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Toshiba 32A62 Service Manual

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FILE NO. 020-200204
SERVICE MANUAL
COLOR TELEVISION
N2S Chassis
32A62
(TAC0203)
PUBLISHED IN JAPAN, May, 2002 So

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  • Page 1 FILE NO. 020-200204 SERVICE MANUAL COLOR TELEVISION N2S Chassis 32A62 (TAC0203) PUBLISHED IN JAPAN, May, 2002 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 ..............................15 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................16 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 hazardous 2. This receiver is equipped with a Fail Safe (FS) circuit which 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 16) 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 3) Press MENU button on TV. 1) Select the Service mode. 2) While pressing RECALL button on Remote and press MENU button on TV. Item Press Data Press (Design mode) (Adjustment mode) When QA02 is initialized, items “OPT0” and “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 N2N, N2F, N2ES, N2S CHASSIS) ITEM INPUT SIGNAL ADJUSTMENT PROCEDURE • 1kHz 30% mod. → ANT ATTENUATOR 1. Connect rms meter to pin 34 of QG01. terminal (ATT) 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 15: 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 16: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 32" HIGH VOLTAGE AT ZERO BEAM: 31.6kV MAX HIGH VOLTAGE: 33.0 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Name of adjustment Data Item Name of adjustment Data HEIGHT RCUT...

  • Page 17: Location Of Controls

    LOCATION OF CONTROLS Front view VIDEO-3 IN MENU TV/VIDEO VOLUME CHANNEL AUDIO VIDEO L/MONO INSIDE DOOR POWER indicator VOLUME T / S MENU POWER TV/VIDEO CHANNEL t/ s Remote sensor Rear view ANT(75 ) DVD IN S-VIDEO COLOR STREAM VIDEO INPUT VIDEO MONO...
  • Page 18 Remote Control RECALL LIGHT LIGHT RECALL POWER POWER TV/CABLE/VCR switch MUTE TV/VIDEO TIMER CABLE Set to “TV” to control the TV. TIMER MUTE TV/VIDEO CHANNEL s/t Channel Number VOLUME s/t CH RTN CH RTN C. CAPT ADV/ PIP CH MENU ENTER PIP CH s FAV t...

  • Page 19: 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 20: 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 : 32A62 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 21 Location Location Parts No. Description Parts No. Description C464 24640872 ELECTROLYTIC CE04R 100V 10UF M 3A C910 24797478 ELECTROLYTIC, 50V 0.47UF M * C467 24082095 PLASTIC FILM, 630V 0.018UF C911 24794100 ELECTROLYTIC, 16V 10UF M C469 24082095 PLASTIC FILM, 630V 0.018UF C912 24763471 ELECTROLYTIC, 16V 470UF M...
  • Page 22 Location Location Parts No. Description Parts No. Description CS44 24436331 CERAMIC DISC, 50V SL 330PF J CZ35 24105390 CERAMIC CHIP, 50V CH 39PF J CS45 24436331 CERAMIC DISC, 50V SL 330PF J CZ37 24203100 ELECTORLYTIC, 16V 10UF M 7L 3A CS46 24436331 CERAMIC DISC, 50V SL 330PF J...
  • Page 23 Location Location Parts No. Description Parts No. Description R418 24383181 OXIDE METAL FILM, 2W 180 OHM J R898 24010001 CARBON FILM, 1/2W 3.9M J R430 24366102 CARBON FILM, 1/6W 1K OHM J R901 24552102 OXIDE METAL FILM, 1/2W 1K OHM J R431 24366103 CARBON FILM, 1/6W 10K OHM J...
  • Page 24 Location Location Parts No. Description Parts No. Description RA09 24366102 CARBON FILM, 1/6W 1K OHM J RR01 24366102 CARBON FILM, 1/6W 1K OHM J RA10 24366103 CARBON FILM, 1/6W 10K OHM J RR02 24366472 CARBON FILM, 1/6W 4.7K OHM J RA13 24366103 CARBON FILM, 1/6W 10K OHM J...
  • Page 25 Location Location Parts No. Description Parts No. Description RZ04 24872122 CHIP, METAL FILM, 1/16W 1.2K OHM J T862 23217558 TRANSFORMER, CONV TRS EER, RZ05 24872471 CHIP, METAL FILM, 1/16W 470 OHM J TPW3498AE RZ06 24872821 CHIP, METAL FILM, 1/16W 820 OHM J SEMICONDUCTORS RZ08 24872122...
  • Page 26 Location Location Parts No. Description Parts No. Description QB41 23314965 TRANSISTOR, KTC3198 Y D840 23316962 DIODE, S1WBA20 QG01 23906499 IC, UPC1851BCU D845 23118859 DIODE, 1SS133 QS60 23314965 TRANSISTOR, KTC3198 Y D855 23118859 DIODE, 1SS133 QS61 23314965 TRANSISTOR, KTC3198 Y D883 23357344 DIODE, VRM=600V IF(AV)=1.5A, RU3AM QS62...
  • Page 27 TIF 181CH PH 5V MPX BUNKI, EL968L HY01 23321437 TIF 181CH PH 5V, EL975L ACCESSORIES K912 23306263 REMOTE CONTROL TRANSMITTER, CT-9946 Y101 23565629 OWNER’S MANUAL, ENGLISH, 32A62 Y101F 23565630 OWNER’S MANUAL, FRENCH, 32A62 CABINET PARTS A201 23530264 FRONT COVER ASSY 32A62 A213 23428083...
  • Page 28 THIS PAGE IS INTENTIONALLY LEFT BLANK. – 28 –...

  • Page 29: Pc Boards Bottom View

    SIGNAL BOARD PD0654C BOTTOM (FOIL) SIDE – 29 – – 30 –...
  • Page 30 POWER/DEF BOARD PD0701 BOTTOM (FOIL) SIDE – 31 – – 32 –...
  • Page 31 CRT DRIVE BOARD PD0655 BOTTOM (FOIL) SIDE 3L BOARD PB9398 BOTTOM (FOIL) SIDE – 33 –...

  • Page 32: Terminal View Of Transistors

    TERMINAL VIEW OF TRANSISTORS 2SD2253 2SC3852 2SC752GTM 2SC752 2SA1788 (old) 2SD1763A 2SA562TM 2SC2482 2SC5243 2SC1569 2SC2655 2SA1015 2SC4544 2SC4721P 2SC1815 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 2SD1554 ON4409 RN2203 RN2201 2SD2253 RN2004 2SD1556 RN1203 2SD2553 2SC5143 RN1204 RN2204 RN1205 RN1202 RN1201 –...
  • Page 33 SCHEMATIC DIAGRAM MODEL : 32A62 Chassis No. TAC0203 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 34 – 36 –...

  • Page 35: 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, 102W AUDIO POWER...

  • Page 36: Circuit Block Diagram

    TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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Tac0203

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