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Toshiba 51HC85 Service Manual
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Toshiba 51HC85 Service Manual

Projection monitor
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SERVICE MANUAL

Projection Monitor
TOSHIBA CORPORATION 2005
FILE NO. 020-200507
51HC85
57HC85
65HC15
65HC85
Published in Japan Jun. 2005 (YC)
DOCUMENT CREATED IN JAPAN, June, 2005

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Summary of Contents for Toshiba 51HC85

  • Page 1: Service Manual

    FILE NO. 020-200507 SERVICE MANUAL Projection Monitor 51HC85 57HC85 65HC15 65HC85 TOSHIBA CORPORATION 2005 Published in Japan Jun. 2005 (YC) DOCUMENT CREATED IN JAPAN, June, 2005...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 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 ..........................15 SCREEN AND MIRROR ALIGNMENTS ........................18 CIRCUIT CHECKS ...............................

  • Page 3: Safety Instructions

    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 SCREEN FOCUS 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. 51HC85 23078357 23078358 23078359 57HC85 23447326 23447324 23447327 65HC85 23447328 23447324 23447329 65HC15 23447981 23447982 23447983 REPLACEMENT OF HIGH VOLTAGE CABLE 1.

  • 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, 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 11 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of 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 20) 5.

  • Page 12: Electrical Adjustment

    ELECTRICAL ADJUSTMENT - 12 -...
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  • Page 14 - 14 -...

  • Page 15: 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 : button RCUT Selet Green color: button Left : button Blinking of cursor ON/OFF: 5 button...
  • Page 16 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 voltage between TP-G and TP-V. BRIGHTNESS:CNT Raster Signal Meter to TP-V...
  • Page 17 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 18: 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 19: 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 20: Setting & Adjusting Data

    SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 51", 57", 65" HIGH VOLTAGE AT ZERO BEAM: 32.8 kV MAX HIGH VOLTAGE: 33.9 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATA IN THE SERVICE MODE: Item Name of adjustment Preset Data Item Name of adjustment Preset Data RCUT...

  • Page 22: 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 : 51HC85/57HC85/65HC15/65HC85 Capacitors ..... CD : Ceramic Disk PF : Plastic Film EL : Electrolytic Resistors ....

  • Page 23: Adding Channels To The Tv's Memory

    Location Parts No. Description Location Parts No. Description C684 76795470 ELECTROLYTIC, 25V 47UF M C7109 76214472 CERAMIC DISC, 500V B 4700PF K C698 76085055 CHEMICON NP 25V 222 25V 2200UF M C7110 76666470 ELECTORLYTIC, 16V 47UF M 3A C699 76085055 CHEMICON NP 25V 222 25V 2200UF M C7111 76666470 ELECTORLYTIC, 16V 47UF M 3A C801...

  • Page 24: Mechanical Disassembly

    Location Parts No. Description Location Parts No. Description R314 76011473 CHIP, 1/20W 47K OHM J R439 76011103 CHIP, 1/20W 10K OHM J R315 76011681 CHIP, 1/20W 680 OHM J R440 76011103 CHIP, 1/20W 10K OHM J R321 76011472 CHIP, 1/20W 4.7K OHM J R441 76533331 FUSIBLE, 2W 330 OHM J R322...
  • Page 25 Location Parts No. Description Location Parts No. Description R697 76553221 OXIDE METAL FILM, 1W 220 OHM J R987 76872101 CHIP, 1/16W 100 OHM J R698 76011103 CHIP, 1/20W 10K OHM J R988 76366222 CARBON FILM, 1/6W 2.2K OHM J R699 76011103 CHIP, 1/20W 10K OHM J R991 76366222 CARBON FILM, 1/6W 2.2K OHM J...

  • Page 26: Chassis Replacement Parts List

    Location Parts No. Description Location Parts No. Description R7747 76011221 CHIP, 1/20W 220 OHM J RB67 24366221 CARBON FILM, 1/6W 220 OHM J R7748 76011221 CHIP, 1/20W 220 OHM J RB69 24366272 CARBON FILM, 1/6W 2.7K OHM J R7749 76011102 CHIP, 1/20W 1K OHM J RB70 24366331 CARBON FILM, 1/6W 330 OHM J R7750...
  • Page 27 Location Parts No. Description Location Parts No. Description L905 23289014 COIL, PEAKING, TRF46R8AF Q785 23085596 IC, PST994D L911 23289996 COIL, PEAKING, TRF4220AF Q794 23085560 IC, TA75S393F(F) L913 23289993 COIL, PEAKING, TRF41R5AF Q795 23085691 IC, TC4066BP(N,F) L915 23289014 COIL, PEAKING, TRF46R8AF Q796 23205347 TRANSISTOR, KTC4075Y/P L916...
  • Page 28 Location Parts No. Description Location Parts No. Description ! D490 23357748 DIODE, ZENER, MA8062-M D944 23357697 DIODE, 1SS133 D491 23357703 DIODE, 1SS355 D945 23357697 DIODE, 1SS133 D492 23357765 DIODE, ZENER, MA8100-M D962 23357748 DIODE, ZENER, MA8062-M D505 23357893 DIODE, ZENER, MTZJ27C D967 23357496 DIODE, 1S1834(Q) D601...
  • Page 29 Location Parts No. Description Location Parts No. Description PB51 23368577 PLUG, 3P 2.5MM G, B3B-EH-F1-TV4 #4 23946211 PACKING, BASE TRAY PB501 23365772 JACK, EARPHONE, HSJ1406-01-020 K912 23306626 REMOCON HAND UNIT IR, MTVUSA CT-90232 PB502 23365772 JACK, EARPHONE, HSJ1406-01-020 K913 23306614 REMOCON HAND UNIT PB503 23713776 PLUG, 3P 2.5MM W, S3B-EH KB01...
  • Page 30 Location Parts No. Description Location Parts No. Description #4 23311010 SCREEN, 65KN FRESNEL SHEET SCREEN65KN-F K503 #1 23311065 SCREEN, PROTECTOR 51KN SCR-PRO51KN #2 23311038 SCREEN, PROTECTOR 57KN SCR-PRO57KN #3 23311962 SCREEN, PROTECTOR 65KM SCR-PRO65KM #4 23311962 SCREEN, PROTECTOR 65KM SCR-PRO65KM K601 #1 23405484 MIRROR, 51WQG 993/720*550 T3 #2 23405409 MIRROR, 57WL MIRROR57WL...
  • Page 33 D848 D841 D895 D842 R893 R818 Q843 R486 Q844 R844 R819 Q473 R472 R489 R469 Q428 R427 R334 C463 R483 R338 R363 R308 R307 Q341 R350 R322 R325 R306 D301 Q409 D365 D492 R415 D490 R493 R494...
  • Page 34 DB56 RB61 RB15 DB54 QB51 RB58 LB51 RB57 RB54 RB55 RB67 RB70 QB53 23547370 D603 D604 C602 R7718 C7730 R698 C601 D612 Q682 Q681 Q612 R614 R616 R611 D616 D611 R613 Q614 D617 Q661 R666 Q768 R677 R7712 R7707 C7721 D613 Q765 C7737...
  • Page 35 C7105 C7114 R7113 R7108 Q7103 R7133 R7129 R7130 R7131 R7103 D962 R965 R9507 R918 R969 R966 C7205 R7216 Q7205 P704 R7215 C7205 C7214 R7213 C7214 Q7204 R7218 C7210 R7213 C7005 R7208 R7208 R7239 Q7203 R7233 C7004 R7236 R7233 R7226 R7013 R7225 R7008 R7223...

  • Page 36: Pc Boards Bottom View

    RA79 RB04 QB01 RA77 RA76 QB512 RB562 RB561 RB506 RB504 RB563 RB505 RB558 QB502 CB504 RV185 CV130 CV129 RB559 PB501 PB502 RV34 RV161 RB567 CV38 RV37 QB509 LV37 RV40 RV33 PV01 R286 R287 R288 PV02 R266 R264 R265 CV29 CV30 QV48 CV27 PV03...

  • Page 37: Terminal View Of Transistors

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

  • Page 38: Schematic Diagram

    SCHEMATIC DIAGRAM MODEL : 51HC85/57HC85/65HC15/65HC85 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 39 SCHEMATIC DIAGRAM STRUCTURE: – SPK CONNECTOR Circuit ......................1/62 – DEF POWER Circuit (1/3) [SHEET - 1/3] ....2/62 – (2/3) [SHEET - 2/3] ....3/62 – (3/3) [SHEET - 3/3] ....4/62 – BACK/AV Circuit ..........................5/62 – CONV/IF/AUDIO (1/3) [SHEET - 1/3] ....

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65hc1565hc8557hc85

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