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Toshiba 36HFX70 Service Manual

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FILE NO. 020-200028

SERVICE MANUAL

COLOR TELEVISION
N0PS Chassis
36HFX70 , 36HF70
(TAC0030)
(TAC0031)
PUBLISHED IN JAPAN. Sep., 2000 So

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Summary of Contents for Toshiba 36HFX70

  • Page 1: Service Manual

    FILE NO. 020-200028 SERVICE MANUAL COLOR TELEVISION N0PS Chassis 36HFX70 , 36HF70 (TAC0030) (TAC0031) PUBLISHED IN JAPAN. Sep., 2000 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 once 2) Press MUTE button 3) While pressing the MUTE button, on Remote Control. again to keep pressing. press MENU button on TV set. MUTE (Service mode display) 2. DISPLAYING THE ADJUSTMENT MENU 1) Press MENU button on TV.
  • 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

    ← PARA E-W PARABOLA Table-2 OPTION: (PROGRESSIVE 4:3 DV) OPT1 (2CAH) OPT2(2CBH) MODELS D0 HEX D7 D0 HEX 36HFX70 36HF70 Item Name of adjustment Preset Data Remarks TVOP MAIN TUNER for STOP SUB TUNIER for STOP Non-Signal Audio Mute (0: on 1: off)

  • Page 15: Location Of Controls

    LOCATION OF CONTROLS TV Front MENU Video/Audio inputs VOLUME ts (Video 3) CHANNEL ts DEMO MENU TV/VIDEO VOLUME CHANNEL POWER VIDEO-3 IN S-VIDEO AUDIO VIDEO L/MONO POWER DEMO ANT/VIDEO Remote sensor TV Rear ANT(75 ANT-1 ANT-2 S-VIDEO COLOR COLOR STREAM STREAM VIDEO VIDEO...

  • 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: Circuit Block Diagram

    – 18 –...

  • Page 19: 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 : 36HFX70/36HF70 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 20 EL, 100?F, ±20%, 35V C612 24668101 C686 24503041 PF, 0.1?F, 63V EL, 4.7?F, ±20%, 50V C621 24206479 C686 24503041 PF, 0.1?F, 63V (36HFX70) EL, 0.1?F, ±20%, 50V C622 24206108 C704 24591822 PF, 8200pF Chip, 4700pF, ±10% C623 24109472 C705 24232103 CD, 0.01?F, +80%, -20%...
  • Page 21 Location Location Part No. Description Part No. Description EL, 47?F, ±20%, 16V CD, 470pF, ±10%, 500V C712 24666470 C886 24214471 EL, 10?F, ±20%, 200V EL, 3300?F, ±20%, 35V C713 24709100 C889 24668332 PF, 0.1?F, ±10%, 250V C714 24436101 CD, 100pF C891 24082229 CD, 4700pF, ±10%, 500V...
  • Page 22 Location Location Part No. Description Part No. Description CA20 24105181 Chip, 180pF CM09 24100104 Chip, 0.1?F, +80%, -20%, 25V CA21 24092538 Chip, 1?F, +80%, -20%, 10V CR12 24100104 Chip, 0.1?F, +80%, -20%, 25V CA22 24100103 Chip, 0.01?F, +80%, -20% CR13 24100104 Chip, 0.1?F, +80%, -20%, 25V CA23...
  • Page 23 Location Location Part No. Description Part No. Description EL, 22?F, ±20%, 10V CV30 24100103 Chip, 0.01?F, +80%, -20% CX145 24202220 EL, 47?F, ±20%, 16V CV37 24794470 CX146 24100104 Chip, 0.1?F, +80%, -20%, 25V Chip, 1000pF, ±10% CV39 24109102 CX162 24092441 Chip, 1?F, +80%, -20%, 16V EL, 47?F, ±20%, 16V EL, 33?F, ±20%, 16V...
  • Page 24 Location Location Part No. Description Part No. Description CX523 24105270 Chip, 27pF CY171 24100104 Chip, 0.1?F, +80%, -20%, 25V CX531 24105101 Chip, 100pF CY172 24100104 Chip, 0.1?F, +80%, -20%, 25V CX532 24105330 Chip, 33pF CY173 24100104 Chip, 0.1?F, +80%, -20%, 25V CX541 24105101 Chip, 100pF...
  • Page 25 Location Location Part No. Description Part No. Description Chip, 0.1?F, ±10%, 16V CY675 24092730 CZ57 24105181 Chip, 180pF Chip, 0.1?F, ±10%, 16V CY702 24092730 CZ58 24105560 Chip, 56pF Chip, 0.1?F, ±10%, 16V CY703 24092730 CZ60 24100104 Chip, 0.1?F, +80%, -20%, 25V Chip, 0.1?F, ±10%, 16V Chip, 0.1?F, ±10%, 16V CY711...
  • Page 26 Location Location Part No. Description Part No. Description R314 24011101 Chip, 100 ohm, 1/20W R424 24321229 OMF, 2.2 ohm, 1/2W R315 24011474 Chip, 470k ohm, 1/20W R424 24872272 Chip, 2700 ohm, 1/16W R317 24366472 CF, 4700 ohm R425 24872102 Chip, 1k ohm, 1/16W R318 24366101 CF, 100 ohm...
  • Page 27 Chip, 10k ohm, 1/16W R835 24366820 CF, 82 ohm R663 24872272 Chip, 2700 ohm, 1/16W R847 24872681 Chip, 680 ohm, 1/16W (36HFX70) R848 24872560 Chip, 56 ohm, 1/16W R663 24872822 Chip, 8200 ohm, 1/16W R849 24872391 Chip, 390 ohm, 1/16W...
  • Page 28 Location Location Part No. Description Part No. Description R917 24366431 CF, 430 ohm R997 24366332 CF, 3300 ohm R918 24366240 CF, 24 ohm R998 24366102 CF, 1k ohm R919 24366102 CF, 1k ohm R999 24366102 CF, 1k ohm R921 24366151 CF, 150 ohm R2020 24872101...
  • Page 29 Location Location Part No. Description Part No. Description R4767 24366911 CF, 910 ohm RA116 24872103 Chip, 10k ohm, 1/16W R4768 24366622 CF, 6200 ohm RA140 24872102 Chip, 1k ohm, 1/16W R4816 24366471 CF, 470 ohm RA191 24872101 Chip, 100 ohm, 1/16W R4818 24366681 CF, 680 ohm...
  • Page 30 Location Location Part No. Description Part No. Description RD22 24366821 CF, 820 ohm RS101 24872123 Chip, 12k ohm, 1/16W RD23 24366152 CF, 1500 ohm RS102 24872123 Chip, 12k ohm, 1/16W RD24 24366681 CF, 680 ohm RS103 24872103 Chip, 10k ohm, 1/16W RJ01 24366103 CF, 10k ohm...
  • Page 31 Location Location Part No. Description Part No. Description RV118 24872750 Chip, 75 ohm, 1/16W RV533 24011101 Chip, 100 ohm, 1/20W RV119 24872750 Chip, 75 ohm, 1/16W RV534 24011101 Chip, 100 ohm, 1/20W RV120 24366750 CF, 75 ohm RV544 24011103 Chip, 10k ohm, 1/20W RV121 24872100 Chip, 10 ohm, 1/16W...
  • Page 32 Location Location Part No. Description Part No. Description RX173 24011121 Chip, 120 ohm, 1/20W RX340 24019439 Chip, 47 ohm, 1/16W RX174 24011471 Chip, 470 ohm, 1/20W RX341 24019439 Chip, 47 ohm, 1/16W RX176 24872102 Chip, 1k ohm, 1/16W RX342 24019439 Chip, 47 ohm, 1/16W RX179 24011102...
  • Page 33 Location Location Part No. Description Part No. Description RX825 24011101 Chip, 100 ohm, 1/20W RY135 24011101 Chip, 100 ohm, 1/20W RX826 24011681 Chip, 680 ohm, 1/20W RY136 24011101 Chip, 100 ohm, 1/20W RX827 24011101 Chip, 100 ohm, 1/20W RY138 24011331 Chip, 330 ohm, 1/20W RX829 24011102...
  • Page 34 Location Location Part No. Description Part No. Description RY400 24011103 Chip, 10k ohm, 1/20W RZ11 24011561 Chip, 560 ohm, 1/20W RY401 24011103 Chip, 10k ohm, 1/20W RZ12 24011182 Chip, 1800 ohm, 1/20W RY426 24011103 Chip, 10k ohm, 1/20W RZ13 24011392 Chip, 3900 ohm, 1/20W RY440 24011103...
  • Page 35 L887 23103880 Coil (Ferrite Bead), TEM2011Y LX161 23246199 Chip, Inductor, TRF42R2CG L888 23248087 Coil, Choke, TLN3312D LX162 23246323 Chip, Inductor, TRF44R7CT (36HFX70) LX197 24000445 Chip Jumper, 1680 Type L888 23280016 Coil, Peaking, TRF4100AZ LX198 23103906 Chip (Ferrite Bead), (36HF70) TEM2118AS...
  • Page 36 Location Location Part No. Description Part No. Description LX243 23103906 Chip (Ferrite Bead), LY227 23103806 Chip (Ferrite Bead), TEM2114T TEM2118AS LY300 24000445 Chip Jumper, 1680 Type LX244 23103906 Chip (Ferrite Bead), LY301 24000445 Chip Jumper, 1680 Type TEM2118AS LY302 24000445 Chip Jumper, 1680 Type LX245 23103906...
  • Page 37 A6541130 Transistor, 2SA1162-Y T801 23211698 Line Filter, TRF3218AK Q552 A6541130 Transistor, 2SA1162-Y T803 23211729 Line Filter, TRF3232AQ Q610 B0377308 IC, TA8256BH (36HFX70) T840 23217233 Transformer, Converter, Q610 23906880 IC, TA8246AH (36HF70) TPW1547AZ Q610B 70391355 Screw, BITTB3X8 SZN T862 23217485 Transformer, Converter,...
  • Page 38 Location Location Part No. Description Part No. Description Q920 A6317440 Transistor, 2SC1815-Y QV244 A6335470 Transistor, 2SC2712-Y Q921 A6317440 Transistor, 2SC1815-Y QV245 A6335470 Transistor, 2SC2712-Y Q922 A6317440 Transistor, 2SC1815-Y QV246 A6335470 Transistor, 2SC2712-Y Q2104 23114530 Transistor, 2SA933S-Q QV247 A6335470 Transistor, 2SC2712-Y Q2105 23114530 Transistor, 2SA933S-Q...
  • Page 39 Location Location Part No. Description Part No. Description QX541 A6549570 Transistor, 2SA1586-Y QZ22 23314993 Transistor, 2SC4081T106Q QX542 A6549570 Transistor, 2SA1586-Y QZ23 A6549570 Transistor, 2SA1586-Y QX904 23314993 Transistor, 2SC4081T106Q QZ24 23314993 Transistor, 2SC4081T106Q QX910 23000263 IC, BU4053BCF-E2 QZ100 B0410868 IC, TC90A45F QX951 23000263 IC, BU4053BCF-E2...
  • Page 40 Location Location Part No. Description Part No. Description D721 23115537 Diode, 1SS131 DB05 23316675 Diode, Zener, MTZJ6.2B D801 23357041 Diode, LN6SB60-F05 DB10 23316574 Diode, Zener, MA8062-M, TX D801B 70391356 Screw, BITTB3X10 SZN DB11 23118041 Diode, MA111-(TX) D835 23118096 Diode, RK34, LF-A4 DB12 23118041 Diode, MA111-(TX)
  • Page 41 Location Location Part No. Description Part No. Description GJ120 24000824 Chip Jumper, 2125Type P801 23372113 Power Cord (36HFX70) PD02 23368130 Plug, 10P GJ501 24000445 Chip Jumper, 1680 Type PD02A 23902213 Socket, B-B, 10P GR03 24000445 Chip Jumper, 1680 Type PV01...
  • Page 42 Owner’s Manual, French, 36HFX70 Y101F 23565009 Owner’s Manual, French, 36HF70 CABINET PARTS CABINET PARTS CABINET PARTS CABINET PARTS CABINET PARTS A201 23540210 Front Cover (36HFX70) A201 23540232 Front Cover (36HF70) A213 23427860 Door (36HFX70) A213 23427865 Door (36HF70) A214 23451976 Push, Catch...

  • Page 43: Pc Boards Bottom View

    SIGNAL/CONV BOARD PB9568 BOTTOM (FOIL) SIDE – 43– – 44 –...
  • Page 44 POWER/DEF BOARD PB9565 BOTTOM (FOIL) SIDE – 45 – – 46 –...
  • Page 45 CONTROL-1 BOARD PB9570 BOTTOM (FOIL) SIDE –47 – –48 –...
  • Page 46 CONTROL-2 BOARD PB9571 BOTTOM (FOIL) SIDE – 49 – – 50 –...
  • Page 47 HYPER PRO BOARD PB9584 CRT/ VM BOARD PB9569 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE – 51 – – 52 –...
  • Page 48 AC IN BOARD PB9566 BOTTOM (FOIL) SIDE SRS PRO BOARD PB9587 LOW B BOARD PB9567 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE – 53 – – 54 –...

  • Page 49: 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 50 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 56 –...

  • Page 51: Specifications

    SPECIFICATIONS (Representative: 36HFX70) 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 52 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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