sharpness adjustment on your TV when viewing DVD video discs.

  • Page 26: Playing Fast In Reverse Or Forward Direction

    Basic playback Playing a Disc (continued) You can play discs at various speeds, and resume playback from the location where you stopped playback. STOP PAUSE/STEP PLAY SLOW Playing fast in reverse or forward direction To resume normal playback Press REV or FWD during playback. Press PLAY.

  • Page 27: Playing In Slow-Motion

    Playing in slow-motion To resume normal playback Press SLOW during playback. Press PLAY. SLOW Each time you press the SLOW PLAY button, the slow-motion speed changes. TV screen Notes • The sound is muted during slow-motion playback. • The playback speed may differ depending on the disc. 1/2 the normal 1/4 the normal 1/8 the normal...

  • Page 28: Locating A Specific Title, Chapter, Or Track

    Basic playback Locating a Specific Title, Chapter, or Track Normally, DVD video discs are divided into titles, and the titles are sub-divided into chapters. VIDEO CDs and audio CDs are divided into tracks. You can quickly locate any specific title, chapter, or track. DVD video disc Title 1 Title 2...

  • Page 29: Locating A Specific Chapter Or Track Directly

    TOP MENU Number buttons ENTER CLEAR PLAY SKIP Locating a specific chapter or track directly Press T. Press PLAY. Skip steps 1 and 2 if you are using a VIDEO CD/ PLAY Playback starts from the selected audio CD. chapter or track. SEARCH Title : To select a title and chapter number at the same...

  • Page 30: Advanced Playback

    Advanced playback Accessing a Specific Location Directly You can access a specific location by entering its corresponding time (hours, minutes, seconds). Entering the time of the desired location Notes Press T twice. • Some discs may not respond to this process. •...

  • Page 31: Playing Repeatedly

    Playing Repeatedly You can play a specific title, chapter, track, or segment repeatedly. CLEAR PLAY REPEAT A-B RPT Repeating a title, chapter, or track Press PLAY. Press REPEAT. The DVD video player starts repeat REPEAT Each time you press the REPEAT PLAY playback.

  • Page 32: Playing In A Favorite Order

    Advanced playback Playing in a Favorite Order DISPLAY You can combine your favorite titles, chapters, or tracks and play them in the order you determine. You can program up to 28 selections into the memory. (Memory playback) Title: 2 Title: 2 Title: 1 Chapter: 25 Chapter: 12...

  • Page 33: Playing In Random Order

    Playing in Random Order You can play titles, chapters within a title, or tracks in random order. (Random playback) Title: 1 Chapter: 3 CLEAR Title: 2 Title: 3 Chapter: 2 Chapter: 1 Playing titles, chapters or tracks in random order To resume normal playback Press RANDOM.

  • Page 34: Zooming A Picture

    Advanced playback Zooming a Picture You can magnify areas within a picture. ZOOM RETURN CLEAR Zooming a picture To resume normal playback Press ZOOM during normal, slow or still Press ZOOM repeatedly so that “Zoom Off” appears. playback. ZOOM ZOOM As you repeatedly press the ZOOM button, the magnification level increases.

  • Page 35: Selecting The Camera Angle

    Selecting the Camera Angle If the scene was recorded from multiple angles, you can easily change the camera angle of the scene you are watching. 1, 2 CLEAR Changing the camera angle To turn off the angle number display Press ANGLE while playing a scene Press CLEAR.

  • Page 36: Selecting Subtitles

    Advanced playback Selecting Subtitles You can display subtitles on the TV screen and select a subtitle language from those included on the DVD video disc. SUBTITLE CLEAR Good evening! Bonsoir! ¡Buenas tardes! Selecting a subtitle language To turn subtitles on or off Press SUBTITLE during playback.

  • Page 37: Selecting A Language

    Selecting a Language You can select a preferred language and sound recording system from those included on the DVD video disc. 1, 2 Good morning! ¡Buenos días! Bonjour! CLEAR Selecting a playback audio setting Press AUDIO during playback. Press AUDIO or while the audio setting is displayed on the TV screen.

  • Page 38: Viewing The Operational Information And Dvd/Cd-Text

    Advanced playback Viewing the Operational Information and DVD/CD-Text DISPLAY You can view information about a disc and its operational status on the TV screen. Checking the operational status Press DISPLAY during stop. Each time you press the DISPLAY button, the on-screen display appears as follows. DISPLAY Current track number Current title number...

  • Page 39: Function Setup

    Function setup Customizing the Function Settings You can change the default settings to customize performance to your preference. 1, 6 RETURN LANGUAGE PICTURE AUDIO DISPLAY OPERATION 3, 4 Setting procedure Press to select the setting you Press SETUP during stop. want to change, then press ENTER.
  • Page 40 Function setup Setting Details Page On-Screen Language To select a preferred language for on-screen displays. Disc Menu Language To select a preferred language for disc menus. LANGUAGE Audio Language To select a preferred language for the sound track. Subtitle Language To select a preferred language for subtitles.

  • Page 41: Setting Details

    Customizing the Function Settings (continued) Setting details Audio Language PICTURE AUDIO DISPLAY OPERATION LANGUAGE English: To play sound tracks in English. On-Screen Language French: To play sound tracks in French. Disc Menu Language LANGUAGE Audio Language Spanish: To play sound tracks in Spanish. Subtitle Language –...

  • Page 42: Others

    Function setup Customizing the Function Settings (continued) Setting details (Continued) LANGUAGE AUDIO DISPLAY OPERATION PICTURE 3) Press the buttons to shift and select the TV Shape 4 : 3LB second character by pressing the Black Level NRML PICTURE buttons. PICTURE DISPLAY OPERATION AUDIO...
  • Page 43 Karaoke Vocal DISPLAY OPERATION LANGUAGE PICTURE AUDIO Off: The primary vocal is not output. Audio Out Select Bitstream On: The primary vocal is output when it is recorded Dynamic Range Control AUDIO Karaoke Vocal on the disc. Notes • The vocal output feature is used during playback of Dolby Digital (multi-channel) recorded DVD KARAOKE discs.
  • Page 44 Function setup Customizing the Function Settings (continued) Setting details OPERATION LANGUAGE PICTURE AUDIO LANGUAGE PICTURE AUDIO DISPLAY DISPLAY OPERATION On-Screen Displays Pause/Still Auto OPERATION DISPLAY OSD Background Color Gray Parental Lock Screen Saver Remote Confirmation Title Stop On-Screen Displays Pause/Still Off: Operational modes (e.g.
  • Page 45 1) Press the number buttons to create a personal To change your 4-digit security code 4-digit security code, then press ENTER. 1) After selecting “On” or “Off,” press the STOP If you make a mistake before pressing the button four times, then press the ENTER ENTER button, press the CLEAR button and button.

  • Page 46: Others

    Others Table of Languages Table of languages and their abbreviations Abbreviation Language Abbreviation Language Abbreviation Language – – – No alternate Guarani Portuguese language Gujarati Quechua CHI (ZH) Chinese Hausa Rhaeto-Romance DUT (NL) Dutch Hindi Kirundi ENG (EN) English Croatian Rumanian FRE (FR) French...

  • Page 47: Before Calling Service Personnel

    Before Calling Service Personnel Check the following guide for the possible cause of a problem before contacting service. Symptoms and correction Symptom Cause Correction Page No power. • The power plug is disconnected. • Connect the power plug securely into the wall outlet.

  • Page 48: Specifications

    Others Specifications DVD video player / outputs / supplied accessories DVD Video Player Power supply 120 V AC, 60 Hz Power consumption 14 W Mass 3.5 kg 430 × 98 × 307 mm (W/H/D) External dimensions Signal system Standard NTSC Laser Semiconductor laser, wavelength 650 nm Frequency range...

  • Page 49: Limited Warranty Dvd Video Player

    LIMITED WARRANTY DVD VIDEO PLAYER Toshiba America Consumer Products, Inc. (“TACP”), Toshiba Hawaii (“THI”) and Toshiba Canada Limited (“TCL”) make the following limited warranties. These limited warranties extend to original purchaser or any person receiving this set as a gift from the original purchaser and to no other purchaser or transferee.

  • Page 50: Troubleshooting

    Canadian consumers are requested to complete the special Canadian “Warranty Registration Form” enclosed, and forward this completed form with a copy of bill of sale to TOSHIBA OF CANADA to “Register and Validate” their warranty. Product must be purchased from an Authorized Canadian Dealer. Products purchased in the U.S.A. and used in Canada are not covered by these warranties.
  • Page 51 Memo...

  • Page 52: Location Of Main Parts

    2. LOCATION OF MAIN PARTS AND MECHANISM PARTS 2-1. Location of Main Parts EU05 Output PC board Feed motor PC board EU02 Power supply PC board EU04 Power SW PC board EU01 Main PC board Disc motor PC board EU03 Front display PC board Loading motor PC board Fig.

  • Page 53: Location Of Mechanism Parts

    2-2. Location of Mechanism Parts Mechanism chassis assembly Mechanism shield cover Fig. 1-2-2 Mechanism chassis assembly (Top side) Mechanism chassis assembly Tray First tray Fig. 1-2-3 Mechanism chassis assembly (Bottom side)
  • Page 54 Second tray Loading belt Gear Gear Gear Fig. 1-2-4 Mechanism chassis assembly (Internal side) Loading motor PC board Pickup mechanism assembly Fig. 1-2-5 Mechanism chassis assembly (Bottom side)
  • Page 55 Damper Damper Rack gear assembly Pickup assembly Gear A Gear B Sub chassis assembly Damper Damper Fig. 1-2-6 Pickup mechanism chassis assembly (Top side) Feed motor Feed motor PC board Fig. 1-2-7 Pickup mechanism chassis assembly (Bottom side)

  • Page 56: Troubleshooting

    3. TROUBLESHOOTING 3-1. Main Circuit 3-1-1. Servo System (1) Initial Operation after Power ON Power ON Send each LSI hard RST command and initial command. Pickup head is positioned at transmission initial position. Is tray closed? Pin 5 of CN502, TCLS=L Tray close operation Pin 6 of IC604: LDMP = H/L...
  • Page 57 The pickup transmission initial operation is carried out to determine the initial position by transmitting the pickup to the innermost position once (start-limit switch (pin 4 of CN503) Pickup (P.U.) transmission initial develops "L".) and to the external direction at low speed operation does not occur.
  • Page 58 Disc kind misjudgement Check laser current. (Initial setting is NG.) Are FE and RFSB 50 mA 90 mA Check laser current. signals for each disc normal? 50 mA 90 mA lop = Voltage between (E534 and E536)/10 Check pins 14, 15 Check wiring for Check peripheral and 16 of IC502...
  • Page 59 (2) Picture appears (PLAY) PLAY Disc motor (D.M.) forced accelleration (500 ms) Focus search Repeat three times. Is forcus servo CLV servo ON. Tracking balance adjustment Tracking servo ON. Focus gain adjustment Automatic adjustment is carried out when a disc is replaced after power ON.
  • Page 60 Disc motor (D.M.) does not rotate. Does pin 117 of IC401 (TP409) PLCK oscillate around 10 MHz ? Check peripheral Check peripheral circuits circuit of IC402. of IC402. Check disc motor and wiring. Fig. 1-3-10 Focus servo is NG. Focus servo ON signal waveform Are FE, RFSB, FE signal...
  • Page 61 Tracking servo is NG. Is TE signal normal? Check peripheral Check IC502. circuit of IC604. Fig. 1-3-13 Signal waveform at Signal waveform at tracking servo ON (CD) tracking servo ON (DVD) TE signal Pin 151 (TP406) of IC401 1.65V RFRP signal Pin 153 (TP408) of IC401 Search ON (SRCH) Pin 38 (TP411) of IC401...
  • Page 62 Does pulse of Disc playback is NG (DVD). L = 1.65V and H = 3.3V develop at pin 131 and L = 0V and H = 1.65V develop at pin 132 of IC401? Is PLL locked? Check peripheral circuits (Refer to waveforms.) of IC401 and IC604.

  • Page 63: Location Diagram Of Servo Test Point

    3-1-2. Location Diagram of Servo Test Point IC503 CN501 CN503 CN701 IC503 IC401 CN901 IC502 IC903 IC906 CN502 IC604 IC301 CN301 CN603 CN601 IC401 IC502 Fig. 1-3-21...

  • Page 64: Replacement Of Mechanical Parts

    SECTION 2 PART REPLACEMENT AND ADJUSTMENT PROCEDURES CAUTIONS BEFORE STARTING SERVICING Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to take a proper grounding treatment as required. Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a magnetized screw- driver in servicing.
  • Page 65 1-1-3. Front Panel Gear (4) 1. Remove the flexible cable (1). Tray (5) 2. Release four claws (2) and remove the front panel (3). Claw (2) Mechanism assembly (3) Mechanism assembly (3) Front panel (3) Flexible cable (1) Claws (2) Claw (2) Fig.

  • Page 66: Pc Board Replacement

    1-2-2. Output PC Board 1-2. PC Board Replacement 1. Peel off the tape (3). 1-2-1. Main PC Board 2. Remove the connector (2). Note: 3. Remove two flexible cables (1). • Before removing the main PC board (4), be sure to 4.
  • Page 67 1-2-3. Power Supply PC Board 1-2-4. Front Display and Power SW PC Boards 1. Peel off the tape (1). 1. Remove the front panel. (Refer to item 1-1-3.) 2. Remove the connector (2). 2. Remove six screws (1) and remove the front display PC board (2).

  • Page 68: Mechanism Parts Replacement

    1-3-2. Loading Belt 1-3. Mechanism Parts Replacement 1. Eject the tray (1). (Refer to item 1-1-2.) 1-3-1. Mechanism Chassis Assembly Pull out the tray (1) to this side until it stops. Note: 2. Remove one screw (2) and remove the gear (3). •...
  • Page 69 1-3-3. Loading Motor <Removal> POM mark position 1. Remove the loading belt. (Refer to item 1-3-2.) 2. Remove two screws (1). 3. Remove four screws (2) and remove the loading motor (3) (with the loading motor PC board (4) attached). 4.
  • Page 70 1-3-4. Pickup Mechanism Assembly 1-3-5. Gear B Assembly, Gear A and Rack Gear Assembly <Removal> 1. Turn over the mechanism chassis assembly (1). <Removal> 2. Remove the flexible cables (2) at two locations. 1. Remove one screw (1) and remove the gear B assembly (2).

  • Page 71: Feed Motor

    Rack gear assembly (4) 1-3-6. Feed Motor Gear A (2) <Removal> 1. Remove the gear B assembly (1) and the gear A (2). Positioning holes (Refer to item 1-3-5.) 2. Remove two screws (1) and remove the feed motor (2) (with the feed motor PC board (3) attached).

  • Page 72: Tray Replacement

    1-4. Tray Replacement <The First Tray 1 Removal> 1. Slide the tray marked 1 in the arrow direction, then Note: remove it from two bosses. • Perform this service only when a defective with a disc not ejected, etc. occurs. First tray 1 Label of first tray 1...
  • Page 73 1-4-2. Tray Mounting <Tray mounting> 1. Remove the gear (1). <The First Tray 1 Mounting> 2. Insert the tray (2) horizontally. 1. Mount the first tray 1 by fitting to the bosses at two locations after sliding the upper wing to the inner side. 3.

  • Page 74: Servicing Diagrams

    SECTION 3 SERVICING DIAGRAMS 1. STANDING PC BOARDS FOR SERVICING EU05 Output PC board EU02 Power supply PC board EU04 Power SW PC board EU03 Front display PC board EU01 Main PC board Fig. 3-1-1...

  • Page 75: Precautions For Part Replacement

    2. CIRCUIT SYMBOLS AND SUPPLEMENTARY EXPLANATION 2-1. Precautions for Part Replacement • In the schematic diagram, parts marked (ex. • Using the parts other than those specified shall violate the regulations, and may cause troubles such as F801) are critical part to meet the safety regulations, operation failures, fire etc.

  • Page 76: Inductor Indication

    2-4. Inductor Indication Eg. 4 ... Η Unit None µ ... µH ... mH Tolerance None ... ±5% ... ±0.1% ... ±0.25% ... ±0.5% ... ±1% Type name ... ±2% ... ±10% ... ±20% Fig. 3-2-4 2-5. Waveform and Voltage Measurement Eg.

  • Page 77: When Replaced Rom Ics Or Upgraded Firmware

    IC606 may be requested for servicing. DATA UPDATE KIT (RS232C Interface/cable) RS-232C cable Computer (MS-DOS/PC-DOS) CN601 Fig. 3-2-6 Note: • The firmware and setup data floppy discs are not available as service parts. For more information, consult TOSHIBA service office in your area.
  • Page 78 3. PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM EU05 OUTPUT CNY02 Board-in CNY01 CNX01 FFC 1mm 7P FFC 1mm 14P Press-fit W901 W301 CN901 CN301 Mechanism W501 FFC 1mm 18P CN802 VREF CN602 CN501 EU02 CN601 POWER FFC 1.25mm 6P W502 LDMP TOPN CN502...

  • Page 79: Block Diagrams

    4. BLOCK DIAGRAMS 4-1. Overall Block Diagram Data/Control Bus DVD AV Data SP DIF Data MAIN PROCESSOR UNIT AUDIO/VIDEO OUTPUT UNIT IC402 HY512264JC-50 2M-DRAM Coaxial Digital Buffer Audio Out IC201 ICY02 IC903 MSM514800C-70JS TC74HCU04 PLL1700 Tray Motor 4M-DRAM Master Clock PLL-VCO Feed Motor...
  • Page 80 4-2. Power Supply Block Diagram Fig. 3-4-2...
  • Page 81 4-3. Front Display, Power Switch Block Diagram 4-3-1. Front Display Fig. 3-4-3 4-3-2. Front Display Pattern Fig. 3-4-4...
  • Page 82 4-3-3. Front Display, Power Switch Block Diagram Fig. 3-4-5...
  • Page 83 4-4. Main Block Diagrams 4-4-1. Servo System Block Diagram &1 Õ Õ ,& ,& ,& 6HUYR 6HUYR 'DWD SU 'DWD SUR R F F H H V V VR VRU U 0 '5$0     7& 7&   ) )     3/&.
  • Page 84 4-4-2. Logical System Block Diagram Fig. 3-4-7...
  • Page 85 4-5. Output Block Diagram Fig. 3-4-8...
  • Page 86 5. CIRCUIT DIAGRAMS 5-1. Power Supply Circuit Diagram Fig. 3-5-1...

  • Page 87: Power Supply Circuit Diagram

    Power Supply Circuit Diagram Q801 AC120V 60Hz input ON MODE V:50 V/div s/div Fig. 3-5-2 Part Loca- Part Loca- Part Loca- tion tion tion C801 D821 R811 C802 D822 R821 C803 D823 R822 C804 D824 R823 C805 D825 R824 C806 D826 R825 C807...
  • Page 88 5-2. Front Display, Power Switch Circuit Diagram Fig. 3-5-3...

  • Page 89: Front Display, Power Switch Circuit Diagram

    Front Display, Power Switch Circuit Diagram Part Loca- Part Loca- tion tion IC101, Pin IC101, Pin EG02 A101 EG03 C101 EG04 C102 EG05 C103 EG06 C104 EG07 CN101 EG08 CN102 CN103 EG09 D101 EG10 D102 EG11 D104 EG12 X-OUT D105 EG13 EP01 D141...
  • Page 90 5-3. Main Circuit Diagrams 5-3-1. New Main ICs Information TC9489F &' && "# "" TA1313F " " & PCM1716-E & " PLL1700E...
  • Page 91 Main ICs Function Table 3-5-1 Ref. No. IC Name Function Detail IC601 S24C04BFJ-TB EE-PROM Setup default, memorization of specification setting. IC303 ADV7170 Video Encorder Built-in D/A converter. Encodes digital video signal to analog video signal of NTSC/PAL system. IC301 MD36710X AV Decorder Decryption, MPEG-2 Decode, Audio Decode, Sub Picture Decode, OSD.
  • Page 92 Table 3-5-4 TA1313F (1/2) Table 3-5-4 TA1313F (2/2) Name Function Name Function GNDP GND terminal –– –– LDO2 Drive output 2 Power supply terminal Monitor input 2 –– –– –– –– GND2 GND terminal Analog VREF RFDC DC feedback capacity Vrfi Filter capacity for the reference Boost adjustment...
  • Page 93 Table 3-5-5 TC9489F (1/4) Table 3-5-5 TC9489F (2/4) Name Function Name Function ASLCN Data slice negative output Microcomputer data bus ASLCO Analog data slice output Microcomputer data bus DVSS DAC-only ground Microcomputer data bus R-channel output signal VDD5 5V power supply DVDD DAC-only power supply ––...
  • Page 94 Table 3-5-5 TC9489F (3/4) Table 3-5-5 TC9489F (4/4) Name Function Name Function External RAM data input/output AWIN Active-wide PLL control signal input External RAM data input/output AVSS 3.3V analog block-only ground External RAM data input/output Focus error signal input External RAM data input/output Tracking error signal input VSS3 3.3V digital ground...
  • Page 95 5-3-2. Main Circuit Diagram Fig. 3-5-5...
  • Page 96 5-3-2. Main Circuit Diagram...
  • Page 103 Fig. 3-5-5...
  • Page 104 Main Circuit Diagram Part Loca- Part Loca- Part Loca- Part Loca- Part Loca- Part Loca- Part Loca- Part Loca- tion tion tion tion tion tion tion tion IC504 R439 R625 C201 C452 CN601 D1 E504 E636 C202 C453 CN602 D1 E505 E637 IC601...
  • Page 105 5-4. Output Circuit Diagram Fig. 3-5-6...

  • Page 106: Output Circuit Diagram

    Output Circuit Diagram E-11 CNX01 JX01 Composite video output (a) Pin (C (b) Pin (C 100% color bar (Play) CVBS output terminated 100% color bar V: 0.5 V/div V: 500 mV/div H: 20 s/div H: 20 s/div JX01 JX01 L ch output D-10 / R ch output E-10...
  • Page 107 Output Circuit Diagram ICY02 ICY01 Part Loca- Part Loca- Part Loca- Part Loca- BUFFER LPF & AMP tion tion tion tion CY11 RX08 CNX01 EY08 CY12 RX09 CNY01 EY09 CNY02 CY13 EY10 RX10 -10.0 CX01 CY14 EY11 RX11 CX02 CY15 EY12 RX12 CY16...
  • Page 108 5-5. Motor System Circuit Diagram Part Loca- tion Fig. 3-5-8...

  • Page 109: Pc Boards

    6. PC BOARDS 6-1. Power Supply PC Board Fig. 3-6-1 EU02 Power Supply PC Board (Bottom side) Part Loca- Part Loca- Part Loca- Part Loca- tion tion tion tion C801 D803 Q821 R837 C802 D804 Q822 R838 C803 D805 Q823 R839 C804 D806...
  • Page 110 6-2. Power Switch PC Board E141 E142 D141 E143 E144 Q141 S141 Fig. 3-6-2 EU04 Fig. 3-6-3 EU04 Power Switch PC Board Power Switch PC Board (Top side) (Bottom side)
  • Page 111 6-3. Main PC Board C501 CN503 CN501 R502R503 C503 C702 C506 C508 CN701 R505 IC504 Q501 R405 C535 R501 R504 R506 C424 IC501 D501 C504 R512 C510 R510 R507 R539 R410 IC902 C901 C505 R427 C507 R429 C704 C705 C707 C910 R431 R913...
  • Page 112 Main PC Board (Top side) Part Loca- Part Loca- Part Loca- tion tion tion C203 CN502 R461 C204 CN503 R501 C205 CN601 R502 C302 CN603 R503 C310 CN701 R504 C314 CN901 R505 C316 D501 R506 C318 D901 R507 C320 D902 R510 C324 FL901...
  • Page 113 C711 FL701 C502 C706 FL401 C536 R401 C710 C709 C708 C426 C405 C412 R417 C407 C414 R701 C416 C417 R412 C453 C452 R454 R420 R422 R425 C421 C427 R426 R418 R509 R453 C520 R546 C411 C401 R542 R424 C428 R428 C422 R406 C514 C515...
  • Page 114 Main PC Board (Bottom side) Part Loca- Part Loca- Part Loca- Part Loca- tion tion tion tion C201 C524 R402 R612 C202 C525 R403 R613 C206 C526 R404 R614 C207 C527 R406 R615 C301 C528 R407 R616 C303 C529 R408 R617 C304 C530...
  • Page 115 Fig. 3-6-6 EU01 Main PC Board (Top pattern, character/symbol)
  • Page 116 Fig. 3-6-7 EU01 Main PC Board (Bottom pattern, character/symbol)

  • Page 117: Output Pc Board

    6-4. Output PC Board Part Loca- Part Loca- tion tion CY08 CNX01 CNY01 CY09 CNY02 CY10 CX01 CY11 CY15 CX03 CX04 CY19 CX05 CY20 CX06 CY21 CX08 CY22 ICY03 CX10 ICY03 CX11 JW01 CX12 JW02 JX01 JW10 CX13 JW03 JW04 CX14 CY10 CX16...
  • Page 118 6-5. Front Display PC Board Part Loca- tion A101 S102 C101 C104 CN101 CN102 SP101 D104 S107 S101 D105 MT101 S101 S102 S103 S104 S104 D105 S105 A101 S106 MT101 S107 D104 S108 SP101 X101 S108 S105 S106 S103 CN101 Fig.

  • Page 119: Parts List

    SECTION 4 PARTS LIST SAFETY PRECAUTION The parts identified by ! ( ) mark are critical for safety. Replace only with part number specified. The mounting position of replacement is to be identical with originals. The substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire or other hazards.

  • Page 120: Exploded Views

    4. EXPLODED VIEWS 4-1. Packing Assembly ZF23 ZF10 ZF27 ZF11 ZF01 ZF17 ZF30 ZK04 ZK03 ZK01 ZK02 Fig. 4-4-1...

  • Page 121: Chassis Assembly

    4-2. Chassis Assembly ZG60 BID 3.0x6.0 ZG60 BID 3.0x6.0 ZG20 ZG74 ZG60 BID 3.0x6.0 2.6x5 ZG63 W901 2.6x5 ZG64 W501 EU02 ZG67 W301 W503 W502 ZG60 EU01 ZG71 ZG60 ZG71 EU04 W102 EU03 ZG26 ZG26 ZG70 ZG70 ZG03 ZG01 W603 Fig.

  • Page 122: Mechanism Assembly

    4-3. Mechanism Assembly MG63 3.0x8 MC12 MC14 MC10 MC02 MC63 BID 2.6x3.5 MC01 MP60 MP67 PAN 1.7x4 MP92 MP65 PAN 1.7x3 MP16 RM01 MP36 MP36 MP91 MP37 MP37 W6.6P0.5D12 FM01 W6.6P0.5D12 MP61 MP61 TZ PAN 2.6x8 TZ PAN 2.6x8 MP01 Fig.
  • Page 123 5.PARTS LIST LOCATION PART NUMBER NUMBER DESCRIPTION - MECHANICAL PARTS - FM01 79070421 Motor Assy,Feed MC01 79070426 Chassis Assy Mechanism MC14 79070429 Belt,Loading MP01 79070415 Mechanism Assy,pickup MP16 79070422 Gear MP36 79070424 Dumper,Rubber Front MP37 79070425 Dumper,Rubber Rear MP60 79070020 Screw 1.7x4.0mm MP61...
  • Page 124 LOCATION PART LOCATION PART NUMBER NUMBER DESCRIPTION NUMBER NUMBER DESCRIPTION ! C802 79020190 Cap,Ceramic 100pF M 250V - ELECTRICAL PARTS - ! C803 79020190 Cap,Ceramic 100pF M 250V ! C804 79020189 Cap,Ceramic 1000pF M 250V ! C805 79020106 Cap,Electrolytic 100MF M 200V ! EU01 79083055...

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