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Toshiba 42WH18P Service Manual
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Toshiba 42WH18P Service Manual

Toshiba 42WH18P Service Manual

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FILE NO. 030-200115
SERVICE MANUAL
COLOUR TELEVISION
C01P Chassis
42WH18P
50WH18P
PUBLISHED IN JAPAN Sep., 2001 So

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  • Page 1 FILE NO. 030-200115 SERVICE MANUAL COLOUR TELEVISION C01P Chassis 42WH18P 50WH18P PUBLISHED IN JAPAN Sep., 2001 So...

  • 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 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. Anode Cap 4. Remove CRT Assembly from CRT Mounting. 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 In case of warming up of more than 2 hours under a condition Note: Keep in mind that only the BLUE electric focus is ad- that the large anode current is running through the projection justed with the black cross-hatch. tube so that for example the all-white pattern appears, adjust to obtain the sharpest focus while observing the whole screen 20.
  • Page 8 LOCATION OF SCREEN AND FOCUS VR'S To remove the Speaker grille and Front panel. FOCUS VR's SCREEN VR's 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 PRE- CAUTION" 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: 1.

  • Page 10: Service Mode

    SERVICE MODE 1. ENTERING TO SERVICE MODE 3) While pressing the o button, 1) Press o button once on 2) Press o button again to 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 32) 5.
  • Page 12 8. SELF DIAGNOSTIC FUNCTION 1) Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s are executed properly. 2) During diagnosis, the following displays are shown. Indicated color of mode now selected : Green and Red Indicated color of other modes : Black...

  • 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”, “OPT1” and "OPT2" 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 WIDTH 1. Call up the adjustment mode display, then select the item WID. (WID) 2. Press the VOLUME t button to get the picture so the left or right edges of raster begins to lack. (Picture size wide) 3.
  • Page 15 C01P: Series (Reference factory adjustment) – 15 –...
  • Page 16 Adjustment items Adjusting methods Focus adjustment (Conditions) - User adjustment: Dynamic mode, Cinema mode - To be performed after centering magnet adjustment. - Signal : Lens: R ..Retma Pattern (PAL) G ..Crosshatch (PAL) B ..Crosshatch (PAL) Electrical focus : R ..
  • Page 17 Adjustment items Adjusting methods Focus adjustment 4) Adjust the G lens focus. (Applicable only to 43PH, 42W) The method mentioned left is Watch the horizon of the left and right both ends of the screen (the range of applied to the focus adjustment circle with 100mm diameter shown in the following sketch), make optimum on the G lens adjustment of adjustments on the G lens focus, and check that the focus balance on the...
  • Page 18 Adjustment items Adjusting methods Focus adjustment 4. B adjustment 1) Set to the B monochrome by lens cap. 2) Receive the image of Retma pattern. 3) Adjust the B electrical focus. Adjust by focus volume of the focus block (Z410) so that the screen center will come to optimum focus (point where the brightness gets minimized) 4) Receive the image of crosshatch pattern.
  • Page 19 – 19 –...
  • Page 20 – 20 –...

  • Page 21: Convergence Adjustment

    CONVERGENCE ADJUSTMENT 1. SCREEN ADJUSTMENT Before proceeding to the adjustment for each screen, always The adjustment is carried out on four screens; 4 : 3 and 16 : 9 perform the adjustments for vertical size (HIT) and horizontal screens in both PAL and NTSC modes. When making the ad- size (WID) with the main deflection data changed.
  • Page 22 1-2. Remote Control Key o key ....Push this key twice and the set con- sole menu key to enter the service CALL mode. 7 key ....Push 7 key to enter and cancel the convergence menu. 5 key ....Cursor shift / data change mode change-over.
  • Page 23 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 24 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 25 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 26 3 Screen adjustment dimensions 3-1 WIDE/4:3 (PAL mode) 246.8 217.9 130.7 43.6 (screen center) 43.6 130.7 217.9 246.8 3-2 Super Wide (PAL mode) 261.5 231.0 137.0 (pattern center) -5.3 52.0 143.3 232.1 261.5 Caution: Do not perform the VLIN adjustment. –...
  • Page 27 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. 275.6 238.9 165.4 55.1 55.1 165.4 238.9 275.6 3-4 Subtitle (PAL mode)
  • Page 28 3-5 WIDE/4:3 (NTSC mode) 242.6 207.9 104.0 (screen center) 104.0 207.9 242.6 3-6 Super Live (NTSC mode) 261.5 223.7 110.3 (pattern center) -5.3 117.6 226.8 261.5 Caution: Do not perform the VLIN adjustment. – 28 –...
  • Page 29 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 30: Screen And Mirror Alignments

    SCREEN AND MIRROR ALIGNMENTS ASSEMBLING OF MOUNTING OF FRONT SCREEN FRONT SCREEN Fresnel sheet 5 CLIPS Lenticular shield 3 CLIPS FRONT 5 CLIPS Lenticular sheet 3 CLIPS FRONT Fresnel sheet Stick cotton cloth tape Label with part Label with part number number 2 screws...

  • Page 31: 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 32: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 42", 50" HIGH VOLTAGE AT ZERO BEAM: 33.0 kV MAX HIGH VOLTAGE: 34.5 kV AC VOLTAGE 220~240 V Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Adjustment Reference data Item...

  • Page 33: Location Of Controls

    LOCATION OF CONTROLS (Representative: 42WH18P) Front VIDEO-3 (VIDEO-3) S-VIDEO TERMINAL MAIN SWITCH HEAD PHONE POWER ON-TIMER STEREO BILINGUAL VIDEO EXIT MENU POSITION UP VOLUME DOWN VOLUME UP POSITION DOWN Back EXTERNAL SPEAKER SWITCH (EXT/INT) AERIAL TERM EXTERNAL SPEAKER TERMINAL VIDEO-2 (21-PINS S-VIDEO AV)
  • Page 34 Remote Controller Power Key: TV, VCR, DVD CALL 1. TEXT Sub Function <HOLD, REVEAL, F-T-B, TIME/TXCL, SUB PAGE> ---------------- Only TV mode operation 2. VCR & DVD Common <Power, Play, Stop, Pause, Eject, NexT View NexT -View FF, REV, Skip - FWD, Skip - REV> EXIT MENU MENU...

  • Page 35: Circuit Block Diagram

    – 35 –...

  • Page 36: Mechanical Disassembly

    MECHANICAL DISASSEMBLY (For 42WH18P) K502 K601 K501 SCREWS A001 (A420) Labels A424 A201 4 SCREWS 4 SCREWS A202 (A213) (A214) (A223) (A225) A258 K101 K102 K103 – 36 –...
  • Page 37 MECHANICAL DISASSEMBLY (For 50WH18P) 1 Speaker Grille Removal 2 Control Panel Removal 3 Front Mask Removal 4 Mask Removal A101 A202 A201 A201 A213 (A225) A223 (A214) K502 K501 (A258) A258 4 screws 5 Shield Plate, Lens Removal 6 Mirror Removal 7 Back Board Removal 5 screws 4 screws...
  • Page 38 THIS PAGE IS INTENTIONALLY LEFT BLANK. – 39 – – 40 –...

  • Page 39: Chassis And Cabinet Replacement Parts List

    CC : Carbon Composition : 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 : 42WH18P/50WH18P Location Location Location Location Location Location...
  • Page 40 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description C468 24820123 PLASTIC FILM, 630V 0.012UF J...
  • Page 41 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description C717 24109103 CERAMIC CHIP CK73B 50V 10000PF K...
  • Page 42 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description C915 24679330 ELECTROLYTIC, 250V 33UF M 3A...
  • Page 43 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description CC75 24109102 CERAMIC CHIP CK73B 50V 1000PF K...
  • Page 44 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description CH140 24100104 CERAMIC CHIP, 25V 100000PF Z CH224 24105220...
  • Page 45 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description CV10 24794100 ELECTROLYTIC, 16V 10UF M...
  • Page 46 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description CX368 24105181 CERAMIC CHIP CC73CH 50V 180PF J CZ22...
  • Page 47 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description R340 24011824 METAL FILM CHIP 1/20W 820K J...
  • Page 48 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description R584 24011101 CHIP, METAL FILM, 1/20W 100 OHM J...
  • Page 49 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description R783 24552221 OXIDE METAL FILM, 1/2W 220 OHM J...
  • Page 50 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description R2107 24011101 CHIP, METAL FILM, 1/20W 100 OHM J...
  • Page 51 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description R7409 24011471 METAL FILM CHIP 1/20W 470 J...
  • Page 52 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description RA26 24011102 CHIP, METAL FILM, 1/20W 1K OHM J...
  • Page 53 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description RF22 24011681 METAL FILM CHIP 1/20W 680 J...
  • Page 54 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description RH192 24872122 CHIP, METAL FILM, 1/16W 1.2K OHM J RS11...
  • Page 55 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description RV67 24011102 CHIP, METAL FILM, 1/20W 1K OHM J...
  • Page 56 L441 23233995 COIL, LINEARITY, TLN2215AG RX342 24872223 CHIP, METAL FILM, 1/16W 22K OHM J L462 23231340 DEFLECTION YOKE, TDY707PDC (42WH18P) RX345 24872101 CHIP, METAL FILM, 1/16W 100 OHM J L462 23231344 DEFLECTION YOKE, TDY707PDD (42WH18P) RX350 24872821 CHIP, METAL FILM, 1/16W 820 OHM J...
  • Page 57 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description L853 23248195 COIL, CHOKE, TLN3441AT...
  • Page 58 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description LX163 23245835 COIL, CHIP-INDUCTOR-27MMHJ, TRF4270CB...
  • Page 59 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Q640 B0376856 IC, TA8211AH...
  • Page 60 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Q962 23114425 TRANSISTOR, 2SA1015-Y(TE...
  • Page 61 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description QX29 23314345 TRANSISTOR, IMZ1...
  • Page 62 Location Location Location Location Location Location Location Location Location Location Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description Parts No. Parts No. Parts No. Parts No. Parts No. Description Description Description Description Description D816 23115599 DIODE, 1N4148...
  • Page 63 * V903A 23903148 SOCKET, ISH-44S-E ICE #5 GJ50 24000445 CHIP JUMPER, 1608TYPE W661 23351131 SPEAKER, SPK-1390, 120X120, 8 OHM, GJ51 24000445 CHIP JUMPER, 1608TYPE 15W (42WH18P) GJ59 24000445 CHIP JUMPER, 1608TYPE W661 23151232 SPEAKER, SPK-1235 (50WH18P) GJ60 24000445 CHIP JUMPER, 1608TYPE W662...
  • Page 64 ZX402 23303181 EMI FILTER, TEM1012N 43WH18P/50WH18P PC BOARD ASSEMBLIES CABINET PARTS U101 23786797 SIGNAL BOARD, PD0128D A001 23008798 OTHER BLOCK, WOOD CABINET 42WH18P U102 23786828 DEF-CONVER BOARD, PD0129D (42WH18P) A101 23411642 WOOD CABINET (50WH18P) U102 23787057 DEF-CONVER BOARD, PD0129F (50WH18P)
  • Page 65 A547 23035010 SCREW, PBI 4X16 A701 23064584 CARTON, CASE (42WH18P) A701 23064642 CARTON, CASE (50WH18P) A702 23946233 PACKING, TOP PACKING (42WH18P) A702 23946270 PACKING, TOP PACKING (50WH18P) A703 23946234 PACKING, TOP PACKING 42WT19B A726 23974753 POLYPROPYLENE BAND, 3327DB A727 23974753...

  • Page 66: Terminal View Of Transistors

    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 RN2204 RN1205 RN1202 RN1201 –...
  • Page 67 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 83 –...

  • Page 68: Pc Boards Layout Top View

    MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 84 –...

  • Page 69: Pc Boards Bottom View

    MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 85 –...
  • Page 70 SCHEMATIC DIAGRAM MODEL : 42WH18P / 50WH18P 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 71 SPECIFICATIONS (Representative: 42WH18P) Rated voltage AC 220 V – 240 V, 50/60 Hz Dimensions × × 1004 mm 1161 mm 415 mm (Width × Height × Depth) Mass 48.0 kg Screen size Type 42 System Channel CATV Television system Channel...
  • Page 72 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...
  • Page 73 SCHEMATIC DIAGRAM MODEL : 42WH18P / 50WH18P 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 74 SCHEMATIC DIAGRAM MODEL : 42WH18P / 50WH18P NOTE: WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" ON THE MANUAL FOR THIS MODEL. 1. RESISTOR Resistance is shown in ohm [K = 1.000, M = 1.000.000]. All resistors are 1/6W and 5% 4.
  • Page 103 PC BOARDS LAYOUT TOP VIEW – 68 –...
  • Page 104 SIGNAL BOARD PD0128D BOTTOM (FOIL) SIDE – 69 – – 70 –...
  • Page 105 DEF/POWER BOARD PD0129D BOTTOM (FOIL) SIDE – 71 – – 72 –...
  • Page 106 MAIN/POWER BOARD PD0132 BOTTOM (FOIL) SIDE – 73 – – 74 –...
  • Page 107 CRT-D RED BOARD PD0131B-1 CRT-D BLUE BOARD PD0131B-3 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE SVM GREEN BOARD PD0131B-4 BOTTOM (FOIL) SIDE CRT-D GREEN BOARD PD0131B-2 BOTTOM (FOIL) SIDE SVM RED BOARD PD0131B-5 BOTTOM (FOIL) SIDE – 75 – – 76 –...
  • Page 108 SVM BLUE BOARD PD0131B-6 BOTTOM (FOIL) SIDE DFS BOARD PB9954 BOTTOM (FOIL) SIDE – 77 –...
  • Page 109 FRONT IN BOARD PD0208-1 BOTTOM (FOIL) SIDE KEY-IND BOARD PD0208-3 BOTTOM (FOIL) SIDE RMT IN BOARD PD0208-3 BOTTOM (FOIL) SIDE – 78 –...
  • Page 110 D-CONV BOARD PB9486G BOTTOM (FOIL) SIDE EPG-M2 BOARD PD0216 BOTTOM (FOIL) SIDE – 79 –...
  • Page 111 EPG-POWER BOARD PD0205 BOTTOM (FOIL) SIDE EXT-SP BOARD PD0206 BOTTOM (FOIL) SIDE – 80 –...
  • Page 112 AC3 POWER BOARD PD0203 BOTTOM (FOIL) SIDE – 81 –...

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