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Toshiba 40WH08G Service Manual

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FILE NO. 030-200004
SERVICE MANUAL

COLOUR TELEVISION

C00P Chassis
40WH08G , 40WH08B
PRINTED IN JAPAN Jun., 1999 T

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  Summary of Contents for Toshiba 40WH08G

  • Page 1: Colour Television

    FILE NO. 030-200004 SERVICE MANUAL COLOUR TELEVISION C00P Chassis 40WH08G , 40WH08B PRINTED IN JAPAN Jun., 1999 T...
  • 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 SERVICE POSITION ..............................9 SERVICE MODE ..............................10 DESIGN MODE ..............................13 ELECTRICAL ADJUSTMENT ..........................14 CONVERGENCE ADJUSTMENT ..........................
  • 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 hazard- 2. The only source of X-RAY RADIATION in this TV receiver ous 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”...
  • 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 ADJUSTING PROCEDURE IN REPLACING CRT RGB FOCUS ADJUSTMENT 1. Call-up the adjustment mode (see page 10) User convergence center check Cutoff 2.
  • Page 7 Note: The aim of the above-described adjustment procedure Note: Keep in mind that only the BLUE electric focus is ad- for the Green lens focus is to obtain the best lens focus justed with the black cross-hatch. after 2 - 3 hours of warming up taking into account the focus drift;...
  • Page 8 LOCATION OF SCREEN AND FOCUS VR'S To remove the Speaker grille and Front panel. SCREEN VR FOCUS VR Front panel Speaker grille REPLACEMENT OF HIGH VOLTAGE CABLE 1. When replacing Anode Lead or Anode Cap with new one, remove Lead Holder from old lead as shown in ANODE LEAD figure below, and put it on new lead.
  • Page 9: Service Position

    WARNING : BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAU- TION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF THIS MANUAL. SERVICE POSITION In order to assure the performance, processed wires shall be replaced after the repair work. Work procedures are as follows: Remove the back board.
  • Page 10: Service Mode

    SERVICE MODE 1. ENTERING TO SERVICE MODE 1) Press o button once on 2) Press o button again to 3) While pressing the o button, Remote Control. keep pressing. press MENU button on TV set. Item Data or Sound Mute (Service mode display) 2.
  • Page 11 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2. (t button for reverse order) Refer to table-2 for preset data of adjustment mode. (See SETTING & ADJUSTING DATA on page 33) 5.
  • Page 12 SELF DIAGNOSTIC FUCTION for some model. 3) Press "9" button on Remote Control during display of selfcheck display as above, the selfcheck screen for EPG/TEXT unit as shown below is displayed. (This function is only 40WH08G (EPG model). SELFCHECK...
  • Page 13: Design Mode

    DESIGN MODE 1. ENTERING TO DESIGN MODE 1) Select the Service mode. 2) While pressing CALL button on Remote 3) Press MENU button on TV. and press MENU button on TV. ITEM Press DATA Press (Design mode) (Adjustment mode) When QA02 is initialized, items “OPT0” and “OPT1” of DESIGN MODE are set to the data of the representative model of this chassis family.
  • Page 14: Electrical Adjustment

    ELECTRICAL ADJUSTMENT ITEM ADJUSTMENT PROCEDURE 1. Select picture size WIDE mode. WIDTH 2. Call up the adjustment mode display, and press the TV/VIDEO (WID) button on the remote untill the white cross dot pattern appears on the screen. 3. Press the CHANNEL s or t button to select the item WID and press the VOLUME s or t button to get the pictuer so the left and right edges of rester begin to lack.
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  • Page 22: Convergence Adjustment

    CONVERGENCE ADJUSTMENT 1. Screen Adjustment The four PAL screens Wide/4:3, Super Live, Cinema and Subtitle, and the four NTSC screens Wide/4:3, Super Live, Cinema and Subtitle are adjusted. When adjusting, input an external signal for matching the sync. CAUTION: The convergence circuit eliminates screen distortion but cannot make large corrections such as changing the overall screen size.
  • Page 23 1-2. Remote Contr o l Key o key ....Push this key twice and the set con- SIZE sole menu key to enter the service mode . F key ....Push this key and 7 key to enter CALL TEXT the con vergence menu.
  • Page 24 1-3. Adjusting Screen 1) Adjusting menu Description Item Adjust PAL Wide Used for manual adjustment of the Wide/4:3 screen in the PAL mode. Returns to the original screen data screen before data conversion, explained below. PAL Wide to others Automatically saves approximate supplementary data for the other PAL screens based on the PAL Wide/4:3 screen data.
  • Page 25 Item Description Adjust NTSC S.Live Used for manual adjustment of the NTSC Super Live screen. Select this mode for Super Live screen color matching and distortion adjustment. Use the specified dimensions when adjusting. Adjust NTSC Cinema Used for manual adjustment of the NTSC Cinema screen. Select this mode for Cinema screen color matching and distortion adjustment.
  • Page 26 2. Case Study In many cases, color matching problems can be solved by returning the HIT and WID data for main deflection to the initial adjustment values. Convergence cannot be re-adjusted in the following cases. 2-1 When the CRT has been replaced Main deflection re-adjustment and color matching are necessary when the CRT has been replaced.
  • Page 27 3 Screen adjustment dimensions 3-1 WIDE/4:3 (PAL mode) 207.5 124.5 41.5 (screen center) 41.5 124.5 207.5 3-2 Super Wide (PAL mode) 249.0 220.0 130.5 (pattern center) 49.5 136.5 221.0 249.0 Caution: Do not perform the VLIN adjustment. – 27 –...
  • Page 28 3-3 Cinema (PAL mode) Note: The cursor will move outside the screen limits in the Cinema mode; therefore, be careful to consider the position of the cursor displayed on the screen when making adjustments. 262.5 227.5 157.5 52.5 52.5 157.5 227.5 262.5 3-4 Subtitle (PAL mode)
  • Page 29 3-5 WIDE/4:3 (NTSC mode) (screen center) 3-6 Super Live (NTSC mode) (pattern center) Caution: Do not perform the VLIN adjustment. – 29 –...
  • Page 30 3-7 Cinema (NTSC mode) Note: The cursor will move outside the screen limits in the Cinema mode; therefore, be careful to consider the position of the cursor displayed on the screen when making adjustments. Note: Please be aware that the Cinema screen convergence pattern center is located at the center of the screen but the image center is located approximately 13mm above that.
  • Page 31: Screen And Mirror Alignments

    SCREEN AND MIRROR ALIGNMENTS ASSEMBLING AND MOUNTING OF FRONT SCREEN * Please refer to MECHANICAL DISASSEMBLY page 37. CLEANING OF LENS AND MIRROR CAUTION : Do not hold the optical system parts (lens and mirror) with bare hand to avoid finger-prints on the surface of those parts.
  • Page 32: Circuit Checks

    CIRCUIT CHECKS HIGH VOLTAGE CHECK CAUTION: There is no HIGH VOLTAGE ADJUSTMENT on this chassis. Checking should be done following the steps below. 1. Connect an accurate high voltage meter to the anode of the picture tube. 2. Turn on the receiver. Set the BRIGHTNESS and CONTRAST to minimum (zero beam current). 3.
  • Page 33: Chapter 2 Specific Informations

    SuperLive Cinema Substitle 14:9 VLIN Table-2-1 DESIGN MODE ADJUSTING ITEMS AND D ATAS IN THE DESIGN MODE: Preset Data of Preset Data of Item Name of adjustment Remarks 40WH08G 40WH08B OPT1 OPTION 1 OPT0 OPTION 0 Table-3 – 33 –...
  • Page 34: Location Of Controls

    LOCATION OF CONTROLS Front MAIN SWITCH HEAD PHONE (VIDEO-3) S-VIDEO TERMINAL POWER (RED) VIDEO-3 ON TIMER (GREEN) BILINGUAL (ORANGE) MENU STEREO (GREEN) VOLUME DOWN EXIT VOLUME UP POSITION UP POSITION DOWN Back DIGITAL AUDIO INPUT (COAXIAL) DIGITAL AUDIO INPUT (OPTICAL) EXTERNAL SPEAKER SWITCH EXTERNAL SPEAKER...
  • Page 35 ENTER ENTER MENU EXIT MENU Buttons EXIT • Stereo/Bilingual • Sound Mute V T R / D VD Volume Video Recoder/DVD Buttons to operate your Toshiba Video Recorder & DVD V T R / D V D – 35 –...
  • Page 36: Circuit Block Diagram

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  • Page 37: Mechanical Disassembly

    MECHANICAL DISASSEMBLY K502 16 SCREWS A262 A264 K601 K501 LABELS A262 10 SCREWS SCREWS 8 SCREWS A420 A424 8 SCREWS A201 A213 (A214) (A223) A101 A202 A268 A103 A102 6 SCREWS K101 K102 K103 – 37 –...
  • Page 38: Chassis And Cabinet Replacement Parts List

    : Metal Film OMF : Oxide Metal Film : Variable Resistor : Fusible Resistor (All CD and PF capacitors are ±5%, 50V and all resistors, ±5%, 1/6W unless otherwise noted.) Models :40WH08G, 40WH08B Location Location Part No. Description Part No.
  • Page 39 Location Location Part No. Description Part No. Description PF, 4700pF, ±3%, 1800V EL, 10?F, ±20%, 50V C426 24082608 C612 24669100 EL, 10?F, ±20%, 50V C430 24232103 CD, 0.01?F, +80%, -20% C613 24669100 EL, 100?F, ±20%, 16V EL, 1000?F, ±20%, 50V C431 24763101 C614...
  • Page 40 Location Location Part No. Description Part No. Description EL, 4.7?F, ±20%, 50V EL, 47?F, ±20%, 16V C683 24669479 C833 24666470 EL, 10?F, ±20%, 50V C685 24591102 PF, 1000pF C834 24669100 C704 24232103 CD, 0.01?F, +80%, -20% (40WH08B) EL, 4.7?F, ±20%, 50V EL, 47?F, ±20%, 16V C705 24206479...
  • Page 41 24436150 CD, 15pF C8390 24092553 C7713 24436150 CD, 15pF (40WH08G) C7714 24436150 CD, 15pF C8400 24503001 PF, 0.1?F (40WH08G) CD, 1000pF, ±20%, AC250V C7715 24436150 CD, 15pF C8430 24092555 C7716 24436150 CD, 15pF (40WH08G) EL, 47?F, ±20%, 400V C7717 24436150...
  • Page 42 Chip, 0.1?F, +80%, -20%, 25V Chip, 2200pF, ±10% CD87 24109222 (40WH08G) EL, 10?F, ±20%, 16V CD88 24794100 CF26 24774330 Chip, 33pF, CH(40WH08G) EL, 10?F, ±20%, 16V CD89 24100104 Chip, 0.1?F, +80%, -20%, 25V CF31 24203100 CF02 24774220 Chip, 22pF, CH(40WH08G)
  • Page 43 Location Location Part No. Description Part No. Description CH121 24100104 Chip, 0.1?F, +80%, -20%, 25V CH205 24105220 Chip, 22pF CH122 24100104 Chip, 0.1?F, +80%, -20%, 25V CH206 24105331 Chip, 330pF CH123 24100104 Chip, 0.1?F, +80%, -20%, 25V CH207 24105102 Chip, 1000pF, 25V CH124 24100104 Chip, 0.1?F, +80%, -20%, 25V...
  • Page 44 Location Location Part No. Description Part No. Description EL, 10?F, ±20%, 16V CS23 24203100 CX159 24092441 Chip, 1?F, +80%, -20%, 16V Chip, 0.1?F, ±10%, 16V CV02 24092730 CX160 24092293 Chip, 0.1?F, +80%, -20%, 25V Chip, 0.1?F, ±10%, 16V EL, 10?F, ±20%, 16V, CV03 24092730 CX163...
  • Page 45 Location Location Part No. Description Part No. Description CX262 24774470 Chip, 47pF, CH CZ19 24781181 Chip, 180pF, SL CX271 24092293 Chip, 0.1?F, +80%, -20%, 25V CZ20 24814103 Chip, 0.01?F, +80%, -20% EL, 10?F, ±20%, 16V CX301 24794100 CZ21 24781122 Chip, 1200pF, SL EL, 10?F, ±20%, 16V CX302 24092293...
  • Page 46 Location Location Part No. Description Part No. Description R304 24366103 CF, 10k ohm R403 24382101 OMF, 100 ohm, 1W R305 24322828 MF, 0.82 ohm, 1W R405 24366101 CF, 100 ohm R306 24366123 CF, 12k ohm R406 24382222 OMF, 2200 ohm, 1W R307 24366101 CF, 100 ohm...
  • Page 47 Location Location Part No. Description Part No. Description R505 24872101 Chip, 100 ohm, 1/16W R667 24366103 CF, 10k ohm R506 24872273 Chip, 27k ohm, 1/16W R671 24366102 CF, 1k ohm R507 24872392 Chip, 3900 ohm, 1/16W R672 24366102 CF, 1k ohm R512 24872102 Chip, 1k ohm, 1/16W...
  • Page 48 OMF, 82 ohm, 1W R961 24366102 CF, 1k ohm R830 24366472 CF, 4700 ohm R962 24366361 CF, 360 ohm R830 24366683 CF, 68k ohm(40WH08G) R964 24366332 CF, 3300 ohm R831 24366222 CF, 2200 ohm R965 24366471 CF, 470 ohm R836 24366472...
  • Page 49 OMF, 1500 ohm, 2W R7741 24366471 CF, 470 ohm (40WH08G) R7742 24366222 CF, 2200 ohm R8620 24546209 FR, 2 ohm, 1/2W (40WH08G) R7743 24366223 CF, 22k ohm R8630 24554102 OMF, 1k ohm, 2W (40WH08G) R7744 24366102 CF, 1k ohm R9501...
  • Page 50 CF, 330 ohm(40WH08G) R9610 24366393 CF, 39k ohm RA82 24366103 CF, 10k ohm(40WH08G) R9611 24366681 CF, 680 ohm RA89 24366152 CF, 1500 ohm (40WH08G) R9612 24366470 CF, 47 ohm RB01 24366271 CF, 270 ohm R9613 24366330 CF, 33 ohm RB02 24366471...
  • Page 51 Location Location Part No. Description Part No. Description RF10 24872103 Chip, 10k ohm, 1/16W RF38 24872103 Chip, 10k ohm, 1/16W (40WH08G) (40WH08G) RF10 23103832 Chip (Ferrite Bead), RF39 24872472 Chip, 4700 ohm, 1/16W TEM2125M (40WH08B) (40WH08B) RF11 24872471 Chip, 470 ohm, 1/16W...
  • Page 52 Location Location Part No. Description Part No. Description RH181 24872122 Chip, 1200 ohm, 1/16W RR73 24366332 CF, 3300 ohm RH182 24872122 Chip, 1200 ohm, 1/16W RR74 24366102 CF, 1k ohm RH183 24872122 Chip, 1200 ohm, 1/16W RR75 24366102 CF, 1k ohm RH184 24872122 Chip, 1200 ohm, 1/16W...
  • Page 53 Location Location Part No. Description Part No. Description RV33 24872562 Chip, 5600 ohm, 1/16W RX158 24872471 Chip, 470 ohm, 1/16W RV34 24872562 Chip, 5600 ohm, 1/16W RX161 24872101 Chip, 100 ohm, 1/16W RV37 24872750 Chip, 75 ohm, 1/16W RX163 24872393 Chip, 39k ohm, 1/16W RV60 24366681...
  • Page 54 Location Location Part No. Description Part No. Description RX285 24872332 Chip, 3300 ohm, 1/16W RZ08 24872391 Chip, 390 ohm, 1/16W RX286 24872332 Chip, 3300 ohm, 1/16W RZ09 24872101 Chip, 100 ohm, 1/16W RX291 24872101 Chip, 100 ohm, 1/16W RZ13 24872102 Chip, 1k ohm, 1/16W RX292 24872101...
  • Page 55 Part No. Description Part No. Description L685 23289109 Coil, Peaking, TRF41R0AF L8540 23280016 Coil, Peaking, TRF4100AZ L701 23237987 Coil, Peaking, TRF4100AC (40WH08G) L702 23261974 Coil, Choke, HC5-035 L8560 23280016 Coil, Peaking, TRF4100AZ L704 23103859 Coil (Ferrite Bead), TEM2011 (40WH08G) L705 23103859...
  • Page 56 Location Location Part No. Description Part No. Description LF29 23238714 Coil, Peaking, TRF4100AJ LX163 23245835 Chip, Inductor, TRF4270CB (40WH08G) LX201 23103886 Chip (Ferrite Bead), LF30 23238714 Coil, Peaking, TRF4100AJ TEM2129AM (40WH08G) LX221 23103822 Chip (Ferrite Bead), TEM2117T LF31 23289840 Coil, Peaking, TRF4100AT...
  • Page 57 Transistor, RN1204 Q823 23135008 IC, STR-F6668B Q615 A6534040 Transistor, 2SA1015-Y Q823B 72471082 Screw, BRDT2W3X10 SZN Q616 A6534040 Transistor, 2SA1015-Y Q824 A6317440 Transistor, 2SC1815-Y Q621 B0376795 IC, TA8200AH Q825 23906695 IC, MIP0224SY (40WH08G) Q621B 70391355 Screw, BITTB3X8 SZN – 57 –...
  • Page 58 Q825B 70391355 Screw, BITTB3X8 SZN QF03 23314204 Transistor, 2SC2412K, Q Q826 A8643112 Photo Coupler, TLP621(GRL-L (40WH08B) (40WH08G) QF04 23000969 IC, MX29F040QC (40WH08G) Q830 23905977 IC, PQ09RD11 QF04 23114437 Transistor, 2SC752GTM-Y Q830 A6002060 Transistor, RN1206 (40WH08G) (40WH08B) Q830B 70391355 Screw, BITTB3X8 SZN...
  • Page 59 Location Location Part No. Description Part No. Description QX01 23906921 IC, TC90A61F D402 23118094 Diode, EU2A, LF-F10 QX02 23000198 IC, EM636327Q-8 D404 23316254 Diode, ERC06-15L QX03 23905013 IC, TLC29321PW D406 A7978850 Diode, S5295G QX04 23906951 IC, SN74AHCT1G32 D411 23316731 Diode, Zener, MTZJ18B QX05 23906951 IC, SN74AHCT1G32...
  • Page 60 Diode, RL2Z(40WH08G) D7736 23316675 Diode, Zener, MTZJ6.2B D835 23118056 Diode, AG01 (40WH08G) D7738 23115599 Diode, 1N4148 D841 23316381 Diode, RU1P LF-A5 (40WH08G) D7739 23115599 Diode, 1N4148 D843 A7271460 Diode, 1Z30A (40WH08G) D7740 23115599 Diode, 1N4148 D845 A7270300 Diode, Zener, 1Z7.5...
  • Page 61 Description DD89 23118310 Diode, Zener, RD5.6M-T1B2 GJ02 24000824 Chip Jumper, 2125Type DF01 23316654 Diode, Zener, MTZJ3.0A (40WH08B) DF02 23115599 Diode, 1N4148 (40WH08G) GJ03 24000824 Chip Jumper, 2125Type DR01 23115599 Diode, 1N4148 GJ03 24000824 Chip Jumper, 2125Type DR02 23115599 Diode, 1N4148...
  • Page 62 Protector, PRF20005PRT, (40WH08B) DC60V, 2.0A U909 23784853 CONVER Board, PB9488A Z823 23144608 Protector, PRF40005PRT, U910A 23784854 BACK AV Board, PB9489A-1 DC60V, 4.0A (40WH08G) U910B 23784897 D-IN Board, PB9489A-2 * Z853 23144608 Protector, PRF40005PRT, U911A 23784629 FRONT Board, PB9406A-1 DC60V, 4.0A U911B...
  • Page 63 Location Location Part No. Description Part No. Description ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES K902 23306364 Remote Hand Unit, CT-90041 (40WH08G) K902 23306365 Remote Hand Unit, CT-90042 (40WH08B) AT03 23588265 Battery Cover Y101E 23563924 Owner’s Manual, English, 40WH08G Y101E 23565020 Owner’s Manual, English,...
  • Page 64 THIS PAGE IS INTENTIONALLY LEFT BLANK. – 64 –...
  • Page 65: Pc Boards Bottom View

    TERMINAL VIEW OF TRANSISTORS 2SD2253 2SC3852 2SC752GTM 2SC752 2SA1788 2SD1763A (old) 2SC2482 2SA562TM 2SC5243 2SC1569 2SA1015 2SC2655 2SC4544 2SC1815 2SC4721P 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 RN2203 2SD1554 ON4409 2SD2253 RN2201 RN2004 2SD1556 RN1203 2SC5143 RN1204 2SD2553 2SC5144 RN2204 RN1205 RN1202 RN1201...
  • Page 66: Specifications

    SPECIFICATIONS (Representative : 40WH08G) Rated voltage AC 230 V, 50/60 Hz Power consumption 220 W (Approx.) (at AC 220 V, 50 Hz) Dimensions × × 963.2 mm 1119.7 mm 466 mm (Width × Height × Depth) Mass 51.0 kg Screen size...
  • Page 67 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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