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Toshiba 34HFX84 Service Manual

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FILE NO. 020-200414

SERVICE MANUAL

Color Television
34HFX84
DOCUMENT CREATED IN JAPAN, July, 2004

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  Summary of Contents for Toshiba 34HFX84

  • Page 1: Service Manual

    FILE NO. 020-200414 SERVICE MANUAL Color Television 34HFX84 DOCUMENT CREATED IN JAPAN, July, 2004...
  • Page 2: Table Of Contents

    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 & ADJUSTING DATA ..........................11 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 For Flat Tube

    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 Power indicator MENU Front L/MONO MENU TV/VIDEO VOLUME CHANNEL POWER S-VIDEO VIDEO AUDIO VIDEO-3 IN Video 3 Channel TV/VIDEO MENU Video/audio inputs (behind the door) POWER Volume TV Rear ANT OUT ANT-1 IN ANT-2 IN HDMI IN Back...
  • Page 13: Remote Control

    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

    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

    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 To power supply block Check the Q670 recheck Pin11 13.25V/Pin12 13.25V Check the existence of the input waveform...
  • 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 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 ELECTROLYTIC CE04P 50V 3.3UF M 3A C893...
  • Page 18 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 CV16 24794220 ELECTROLYTIC, 16V 22UF M...
  • Page 19 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 R470 24339518 OXIDE METAL FILM, 2W 0.51 OHM J...
  • Page 20 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 24366222 CARBON FILM, 1/6W 2.2K OHM J...
  • Page 21 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 RS68 24011101 CHIP, METAL FILM, 1/20W 100 OHM J...
  • Page 22 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 23009967 IC, +5.0V 2% REG.
  • Page 23 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 D901 23118859 DIODE, 1SS133 D330...
  • 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

    SCAN CONVERTER MODUL (UV02) BOTTOM (FOIL) SIDE - 25 - - 26 -...
  • Page 26 SCAN CONVERTER MODUL (UV02) TOP (COMPONENT) SIDE - 27 - - 28 -...
  • Page 27 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 C805 L404 R810 F802 125V 5A G403 C498 C461...
  • Page 28 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 29 AV TERMINAL BOARD PD1708B (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 30 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 27V_AUDIO 3 4 5 6 7 BB09A R607 C8347...
  • Page 31 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 Q908 DB03 R915 DB01 C918 KB01 DB01A...
  • Page 32: 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 33: Schematic Diagram

    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 " " 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 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] ....11/53 (8/8) [SHEET-8/8] ....12/53 G-Hyper (1/3) [SHEET-1/3]...
  • Page 35 - 42 -...
  • Page 36: 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 37: Specifications

    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 HDMI INPUT: HDMI 1, HDMI 2 compliant (type A connector)
  • Page 38 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...