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Toshiba 28Z13B Service Manual

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FILE NO. 030-200107
SERVICE MANUAL

COLOUR TELEVISION

Z13B Chassis
28Z13B , 28Z13G
PRINTED IN JAPAN Jun., 2001 T

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Summary of Contents for Toshiba 28Z13B

  • Page 1: Colour Television

    FILE NO. 030-200107 SERVICE MANUAL COLOUR TELEVISION Z13B Chassis 28Z13B , 28Z13G PRINTED IN JAPAN Jun., 2001 T...

  • 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 ADJUSTMENTS ..........................10 CIRCUIT CHECK ..............................17 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................18 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 hazard- 2. The only source of X-RAY RADIATION in this TV receiver ous 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 THIS 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 CONVERGENCE ADJUSTMENTS CIRCUMFERENCE CONVERGENCE ADJUSTMENT NOTE: Before attempting any convergence adjustments, the 1. Loosen the clamping screw of deflection yoke slightly to receiver should be operated for at least fifteen min- allow the yoke to tilt. utes. 2. Temporarily put a wedge as shown in figure 1. (Do not remove cover paper on adhesive part of the wedge.) CENTER CONVERGENCE ADJUSTMENT 3.

  • Page 6: 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 Mute or (Service mode display) 2.
  • 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 18) 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. Indicated color of mode now selected : Green and Red Indicated color of other modes : White...

  • Page 9: Design Mode

    DESIGN MODE 1. ENTERING TO DESIGN MODE 1) Select the Service mode. 2) While pressing o or CALL 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”, “OPT1”...

  • Page 10: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 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 WHITE BALANCE 1. Set Contrast to 40, and brightness to +20 by picture control. ADJUSTMENT 2. Receive the Black and White pattern. 3. Select RCUT, GCUT and BCUT with CHANNEL s, t buttons, to set individual • CUTOFF ADJUSTMENT values to Initial reference data, and to set GDRV and BDRV to Initial reference (RCUT)
  • Page 12 (Reference Factory Adjustments) – 12 –...
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  • Page 17: Circuit Check

    CIRCUIT CHECK 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 second anode of the picture tube. 2. Turn on the receiver. Set the BRIGHTNESS and CONTRAST controls to minimum (zero beam current). 3.

  • Page 18: Chapter 2 Specific Informations

    CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 28” HIGH VOLTAGE AT ZERO BEAM: 31.9 kV MAX HIGH VOLTAGE: 34.0 kV AC VOLTAGE 220~240 V Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Adjustment Reference data Item Adjustment...

  • Page 19: Location Of Controls

    LOCATION OF CONTROLS Front MENU EXIT VIDEO L/MONO AUDIO HEAD PHONE MAIN SWITCH MENU POWER INDICATOR VOLUME DOWN ON-TIMER INDICATOR VOLUME UP VIDEO-3 POSITION DOWN POSITION UP EXIT Rear terminals VIDEO-1 (21PINS FULL) AERIAL TERMINAL AUDIO OUT (FIXED) VIDEO-2 (21PINS S-VIDEO/AV) –...
  • Page 20 Remote Controller DISPLAY CALL/INDEX (TEXT) MUTE Çi F/VTR CALL VCR CONTROL SELECTION ON/STAND-BY POSITION NUMBER KEYS TEN KEYS -/-- POSITION SELECT VIDEO INPUT SINGLE DIGIT/DOUBLE DIGIT FLOF KEYS TEXT TEXT MODE PICTURE MENU SELECT OPTION ENTER – VOLUME/ADJUST LEVEL POSITION UP/DOWN SELECT MENU OPTION MENU EXIT...

  • Page 21: Circuit Block Diagram

    – 21 –...

  • Page 22: 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. Models : 28Z13B, 28Z13G Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 23 Location Location Part No. Description Part No. Description PF, 4300pF, ±3%, 1800V EL, 4.7?F, ±20%, 50V C444 24082607 C648 24797479 EL, 4.7?F, ±20%, 50V C445 24828473 PF, 0.047?F, 200V C649 24797479 EL, 33?F, ±20%, 250V EL, 33?F, ±20%, 50V C446 24679330 C669 24797330...
  • Page 24 Location Location Part No. Description Part No. Description CA03 24503041 PF, 0.1?F, 63V CV11 24232103 CD, 0.01?F, +80%, -20% EL, 10?F, ±20%, 16V CA04 24232103 CD, 0.01?F, +80%, -20% CV12 24794100 CD, 100pF, ±10% EL, 1?F, ±20%, 50V CA05 24212101 CV13 24797010 EL, 10?F, ±20%, 16V...
  • Page 25 Location Location Part No. Description Part No. Description R314 24366102 CF, 1k ohm R438 24366103 CF, 10k ohm R316 24366394 CF, 390k ohm R439 24366102 CF, 1k ohm R318 24366101 CF, 100 ohm R441 24382222 OMF, 2200 ohm, 1W R319 24366101 CF, 100 ohm R442...
  • Page 26 Location Location Part No. Description Part No. Description R602 24366103 CF, 10k ohm R819 24310829 MF, 8.2 ohm, 1/2W R603 24366103 CF, 10k ohm R821 24366101 CF, 100 ohm R612 24366681 CF, 680 ohm R822 24552103 OMF, 10k ohm, 1/2W R613 24366681 CF, 680 ohm...
  • Page 27 Location Location Part No. Description Part No. Description RA02 24366102 CF, 1k ohm RB35 24366102 CF, 1k ohm RA03 24366102 CF, 1k ohm RB36 24366102 CF, 1k ohm RA04 24366102 CF, 1k ohm RB37 24366221 CF, 220 ohm RA05 24366103 CF, 10k ohm RB38 24366331...
  • Page 28 Coil, Peaking, TRF4100AT Q107 A6708871 Transistor, 2SC388ATM L161 23262298 Coil, IF, TRF1245AV (28Z13G) Q130 23314794 Transistor, 2PC1815Y (28Z13G) L161 23262300 Coil, IF, TRF1246AV (28Z13B) Q131 23314794 Transistor, 2PC1815Y L183 23289120 Coil, Peaking, TRF4120AF Q132 23314791 Transistor, 2PA1015Y L301 23103859 Coil (Ferrite Bead), TEM2011...
  • Page 29 Location Location Part No. Description Part No. Description Q472 23314794 Transistor, 2PC1815Y QB30 23314791 Transistor, 2PA1015Y Q472 23314794 Transistor, 2PC1815Y QF01 23314794 Transistor, 2PC1815Y Q473 23314791 Transistor, 2PA1015Y QR02 A6734590 Transistor, 2SC752(G)TM-Y Q490 23314794 Transistor, 2PC1815Y QR03 23314794 Transistor, 2PC1815Y Q491 23314794 Transistor, 2PC1815Y...
  • Page 30 Diode, 1SS110, TE (28Z13G) D705 23115599 Diode, 1N4148 G131 24366221 CF, 220 ohm (28Z13G) D715 23115599 Diode, 1N4148 G131 24366271 CF, 270 ohm (28Z13B) D721 23115599 Diode, 1N4148 G299 24366103 CF, 10k ohm D801 23357041 Diode, LN6SB60-F05 G309 23118479 Diode, BYD33J...
  • Page 31 PICTURE TUBE PICTURE TUBE PICTURE TUBE * V901 23312916 Picture Tube, W56QDE891X824 TUNER TUNER TUNER TUNER TUNER H001 23321413 Tuner, TEDB7-205A (28Z13B) H001 23321370 Tuner, EGA51L (28Z13G) ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES Y101 23565270 Owner’s Manual, English, 28Z13B Y101 23565287 Owner’s Manual, English,...
  • Page 32 THIS PAGE IS INTENTIONALLY LEFT BLANK. – 32 –...

  • Page 33: Pc Boards Bottom View

    SIGNAL BOARD PD0015 BOTTOM (FOIL) SIDE – 33 – – 34 –...
  • Page 34 POWER/DEF BOARD PD0016 BOTTOM (FOIL) SIDE – 35 – – 36 –...
  • Page 35 CONT-1 BOARD PD0017-1 CONT-2 BOARD PD0017-2 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE – 37 – – 38 –...

  • Page 36: Terminal View Of Transistors

    CRT-D/DSM BOARD PD0014 TERMINAL VIEW OF TRANSISTORS BOTTOM (FOIL) SIDE 2SC3852 2SD2253 2SC752GTM 2SC752 2SA1788 (old) 2SD1763A 2SC2482 2SA562TM 2SC5243 2SC1569 2SC2655 2SA1015 2SC5570 2SC4544 2SC1815 2SC4721P 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 RN2203 2SD1554 ON4409 2SD2253 RN2201 RN2004 2SD1556 RN1203 2SC5143...
  • Page 37 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 41 –...
  • Page 38 MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 42 –...

  • Page 39: Specifications

    SPECIFICATIONS (Representative: 28Z13B) Input Power Rating: AC 220 ~ 240 Volts Aerial Input Impedance: 75 ohm unbalanced type for VHF, UHF and CATV Receiving Channels: System Channel CATV PAL I 21 ~ 69 PAL, /60 Hz (For Video Disk play back) 4.43 NTSC (For VCR playback), 3.58 NTSC (For VCR playback)
  • Page 40 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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