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Toshiba 34HF84 Service Manual
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Toshiba 34HF84 Service Manual

N4ws chassis
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FILE NO. 020-200406

SERVICE MANUAL

Color Television
N4WS Chassis
34HF84
(TAC0404)
DOCUMENT CREATED IN JAPAN, June, 2004

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Summary of Contents for Toshiba 34HF84

  • Page 1: Service Manual

    FILE NO. 020-200406 SERVICE MANUAL Color Television N4WS Chassis 34HF84 (TAC0404) DOCUMENT CREATED IN JAPAN, June, 2004...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 SET-UP ADJUSTMENT ............................4 SERVICE MODE ..............................6 ELECTRICAL ADJUSTMENTS ..........................8 CIRCUIT CHECKS ..............................10 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................11 LOCATION OF CONTROLS ........................... 12 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 ■ 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. MUTE (Service mode display) 2. DISPLAYING THE ADJUSTMENT MENU 1) Press MENU button on TV.
  • Page 7 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of CHANNEL button in the service mode changes the adjustment items in the order of table-2. button for reverse order) Refer to table-2 for preset data of adjustment mode. (See SETTING & ADJUSTING DATA on page 11) 5.

  • Page 8: 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 9 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 button to make vertical lines straight as shown below. HORIZONTAL POSITION 1.

  • Page 10: 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 11: 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 12: Location Of Controls

    LOCATION OF CONTROLS TV Front Remote sensor MENU x •zy Power indicator Front L/MONO MENU TV/VIDEO VOLUME CHANNEL POWER S-VIDEO VIDEO AUDIO VIDEO-3 IN Video 3 Channel zy MENU TV/VIDEO Video/audio inputs (behind the door) Volume x • POWER TV Rear ANT OUT HDMI IN ANT-1 IN...

  • Page 13: 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) y z x • (DVD only) MENU DVDMENU ENTER CLEAR (DVD only) Device Switch CBL/SAT CH y z POP DIRECT CH MUTE...

  • Page 14: Adding Channels To The Tv's Memory

    ADDING CHANNELS TO THE TV’S MEMORY When you press Channel , your TV will stop only on the channels stored in the TV’s channel memory. Follow the steps below and on the next page to program all active channels into the TV’s memory. Programming channels automatically Adding and erasing channels manually Your TV can automatically detect all active channels in your...

  • Page 15: 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 : 34HF84 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 16 Location Location Parts No. Description Parts No. Description C663 24212331 CERAMIC DISC, 50V B 330PF K C904 24436471 CERAMIC DISC, 50V SL 470PF J C664 24212331 CERAMIC DISC, 50V B 330PF K C905 24436391 CERAMIC DISC, 50V SL 390PF J C671 24073084 ELECTROLYTIC, 50V 4.7UF M 3A...
  • Page 17 Location Location Parts No. Description Parts No. Description CS50 24092538 CERAMIC CHIP, 10V F 1UF Z R319 24011101 CHIP, METAL FILM, 1/20W 100 OHM J CS51 24092538 CERAMIC CHIP, 10V F 1UF Z R320 24011101 CHIP, METAL FILM, 1/20W 100 OHM J CS54 24092538 CERAMIC CHIP, 10V F 1UF Z...
  • Page 18 Location Location Parts No. Description Parts No. Description R489 24011563 CHIP, METAL FILM, 1/20W 56K OHM J R823 24366102 CARBON FILM, 1/6W 1K OHM J R494 24367224 CARBON FILM, 1/6W 220K OHM G R829 24004942 METAL FILM, 1W 0.1 OHM J R604 24000445 CHIP JUMPER, 1608TYPE...
  • Page 19 Location Location Parts No. Description Parts No. Description R985 24367471 CARBON FILM, 1/6W 470 OHM G RC08 24011102 CHIP, METAL FILM, 1/20W 1K OHM J R986 24367681 CARBON FILM, 1/6W 680 OHM G RC09 24011102 CHIP, METAL FILM, 1/20W 1K OHM J R987 24367681 CARBON FILM, 1/6W 680 OHM G...
  • Page 20 Location Location Parts No. Description Parts No. Description COIL & TRANSFORMERS RV081 24000445 CHIP JUMPER, 1608TYPE RV15 24011101 CHIP, METAL FILM, 1/20W 100 OHM J L101 23289845 COIL, PEAKING, TRF4680AT RV17 24011101 CHIP, METAL FILM, 1/20W 100 OHM J L103 23289844 COIL, PEAKING, TRF4470AT RV21...
  • Page 21 Location Location Parts No. Description Parts No. Description Q910 23114433 TRANSISTOR, 2SC1815-Y T802 23211713 COIL, LINE FILTER, TRF3197AQ Q911 23114433 TRANSISTOR, 2SC1815-Y T840 23217431 TRANSFORMER, CONVERTER, TPW3425AH Q912 23114425 TRANSISTOR, 2SA1015-Y(TE T862 23217665 TRANSFORMER, CONVERTER TPW3548AS Q913 23114425 TRANSISTOR, 2SA1015-Y(TE SEMICONDUCTORS Q914 23114433...
  • Page 22 D662 23118041 DIODE, MA111 MISCELLANEOUS D670 23118041 DIODE, MA111 D671 23118041 DIODE, MA111 B110 23940020 PIECE, BACK TERMINAL BOARD 34H 34HF84 D674 23118041 DIODE, MA111 B112 23940059 PIECE, COVER(BTB) 34HF84 D675 23118041 DIODE, MA111 B251 23845859 HOLDER, WIRE, PVC-C0AT, L=70MM...
  • Page 23 CONNECTOR, PLUG 8P, 2.5MM G JST-EH B8B-EH-F1-TV4 A303 23929741 PIECE, HOLDER BUTTON 32D3000 P903A 23367069 CONNECTOR, PLUG, NP 2.5MM G JST-EH, B9B-EH-F1A A401 23532912 COVER, BACK COVER ASSY 34HF84 P903B 23367069 CONNECTOR, PLUG, NP 2.5MM G JST-EH, B9B-EH-F1A A902 23428287 DOOR, 34HF84 P910 23164725...

  • Page 24: Pc Boards Bottom View

    POWER/DEF BOARD PD1706A (U002) BOTTOM (FOIL) SIDE D801A R379 L806 Q801A G380 P498 CAUTION C396 23547566 R835 LIVE AREA R814 R820 D809 T400 R861 D815 C829 D801 R829 Z301 G406 R828 R808 Q801 C901 C805 L404 R810 F802 125V 5A G403 C498 C461...
  • Page 25 CONT BOARD PD1709-1 (UA01) BOTTOM (FOIL) SIDE VIDEO VOL DN VOL UP CH DN CH UP MENU SA06 SA07 SA04 SA03 SA02 SA01 CV101 RV100 PV02 RA77 RA71 RA72 RA73 RV102 CV100 SA05 RV103 PP02 POWER PP01 LV100 QJ02A RJ05 PJ01B CJ03 QJ02...
  • Page 26 AV TERMINAL BOARD PD1708A (U005) BOTTOM (FOIL) SIDE P602 P603 C110 C601 R610 BB04A BB03A BB06A BB05A R603 RS09 RS23 R603 RS05 RS07 C678 RS03 CS03 RS23 RS01 Q601 GRS03 RS07 C836 RS05 CS11 R602 GRS03 Q601 RS03 CS01 QS102 R604 C606 QS102...
  • Page 27 AV TERMINAL BOARD PD1708A (U005) TOP (COMPONENT) SIDE C110 JP027 P602 P603 BB04A BB03A BB05A BB06A C601 JP036 C602 C682 JP032 C836 C678 CS01 Q833A R672 D601 PV14 C661 C662 CS02 LV55 GND_AUDIO LV60 GND_AUDIO C603 27V_AUDIO 3 4 5 6 7 BB09A R607 C8347...
  • Page 28 LED BOARD PD1709-2 (UA02) CRT-D/SVM BOARD PD1707A (U004) BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE 23547567 Q904 TCI-A7S D R919 Q907 DB31 CB01 D905 RB13 23547569 L910 R939 R981 TCI-A7S D R983 Q921 DB37 DB05 DB36 R985 DB03 DB01 KB01 DB01A PB01B DB03A R984...

  • Page 29: Terminal View Of Transistors

    TERMINAL VIEW OF TRANSISTORS 2SD2253 2SC3852 2SC752GTM 2SC752 2SA1788 (old) 2SD1763A 2SA562TM 2SC2482 2SC5243 2SC1569 2SC2655 2SA1015 2SC4544 2SC1815 2SC4721P 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 ON4409 2SD1554 RN2203 RN2201 2SD2253 2SD1556 RN2004 RN1203 2SC5143 RN1204 2SC5570 RN2204 2SD2553 RN1205 RN1202 RN1201...

  • Page 30: Schematic Diagram

    SCHEMATIC DIAGRAM MODEL : 34HF84 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 31 SCHEMATIC DIAGRAM STRUCTURE: ..........................1/52 (1/3) [SHEET-1/3] ....2/52 (2/3) [SHEET-2/3] ....3/52 (3/3) [SHEET-3/3] ....4/52 MICON (1/8) [SHEET-1/8] ....5/52 (2/8) [SHEET-2/8] ....6/52 (3/8) [SHEET-3/8] ....7/52 (4/8) [SHEET-4/8] ....8/52 (5/8) [SHEET-5/8] ....9/52 (6/8) [SHEET-6/8] ....10/52 (7/8) [SHEET-7/8] ....11/52 (8/8) [SHEET-8/8] ....12/52 G-Hyper (1/3) [SHEET-1/3] ....13/52 (2/3)
  • Page 32 - 37 -...

  • Page 33: Circuit Block Diagram

    CIRCUIT BLOCK DIAGRAM (POWER SUPPLY) T862 133V Deviation Circuit (D801) (SR81) Q801 Audio Circuit 26.5V STR-F6629B Degauss Relay Q832 Signal Processing Circuit 9VRegulator Q831 Signal Processing Circuit 5V-2Regulator Q838 (HDMI) 3.3V2Regulator Q833 Signal Processing Circuit 5V-3Regulator Q834 Signal Processing Circuit 5V-4Regulator (D811~814) T840...

  • Page 34: Specifications

    Specifications • Design and specifications are subject to change without notice. Television System Video/Audio Terminals (cont.) NTSC standard HDMI INPUT: HDMI 1.1 (type A) compliant HDCP 1.1 compliant Channel Coverage E-EDID* 1.3 compliant VHF: 2 through 13 UHF: 14 through 69 Supports DVI-D uncompressed, high-speed, digital Cable TV: Mid band (A-8 through A-1, A through I) single-link input...
  • Page 35 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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