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Toshiba 34HDX82 Service Manual

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FILE NO. 020-200220

SERVICE MANUAL

COLOR TELEVISION
N2WS Chassis
34HDX82, 34HD82
(TAC0240)
(TAC0241)
PUBLISHED IN JAPAN. Aug. 2002 So

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Summary of Contents for Toshiba 34HDX82

  • Page 1: Service Manual

    FILE NO. 020-200220 SERVICE MANUAL COLOR TELEVISION N2WS Chassis 34HDX82, 34HD82 (TAC0240) (TAC0241) PUBLISHED IN JAPAN. Aug. 2002 So...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 SET-UP ADJUSTMENT ............................4 SERVICE MODE ..............................8 ELECTRICAL ADJUSTMENTS ..........................11 CIRCUIT CHECKS ..............................13 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................14 LOCATION OF CONTROLS ........................... 15 PROGRAMMING CHANNEL MEMORY .........................

  • Page 3: Chapter 1 General Adjustments

    CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU- TION” AND “PRODUCT SAFETY NOTICE” INSTRUCTIONS BELOW. X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazard- 2. This receiver is equipped with a Fail Safe (FS) circuit which ous X-RAY RADIATION.

  • Page 4: Set-Up Adjustment

    WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU- TION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL. SET-UP ADJUSTMENT The following adjustments should be made when a complete realignment is required or a new picture tube is installed. Perform the adjustments in order as follows : 1.
  • Page 5 CONVERGENCE ADJUSTMENTS 4-POLE NOTE: Before attempting any convergence adjustments, MAGNETS the receiver should be operated for at least fifteen 6-POLE minutes. MAGNETS CENTER CONVERGENCE ADJUSTMENT 1. Display built-in cross-dot pattern using the TEST SIG- NAL SELECTION function. 2. Adjust the BRIGHTNESS and CONTRAST Controls for well defined pattern.
  • Page 6 WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU- TION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF SERVICE MANUAL. (SET-UP ADJUSTMENT FOR FLAT TUBE) The following adjustments should be made when a complete realignment is required or a new picture tube is installed. Perform the adjustments in order as follows : 1.
  • Page 7 (5)Adjust the sub-4-pole magnets only in case there is any deviation of Xv bow-shaped convergence. (To be usually set at the initial position) Align both sides with the sub-4-pole magnets and minimize the deviation of blue and red with the main 4-pole magnets. Xv bow-shaped deviation of convergence red/blue blue...

  • Page 8: Service Mode

    SERVICE MODE 1. ENTERING TO SERVICE MODE 1) Press MUTE button twice 2) Press MUTE button 3) While pressing the MUTE button, on Remote Control. again to keep pressing. press MENU button on TV set. 1/2 MUTE MUTE (Service mode display) 2.
  • Page 9 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2. (t button for reverse order) Refer to table-2 for preset data of adjustment mode. (See SETTING & ADJUSTING DATA on page 14) 5.
  • Page 10 8. SELF DIAGNOSTIC FUNCTION 1) Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s are executed properly. 2) During diagnosis, the following displays are shown. SELF CHECK NO.

  • Page 11: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS ITEM ADJUSTMENT PROCEDURE FOCUS VR ADJ 1. Enter the service mode, then select any register item. 2. Press the TV/VIDEO button on the Remote until the black cross-bar pattern ap- pears on the screen. 3. Adjust the FOCUS control (on T461) for well defined scanning lines on the picture screen.
  • Page 12 ITEM ADJUSTMENT PROCEDURE E-W PARABOLA (DPC) 1. Call up the adjustment mode display, then select the item PARA. (PARA) 2. Press the TV/VIDEO button on Remote until the cross-hatch pattern appears on the screen. 3. Press the VOLUME s or t button to make vertical lines straight as shown below. HORIZONTAL POSITION 1.

  • Page 13: Circuit Checks

    CIRCUIT CHECKS HIGH VOLTAGE CHECK Troubleshooting Guide for Fail Safe Circuit CAUTION: There is no HIGH VOLTAGE ADJUSTMENT on this chassis. Checking should be done following the steps below. Check that the set returns to normal operation when pin 12 1.

  • Page 14: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 34" HIGH VOLTAGE AT ZERO BEAM: 32.2 kV MAX HIGH VOLTAGE: 33.6 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: NORMAL NORMAL Preset Item Name of adjustment Preset Item Name of adjustment...

  • Page 15: Location Of Controls

    LOCATION OF CONTROLS (Representative: 34HDX82) TV Front MENU Video/Audio inputs TV/VIDEO (Video 3) VOLUME ts CHANNEL ts VIDEO-3 IN MENU TV/VIDEO VOLUME CHANNEL POWER S-VIDEO VIDEO AUDIO L/MONO INSIDE DOOR Remote sensor TV Rear ANT(75 ) ANT1 ANT2 DVI IN...

  • Page 16: Remote Control

    Remote Control Power turns the TV on or off SLEEP sets the TV to turn at a specific time LIGHT The initial press of the LIGHT button causes two actions: Channel Numbers (0–9, 100) allow direct access to channels MODE cycles through the 6 device modes FAVOURITE allows access to Multi-Window function INFO allows access to Multi-Window function...

  • Page 17: Programming Channel Memory

    PROGRAMMING CHANNEL MEMORY The channel memory is the list of TV channel numbers your TV will stop on when you press the CHANNEL s or t button. First, use the TV/CABLE and CH PROGRAM functions to preset all active channels in your area automatically. If necessary, arrange the preset channels with the ADD/ERASE functions so that you can tune into only desired channels.

  • Page 18: Chassis And Cabinet Replacement Parts List

    The part number must be used when ordering parts, in order to assist in processing, be sure to include the Model number and Description. • The PC board assembly with mark is no longer available after the end of the production. Model : 34HDX82, 34HD82 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 19 Location Location Parts No. Description Parts No. Description C269 24105101 CERAMIC CHIP, 50V CH 100PF J C530 24797010 ELECTROLYTIC, 50V 1UF M C272 24100104 CERAMIC CHIP, 25V F 0.1UF Z C531 24100104 CERAMIC CHIP, 25V F 0.1UF Z C273 24100104 CERAMIC CHIP, 25V F 0.1UF Z C532 24100104...
  • Page 20 CERAMIC DISC, 2KV 4700PF K (34HD82) * C812 24092583 CERAMIC DISC, AC250V E 2200PF M C903 24436221 CERAMIC DISC, 50V SL 220PF J (34HDX82) * C815 24092579 CERAMIC DISC, AC250V 470PF K C903 24436471 CERAMIC DISC, 50V SL 470PF J (34HD82)
  • Page 21 CD26 24590103 PLASTIC FILM, 50V 0.01UF J CA39 24105101 CERAMIC CHIP, 50V CH 100PF J CD41 24503041 PLASTIC FILM , 63V 0.1UF J (34HDX82) CA42 24109392 CERAMIC CHIP, 50V B 3900PF K CD41 24797479 ELECTROLYTIC, 50V 4.7UF M (34HD82) CA45...
  • Page 22 Location Location Parts No. Description Parts No. Description CS04 24797010 ELECTROLYTIC, 50V 1UF M CV30 24100103 CERAMIC CHIP, 50V F 0.01UF Z CS07 24105221 CERAMIC CHIP, 50V CH 220PF J CV75 24100103 CERAMIC CHIP, 50V F 0.01UF Z CS08 24797010 ELECTROLYTIC, 50V 1UF M CV79 24203470...
  • Page 23 Location Location Parts No. Description Parts No. Description R223 24011302 CHIP, METAL FILM, 1/20W 3K OHM J R371 24011103 CHIP, METAL FILM, 1/20W 10K OHM J R224 24872750 CHIP, METAL FILM, 1/16W 75 OHM J R376 24366220 CARBON FILM, 1/6W 22 OHM J R225 24872750 CHIP, METAL FILM, 1/16W 75 OHM J...
  • Page 24 CARBON FILM, 1/6W 15 OHM J R715 24366273 CARBON FILM, 1/6W 27K OHM J R907 24366560 CARBON FILM, 1/6W 56 OHM J (34HDX82) R716 24366273 CARBON FILM, 1/6W 27K OHM J R913 24366560 CARBON FILM, 1/6W 56 OHM J (34HDX82)
  • Page 25 Location Location Parts No. Description Parts No. Description R929 24366100 CARBON FILM, 1/6W 10 OHM J (34HDX82) R2155 24011100 CHIP, METAL FILM, 1/20W 10 OHM J R929 24366470 CARBON FILM, 1/6W 47 OHM J (34HD82) R2156 24011100 CHIP, METAL FILM, 1/20W 10 OHM J...
  • Page 26 CHIP, METAL FILM, 1/20W 1K OHM J RA197 24011472 CHIP, METAL FILM, 1/20W 4.7K OHM J RD01 24366101 CARBON FILM, 1/6W 100 OHM J (34HDX82) RA198 24011472 CHIP, METAL FILM, 1/20W 4.7K OHM J RD01 24366102 CARBON FILM, 1/6W 1K OHM J (34HD82) RA199 24011472 CHIP, METAL FILM, 1/20W 4.7K OHM J...
  • Page 27 CARBON FILM, 1/6W 100 OHM J RR90 24011103 CHIP, METAL FILM, 1/20W 10K OHM J RD18 24366105 CARBON FILM, 1/6W 1M OHM J (34HDX82) RR91 24011393 CHIP, METAL FILM, 1/20W 39K OHM J RD18 24366223 CARBON FILM, 1/6W 22K OHM J (34HD82)
  • Page 28 Location Location Parts No. Description Parts No. Description RS125 24011182 CHIP, METAL FILM, 1/20W 1.8K OHM J RV121 24011100 CHIP, METAL FILM, 1/20W 10 OHM J RS651 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RV131 24011100 CHIP, METAL FILM, 1/20W 10 OHM J RS652 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RV178 24011152...
  • Page 29 Location Location Parts No. Description Parts No. Description L217 23246191 COIL, CHIP-INDUCTOR-R47MMHJ L902 23289689 COIL, PEAKING, TRF46R8AF (34HDX82) COLTRF4R47CG L902 23237975 COIL, PEAKING, TRF4101AC (34HD82) L218 23246191 COIL, CHIP-INDUCTOR-R47MMHJ L903 23289689 COIL, PEAKING, TRF46R8AF (34HDX82) COLTRF4R47CG L903 23237975 COIL, PEAKING, TRF4101AC (34HD82)
  • Page 30 IC, ERROR AMP. VS=130.2V TO220A, Q490 23205077 TRANSISTOR, FET, 2SK2679 SE130N, LF4 Q490B 70391355 SCREW, BIND HEAD TAP-TITE B, Q901 23205159 TRANSISTOR, 2SC3790E (34HDX82) BITTB 3X8 SZN Q901 23314780 TRANSISTOR, 2SC4544 (34HD82) Q491 23118952 IC, PHOTO COUPLER, TLP521-1 (FA) Q902...
  • Page 31 23314204 TRANSISTOR, 2SC2412K,Q D372 23118859 DIODE, 1SS133 QD01 23009142 IC, NJM1136D (34HD82) D373 23118859 DIODE, 1SS133 QD41 23000725 IC, NJM2700L (34HDX82) D374 23316690 DIODE, ZENER, MTZJ10B QD41 23000189 IC, TA2136N D404 23224366 DIODE, FMQ-3GU QD42 23314085 TRANSISTOR, 2SK372-V (34HDX82) D404B 70391355...
  • Page 32 Location Location Parts No. Description Parts No. Description D503 23118041 DIODE, MA111 D918 23357012 DIODE, 1SS244 (34HDX82) D505 23316622 DIODE, ZENER, MA8270-M D919 23357012 DIODE, 1SS244 (34HDX82) D520 23316647 DIODE, ZENER, MTZJ2.0B D921 23115337 DIODE, 1S1834 D601 23118041 DIODE, MA111...
  • Page 33 GJ225 24000445 CHIP JUMPER, 1608TYPE U801 23787697 POWER/DEF BOARD, PD0739A GJ226 24000445 CHIP JUMPER, 1608TYPE U901 23787699 CRT/D VM BOARD, PD0741A (34HDX82) GJ227 24000445 CHIP JUMPER, 1608TYPE U901 23787866 CRT/D VM BOARD, PD0741B (34HD82) GJ228 24000445 CHIP JUMPER, 1608TYPE U902...
  • Page 34 23321445 TUNER, TIF US IIC PH 181CH MONO, EL973L ACCESSORIES * K912 23306413 REMOCON HAND UNIT IR, PJTVUSA, CT-90086 (34HD82) * K912 23306458 REMOCON HAND UNIT, CT-90121 (34HDX82) Y101 23565732 OWNER’S MANUAL, ENGLISH/FRENCH, 34HDX82 Y101 23565733 OWNER’S MANUAL, ENGLISH/FRENCH, 34HD82...

  • Page 35: Pc Boards Bottom View

    SIGNAL BOARD PD0678 BOTTOM (FOIL) SIDE – 35 – – 36 –...
  • Page 36 POWER/DEF BOARD PD0739A BOTTOM (FOIL) SIDE – 37 – – 38 –...
  • Page 37 CONT BOARD PD0679-1 LED BOARD PD0679-2 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE AC INPUT BOARD PD0679-3 BOTTOM (FOIL) SIDE – 39 – – 40 –...
  • Page 38 SRS-3D BOARD PD0645C(34HDX82) CRT-D SVM BOARD PD0741 SRS-3D BOARD PD0644C(34HD82) BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE VERT BOARD PD0740A BOTTOM (FOIL) SIDE – 41 – – 42 –...
  • Page 39 TERMINAL VIEW OF TRANSISTORS 2SD2253 2SC3852 2SC752GTM 2SC752 2SA1788 (old) 2SD1763A 2SA562TM 2SC2482 2SC5243 2SC1569 2SA1015 2SC2655 2SC4544 2SC4721P 2SC1815 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 2SD1554 ON4409 RN2203 RN2201 2SD2253 RN2004 2SD1556 RN1203 2SC5143 RN1204 2SC5570 RN2204 2SD2553 RN1205 RN1202 RN1201...
  • Page 40 THIS PAGE IS INTENTIONALLY LEFT BLANK. – 44 –...

  • Page 41: Schematic Diagram

    SCHEMATIC DIAGRAM MODEL : 34HDX82 / 34HD82 WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" ON THE MANUAL FOR THIS MODEL. CAUTION: The international hazard symbols "*" in the schematic diagram and the parts list designate components which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or specified in the parts list.
  • Page 42 – 46 –...

  • Page 43: Terminal View Of Transistors

    SPECIFICATIONS (Representative: 34HDX82) TELEVISION SYSTEM NTSC standard CHANNEL COVERAGE VHF: 2 through 13 UHF: 14 through 69 Cable TV: mid band (A-8 through A-1, A through I) super band (J through W) hyper band (AA through ZZ, AAA, BBB) ultra band (65 through 94, 100 through 125)
  • Page 44 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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