Download  Print this page

Toshiba 46H84 Service Manual

Hide thumbs

Advertisement

SERVICE MANUAL
Color Television
FILE NO. 020-200404
N4PSP Chassis
46H84
51H84
57H84
Published in Japan, May. 2004 (YC)

Advertisement

loading

  Related Manuals for Toshiba 46H84

  Summary of Contents for Toshiba 46H84

  • Page 1 FILE NO. 020-200404 SERVICE MANUAL Color Television N4PSP Chassis 46H84 51H84 57H84 Published in Japan, May. 2004 (YC)
  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS .............................. 3 CRT ASSEMBLY REPLACEMENT AND MOUNTING ....................4 PICTURE TUBE COMPONENTS ADJUSTMENT ......................6 REPLACEMENT OF THE CRT ............................9 SERVICE MODE ................................10 ELECTRICAL ADJUSTMENT ............................12 CONVERGENCE ADJUSTMENT ..........................16 SCREEN AND MIRROR ALIGNMENTS ........................
  • 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: Crt Assembly Replacement And Mounting

    CRT ASSEMBLY REPLACEMENT AND MOUNTING CAUTION : DO NOT LOOSEN THE HEX HEAD BOLTS WITH SPRINGS (12 PCS), BECAUSE THOSE ARE FOR SEALING OF CRT COOLANT. Attention Serviceman The Hex Head Bolts with Springs. (see sketch) used on CRT assembly, are NOT Adjustment Screws DO NOT LOOSEN-FLUID...
  • Page 5: Servicing Precautions

    TO REMOVE CRT (Same procedure for R, G, B) 1. Remove CRT DRIVE Board, S. V. M. COIL and DEF. YOKE from CRT. 2. Remove Lens Assembly. 3. Detach CRT Anode Cap from CRT. 4. Remove CRT Assembly from CRT Mounting. Anode Cap CRT REPLACEMENT (Same procedure for R, G, B) Reverse the removal procedures except the followings.
  • Page 6: Picture Tube Components Adjustment

    WARNING : BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRE- CAUTION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL. PICTURE TUBE COMPONENTS ADJUSTMENT DESCRIPTION OF NECK COMPONENTS Deflection yoke and convergence yoke The position on the neck is required most front (CRT funnel side) and the screw is fastened after rotating yoke adjusting picture tilt.
  • Page 7 R, G, B FOCUS ADJUSTMENT TILT ADJUSTMENT 1. Before adjusting the R, G, B FOCUS, remove the 4 screws Rotate R, G, B deflection yoke so that picture becomes hori- of Lens Assembly which is fixed on the CRT Assembly. zon, then fasten screw.
  • Page 8 LOCATION OF SCREEN AND FOCUS VR’S FOCUS VR SCREEN VR COVER Speaker grille - 8 -...
  • Page 9: Replacement Of The Crt

    REPLACEMENT OF THE CRT Service parts are provided for each R, G and B. The contents of the parts are as follows. 46H84/57H84 HOKUTO 2334118 2334119 2334120 51H84 HITACHI 2334122 2334123 2334124 REPLACEMENT OF HIGH VOLTAGE CABLE 1. When replacing Anode Lead or Anode Cap with new one,...
  • Page 10: Service Mode

    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. DISPLAYING THE ADJUSTMENT MENU 1) Press MENU button on TV.
  • Page 11 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 21) 5.
  • Page 12: Electrical Adjustment

    ELECTRICAL ADJUSTMENTA - 12 -...
  • Page 13 - 13 -...
  • Page 14 - 14 -...
  • Page 15 - 15 -...
  • Page 16: Convergence Adjustment

    CONVERGENCE ADJUSTMENT EXPLANATION OF KEY-FUNCTION IN THE CONVER- 1. Receive NTSC signal. GENCE ADJUSTMENT MODE 2. Enter to the service mode. (See Page 10.) Load BACK UP DATA: 1 button Up : 2 button RCUT Selet Green color: 3 button Left : 4 button Blinking of cursor ON/OFF:...
  • Page 17 DEFRECTION and CONVERGENCE MEASURING ITEM NAME SETTING INPUT TEST POIN ADJUSTMENT METHOD ADJUSTMENT SPEC IN STRUMENT SIGNAL 0 + - 10 mV CONTRAST :MAX VCEN VERTICAL Retma Between TP-G Digital Volt Adjust the vo ltage betwee n TP-G an d TP-V. BRIGHTNESS:CNT Raster Signal...
  • Page 18 NOTES In many cases, color misconvergence may be corrected by returning HIT and WID data in main deflection side to initial adjusting values. Following cases will surely require readjustment of convergence. CRT REPLACEMENT When CRT is replaced, main deflection readjustment and color matching are required. Perform following procedures.
  • Page 19: Screen And Mirror Alignments

    SCREEN AND MIRROR ALIGNMENTS ASSEMBLING OF FRONT SCREEN MOUNTING OF FRONT SCREEN INSIDE 0 to 1 mm OUT SIDE K503 FRONT PANEL K501 K502 LENTICULAR FRESNAL <INSIDE> SMOOTH LENS FRESNEL LENTICULAR FRONT PANEL BLACK STRIPES <OUTSIDE> BLACK STRIPES SMOOTH BEZEL SPACER FRONT PANEL LENTICULAR...
  • Page 20: Circuit Checks

    CIRCUIT CHECKS HIGH VOLTAGE CHECK FS CIRCUIT CHECK CAUTION: There is no HIGH VOLTAGE ADJUSTMENT on The Fail Safe (FS) circuit check is indispensable for the final this chassis. Checking should be done following check in servicing. Checking should be done following the the steps below.
  • Page 21: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 46", 51", 57" HIGH VOLTAGE AT ZERO BEAM: 31.0 kV MAX HIGH VOLTAGE: 32.5 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATA IN THE SERVICE MODE: Item Name of adjustment Preset Data Item...
  • Page 22: Location Of Controls

    LOCATION OF CONROLS (Representative:57H84) Front FRONT Remote sensor (Behind the screen) Volume x • Channel zy TouchFocus™ L/MONO MENU VOLUME CHANNEL EXIT TV/VIDEO TouchFocus S-VIDEO VIDEO AUDIO POWER MENU EXIT Video 3 Video/audio inputs Power TV/VIDEO (behind the door) indicator ANT OUT ANT-2 IN ANT-1 IN...
  • Page 23: Learning About The Remote Control

    Learning about the remote control The buttons used for operating the TV only are described here. turns the TV on and off POWER POWER RECALL TV / VIDEO displays screen information RECALL INFO sets the TV to turn off at a specific time SLEEP selects video input source TV/VIDEO...
  • Page 24: Adding Channels To The Tv's Memory

    ADDING CHANNELS TO THE TV'S MEMORY When you 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.Channel Adding and erasing channels manually Programming channels automatically Your TV can automatically detect all active channels in your...
  • Page 25: Mechanical Disassembly

    MECHANICAL DISASSEMBLY 1 Speaker Grille Removal 2 Control Panel Removal 3 Front Mask Removal 10 screws A001 A201 A223 A202 K501 K502 K503 4 screws A102 4 Shield Plate, Lens Removal 5 Mirror Removal 6 Back Board Removal 4 screws 4 screws K111 K112...
  • Page 26: 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 : 46H84/51H84/57H84 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 27: Chassis Replacement Parts List

    Location Location Parts No. Description Parts No. Description C607 24073053 ELECTROLYTIC, 25V 100UF M 3A C917 24214101 CERAMIC DISC, 500V B 100PF K C608 24073086 ELECTROLYTIC, 50V 10UF M 3A C921 24211102 CERAMIC DISC, 2KV B 1000PF K C612 24073039 ELECTROLYTIC, 16V 220UF M 3A C922 24794101...
  • Page 28 Location Location Parts No. Description Parts No. Description RESISTORS R372 24011332 CHIP, METAL FILM, 1/20W 3.3K OHM J R101 24382223 OXIDE METAL FILM, 1W 22K OHM J R373 24011823 CHIP, METAL FILM, 1/20W 82K OHM J R150 24011332 CHIP, METAL FILM, 1/20W 3.3K OHM J R374 24011104 CHIP, METAL FILM, 1/20W 100K OHM J...
  • Page 29 Location Location Parts No. Description Parts No. Description R482 24011103 CHIP, METAL FILM, 1/20W 10K OHM J R849 24011101 CHIP, METAL FILM, 1/20W 100 OHM J R483 24000445 CHIP JUMPER, 1608TYPE R854 24381150 OXIDE METAL FILM, 1/2W 15 OHM J R485 24011681 CHIP, METAL FILM, 1/20W 680 OHM J...
  • Page 30 Location Location Parts No. Description Parts No. Description R4431 24366102 CARBON FILM, 1/6W 1K OHM J R7735 24383221 OXIDE METAL FILM, 2W 220 OHM J R7102 24872681 CHIP, 1/16W 680 OHM J R7736 24339189 METAL FILM 2W 1R8 J R7103 24872102 CHIP, 1/16W 1K OHM J R7743...
  • Page 31 Location Location Parts No. Description Parts No. Description RB05 24366102 CARBON FILM, 1/6W 1K OHM J L913 23289159 COIL, PEAKING, TRF41R5AF RB15 24366471 CARBON FILM, 1/6W 470 OHM J L915 23289689 COIL, PEAKING, TRF46R8AF RB19 24366470 CARBON FILM, 1/6W 47 OHM J L916 23289120 COIL, PEAKING, TRF4120AF...
  • Page 32 Location Location Parts No. Description Parts No. Description Q682 23205204 TRANSISTOR, NPN VEBO=25V KTC2875B-RTK D336 23316571 DIODE, ZENER, MA8056-M Q711 23205269 TRANSISTOR, VCBO-160V IC-1.5A 2SA2005 D337 23316571 DIODE, ZENER, MA8056-M Q712 23205270 TRANSISTOR, VCBO 160V 1.5A 2SC5511 D365 23316581 DIODE, ZENER 7.51-7.89 MA8075-H, TX Q751 23135048 IC, CONVERGENCE OUT STK394-250A...
  • Page 33 Location Location Parts No. Description Parts No. Description D880 23316663 DIODE, ZENER, MTZJ4.3B BB200 23368627 CONNECTOR, BRIDGE B-B 8P 2.5JST 08TM-2.5FJ-E D881 23316231 DIODE, 1SS355 BB21 23903022 CONNECTOR, BASE B-B 8P 2.5 JST D883 23357018 DIODE, RL2 BB60 23713014 CONNECTOR, BRIDGE PLUG 16P 1.5 D884 23357018 DIODE, RL2...
  • Page 34 COVER, BEZEL ASSEY 57H84 E021Z 23761995 PC BOARD ASSY, BACK/AV 51H84 PU PD1735A1 A202 #1 23450682 PANEL, CONTROL PANEL ASSEMBLY #1 23762482 PC BOARD ASSY, BACK/AV 46H84 PU PD1876A1 23450649 PANEL, CONTROL ASSY E022Z 23761996 PC BOARD ASSY, FRONT-CON 51H84 PU PD1735A2 A213...
  • Page 35 Location Parts No. Description K601 #1 23405273 MIRROR, 46W MIRROR46L #2 23405249 MIRROR, 51WL #3 23405409 MIRROR, 57WL MIRROR57WL - 36 -...
  • Page 36 DEFPOWER BOARD PD1730A (U411 ) BOTTOM (FOIL) SIDE D881 CCP-3400S R883 R864 R868 10 9 8 7 5 4 3 2 R874 C316 R873 C854 D885A Q862 D864 C862 TP-G Q881 R371 R475 D327 GR31 TP-V R865 L888 R372 D334 L896 D854 R374...
  • Page 37: Pc Boards Bottom View

    CONV/ IF/AUDIO BOARD PD1731A (U701) BOTTOM (FOIL) SIDE R153 GJ151 GJ150 Q681 C601 R603 P105 Q153 R601 GJ104 GJ106 GJ103 R604 C109 GJ105 R150 R150 C607 R151 C606 C605 C662 C663 R151 C101 C602 R152 R673 H001 R154 R684 D605 Q682 R155 GJ170...
  • Page 38 CRT/SVM BOARD PD1733A (UA11) CRT/SVM BOARD PD1733A (UA12) BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE CRT-D/G Q902 D941 Q912 CCP-3400S CRT-D/R D943 R7009 R7109 Q7103 R7007 Q7003 R963 R7101 Q961 R7107 R7001 R7009 R7109 L907 CCP-3400S L917 C933 C943 Q7101 C7006 C7003 Q961 Q7002...
  • Page 39 BACK/AV BOARD PD1735A1 (UV11:51H84/57H84) FRONT-CON BOARD PD1735A2 (UV12:51H84/57H84) BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE QB513 QB510 QB511 23547592 PB503 PS01 23547592 CB505 B1-V-0 QB508 DB504 LV36 B1-V-0 RB05 PB11 RV36 RB01 CV39 RA78 DB501 RA71 RA72 RA73 RV35 MENU VOL DN VOL UP CH DN CH UP...
  • Page 40 CH DN CH UP EXIT ANT/VIDEO FOCUS DB01 RV189 TOUCH SA05 SA06 SA04 SA02 SA01 SA09 SA07 SA08 AV/FRONT IN BOARD PD1876A3 (UV13:46H84) BOTTOM (FOIL) SIDE PV05 S701 RV20 RV86 CV127 RV89 RV85 RV23 PV60 P701 RV21 B1-V-0 9 10 LV13...
  • Page 41: Terminal View Of Transistors

    TERMINAL VIEW OF TRANSISTORS 2SC5144 2SC3852 2SC752 2SA1788 2SC752GTM 2SC5859 2SD1763A 2SC2482 2SA562TM 2SC1569 2SC2655 2SA1015 2SC4544 2SC1815 2SC4721P 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 RN2203 2SD1554 ON4409 RN2201 2SD2253 RN2004 2SD1556 RN1203 2SD2553 RN1204 2SC5143 RN2204 RN1205 RN1202 RN1201 - 47 -...
  • Page 42: Schematic Diagram

    SCHEMATIC DIAGRAM MODEL : 46H84/51H84/57H84 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 43 (2/3) [ SHEET - 2/3] ..... 2/61 (3/3) [ SHEET - 3/3] ..... 3/61 BACK/AV (51H84, 57H84) Circuit ................4/61 BACK/AV (46H84) Circuit ..................... 5/61 CONV/IF/AUDIO (1/3) [ SHEET - 1/3] ..... 6/61 (2/3) [ SHEET - 2/3] ..... 7/61 (3/3) [ SHEET - 3/3] .....
  • Page 44: Circuit Block Diagram

    CIRCUIT BLOCK DIAGRAM - 50 - - 51 -...
  • Page 45: Specifications

    15 W + 15 W Supplied Accessories Remote Control with 2 size “AA” alkaline batteries Speaker Type 46H84: Two 4-3/4 inches (12 cm) round Optional TV Stand 51H84: Two 6-5/16 inches (16 cm) round 46H84: ST4663 57H84: Two 6-5/16 inches (16 cm) round...
  • Page 46 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

This manual is also suitable for:

51h8457h84