Toshiba 20AF41 Service Manual

Toshiba 20AF41 Manual

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  • Toshiba 20AF41 | Service Manual - Page 1
    TOSHIBA SERVICE MANUAL FILE NO.050-200101 COLOR TELEVISION 20AF41 DOCUMENT CREATED IN JAPAN, DEC., 2001
  • Toshiba 20AF41 | Service Manual - Page 2
    . (Particularly the VERSION LETTER.) 1. MODEL NUMBER and VERSION LETTER The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be found at the end of the SERIAL NUMBER. 2. PART NO. and DESCRIPTION You can find it in your SERVICE MANUAL. IMPORTANT Inferior silicon grease
  • Toshiba 20AF41 | Service Manual - Page 3
    Outline of the Product 20 inch( 508.0 mmV TV Sound Yes( NICAM GERMAN USA JAPAN) No G-11.Tuner Sound Muting Yes No G-12.Power Source 120 V AC 50Hz AC 60Hz G-13.Power Consumption: Stand by: Per Year: 105 W at AC - W at DC 4 W at AC kWh / Year 120 V 60 Hz V 120 V 60 Hz G-14.Dimensions
  • Toshiba 20AF41 | Service Manual - Page 4
    Storage 5 ºC~ 40 ºC -20 ºC~ 60 ºC G-20.Operating Humidity Less than 80 %RH G-21.Clock and Timer Sleep Timer Yes Max 120 Min.( 10 Min. Step) No On/Off Timer Yes Programs No Wake Up Timer Yes Programs No G-22.Timer back up Time More than -- Minutes (at Power Off Mode) G-23.Terminals
  • Toshiba 20AF41 | Service Manual - Page 5
    G-27.Speaker Position Size Imp Power Front Side 2x4.7 inches 8 Material: ---- Dimensions: ---- Description of W/Photo Dimensions: 658 30.Accessories Owner's Manual ( W/Warranty) Instructions Envelope Remote Control Unit Toll Free Insert Sheet Warning Sheet Schematic Diagram
  • Toshiba 20AF41 | Service Manual - Page 6
    -Theft Rental Memory ( Last CH V-Chip(Toshiba Type) BBE Auto Search CH Allocation SAP Remote Control Unit: Glow in Dark Remocon Power Source: Total 42 Key Power 0 1 2 3 4 5 6 7 8 9 100 RC-DU Yes D.C 3 V No Battery UM - 4 x 2 Muting TV/Video(TV/AV) TV TV/VCR(VCR) Rew CODE TV VCR Cable Play
  • Toshiba 20AF41 | Service Manual - Page 7
    support. (Refer to Fig. 1-2.) Rubber Cap Fig. 1-4 4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 1-5. CRT Support Fig. 1-2 Support CRT Fig. 1-5 5. Confirm that the Support is securely connected. 6. Put on the Rubber Cap without moving any parts
  • Toshiba 20AF41 | Service Manual - Page 8
    unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key for more than 1 second. Set Key Remocon Key VOL. (-) MIN 0 VOL. (-) MIN 1 Operations Releasing of V-CHIP PASSWORD. Initialization
  • Toshiba 20AF41 | Service Manual - Page 9
    in Fig. 1-2. 3. Press the MENU button on the remote control to end the adjustments. 2. BASIC ADJUSTMENTS 2-1: CONSTANT VOLTAGE 1. Set condition is AV MODE without signal. 2. Connect the digital voltmeter to TP002. 3. Adjust the VR502 until the digital voltmeter is 111 ± 1V. 2-2: RF AGC 1. Receive
  • Toshiba 20AF41 | Service Manual - Page 10
    2. Press the VOL. UP/DOWN button on the remote control until the difference of A and B becomes minimum. (Refer to Fig. 2-1) TV 2-10: PARABOLA 1. Receive the crosshatch signal from the Pattern Generator. 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate
  • Toshiba 20AF41 | Service Manual - Page 11
    the TV/VIDEO button on the remote control to set to the CS mode. Then perform the above adjustments 1~2. 2-19: SUB TINT/SUB COLOR 1. Receive the color bar pattern. (RF Input) 2. Connect the synchro scope to TP806. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (20
  • Toshiba 20AF41 | Service Manual - Page 12
    ELECTRICAL ADJUSTMENTS 3. PURITY AND CONVERGENCE ADJUSTMENTS NOTE 1. Turn the unit on and let it warm up for at least 30 minutes before performing the following adjustments. 2. Place the CRT surface facing east or west to reduce the terrestrial magnetism. 3. Turn ON the unit and demagnetize with a
  • Toshiba 20AF41 | Service Manual - Page 13
    MAJOR COMPONENTS LOCATION GUIDE TP901 TU001 J701 J703 J704 J705 TP001 J702 VR502 TP002 T501 FB401 MAIN PCB FOCUS VOLUME SCREEN VOLUME J801 TP806 TP804 CRT PCB
  • Toshiba 20AF41 | Service Manual - Page 14
    TU001 IF SDA SCL 11 5 4 BLOCK DIAGRAM MICON IC101 OEC7054A 39 SCL 37 SDA YUV IN IF/CHROMA/AUDIO CONTROL IC303 M62420SP 19 2 18 SCL 17 SDA 30 32 31 25 22 20 24 23 AV SWITCH IC701 MM1311AD 9Y 6C 3Y 5C 2L 4R 1V 27 29 14 15 13 8 10 7 LRV LRV YUV IN S INPUT LINE1 LINE2 +12V +180V +25V POWER
  • Toshiba 20AF41 | Service Manual - Page 15
    PRINTED CIRCUIT BOARDS MAIN (INSERTED PARTS) SOLDER SIDE TP901 TP001 C507 W112 W111 R707 R705 J702 W110 D711 R702 J701 C747 W109 C728 R718 C739 C738 C743 C744 R743 W147 R708
  • Toshiba 20AF41 | Service Manual - Page 16
    C524 C512 C509 R533 C554 R532 R510 R511 PRINTED CIRCUIT BOARDS MAIN (CHIP MOUNTED PARTS) SOLDER SIDE R504 Q406 C120 R435 R405 R138 R755 C734 R724 Q709 R725 C706 R726 C717 R701 R719 C731 R721 R722 C723 R757 C722 C703
  • Toshiba 20AF41 | Service Manual - Page 17
    Q802 R829 TP805 D801 L803 TP804 L802 Q801 Q803 TP806 L804 Q812 R806 R804 S851 S852 CP803 W802 PRINTED CIRCUIT BOARDS W006 COMB FILTER (INSERTED PARTS) SOLDER SIDE IC903 W008 L913 C903 C909 W005 L903 C901 L905 C908 L902 R901 W001 C941 C947 W004 W003 W002 L910 C953 C949 C946
  • Toshiba 20AF41 | Service Manual - Page 18
    PRINTED CIRCUIT BOARDS COMB FILTER (CHIP MOUNTED PARTS) SOLDER SIDE Q912 R945 R960 R942 C954 R954 C951 R966 R968 C907 C937 R967 C936 C904 Q913 R957 C906 C915 R864 R865 C857 CRT (CHIP MOUNTED PARTS) SOLDER SIDE R821 C806 R817 C804 R811 R815 R810 R813 C805 R819 R814 C867 R853 R859 R852
  • Toshiba 20AF41 | Service Manual - Page 19
    / TUNER SCHEMATIC DIAGRAM (MAIN 15K RED LED POWER ON D109 4.8 0 EXT MUTE 0 TV MUTE 0 BBE H 0 26 25 24 23 22 21 20 19 18 17 16 PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT
  • Toshiba 20AF41 | Service Manual - Page 20
    POWER GND_POWER 4 GND_SIGNAL P.CON+9V P.CON+5V FROM/TO MICON/TUNER 19 20 21 PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT
  • Toshiba 20AF41 | Service Manual - Page 21
    DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE A B C CAUTION: SINCE THESE PARTS MARKED BY ARE
  • Toshiba 20AF41 | Service Manual - Page 22
    NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME CAUTION: SINCE THESE PARTS MARKED BY ARE ATTENTION: LES PIECES REPAREES PAR UN ETANT NOTE: THE RESISTOR MARKED F IS FUSE RESISTOR. WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE CRITICAL
  • Toshiba 20AF41 | Service Manual - Page 23
    VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. A NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE B C CAUTION: SINCE THESE PARTS MARKED BY ARE CRITICAL
  • Toshiba 20AF41 | Service Manual - Page 24
    4 3 2 NOTE: THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE B C D E F 1 PCB010 TMX481 G H
  • Toshiba 20AF41 | Service Manual - Page 25
    A B C D E F COMB FILTER SCHEMATIC DIAGRAM 8 (COMB FILTER PCB) 7 G H 8 7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 6 FROM PART WAS MEASURED NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST OF PRINTING AND SUBJECT TO CHANGE WITHOUT
  • Toshiba 20AF41 | Service Manual - Page 26
    THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE CAUTION: SINCE THESE PARTS MARKED BY ARE CRITICAL
  • Toshiba 20AF41 | Service Manual - Page 27
    7 1V 20µs/div 12 1V 2µs/div 3 1V 50µs/div 8 0.5V 10ms/div 13 1V 20µs/div 4 1V 0.1ms/div CHROMA/IF 9 1V 50µs/div 14 2V 20µs/div 5 1V 50µs/div 10 2V 20µs/div 15 2V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Toshiba 20AF41 | Service Manual - Page 28
    5V 2ms/div AV 18 10V 10ms/div 23 2V 5ms/div 28 200mV 20µs/div 19 20V 20µs/div 24 2V 5ms/div 29 200mV 20µs/div 20 2V 20µs/div 25 2V 5ms/div 30 2V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Toshiba 20AF41 | Service Manual - Page 29
    WAVEFORMS 31 1V 50µs/div 36 1V 5ms/div CRT 32 2V 5ms/div 37 50V 20µs/div 33 2V 5ms/div COMB FILTER 38 50V 20µs/div 34 0.5V 20µs/div 39 50V 20µs/div 35 1V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Toshiba 20AF41 | Service Manual - Page 30
    MECHANICAL EXPLODED VIEW 201 115 116 125 201 201 201 201 201 202 117 119 119 J801 114 123 201 116 122 118 117 121 122 122 V801 122 107 117 PCB110 PCB060 (CRT PCB) (VM COIL PCB) L503 117 FB401 102 120 203 124 204 204 127 126 205 204 106 127 SP352 126 204 PCB010 (MAIN PCB)
  • Toshiba 20AF41 | Service Manual - Page 31
    MECHANICAL REPLACEMENT PARTS LIST Location 701WPJ0997 CABINET,FRONT 109 AD300009 713WPA0134 GUIDE,REMOCON 110 AD300010 711WPA0147 PLATE,DISPLAY INSTRUCTION BOOK KIT --- AD300436 J3I70416 IMPORTANT SAFETY INSTRUCTIONS --- AD300138 J3I70701 INSTRUCTION BOOK --- AD300139 J3I70715 SERVICE
  • Toshiba 20AF41 | Service Manual - Page 32
    ELECTRICAL REPLACEMENT PARTS LIST Location NO. ! R001 ! R410 ! R411 R416 ! R418 ! R422 ! R423 ! R426 ! R431 ! R434 ! R435 ! R436 ! R438 ! R439 ! R441 ! R500 ! R501 ! R505 ! R517 ! R521 ! R522 ! R542 !
  • Toshiba 20AF41 | Service Manual - Page 33
    ELECTRICAL REPLACEMENT PARTS LIST Location NO. D402 D404 ! D405 ! D406 ! D407 ! D408 ! D409 ! D411 ! D412 ! D501 ! D502 ! D503 ! D504 ! D505 ! D506 D507 D508 ! D510 D511 ! D512 D513 ! D514
  • Toshiba 20AF41 | Service Manual - Page 34
    ELECTRICAL REPLACEMENT PARTS LIST Location NO. TSB P/N Reference NO. TRANSISTORS Description Q204 AD300030 T83A028140 TRANSISTOR,SILICON 2SC2814(F3,F4)-T Q351 BZ510022 TNYJJ05001 COMPOUND TRANSISTOR DTC114TKAT146 Q401 BZ510034 TA5T010154
  • Toshiba 20AF41 | Service Manual - Page 35
    ELECTRICAL REPLACEMENT PARTS LIST Location NO. HOLDER,FUSE 06710T0006 HOLDER,FUSE 077Q014003 REMOTE RECEIVER 0560V20115 RELAY 070W457001 SPEAKER 070W457001 SAF45MFX220ZR EFCT4R5MW5 173979-6 TID-X04P-Z1 B06B-DVS-L THL-P03P-B1 TV-50P-02-A1 005P-2100 005P-2100 52147-0610 52147-0710 TS-
  • Toshiba 20AF41 | Service Manual - Page 36
    ELECTRICAL REPLACEMENT PARTS LIST Location NO. ! TH501 TM101 ! TU001 ! V801 X101 X601 TSB P/N AD300068 AD300091 AD300124 AD300089 AD300088 BZ613004 Reference NO. MISCELLANEOUS DF40B3R0Q0 DEGAUSS ELEMENT 07660DU010 TRANSMITTER 0145W00052 TUNER,VHF-UHF 098W200487 CRT W/DY 1002T00802
  • Toshiba 20AF41 | Service Manual - Page 37
    TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN
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TOSHIBA
FILE NO.050-200101
SERVICE MANUAL
COLOR TELEVISION
20AF41
DOCUMENT CREATED IN JAPAN, DEC., 2001