Toshiba 32AF44 Service Manual
  1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. TV
  5. 32AF44
  6. Service manual

Toshiba 32AF44 Service Manual

N4ns chassis
Hide thumbs Also See for 32AF44:
Table of Contents

Advertisement

Quick Links

See also: Owner's Manual
FILE NO. 020-200402
SERVICE MANUAL
Color Television
N4NS Chassis
32AF44
32AFX54
DOCUMENT CREATED IN JAPAN, May, 2004

Advertisement

Table of Contents
loading

Related Manuals for Toshiba 32AF44

Summary of Contents for Toshiba 32AF44

  • Page 1 FILE NO. 020-200402 SERVICE MANUAL Color Television N4NS Chassis 32AF44 32AFX54 DOCUMENT CREATED IN JAPAN, May, 2004...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 SET-UP ADJUSTMENT ............................4 SERVICE MODE ..............................6 DESIGN MODE ................................ 9 ELECTRICAL ADJUSTMENT ..........................10 CIRCUIT CHECKS ..............................12 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................13 LOCATION OF CONTROLS ...........................

  • 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 hazardous 2. This receiver is equipped with a Fail Safe (FS) circuit which X-RAY RADIATION.

  • Page 4: Set-Up Adjustment

    WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU- TION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF SERVICE MANUAL. SET-UP ADJUSTMENT ■ The following adjustments should be made when a complete realignment is required or a new picture tube is installed. Perform the adjustments in order as follows : 1.
  • Page 5 (5) Adjust the sub-4-pole magnets only in case there is any deviation of Xv bow-shaped convergence. (To be usually set at the initial position) Align both sides with the sub-4-pole magnets and minimize the deviation of blue and red with the main 4-pole magnets. Xv bow-shaped deviation of convergence red/blue blue...

  • Page 6: Service Mode

    SERVICE MODE 1. ENTERING TO SERVICE MODE 3) While pressing the MUTE button, 1) Press MUTE button once 2) Press 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 7 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 13) 5.
  • Page 8 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. SELF CHECK NO.

  • Page 9: Design Mode

    DESIGN MODE 1. ENTERING TO DESIGN MODE 1) Select the Service mode. 2) While pressing RECALL button on 3) Press MENU button on TV. Remote and press MENU button on TV. Item Press Data Press (Design mode) (Adjustment mode) When QA02 is initialized, items “OPT0” and “OPT1” and "OPT2" of DESIGN MODE are set to the data of the representative model of this chassis family.

  • Page 10: Electrical Adjustment

    ELECTRICAL ADJUSTMENT ITEM ADJUSTMENT PROCEDURE FOCUS VR ADJ 1. Enter the service mode, then select any register item. 2. Press the TV/VIDEO button on the Remote until the black cross-bar pattern ap- pears on the screen. 3. Adjust the FOCUS control (on T461) for well defined scanning lines on the picture screen.
  • Page 11 ITEM ADJUSTMENT PROCEDURE HORIZONTAL POSITION 1. Call up the adjustment mode display, then select the item HPOS or VPOS. (HPOS) 2. Press the TV/VIDEO button on Remote until the VERTICAL POSITION white cross-bar or black cross-bar pattern appears (VPOS) on the screen. 3.

  • Page 12: Circuit Checks

    CIRCUIT CHECKS HIGH VOLTAGE CHECK Troubleshooting Guide for Fail Safe Circuit CAUTION: There is no HIGH VOLTAGE ADJUSTMENT on this chassis. Checking should be done following the steps Check that the set returns to normal operation when pin 12 below. of Z801(or emitter of Q472) is grounded with jumper wire.

  • Page 13: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 32" HIGH VOLTAGE AT ZERO BEAM: 32.7kV MAX HIGH VOLTAGE: 34.1kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Name of adjustment Preset Data Item Name of adjustment Preset Data ←...

  • Page 14: Location Of Controls

    LOCATION OF CONTROLS (Representative:32AF44) Front View MENU VIDEO 3 A/V IN VOLUME zy (with optional S-video) TV front CHANNEL zy DEMO MENU TV/VIDEO VOLUME CHANNEL VIDEO-3 IN S-VIDEO VIDEO L/MONO-AUDIO-R x •zy POWER DEMO Remote sensor TV/VIDEO POWER indicator Rear Term...
  • Page 15 Remote Control TV/VIDEO [21] POWER RECALL [40] Channel numbers [20] CH RTN (channel return) [23] PIC SIZE [22] SLEEP [40] MENU [18] st T S [18] FAV ts (favorite channels) [23] Access channels programmed into EXIT [18] the Favorite Channel memory only. CHANNEL st [20] VOLUME st Access channels programmed...

  • Page 16: Programming Channel Memory

    PROGRAMMING CHANNEL MEMORY When you press CHANNEL y or z on the remote control or TV front panel, your TV will stop only on the channels stored in the channel memory. Follow the steps below and on the next page to program channels into the channel memory.

  • Page 17: 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 : 32AF44/32AFX54 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 18 Location Location Parts No. Description Parts No. Description C504 24591222 PLASTIC FILM, 50V 2200PF J C902 24092353 CERAMIC DISC, 2KV 4700PF K C505 24105130 CERAMIC CHIP, 50V CH 13PF J C904 24436331 CERAMIC DISC, 50V SL 330PF J C510 24109103 CERAMIC CHIP, 50V B 0.01UF K C905 24436331...
  • Page 19 Location Location Parts No. Description Parts No. Description CD62 24797479 ELECTROLYTIC, 50V 4.7UF M CR02 24100104 CERAMIC CHIP, 25V F 0.1UF Z CD63 24109333 CERAMIC CHIP CK73B 25V 33000PFK CR03 24100104 CERAMIC CHIP, 25V F 0.1UF Z CD64 24109332 CERAMIC CHIP, 50V B 3300PF K CS02 24797229 ELECTROLYTIC, 50V 2.2UF M...
  • Page 20 Location Location Parts No. Description Parts No. Description CZ28 #1 24109103 CERAMIC CHIP, 50V B 0.01UF K R216 24366223 CARBON FILM, 1/6W 22K OHM J CZ29 #1 24109103 CERAMIC CHIP, 50V B 0.01UF K R219 24366223 CARBON FILM, 1/6W 22K OHM J CZ30 #1 24794100 ELECTROLYTIC, 16V 10UF M R227...
  • Page 21 Location Location Parts No. Description Parts No. Description R464 24366103 CARBON FILM, 1/6W 10K OHM J R744 24366122 CARBON FILM, 1/6W 1.2K OHM J R466 24366103 CARBON FILM, 1/6W 10K OHM J R745 24366122 CARBON FILM, 1/6W 1.2K OHM J R472 24381270 OXIDE METAL FILM, 1/2W 27 OHM J...
  • Page 22 Location Location Parts No. Description Parts No. Description R964 24383153 OXIDE METAL FILM, 2W 15K OHM J RA35 24011102 CHIP, METAL FILM, 1/20W 1K OHM J R965 24383153 OXIDE METAL FILM, 2W 15K OHM J RA36 24011103 CHIP, METAL FILM, 1/20W 10K OHM J R973 24366472 CARBON FILM, 1/6W 4.7K OHM J...
  • Page 23 Location Location Parts No. Description Parts No. Description RG25 24011101 CHIP, METAL FILM, 1/20W 100 OHM J RS71 24011104 CHIP, METAL FILM, 1/20W 100K OHM J RG26 24011104 CHIP, METAL FILM, 1/20W 100K OHM J RS101 24011123 CHIP, METAL FILM, 1/20W 12K OHM J RG27 24011101 CHIP, METAL FILM, 1/20W 100 OHM J...
  • Page 24 Location Location Parts No. Description Parts No. Description RZ370 #2 24000445 CHIP JUMPER, 1608TYPE LZ04 #1 23103880 COIL, CHOKE, TEM2011Y RZ380 #2 24011103 CHIP, METAL FILM, 1/20W 10K OHM J LZ05 #1 23238714 COIL, PEAKING, TRF4100AJ RZ400 #2 24000445 CHIP JUMPER, 1608TYPE LZ06 #1 23103906 FILTER, CHIP BEAD INDUCTOR, TEM2118AS RZ410 #2 24011562...
  • Page 25 Location Location Parts No. Description Parts No. Description Q840 23009440 IC, REGULATOR +5V 4% DIP8 NJM78LR05BD QZ030 #2 23000282 IC, R1121N*, 23000282L NI TOUITSU Q843 23114459 TRANSISTOR, RN1205 QZ210 23314475 TRANSISTOR, 2SC2712-Y QZ220 23314475 TRANSISTOR, 2SC2712-Y Q862 23009270 IC, PHOTO COUPLER, PS2581L1(D) Q883 23319692 IC, SE130N, LF4...
  • Page 26 Location Location Parts No. Description Parts No. Description D905 23118859 DIODE, 1SS133 GR01 24011470 CHIP, METAL FILM, 1/20W 47 OHM J D906 23118859 DIODE, 1SS133 GR02 24011101 CHIP, METAL FILM, 1/20W 100 OHM J D907 23118859 DIODE, 1SS133 GR03 24011101 CHIP, METAL FILM, 1/20W 100 OHM J D908 23118859...
  • Page 27 PC BOARD ASSEMBLIES U001 23762128 PC BOARD ASSY, IF 32AFX54 PD1022A IF U801 #1 23762142 PC BOARD ASSY, MAIN 32AF44 PD1765A MAIN #2 23762051 PC BOARD ASSY, MAIN 32AFX54 PD1765 MAIN U901 #1 23762145 PC BOARD ASSY, CRT/D 32AF44 PD1764A CRT/D...

  • Page 28: Pc Boards Bottom View

    MAIN BOARD (32AF44:PD1765A 32AFX54:PD1765) (U801) BOTTOM (FOIL) SIDE 6 5 4 3 2 1 P492 ABL-SW +5V-2 VSYNC JR007 BB01A Q220 JR007 BB02A BB04A BB03A GJ83 P491 R219 JR019 JR019 GJ84 C271 C271 T802 JR006 T801 LV98 X401 Q203 X501...
  • Page 29 SUB BOARD (32AF44:PD1766A 32AFX54:PD1766) (U902) BOTTOM (FOIL) SIDE RS71 QS62 RS66 JR040 RS67 RS66 RZ660 RZ720 CZ22 CZ25 CA44 CA42 CS72 CV60 JR040 BB05B JR033 JR034 CZ15 RB47 RZ680 JR032 CZ24 JR033 CZ15 V3SW QS64 RB47 RZ670 JR032 CZ14 LA01...
  • Page 30 FRONT1 BOARD (32AF44:PD1787A-1 32AFX54:PD1787-1 ) (UA01A) BOTTOM (FOIL) SIDE DB01A CH DN CH UP SA02 SA01 RB03 DEMO MENU VIDEO VOL DN POWER SA06 SA07 SA08 SA04 SA05 RA71 RA72 DB03 DB01 RB12 QB11 TCI-A7S 23547629 - 32 - - 33 -...
  • Page 31 FRONT2 BOARD (32AF44:PD1787A-2 32AFX54:PD1787-2 ) (UA01B) BOTTOM (FOIL) SIDE 23547629 TCI-A7S RD43 CD51 RD45 DD41 DD42 RD79 RD42 CD49 RD79 RD47 CD44 RS107 RS101 GRS92 QD41 CD43 CD54 RS109 CD60 RS109 QD41 CD90 RS101 QD83 RD81 CD61 CD62 RD81 RS105...
  • Page 32 CRT/D BOARD (32AF44:PD1764A 32AFX54:PD1764) (U901) BOTTOM (FOIL) SIDE Q907 Q906 Q706 Q921 Q920 R930 D975 R952 P902 L910 R937 R939 R722 D909 C704 R945 C921 C905 R724 C913 R979 R922 R940 C722 R955 R912 C972 C904 D906 R901 C970 R980...

  • Page 33: Terminal View Of Transistors

    TERMINAL VIEW OF TRANSISTORS 2SD2253 2SC3852 2SC752GTM 2SC752 2SA1788 (old) 2SD1763A 2SA562TM 2SC2482 2SC5243 2SC1569 2SC2655 2SA1015 2SC4544 2SC1815 2SC4721P 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 2SD1554 ON4409 RN2203 RN2201 2SD2253 RN2004 2SD1556 RN1203 2SD2553 RN1204 2SC5143 RN2204 RN1205 RN1202 RN1201 - 38 -...

  • Page 34: Schematic Diagram

    SCHEMATIC DIAGRAM MODEL : 32AF44/32AFX54 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 35 - 40 -...

  • Page 36: Specifications

    Hyper band (AA through ZZ, AAA, BBB) Ultra band (65 through 94, 100 through 125) Power Source 120 V AC, 60 Hz Power Consumption 32AF44: 106 W (average) 32AFX54:107W (average) Audio Power 5 W + 5 W Speaker Type Two 2-3/8...
  • Page 37 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

This manual is also suitable for:

32afx54

Table of Contents