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Toshiba 36AX61 Service Manual

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FILE NO. 020-200102

SERVICE MANUAL

COLOR TELEVISION
N1N Chassis
36AX61
(TAC0113)
PUBLISHED IN JAPAN. Mar., 2001 So

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  Summary of Contents for Toshiba 36AX61

  • Page 1: Service Manual

    FILE NO. 020-200102 SERVICE MANUAL COLOR TELEVISION N1N Chassis 36AX61 (TAC0113) PUBLISHED IN JAPAN. Mar., 2001 So...
  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 SET-UP ADJUSTMENT ............................4 SERVICE MODE ..............................8 DESIGN MODE ..............................11 ELECTRICAL ADJUSTMENT ..........................12 CIRCUIT CHECKS ..............................16 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................17 LOCATION OF CONTROLS ...........................
  • 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 (FOR 13”, 14”, 19”, 20”) 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 CIRCUMFERENCE CONVERGENCE ADJUSTMENT NOTE: Before attempting any convergence adjustments, the 1. Loosen the clamping screw of deflection yoke slightly to receiver should be operated for at least fifteen min- allow the yoke to tilt. utes. 2. Temporarily put a wedge as shown in figure 1. (Do not remove cover paper on adhesive part of the wedge.) CENTER CONVERGENCE ADJUSTMENT 3.
  • Page 6 WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU- TION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL. (FOR 35”, 36”) 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 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 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 17) 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: Design Mode

    DESIGN MODE 1. ENTERING TO DESIGN MODE 1) Select the Service mode. 2) While pressing RECALL button on 3) Press MENU button on TV. Remote and press MENU button on TV. Item Press Data Press (Design mode) (Adjustment mode) When QA02 is initialized, items “OPT0”, “OPT1” and “OPT2” of DESIGN MODE are set to the data of the representative model of this chassis family.
  • Page 12: Electrical Adjustment

    ELECTRICAL ADJUSTMENT 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 13 ITEM ADJUSTMENT PROCEDURE HORIZONTAL POSITION 1. Call up the adjustment mode display, then select the item HPOS or VPOS. (HPOS) 2. Press the TV/VIDEO button on Remote until the VERTICAL POSITION white cross-bar or black cross-bar pattern appears (VPOS) on the screen. 3.
  • Page 14 MTS ADJUSTMENT (FOR N1N CHASSIS) ITEM INPUT SIGNAL ADJUSTMENT PROCEDURE STEREO VCO • No signal 1. Display item STVC, and connect pin 9 of (STVC) H002 to ground. 2. Connect frequency counter to pin 12 of H002. 3. Change data by Volume s/t buttons so that the reading of counter becomes value as close as 4fH (62.936kHz).
  • Page 15 MTS ADJUSTMENT (FOR N0ES CHASSIS) ITEM INPUT SIGNAL ADJUSTMENT PROCEDURE • 1kHz 30% mod. → ANT ATTENUATOR 1. Connect rms meter to pin 34 of QG01. (ATT) terminal 2. Display item ATT on screen. 3. Change data by VOLUME s/t buttons so that the reading of meter becomes value as close as 137mVrms.
  • Page 16: 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 Check that the set returns to normal operation when pin 12 below. of Z801(or emitter of Q472) is grounded with jumper wire.
  • Page 17: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 36" HIGH VOLTAGE AT ZERO BEAM: 31.9kV MAX HIGH VOLTAGE: 33.3kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Name of adjustment Preset 36" Item Name of adjustment Preset 36"...
  • Page 18: Location Of Controls

    LOCATION OF CONTROLS Front view Rear view VIDEO/AUDIO terminals Antenna/Cable terminals POWER indicator (RED) MENU TV/VIDEO VOLUME CHANNEL VIDEO-3 IN AUDIO VIDEO L/MONO INSIDE DOOR POWER RMT Sensor VIDEO-3 IN MENU VOLUME T/S TV/VIDEO CHANNEL t/ s – 18 –...
  • Page 19: 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 20: 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 21: Circuit Block Diagram

    – 21 –...
  • Page 22: 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 : 36AX61 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 23 Location Location Part No. Description Part No. Description EL, 100?F, ±20%, 6.3V C477 24503041 PF, 0.1?F, 63V C842 24792101 EL, 22?F, ±20%, 50V EL, 4.7?F, ±20%, 50V C480 24747220 C843 24797479 EL, 330?F, ±20%, 160V C481 24503049 PF, 0.22?F, 63V C884 24086049 EL, 0.47?F, ±20%, 50V...
  • Page 24 Location Location Part No. Description Part No. Description EL, 10?F, ±20%, 16V CG44 24203100 CV29 24232103 CD, 0.01?F, +80%, -20% EL, 100?F, ±20%, 16V CG46 24203101 CV31 24503041 PF, 0.1?F, 63V EL, 22?F, ±20%, 50V EL, 470?F, ±20%, 16V CG60 24797220 CV38 24763471...
  • Page 25 Location Location Part No. Description Part No. Description R245 24366104 CF, 100k ohm R441 24532102 FR, 1k ohm, 1W R261 24366472 CF, 4700 ohm R448 24338478 MF, 0.47 ohm, 1W R262 24366102 CF, 1k ohm R456 24366103 CF, 10k ohm R263 24366472 CF, 4700 ohm...
  • Page 26 Location Location Part No. Description Part No. Description R724 24366331 CF, 330 ohm R942 24366562 CF, 5600 ohm R725 24366182 CF, 1800 ohm R943 24366562 CF, 5600 ohm R730 24552100 OMF, 10 ohm, 1/2W R944 24366562 CF, 5600 ohm R731 24552331 OMF, 330 ohm, 1/2W R945...
  • Page 27 Location Location Part No. Description Part No. Description RA34 24366102 CF, 1k ohm RG72 24366222 CF, 2200 ohm RA35 24366102 CF, 1k ohm RJ01 24366103 CF, 10k ohm RA36 24366103 CF, 10k ohm RJ02 24366102 CF, 1k ohm RA37 24366331 CF, 330 ohm RJ04 24366102...
  • Page 28 Location Location Part No. Description Part No. Description RV02 24366750 CF, 75 ohm L901 23200447 Coil, Degaussing, TSB-2407AK RV04 24366750 CF, 75 ohm L902 23289221 Coil, Peaking, TRF4221AF RV05 24366750 CF, 75 ohm L903 23289221 Coil, Peaking, TRF4221AF RV07 24366103 CF, 10k ohm L904 23289221...
  • Page 29 Location Location Part No. Description Part No. Description Q710 23114530 Transistor, 2SA933S-Q QZ08 A6335470 Transistor, 2SC2712-Y Q711 A6550640 Transistor, 2SA1837 D101 23316755 Diode, Zener, MTZJ33C Q712 A6369650 Transistor, 2SC4793 D201 23118859 Diode, 1SS133 Q719 23114528 Transistor, 2SC1740S, Q D221 23118859 Diode, 1SS133 Q720 23114528...
  • Page 30 Location Location Part No. Description Part No. Description D906 23118859 Diode, 1SS133 SR83 23146564 Relay, DC12V D907 23118859 Diode, 1SS133 V901A 23902068 Socket, CRT, 10P D908 23118859 Diode, 1SS133 W661 23351088 Speaker, SPK-1360, D909 23118859 Diode, 1SS133 60X120mm, 8 ohm D910 23118859 Diode, 1SS133...
  • Page 31: Pc Boards Bottom View

    SIGNAL BOARD PB9966 BOTTOM (FOIL) SIDE – 31 – – 32 –...
  • Page 32 POWER/DEF BOARD PB9965 BOTTOM (FOIL) SIDE – 33 – – 34 –...
  • Page 33 CRT DRIVE BOARD PB9973 BOTTOM (FOIL) SIDE – 35 –...
  • Page 34 3L BOARD PB9398A BOTTOM (FOIL) SIDE – 36 –...
  • Page 35: 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 2SD2553 RN1204 2SC5143 RN2204 RN1205 RN1202 RN1201 –...
  • Page 36 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 38 –...
  • Page 37 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 39 –...
  • Page 38 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 40 –...
  • Page 39: Specifications

    SPECIFICATIONS 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) POWER SOURCE 120V AC, 60Hz AUDIO POWER...
  • Page 40 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...