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Toshiba 34HFX84 Service Manual

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All manuals and user guides at all-guides.com
FILE NO. 020-200414
SERVICE MANUAL
Color Television
34HFX84
DOCUMENT CREATED IN JAPAN, July, 2004

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  • Page 1 All manuals and user guides at all-guides.com FILE NO. 020-200414 SERVICE MANUAL Color Television 34HFX84 DOCUMENT CREATED IN JAPAN, July, 2004...
  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 SET-UP ADJUSTMENT FOR FLAT TUBE ....................... 4 SERVICE MODE ..............................6 ELECTRICAL ADJUSTMENTS ..........................8 CIRCUIT CHECKS ..............................10 CHAPTER 2 SPECIFIC INFORMATIONS SETTING &...
  • Page 3: Chapter 1 General Adjustments

    All manuals and user guides at all-guides.com 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.
  • Page 4: Set-Up Adjustment For Flat Tube

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com (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

    All manuals and user guides at all-guides.com SERVICE MODE 1. ENTERING TO SERVICE MODE 1) Press MUTE button twice 2) Press MUTE button 3) While pressing the MUTE button, press MENU button on TV set. on Remote Control. again to keep pressing. MUTE (Service mode display) 2.
  • Page 7 All manuals and user guides at all-guides.com 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 &...
  • Page 8: Electrical Adjustments

    All manuals and user guides at all-guides.com 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.
  • Page 9 All manuals and user guides at all-guides.com 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.
  • Page 10: Circuit Checks

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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...
  • Page 12: Location Of Controls

    All manuals and user guides at all-guides.com LOCATION OF CONTROLS TV Front Remote sensor Power indicator MENU Front L/MONO MENU TV/VIDEO VOLUME CHANNEL POWER S-VIDEO VIDEO AUDIO VIDEO-3 IN Video 3 Channel MENU TV/VIDEO Video/audio inputs (behind the door) POWER Volume TV Rear ANT OUT...
  • Page 13 All manuals and user guides at all-guides.com Remote Control turns the TV on and off POWER allows access to the automatic TV shut-off function SLEEP The first press of the LIGHT button lights the keypad and turns LIGHT on the Illumination mode. With the Illumination mode on, pressing any other key lights the keypad for 5 seconds (10 seconds if you’re in programming mode).
  • Page 14: Adding Channels To The Tv's Memory

    All manuals and user guides at all-guides.com 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 this 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: Trouble Shooting

    All manuals and user guides at all-guides.com TROUBLE SHOOTING NO SOUND(All source) Check the output of Q670. Check the connection with SPK. Check the existence of the waveform of C682, C681, and C683. Check the voltage of Q670. Pin8 13.25V/Pin9 26.50V Check the Q670 recheck To power supply block Pin11 13.25V/Pin12 13.25V...
  • 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 : 34HFX84 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 17 All manuals and user guides at all-guides.com Location Location Parts No. Description Parts No. Description C660 24073034 ELECTROLYTIC, 16V 10UF M 3A C891 24073161 ELECTROLYTIC CE04P 16V 3900UF M 3A C661 24073083 ELECTROLYTIC CE04P 50V 3.3UF M 3A C892 24073172 ELECTROLYTIC CE04P 25V 1000UF M 3A C662 24073083...
  • Page 18 All manuals and user guides at all-guides.com Location Location Parts No. Description Parts No. Description CV01 24100104 CERAMIC CHIP, 25V F 0.1UF Z R205 24011750 CHIP, METAL FILM, 1/20W 75 OHM J CV15 24092538 CERAMIC CHIP, 10V F 1UF Z R206 24011750 CHIP, METAL FILM, 1/20W 75 OHM J...
  • Page 19 All manuals and user guides at all-guides.com Location Location Parts No. Description Parts No. Description R466 24383220 OXIDE METAL FILM, 2W 22 OHM J R724 24366151 CARBON FILM, 1/6W 150 OHM J R467 24383220 OXIDE METAL FILM, 2W 22 OHM J R725 24366182 CARBON FILM, 1/6W 1.8K OHM J...
  • Page 20 All manuals and user guides at all-guides.com Location Location Parts No. Description Parts No. Description R940 24366560 CARBON FILM, 1/6W 56 OHM J RB11 24366271 CARBON FILM, 1/6W 270 OHM J R942 24366222 CARBON FILM, 1/6W 2.2K OHM J RB12 24366103 CARBON FILM, 1/6W 10K OHM J R943...
  • Page 21 All manuals and user guides at all-guides.com Location Location Parts No. Description Parts No. Description RS66 24011100 CHIP, METAL FILM, 1/20W 10 OHM J RV551 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RS67 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RV553 24011222 CHIP, METAL FILM, 1/20W 2.2K OHM J...
  • Page 22 All manuals and user guides at all-guides.com Location Location Parts No. Description Parts No. Description L8311 23248247 COIL, CHOKE, TLN3499AH Q831 23009546 IC, REGULATOR +5V 3% NJM2396F05D L8312 23248247 COIL, CHOKE, TLN3499AH Q832 23009549 IC, REGULATOR +9V 3% NJM2396F09D LJ901 23200448 COIL, GEOMAGNETIC CORRECTION TSB-2408AG Q833...
  • Page 23 All manuals and user guides at all-guides.com Location Location Parts No. Description Parts No. Description D303 23357366 DIODE, FR105-B5 D891 23316768 DIODE, FMB-26L D318 23118859 DIODE, 1SS133 D892 23357042 DIODE, FMX-12S(023-108) D321 23316753 DIODE, ZENER, MTZJ33A D899 24019485 VARISTOR, TNR10V431K D327 23118515 DIODE, ZENER, RD11ESA B1...
  • Page 24 LEAD CLAMPER A303 23929741 PIECE, HOLDER BUTTON 32D3000 PB01A 23368580 CONNECTOR, PLUG 6P, 2.5MM G JST-EH B6B-EH-F1-TV4 A401 23532913 COVER, BACK COVER ASSY 34HFX84 PJ01A 23368579 CONNECTOR, PLUG 5P, 2.5MM G JST-EH, B5B-EH-F1-TV4 A902 23428287 DOOR, DOOR PJ01B 23368579 CONNECTOR, PLUG 5P, 2.5MM G JST-EH, B5B-EH-F1-TV4...
  • Page 25: Pc Boards Top And Bottom View

    All manuals and user guides at all-guides.com SCAN CONVERTER MODUL (UV02) BOTTOM (FOIL) SIDE - 25 - - 26 -...
  • Page 26 All manuals and user guides at all-guides.com SCAN CONVERTER MODUL (UV02) TOP (COMPONENT) SIDE - 27 - - 28 -...
  • Page 27 All manuals and user guides at all-guides.com POWER/DEF BOARD PD1706B (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 L404 C805...
  • Page 28 All manuals and user guides at all-guides.com CONT BOARD PD1709-1 (UA01) BOTTOM (FOIL) SIDE VIDEO VOL DN VOL UP CH DN CH UP MENU SA06 SA07 SA02 SA01 SA04 SA03 CV101 RV100 PV02 RA71 RA72 RA77 RA73 CV100 RV102 SA05 RV103 PP02 POWER...
  • Page 29 All manuals and user guides at all-guides.com AV TERMINAL BOARD PD1708B (U005) BOTTOM (FOIL) SIDE P602 P603 C110 C601 R610 BB04A BB03A BB06A BB05A R603 R603 RS09 RS23 RS05 RS07 C678 RS03 CS03 RS01 RS23 GRS03 Q601 RS07 C836 RS05 CS11 R602 GRS03...
  • Page 30 All manuals and user guides at all-guides.com AV TERMINAL BOARD PD1708B (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...
  • Page 31 All manuals and user guides at all-guides.com LED BOARD PD1709-2 (UA02) CRT-D/SVM BOARD PD1816A (U004) BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE DB31 CB01 RB13 23547569 23547645 TCI-A7S D TCI-A7S D R933 R9180 C963 R905 C912 DB37 C903 DB05 R979 R918 D902 R9930 DB36...
  • Page 32: Terminal View Of Transistors

    All manuals and user guides at all-guides.com 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 ON4409 RN2203 2SD1554 RN2201 2SD2253 RN2004 2SD1556 RN1203 2SC5143...
  • Page 33 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM MODEL : 34HFX84 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 "...
  • Page 34 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM STRUCTURE: HYPER SIGNAL ........................1/53 (1/3) [SHEET-1/3] ....2/53 (2/3) [SHEET-2/3] ....3/53 (3/3) [SHEET-3/3] ....4/53 MICON (1/8) [SHEET-1/8] ....5/53 (2/8) [SHEET-2/8] ....6/53 (3/8) [SHEET-3/8] ....7/53 (4/8) [SHEET-4/8] ....8/53 (5/8) [SHEET-5/8] ....9/53 (6/8) [SHEET-6/8] ....10/53 (7/8) [SHEET-7/8]...
  • Page 35 All manuals and user guides at all-guides.com - 42 -...
  • Page 36: Circuit Block Diagram

    All manuals and user guides at all-guides.com CIRCUIT BLOCK DIAGRAM (POWER SUPPLY) T862 Deviation Circuit 133V (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...
  • Page 37: Specifications

    All manuals and user guides at all-guides.com Specifications • Note: This model complies with the specifications listed below. Designs and specifications are subject to change without notice. This model may not be compatible with features and/or specifications that may be added in the future. Television System Video/Audio Terminals (cont.) NTSC standard...
  • Page 38 All manuals and user guides at all-guides.com TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...