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Sony KV-21XE40B Service Manual
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Sony KV-21XE40B Service Manual

Trinitron color tv
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KV-21XE40B

SERVICE MANUAL

BA-4
CHASSIS
MODEL
COMMANDER
DEST.
CHASSIS NO.
KV-21XE40B
RM-Y155
E
SCC-S06G-A
KV-21XE40B
RM-Y155
TRINITRON
COLOR TV
®
—
—
1

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Summary of Contents for Sony KV-21XE40B

  • Page 1: Service Manual

    KV-21XE40B SERVICE MANUAL BA-4 CHASSIS MODEL COMMANDER DEST. CHASSIS NO. KV-21XE40B RM-Y155 SCC-S06G-A KV-21XE40B RM-Y155 TRINITRON COLOR TV ® — —...

  • Page 2: Specifications

    KV-21XE40B SPECIFICATIONS K V - 2 1 X E 4 0 B Power Requirements 120V-220V, 50-60 Hz Number of Inputs/Outputs Video Audio Speaker Output (W) 4W X 2 Power Consumption (W) In use (Max.) 105W In standby Dimensions (W/H/D) 610 x 464.5...

  • Page 3: Table Of Contents

    KV-21XE40B TABLE OF CONTENTS Section Title Page Section Title Page Warnings and Caution ............. 4 6. DIAGRAMS Self-Diagnostic Function ..........4 6-1. Block Diagrams............27 Safety Check Out Instructions ........7 6-2. Circuit Boards Location..........30 6-3. Printed Wiring Boards and Schematic Diagrams ..30 1.

  • Page 4: Warnings And Caution

    SECURITE DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES SHOWN IN THIS MANUAL OR IN SUPPLEMENTS COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES PAR ARE CRITICAL FOR SAFE OPERATION ARE IDENTIFIED SONY.
  • Page 5 KV-21XE40B DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT 2 times 4 times 5 times Lamp ON 0.3 sec. Lamp OFF STANDBY/SLEEP lamp Lamp OFF 0.3 sec. 3 sec. Diagnostic Item Flash Count* +B overcurrent 2 times Vertical deflection stopped 4 times...
  • Page 6 KV-21XE40B 6. SELF-DIAGNOSTIC CIRCUIT IC301 IC541 IC001 IC003 Y/CHROMA JUNGLE V.OUT SYSTEM MEMORY FROM IO-BDAT B-DAT IK IN 17 I-PROT FROM IC521 HP/PROTECT PIN 7 O-LED SDAT +B overcurrent (OCP) Occurs when an overcurrent on the +B(115V) line is detected by pin 18 of IC301. If the voltage to pin 18 of IC301 is less than 1V when V.SYNC is more than seven verticals in a...

  • Page 7: Safety Check Out Instructions

    KV-21XE40B SAFETY CHECK-OUT After correcting the original service problem, perform the LEAKAGE TEST following safety checks before releasing the set to the The AC leakage from any exposed metal part to earth ground customer: and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampere).

  • Page 8: General

    SECTION 1-1 GENERAL The instructions mentioned in this section are partial abstracts from the Operating Instruction Manual. The pages numbers shown reflect those of the Operating Instruction Manual. Warnings and Cautions Step 1: Connecting the TV Step 2: Using the Remote Control The following steps guide you through your initial set up.

  • Page 9: Setting Menu Language

    Step 3: Setting Menu Language Step 4: Setting up Your Channels Watching the TV Changing the Menu Language Setting Up the TV Automatically Skipping or Adding Channels (CHANNEL SKIP /ADD) Press POWER to turn the TV on. Note Except Canadian models KV-20M40, 20S40, 20S41 only After you run AUTO PROGRAM, you can skip unnecessary channels or •...

  • Page 10: Additional Features

    Additional Features Additional Features (continued) Using the VIDEO Menu Setting the SLEEP Timer Enter the ON/OFF TIMER setting. Blocking out a Channel (CHANNEL BLOCK) Adjusting the VIDEO Settings ON/OFF TIMER Ł Press SELECT until the day entry is EVERY SUN - SAT Ł The SLEEP timer programs the TV to stay on for a length of time and then This feature is useful in preventing child access to designated You can adjust the PICTURE, BRIGHTNESS, COLOR, HUE, and...

  • Page 11: Troubleshooting

    • Use AUTO PROGRAM to add receivable channels that are not presently in the TV memory (page 7). If, after reading these operating instructions, you have additional questions related to the use of your Sony television, please call our Direct Response Center at 1-800-222-SONY (7669).

  • Page 12: Instalacion

    SECTION 1-2 GENERAL Las instrucciones contenidas en esta seccion, son abstractos del manual de instrucciones y operacion. La numeracion de las paginas hacen referencia el numero de pagina en el manual original. Advertencias Paso 1: Instalación Paso 2: Uso del Control Remoto Este instructivo le guiará...

  • Page 13: Programacion De Canales

    Paso 4: Programación de Canales Paso 3: Ajuste de Idioma de los Menús Paso 3: Ajuste de Idioma de los Menús Paso 4: Programación de Canales Para ver Programas de Televisión Cambio de Idioma de los Menús Programación Automática del Televisor Para Omitir o Añadir Canales (OMITIR/AÑADIR) Oprima POWER para encender el televisor.

  • Page 14: Otras Funciones

    Otras Funciones Otras Funciones (continuación) Uso del Menú de VIDEO Apagado Automático (SLEEP) Para usar BLOQUEAR CANAL Ajustes de la imagen (VIDEO) Indique el día, hora, duración y canal ENCENDIDO/APAGADO deseados. CADA DOM - SAB La función SLEEP permite que el televisor esté encendido por el período de Ł...

  • Page 15: Solucion De Problemas

    MENU de video (página 9). • Coloque las pilas del control remoto en la En la pagina 3, el modelo KV-21XE40B no tiene el posición correcta. boton de MAIN POWER. Usted puede encender el • Pruebe otro canal. Es posible que el problema...

  • Page 16: Disassembly

    KV-21XE40B SECTION 2 DISASSEMBLY 2-1. REAR COVER REMOVAL Rear Cover Four Screws (BVTP 4X16) 2-2. A BOARD REMOVAL 2-3. SERVICE POSITION — 16 —...

  • Page 17: Picture Tube Removal

    KV-21XE40B 2-4. PICTURE TUBE REMOVAL Coil Grips Before removing anode cap: WARNING H.V. remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge CRT before attempting to remove the anode cap : Short between anode and CRT coating earth ground strap.

  • Page 18: Set-Up Adjustments

    KV-21XE40B SECTION 3 SET-UP ADJUSTMENTS Perform the adjustments in order as follows: The following adjustments should be made when a complete realignment is required or a new picture Beam Landing tube is installed. These adjustments should be performed Convergence with rated power supply voltage unless otherwise noted.

  • Page 19: Convergence

    KV-21XE40B 3-2. CONVERGENCE If the blue dot does not converge with red and green dots, perform the following steps: Preparation: • Move BMC magnet (a) to correct insufficient H. Static convergence. • Before starting, perform FOCUS, V. LIN and V. SIZE adjustments.

  • Page 20: Focus

    KV-21XE40B (3) Screen-corner Convergence 3-5. METHOD OF SETTING THE SERVICE ADJUSTMENT MODE (1) SERVICE MODE PROCEDURE Standby mode. (Power off) on the Fig. 9 Remote Commander. (Press each button within a second.) Affix a permalloy assembly corresponding to the misconverged...

  • Page 21: Safety Related Adjustments

    KV-21XE40B SECTION 4 SAFETY RELATED ADJUSTMENTS BOARD (3) Hold-down Readjustment R582 CONFIRMATION METHOD (HV HOLD- DOWN CONFIRMATION) AND READJUSTMENTS If the current setting indicated in step 2-2 cannot be met, The following adjustments should always be performed when readjustment should be performed by altering the resistance...

  • Page 22: Circuit Adjustments

    KV-21XE40B SECTION 5 CIRCUIT ADJUSTMENTS 5-1. ELECTRICAL ADJUSTMENT BY REMOTE COMMANDER 7. Press then on the Remote Commander to Use Remote Commander (RM-Y155) to perform circuit initialize. adjustments on this model. Carry out step 7 when adjusting SERVICE RESET NOTE : Test Equipment Required.
  • Page 23 KV-21XE40B (4) Item of Adjustments D A T A INITIAL DATA AVERAGE NO. I T E M FUNCTION RANGE NTSC P A L - M P A L - N VIDEO D A T A HSIZ HORIZONTAL AMP. ADJ. 0 - 6 3 HPOS HORIZONTAL POS.

  • Page 24: A Board Adjustments

    KV-21XE40B 6. Connect an oscilloscope to CN1752 Pin 4 or (R OUT) of C Board and ground. (5) Feature ID Map 7. Select RDRV with and for: 1.70 ± 0.05 Vp-p. 8. Adjust with White 1.70 ± 0.05 Vp-p 21XE40B Black 5-2.
  • Page 25 KV-21XE40B V. LINEARITY (VLIN) AND V CORRECTION 3. Select the item DCOL and set to "0" level. CN1752 Pin (BLUE OUT) of 4. Connect an oscilloscope to 1. Input a cross-hatch signal. C Board and ground. 2. V. Correction is automatically adjusted from the circuit and 5.

  • Page 26: Diagrams

    6-2. Circuit Boards Location Adjustment ( [) Part replaced ( ]) IC301, IC521, IC602, D572, D573, D574, DY, C511,C574 HV HOLD-DOWN C575, R578, R582, R583, R584, (R582) R585, R586, R625, R626, R634, R635,T504 (FBT) IC001, IC602, R030, B+ VOLTAGE R626, R632, R633, R635, CONFIRMATION R636, R637, R638, R639 •...
  • Page 27 C R T A M P BLUE I C 7 0 1 CN301 C N 1 7 5 2 TP47B B U F F E R TP102 Q 3 9 4 AMP(SECAM DET.) VIDEO TV/C2 SECAM V I D E O O U T BUFFER BELL...
  • Page 28 STEREO CN203 RF IN :ZZZ <FOR JIG> TU101 J201 BFT-WA411 J202 STEREO MONO REAR A/V STEREO :ZZZ FRONT A/V RF-AGC PIN 21 IC401 :ZZZ TDA7057AQ/N2 TP100 PIN 22 AUDIO AMP C222 R205 C151 470k R202 C205 470k R101 :ZZ-CP R150 R204 AUDIO-L(+)OUT C150...
  • Page 29 A BOARD IC VOLTAGE LIST IC001 IC002 2 . 0 6 . 0 volt volt 5 . 0 6 . 0 0 . 4 5 . 2 4 . 9 5 . 0 6 . 0 0 . 6 0 4 .
  • Page 30 Pos. I + i Out 1 Input 1 Volume Control 1 Neg. Out 1 I - i TEMPERATURE STABILIZER PROTECTION Pos. I + i Out 2 Input 2 Volume Control 2 Neg. I - i Out 2 Power Power Signal Gnd 1 Gnd 2 A BOARD : IC401 TDA7057Q...
  • Page 31 Supply OutPut Flyback Voltage State Supply Generator FLYBACK GENERATOR Inv. Input OutPut POWER AMPLIFIER Non-Inv. Input THERMAL PROTECTION A BOARD : IC541 TDA8172...
  • Page 32 Vout Vin3 BUFFER Vin2 Vin1 A BOARD : IC200, 201 NJM2521M...
  • Page 33 A BOARD WAVEFORMS TV IN 4.9 Vp-p (H) 3.6 Vp-p (8MHz) 1.0 Vp-p (H) 4.2 Vp-p (H) 1.4 Vp-p (V) 1.4 Vp-p (V) 8.6 Vp-p (V) 2.0 Vp-p (H) 4.5 Vp-p (V) 3.0 Vp-p (H) 3.4 Vp-p (H) 2.7 Vp-p (H) 91.3 Vp-p (H) 25.0 Vp-p (H) 2.8 Vp-p (H)
  • Page 34 A BOARD TRANSISTOR VOLTAGE LIST Q001 5 . 2 0 . 7 5 . 0 Q002 0 . 7 0 . 3 Q202 0 . 0 2 0 . 7 Q203 1 . 8 0 . 7 Q204 0 . 7 Q205 4 .

  • Page 35: A Board

    A BOARD SEMICONDUCTOR LOCATION DIODE D001 G-10 IC001 I-10 D002 G-12 IC002 I-12 D003 IC003 J-11 D004 IC004 G-13 D038 I-11 IC200 D090 H-10 IC201 D201 IC301 D202 IC401 D203 J-13 IC521 D204 J-12 IC541 D205 IC601 D208 E-10 IC602 D209 J-12 TRANSISTOR...
  • Page 36 20V: 21NX CN1753 TAB CONTACT:ZZZ J1751 TO A BOARD R1760 T504(FBT) 100k D1758 1/2W RGP10GPKG23 C1752 0.0047 F:CC C1755 2.2mF 160V KR G1 G4 HV R1770 TO FBT 560k 1/2W <FOCUS> CN1755 G2 VOLTAGE AVERAGE :ZZZ SET AT 320V TAB(CONTACT) R1759 1/2W R1761...
  • Page 37 C BOARD WAVEFORMS 120.6 Vp-p (H) 140.0 Vp-p (H) 107.8 Vp-p (H)

  • Page 38: C Board

    C BOARD IC VOLTAGE LIST IC1751 volt 2 . 3 2 . 1 2 . 3 3 . 8 2 0 2 . 5 1 3 9 . 3 1 5 0 . 4 1 4 1 . 8 All voltages are in V...
  • Page 39 C BOARD TRANSISTOR VOLTAGE LIST Q1751 0 . 7 0 . 1 All voltages are in V...

  • Page 40: Semiconductors

    6-4. SEMICONDUCTORS 2SA1162-G 2SA1175-HFE 2SC3209LK 2SC4159-E 2SD601A-Q 2SC2785-HFE 2SD1312-K 2SB709A-QRS-TX 2SD774-34 LETTER SIDE RD9.1EW MA111 2SK2845-LB102 2SC5426-01 ANODE CATHODE MX0541B-F D10SC4M D2S4MF D3SB60F CATHODE ‘ ‘ E1 C1 ‘ ANODE ‘ U05G D1N20R D1NL20-TA D1NL40-TA2 RD6.2ESB2 EGP20G ERA22-08TP3 RD8.23SB2 EL1Z LNK0120022G MTZJ-5.1C 1SS83...

  • Page 41: Exploded Views

    7-1. CHASSIS 7-685-663-79 SCREW +BVTP 4X16 REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK 4-046-161-01 EMBLEM (NO.8) SONY 17 * A-1298-700-A A BOARD, COMPLETE 18 ¡ X-4035-232-1 BEZNET, ASSY 1-453-283-11 TRANSFORMER ASSY, FLYBACK (NX-1744//X4E4) 19 ¡ 4-062-604-01 DOOR 8-598-431-10...

  • Page 42: Electrical Parts List

    KV-21XE40B Note: Note: SECTION 8 The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 43 KV-21XE40B Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 44 KV-21XE40B Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 45 KV-21XE40B Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 46 KV-21XE40B Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 47 KV-21XE40B The components identified by [ in this manual have been Note: Note: The components identified by shading Les composants identifies per un trame et une marque carefully factory-selected for each set in order to satisfy and mark ¡ ¡ ¡ ¡ ¡...
  • Page 48 KV-21XE40B Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.

  • Page 49: Accessories And Packing Material

    KV-21XE40B Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 50 REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK Sony Corporation Sony Technology Center English 98HJ74057-1 Product Quality Division Printed in U.S.A. 9-965-848-01 Service Promotion Department © 1998.8 — 52 —...

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