Toshiba 36HFX72 Service Manual
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Toshiba 36HFX72 Service Manual

Toshiba 36HFX72 Service Manual

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FILE NO. 020-200206
SERVICE MANUAL
COLOR TELEVISION
N2PS Chassis
36HFX72 , 36HF72
(TAC0230)
(TAC0231)
PUBLISHED IN JAPAN. Jun. 2002 So

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  • Page 1 FILE NO. 020-200206 SERVICE MANUAL COLOR TELEVISION N2PS Chassis 36HFX72 , 36HF72 (TAC0230) (TAC0231) PUBLISHED IN JAPAN. Jun. 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 36" HIGH VOLTAGE AT ZERO BEAM: 32.7 kV MAX HIGH VOLTAGE: 34.1 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Name of adjustment Preset Data Item Name of adjustment Preset...

  • Page 15: Location Of Controls

    LOCATION OF CONTROLS (Representatives: 36HFX72) TV Front MENU Video/Audio inputs VOLUME T S (Video 3) CHANNEL ts DEMO MENU TV/VIDEO VOLUME CHANNEL VIDEO-3 IN S-VIDEO VIDEO L/MONO-AUDIO-R POWER MENU TV/VIDEO T Sts Remote sensor DEMO Power indicator TV Rear ANT(75...
  • Page 16 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 PIC SIZE cycles through the three picure formats...

  • 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 : 36HFX72/36HF72 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 19 CERAMIC DISC, 500V B 470PF K C684 24668102 ELECTROLYTIC, 35V 1000UF M 3A (36HFX72) C477 24666220 ELECTROLYTIC, 16V 22UF M 3A C686 24503041 PLASTIC FILM , 63V 0.1UF J (36HFX72) C480 24794100 ELECTROLYTIC, 16V 10UF M C704 24591822 PLASTIC FILM, 50V 8200PF J C481 24214121...
  • Page 20 Location Location Parts No. Description Parts No. Description C884 24086049 ELECTROLYTIC, 160V 330UF M 3D CA06 24109392 CERAMIC CHIP, 50V B 3900PF K C885 24214471 CERAMIC DISC, 500V B 470PF K CA07 24109392 CERAMIC CHIP, 50V B 3900PF K C886 24214471 CERAMIC DISC, 500V B 470PF K CA23...
  • Page 21 24567333 PLASTIC FILM, 50V 33000PF J (36HF72) CS13 24797010 ELECTROLYTIC, 50V 1UF M CD20 24503038 MT PLA CAP 63V 0.056UF J (36HFX72) CS14 24105221 CERAMIC CHIP, 50V CH 220PF J CD20 24503039 MT PLA CAP 63V 0.068UF J (36HF72) CS15...
  • Page 22 Location Location Parts No. Description Parts No. Description CV266 24794470 ELECTORLYTIC, 16V 47UF M R379 24382103 OXIDE METAL FILM, 1W 10K OHM J CV269 24794470 ELECTORLYTIC, 16V 47UF M R380 24946226 CARBON CONPOSITI0N, 1/2W 22M OHM K CV272 24794470 ELECTORLYTIC, 16V 47UF M R381 24366822 CARBON FILM, 1/6W 8.2K OHM J...
  • Page 23 CARBON COMPOSITION, 1/2W 560 OHM K (36HFX72) R903 24946561 CARBON COMPOSITION, 1/2W 560 OHM K R686 24366229 CARBON FILM, 1/6W 2.2 OHM J (36HFX72) R904 24366472 CARBON FILM, 1/6W 4.7K OHM J R687 24011103 CHIP, METAL FILM, 1/20W 10K OHM J...
  • Page 24 Location Location Parts No. Description Parts No. Description R926 24366102 CARBON FILM, 1/6W 1K OHM J R2107 24011101 CHIP, METAL FILM, 1/20W 100 OHM J R928 24366151 CARBON FILM, 1/6W 150 OHM J R2108 24011103 CHIP, METAL FILM, 1/20W 10K OHM J R929 24366470 CARBON FILM, 1/6W 47 OHM J...
  • Page 25 CHIP, METAL FILM, 1/20W 3.3K OHM J RA031 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RD01 24366101 CARBON FILM, 1/6W 100 OHM J (36HFX72) RA116 24011103 CHIP, METAL FILM, 1/20W 10K OHM J RD01 24366102 CARBON FILM, 1/6W 1K OHM J (36HF72)
  • Page 26 Location Location Parts No. Description Parts No. Description RD02 24366105 CARBON FILM, 1/6W 1M OHM J (36HFX72) RD86 24366223 CARBON FILM, 1/6W 22K OHM J (36HFX72) RD02 24366223 CARBON FILM, 1/6W 22K OHM J (36HF72) RD87 24366223 CARBON FILM, 1/6W 22K OHM J (36HFX72)
  • Page 27 CHIP, METAL FILM, 1/20W 2.2K OHM J RS125 24011182 CHIP, METAL FILM, 1/20W 1.8K OHM J RV182 24011222 CHIP, METAL FILM, 1/20W 2.2K OHM J (36HFX72) RV183 24011222 CHIP, METAL FILM, 1/20W 2.2K OHM J RS125 24011562 CHIP, METAL FILM, 1/20W 5.6K OHM J RV184 24011182 CHIP, METAL FILM, 1/20W 1.8K OHM J...
  • Page 28 TRANSISTOR, KTA1504Y LV71 23289840 COIL, PEAKING, TRF4100AT Q552 23205054 TRANSISTOR, KTA1504Y LV248 23103845 COIL, COMMONMODE, TEM2030AY Q610 23906523 IC, TA8256BH (36HFX72) LY22 23103852 COIL, FILTER, TEM2028AH Q610 23906880 IC, TA8246AH (36HF72) LY23 23289840 COIL, PEAKING, TRF4100AT Q610B 70391355 SCREW, 3X8MM...
  • Page 29 IC, NJM2700L (36HFX72) Q838B 70391355 SCREW, 3X8MM QD41 23000189 IC, TA2136N (36HF72) Q839 23905239 IC, PQ30RV1 QD42 23314085 TRANSISTOR, FET, 2SK372 V (36HFX72) Q839B 70391355 SCREW, 3X8MM QD44 23114460 TRANSISTOR, RN1204 (36HFX72) Q840 23905976 IC, PQ05RD11 QD45 23114460 TRANSISTOR, RN1204 (36HFX72)
  • Page 30 23118041 DIODE, MA111 D836 23316782 DIODE, ZENER, MTZJ6.2C DB40 23118041 DIODE, MA111 D837 23316678 DIODE, ZENER, MTZJ6.8B DD81 23118859 DIODE, 1SS133 (36HFX72) D840 23316962 DIODE, S1WBA20 DD82 23118859 DIODE, 1SS133 (36HFX72) D841 23316269 DIODE, AK04 DD83 23118859 DIODE, 1SS133 (36HFX72)
  • Page 31 DIODE, ZENER, MA8100-M GR107 24000445 CHIP JUMPER, 1608TYPE DV163 23316591 DIODE, ZENER, MA8100-M GRD80 24366472 CARBON FILM, 1/6W 4.7K OHM J (36HFX72) DV164 23316591 DIODE, ZENER, MA8100-M GRD82 24366472 CARBON FILM, 1/6W 4.7K OHM J (36HFX72) DV165 23316591 DIODE, ZENER, MA8100-M...
  • Page 32 23565643 OWNER’S MANUAL, ENGLISH/FRENCH, 36HFX72 * Y101 23565661 OWNER’S MANUAL, ENGLISH/FRENCH, 36HF72 CABINET PARTS A201 23530330 FRONT COVER ASSY 36HFX72 (36HFX72) A201 23530329 FRONT COVER ASSY 36HF72 (36HF72) A213 23428096 DOOR, DOOR 36HFX72 (36HFX72) A213 23428095 DOOR, DOOR 36HF72 (36HF72)

  • Page 33: Pc Boards Bottom View

    SIGNAL BOARD PD0650 BOTTOM (FOIL) SIDE – 33 – – 34 –...
  • Page 34 POWER/DEF BOARD PD0159 BOTTOM (FOIL) SIDE – 35 – – 36 –...
  • Page 35 CRT-D/VM BOARD PD0164 BOTTOM (FOIL) SIDE – 37 –...
  • Page 36 AC IN BOARD PD0161 BOTTOM (FOIL) SIDE LOW B BOARD PB9567 BOTTOM (FOIL) SIDE – 38 –...
  • Page 37 CONTROL-1 BOARD PD0651 BOTTOM (FOIL) SIDE – 39 –...
  • Page 38 CONTROL-2 BOARD PD0652 BOTTOM (FOIL) SIDE – 40 –...
  • Page 39 WOW BOARD PD0645 BOTTOM (FOIL) SIDE – 41 –...

  • Page 40: Terminal View Of Transistors

    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 41 SCHEMATIC DIAGRAM MODEL : 36HFX72 36HF72 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 – 44 –...

  • Page 43: Specifications

    SPECIFICATIONS(Represenlative: 36HFX72) 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: Circuit Block Diagram

    TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...
  • Page 45 SCHEMATIC DIAGRAM MODEL : 36HFX72 36HF72 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 46 – 44 –...

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36hf72Tac0230Tac0231

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