Toshiba 32AFX62 Service Manual
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Toshiba 32AFX62 Service Manual

Toshiba 32AFX62 Service Manual

N2ns chassis
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FILE NO. 020-200219
SERVICE MANUAL
COLOR TELEVISION
N2NS Chassis
32AFX62 , 36AFX62
(TAC0220)
(TAC0221)
PUBLISHED IN JAPAN. Aug. 2002 So

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  • Page 1 FILE NO. 020-200219 SERVICE MANUAL COLOR TELEVISION N2NS Chassis 32AFX62 , 36AFX62 (TAC0220) (TAC0221) 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 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

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 32" 36" HIGH VOLTAGE AT ZERO BEAM: 32.7 kV 32.7 kV MAX HIGH VOLTAGE: 34.1 kV 34.1 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Name of adjustment Preset Data...

  • Page 15: Location Of Controls

    LOCATION OF CONTROLS (Representative: 32AFX62) TV Front Power Indicator VOLUME ts Video/Audio inputs (Video 3) CHANNEL ts MENU VIDEO-3 S-VIDEO VIDEO L/MONO AUDIO INSIDE DOOR TV/VIDEO DEMO POWER Remote Sensor TV Rear AUDIO CENTER ANT(75 CHANNEL IN ANT-1 ANT-2 S-VIDEO...
  • 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 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

    C420 24666101 ELECTROLYTIC, 16V 100UF M 3A C213 24206010 ELECTROLYTIC, 50V 1.0UF M 7L 3A C423 24503125 PLASTIC FILM, 400V 0.075UF J (32AFX62) C214 24794220 ELECTROLYTIC, 16V 22UF M C423 24503124 PLASTIC FILM CQ92 T 400V 68000PF J C220 24436680...
  • Page 19 C482 24539474 PLASTIC FILM, 50V 0.47UF J C675 24667470 ELECTROLYTIC, 25V 47UF M 3A C483 24503037 MT PLA CAP 63V 0.047UF J (32AFX62) C676 24797479 ELECTROLYTIC, 50V 4.7UF M * C491 24082920 PLASTIC FILM CF92 T 315V 0.39UF J C677...
  • Page 20 Location Location Parts No. Description Parts No. Description C876 24503041 PLASTIC FILM , 63V 0.1UF J CB14 24474101 CERAMIC, 50V B 100PF K C877 24092345 CERAMIC DISC, 2KV 1000PF K CB15 24794100 ELECTROLYTIC, 16V 10UF M C884 24086049 ELECTROLYTIC, 160V 330UF M 3D CB40 24206010 ELECTROLYTIC, 50V 1.0UF M 7L 3A...
  • Page 21 FUSIBLE, 1W 1K OHM J R310 24366102 CARBON FILM, 1/6W 1K OHM J R442 24382153 OXIDE METAL FILM, 1W 15K OHM J (32AFX62) R312 24366103 CARBON FILM, 1/6W 10K OHM J R442 24382513 OXIDE METAL FILM, 1W 51K OHM J (36AFX62)
  • Page 22 CARBON FILM, 1/6W 33K OHM J R673 24366272 CARBON FILM, 1/6W 2.7K OHM J * R453 24327512 METAL FILM, 1/4W 5.1K OHM F (32AFX62) R675 24366103 CARBON FILM, 1/6W 10K OHM J * R453 24327472 METAL FILM 1/4W 4R7K F (36AFX62)
  • Page 23 CARBON FILM, 1/6W 1K OHM J R3443 24005016 METAL GLAZE, 1/2W 180K OHM J * R920 24000884 FUSIBLE Z 1W 3.0 J (32AFX62) R3444 24005016 METAL GLAZE, 1/2W 180K OHM J * R920 24000883 FUSIBLE, 1W 3.6 OHM J (36AFX62)
  • Page 24 Location Location Parts No. Description Parts No. Description RA60 24366101 CARBON FILM, 1/6W 100 OHM J RM16 24366101 CARBON FILM, 1/6W 100 OHM J RA71 24366273 CARBON FILM, 1/6W 27K OHM J RM18 24366102 CARBON FILM, 1/6W 1K OHM J RA72 24366153 CARBON FILM, 1/6W 15K OHM J...
  • Page 25 Q152 23314965 TRANSISTOR, KTC3198 Y L400 23289840 COIL, PEAKING, TRF4100AT Q201 23314965 TRANSISTOR, KTC3198 Y * L441 23233092 COIL, TLN2138G (32AFX62) Q202 23314965 TRANSISTOR, KTC3198 Y * L441 23233045 COIL, HOLIZ LINEARITY, TLN2083G (36AFX62) Q203 23114437 TRANSISTOR, 2SC752GTM-Y L442 23248121...
  • Page 26 Location Location Parts No. Description Parts No. Description Q263 23314962 TRANSISTOR, KTA1266 Y Q903 23314780 TRANSISTOR, 2SC4544 Q301 23905610 IC, LA7846N Q904 23314965 TRANSISTOR, KTC3198 Y Q301B 72471082 SCREW, 3X10MM Q905 23314780 TRANSISTOR, 2SC4544 Q302 23905871 IC, TA1241AN Q906 23314965 TRANSISTOR, KTC3198 Y Q306 23314962...
  • Page 27 Location Location Parts No. Description Parts No. Description QW17 23114463 TRANSISTOR, RN1201 D850 23316673 DIODE, ZENER, MTZJ5.6C QW18 23314962 TRANSISTOR, KTA1266 Y D855 23118859 DIODE, 1SS133 QY80 23314965 TRANSISTOR, KTC3198 Y D862 23118094 DIODE, EU2A QZ11 23314965 TRANSISTOR, KTC3198 Y D864 23118094 DIODE, EU2A...
  • Page 28 23368520 CONNECTOR, 20P, 2MM A225 23445612 BUTTON, POWER BUTTON (32AFX62) PV06 23368520 CONNECTOR, 20P, 2MM A411 23540031 COVER, BACK COVER PROPER (32AFX62) PV07 23368273 CONNECTOR, PLUG, B-B 12P A411 23540212 COVER, B/C PROPER (36AFX62) S602 23145412 SWITCH, SLIDE SW 2C2P...
  • Page 29 Location Location Parts No. Description Parts No. Description A703 23946056 PACKING, TOP PACKING (32AFX62) A703 23946353 PACKING, TOP PACKING (36AFX62) A708 23946057 PACKING, BOTTOM PACKING (32AFX62) A708 23946354 PACKING, BOTTOM PACKING (36AFX62) – 29 –...
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  • Page 31: Pc Boards Bottom View

    SIGNAL BOARD PB9635G BOTTOM (FOIL) SIDE C103 P498 GJ15 L101 C106 BB51 BB61 Q451 BB111 BB81 C360 RA02 P497 RA87 M611A R4461 R451 R452 LA22 CA25 RA86 RA03 RA06 RA09 RA30 R4463 RA27 CA30 QB14 QB03 RA01 Q4460 Q4461 H001 Q612 DA45 CA29...
  • Page 32 POWER/DEF BOARD PB9631G BOTTOM (FOIL) SIDE – 33 – – 34 –...
  • Page 33 CRT DRIVE BOARD PB9973K BOTTOM (FOIL) SIDE – 35 –...
  • Page 34 BACK A/V BOARD PB9633A BOTTOM (FOIL) SIDE – 36 –...
  • Page 35 CONTROL-1 BOARD PD0651B BOTTOM (FOIL) SIDE – 37 –...
  • Page 36 CONTROL-2 BOARD PD0652B BOTTOM (FOIL) SIDE – 38 –...

  • Page 37: 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...
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  • Page 39 SCHEMATIC DIAGRAM MODEL : 32AFX62 / 36AFX62 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 40 – 42 –...

  • Page 41: Specifications

    SPECIFICATIONS (Representative: 32AFX62) 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 42: Circuit Block Diagram

    TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...
  • Page 43 SCHEMATIC DIAGRAM MODEL : 32AFX62 / 36AFX62 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 44 – 42 –...

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