Toshiba 34HF83 Service Manual
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Toshiba 34HF83 Service Manual

Toshiba 34HF83 Service Manual

N3ws chassis
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FILE NO. 070-200307

SERVICE MANUAL

COLOR TELEVISION
N3WS Chassis
34HF83
(TAC0322)
PUBLISHED IN JAPAN. May. 2003 So

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Summary of Contents for Toshiba 34HF83

  • Page 1: Service Manual

    FILE NO. 070-200307 SERVICE MANUAL COLOR TELEVISION N3WS Chassis 34HF83 (TAC0322) PUBLISHED IN JAPAN. May. 2003 So...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 SET-UP ADJUSTMENT ............................4 SERVICE MODE ..............................6 ELECTRICAL ADJUSTMENTS ..........................9 CIRCUIT CHECKS ..............................11 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................12 LOCATION OF CONTROLS ........................... 13 ADDING CHANNELS TO THE TV'S 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 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 SERVICE MANUAL. SET-UP ADJUSTMENT FOR FLAT TUBE I 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 (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 6: 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 7 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 12) 5.
  • Page 8 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 9: 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 10 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 11: 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 12: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 34" HIGH VOLTAGE AT ZERO BEAM: 30.0 kV MAX HIGH VOLTAGE: 35.0 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATA IN THE SERVICE MODE: NORMAL NORMAL Preset Item Name of adjustment Preset Item Name of adjustment...

  • Page 13: Location Of Controls

    LOCATION OF CONTROLS TV Front Remote sensor MENU ; : ts Power indicator L/MONO MENU TV/VIDEO VOLUME CHANNEL POWER S-VIDEO VIDEO AUDIO VIDEO-3 IN MENU Video 3 TV/VIDEO Channel ts Video/Audio inputs POWER Volume ; : (behind the door) TV Rear ANT OUT ANT-2 IN DV/HDCP IN...

  • Page 14: Remote Control

    Remote Control POWER TV / VIDEO RECALL POWER INFO INFO (CBL/SAT only) Channel Numbers (0-9) CHRTN +10 (DVD only) GUIDE (CBL/SAT only) TOP MENU (DVD only) 89; : (DVD only) MENU DVDMENU ENTER CLEAR (DVD only) Device Switch CBL/SAT CH 89 POP DIRECT CH MUTE SLEEP PAUSE...

  • Page 15: Adding Channels To The Tv's Memory

    ADDING CHANNELS TO THE TV’S MEMORY When you press Channel 8 or 9, your TV will stop only on the channels stored in the TV’s channel memory. Follow the steps below to program all active channels into the TV’s memory. Programming channels automatically Your TV can automatically detect all active channels in your Press 8 or 9 to highlight ADD/ERASE.

  • Page 16: 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 : 34HF83 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 17 Location Location Parts No. Description Parts No. Description * C812 C527 24109103 CERAMIC CHIP, 50V B 0.01UF K 24092583 CERAMIC DISC, AC250V E 2200PF M C528 24109103 CERAMIC CHIP, 50V B 0.01UF K * C815 24092591 CERAMIC DISC, AC250V B 470PF K C529 24109103 CERAMIC CHIP, 50V B 0.01UF K...
  • Page 18 Location Location Parts No. Description Parts No. Description C913 24666102 ELECTROLYTIC, 16V 1000UF M 3A CA52 24109103 CERAMIC CHIP, 50V B 0.01UF K C914 24232103 CERAMIC DISC, 50V F 0.01UF Z CA54 24092730 CERAMIC CHIP, 16V B 0.1UF K C918 24503041 PLASTIC FILM , 63V 0.1UF J CA55...
  • Page 19 Location Location Parts No. Description Parts No. Description CI23 24109103 CERAMIC CHIP, 50V B 0.01UF K CV39 24109102 CERAMIC CHIP, 50V B 1000PF K CI25 24105240 CERAMIC CHIP, 50V CH 24PF J CV40 24794101 ELECTROLYTIC, 16V 100UF M CI51 24797220 ELECTROLYTIC, 50V 22UF M CV42 24100104...
  • Page 20 Location Location Parts No. Description Parts No. Description CY539 24794470 ELECTORLYTIC, 16V 47UF M R416 24383680 OXIDE METAL FILM, 2W 68 OHM J CY582 24105101 CERAMIC CHIP, 50V CH 100PF J R422 24011472 CHIP, METAL FILM, 1/20W 4.7K OHM J R423 24011103 CHIP, METAL FILM, 1/20W 10K OHM J...
  • Page 21 Location Location Parts No. Description Parts No. Description R614 24011221 CHIP, METAL FILM, 1/20W 220 OHM J R842 24376563 CARB0N FILM, 1/2W 56K OHM J R615 24011221 CHIP, METAL FILM, 1/20W 220 OHM J R843 24376563 CARB0N FILM, 1/2W 56K OHM J R616 24011182 CHIP, METAL FILM, 1/20W 1.8K OHM J...
  • Page 22 Location Location Parts No. Description Parts No. Description R964 24383153 OXIDE METAL FILM, 2W 15K OHM J R4401 24011302 CHIP, METAL FILM, 1/20W 3K OHM J R965 24383153 OXIDE METAL FILM, 2W 15K OHM J R4403 24011471 CHIP, METAL FILM, 1/20W 470 OHM J R977 24366561 CARBON FILM, 1/6W 560 OHM J...
  • Page 23 Location Location Parts No. Description Parts No. Description RA39 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RB81 24011122 CHIP, METAL FILM, 1/20W 1.2K OHM J RA40 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RB82 24011123 CHIP, METAL FILM, 1/20W 12K OHM J RA41 24011332 CHIP, METAL FILM, 1/20W 3.3K OHM J...
  • Page 24 Location Location Parts No. Description Parts No. Description RJ02 24000359 METAL FILM, 1/4W 1.1K OHM F RS63 24011102 CHIP, METAL FILM, 1/20W 1K OHM J RJ03 24366512 CARBON FILM, 1/6W 5.1K OHM J RS64 24011393 CHIP, METAL FILM, 1/20W 39K OHM J RJ05 24310159 OXIDE METAL FILM, 1/2W 1.5 OHM J...
  • Page 25 Location Location Parts No. Description Parts No. Description RV79 24011272 CHIP, METAL FILM, 1/20W 2.7K OHM J RY542 24011392 CHIP, METAL FILM, 1/20W 3.9K OHM J RV82 24011562 CHIP, METAL FILM, 1/20W 5.6K OHM J RY543 24011152 CHIP, METAL FILM, 1/20W 1.5K OHM J RV100 24366750 CARBON FILM, 1/6W 75 OHM J RY545 24011101...
  • Page 26 Location Location Parts No. Description Parts No. Description L840 23280019 COIL, PEAKING, TRF4330AZ LV271 23289840 COIL, PEAKING, TRF4100AT L861 23103145 FERRITE CHOKE, TEM2011AA LY100 23246223 COIL, CHIP INDUCTOR, TRF4330CG L862 23103145 FERRITE CHOKE, TEM2011AA LY101 23103827 INDUCTOR, BEAD, TEM2120M L883 23103145 FERRITE CHOKE, TEM2011AA LY102...
  • Page 27 Location Location Parts No. Description Parts No. Description Q610B 70391355 SCREW, BIND HEAD TAP-TITE B, Q4703 23314994 TRANSISTOR, 2SA1576A106 BITTB 3X8 SZN Q4819 23205085 TRANSISTOR, 2SC5343-Y(BUL Q611 23314183 TRANSISTOR, 2SC4213-B QA01 23009506 IC, MCU 1CHIP 16BIT 4M 64P, MN102H85KFK Q612 23314994 TRANSISTOR, 2SA1576A106 QA02...
  • Page 28 Location Location Parts No. Description Parts No. Description QY102 23314993 TRANSISTOR, 2SC4081 Q D611 23316231 DIODE, 1SS355 QY103 23314994 TRANSISTOR, 2SA1576A106 D612 23118131 DIODE, 1SS193 QY501 23000812 IC, TA1340F D613 23316231 DIODE, 1SS355 QY502 23205014 TRANSISTOR, 2SC4667-O D614 23316231 DIODE, 1SS355 QY503 23314994 TRANSISTOR, 2SA1576A106 D615...
  • Page 29 Location Location Parts No. Description Parts No. Description D966 23118859 DIODE, 1SS133 F801A 23165433 FUSE HOLDER, 5.2 SOC D4401 23316591 DIODE, ZENER, MA8100-M F801B 23165433 FUSE HOLDER, 5.2 SOC D4603 23316231 DIODE, 1SS355 * F840 23144581 FUSE, AXIAL, 125V 200MA D4819 23316454 SCR, SF0R3G42NG5H...
  • Page 30 CABINET PARTS PV02 23023096 JACK, PIN 10P SMK LAP5120-0401FC PV05 23023095 JACK, PIN 8P SMK LAP5120-0411FC * A201 23530900 COVER, FRONT COVER ASSY, 34HF83 S601 23344456 SWITCH, SLIDE SK22F28G9A MORNI A205 23802275 BOX, SP BOX (R) 25ZS5, 25ZS5:S1399E246 SA01 23145227...

  • Page 31: Pc Boards Bottom View

    SIGNAL BOARD PD1086 BOTTOM (FOIL) SIDE – 32 – – 31 –...
  • Page 32 POWER/DEF BOARD PD1087 BOTTOM (FOIL) SIDE – 33 – – 34 –...
  • Page 33 CONT BOARD PD1088-1 BOTTOM (FOIL) SIDE – 35 – – 36 –...
  • Page 34 LED BOARD PD1088-2 VERT BOARD PD1090 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE AC-IN BOARD PD1091 BOTTOM (FOIL) SIDE IF BOARD PD1022B BOTTOM (FOIL) SIDE – 37 – – 38 –...
  • Page 35 CRT-D/SVM BOARD PD1173B BOTTOM (FOIL) SIDE – 39 –...

  • Page 36: 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 37: Schematic Diagram

    SCHEMATIC DIAGRAM MODEL : 34HF83 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 38 – 42 –...

  • Page 39: Specifications

    SPECIFICATIONS Television System Dimensions NTSC standard Width 36-13/16 inches (935 mm) Height 24-39/64 inches (625 mm) Channel Coverage Depth 23-25/32 inches (604 mm) VHF: 2 through 13 UHF: 14 through 69 Mass Cable TV: Mid band (A-8 through A-1, A through I) 75.7kg Super band (J through W) Hyper band (AA through ZZ, AAA, BBB)
  • Page 40 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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