Related Manuals for Toshiba 28Z33B
Summary of Contents for Toshiba 28Z33B
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Page 1: Service Manual
FILE NO. 030-200314 SERVICE MANUAL Colour television Z33 Chassis 28Z33B/32Z33B Published in Japan Dec. 2003 (YC) -
Page 2: Table Of Contents
TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 SET-UP ADJUSTMENT ............................4 SERVICE MODE ..............................8 DESIGN MODE ..............................11 ELECTRICAL ADJUSTMENTS ..........................12 CIRCUIT CHECK ..............................14 CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA ..........................15 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 PRE- CAUTION” 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 ous X-RAY RADIATION. -
Page 4: Set-Up 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. 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 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 (FOR FLAT TUBE) 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 7 (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...
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Page 8: Service Mode
SERVICE MODE 1. ENTERING TO SERVICE MODE 3) While pressing the o button, 2) Press o button again to 1) Press o button once on keep pressing. press MENU button on TV set. Remote Control. Item Data Mute or (Service mode display) 2. - Page 9 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 15) 5.
- Page 10 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...
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Page 11: 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 12: 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 13 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)
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Page 14: 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 15: Chapter 2 Specific Informations
CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 32" 28" HIGH VOLTAGE AT ZERO BEAM: 31.7 kV 31.4 kV MAX HIGH VOLTAGE: 35.0 kV 33.0 kV AC VOLTAGE 220~240 V Table-1 SERVICE MODE ADJUSTING ITEMS AND DATAS IN THE SERVICE MODE: Item Item Adjustment... -
Page 16: Location Of Controls
LOCATION OF CONTROLS Front REMOTE SENSOR POSITION UP POSITION DOWN VIDEO-3 VOLUME UP HEAD PHONE VOLUME DOWN MENU POWER INDICATOR (RED) Rear terminals AERIAL TERMINAL VIDEO-2 (21PIN S-VIDEO/AV) VIDEO-1 (21PIN S-VIDEO/AV) – 16 –... - Page 17 Remote Controller DISPLAY TELETEXT MUTE DISPLAY CALL/INDEX (TELETEXT) POWER-ON/STANDBY DISPLAY SIZE HOLD A WANTED PAGE REVEAL CONCEALED TEXT SELECT A PAGE NUMBER BUTTONS PREVIOUS PROGRAMME VIDEO INPUT SELECT TELETEX CONTROL BUTTONS ON-SCREEN MENU EXIT MENU SELECT MENU VOLUME LEVEL UP/DOWN POSITION/TELETEXT PAGE UP/DOWN (NOT USED FOR THIS MODEL)
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Page 18: 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 : 28Z33B/32Z33B Capacitors ..... CD : Ceramic Disk PF : Plastic Film EL : Electrolytic Resistors .... - Page 19 Location Parts No. Descriptiopn Location Parts No. Descriptiopn C512 24100104 CERAMIC CHIP, 25V F 0.1UF Z C931 24214101 CERAMIC DISC, 500V B 100PF K C513 24100104 CERAMIC CHIP, 25V F 0.1UF Z C4401 24109153 CERAMIC CHIP, 50V B 0.015UF K C514 24794101 ELECTROLYTIC, 16V 100UF M C4402...
- Page 20 Location Parts No. Descriptiopn Location Parts No. Descriptiopn RESISTORS R375 24011223 CHIP, METAL FILM, 1/20W 22K OHM J R101 24553223 OXIDE METAL FILM, 1W 22K OHM J R376 24011104 CHIP, METAL FILM, 1/20W 100K OHM J R102 24011103 CHIP, METAL FILM, 1/20W 10K OHM J R377 24011563 CHIP, METAL FILM, 1/20W 56K OHM J R103...
- Page 21 Location Parts No. Descriptiopn Location Parts No. Descriptiopn R818 24019463 METAL PLATE RK99 2W R22 J RA05 24011103 CHIP, METAL FILM, 1/20W 10K OHM J R819 24310829 OXIDE METAL FILM, 1/2W 8.2 OHM J RA06 24011102 CHIP, METAL FILM, 1/20W 1K OHM J R822 24552103 OXIDE METAL FILM, 1/2W 10K OHM J RA07...
- Page 22 Location Parts No. Descriptiopn Location Parts No. Descriptiopn RR13 24011151 CHIP, METAL FILM, 1/20W 150 OHM J L894 23289840 COIL, PEAKING, TRF4100AT RR14 24011151 CHIP, METAL FILM, 1/20W 150 OHM J L901 #1 23200546 COIL, DG, TSB-2397AL RR15 24011151 CHIP, METAL FILM, 1/20W 150 OHM J #2 23200554 COIL, DG 0.50CU 60T-2LOOP TSB-2414AL RS03 24011562 CHIP, METAL FILM, 1/20W 5.6K OHM J...
- Page 23 Location Parts No. Descriptiopn Location Parts No. Descriptiopn Q827 23000352 IC, SE125N, LF4 D805 23357012 DIODE, 1SS244 Q840 23009188 IC, KIA7805API D806 23357366 DIODE, FR105-B5 Q841 23314965 TRANSISTOR, KTC3198 Y D807 23357325 DIODE, ZV=30.32-31.88 DZ33 BS B Q842 23314965 TRANSISTOR, KTC3198 Y D809 23357273 DIODE, ZENER, DZ6.8 BS B Q861...
- Page 24 Location Parts No. Descriptiopn Location Parts No. Descriptiopn H002 23148767 MODULE, NICAM/IGR MPSE22A #2 23445725 KNOB, POWER BUTTON JP106 #1 24000524 METAL FILM 1/4W 4.3K F A241 70368125 PUSH CATCH P515A 23368581 CONNECTOR, PLUG 7P, 2.5MM G JST-EH B7B-EH-F1-TV4 A242 #1 23428087 DOOR, DOOR PROPER P515B 23368581 CONNECTOR, PLUG 7P, 2.5MM G JST-EH B7B-EH-F1-TV4...
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Page 25: Pc Boards Top & Bottom View
SIGNAL BOARD PD1385A (28Z33B) SIGNAL BOARD PD1385B (32Z33B) TOP (COMPONENT) SIDE CAUTION BB22A BB21A LIVE AREA Z420 JP171 Q420 D490 F801 C420 Q861 P821A R490 T4A L/250V T801 D436 R425 C421 JP204 JP205 R426 Q421 JP148 JP237 JP119 JP147 JP127... - Page 26 SIGNAL BOARD PD1385A (28Z33B) SIGNAL BOARD PD1385B (32Z33B) BOTTOM (FOIL) SIDE BB21A BB22A T801 Z420 F801 T4A L/250V Q861A C420 Q861 D490 R490 D436 CAUTION LIVE AREA C421 R426 Q376 Q377 Q421 Q376 Q377 RS08 RS08 P515A LC02 RC02 QA13...
- Page 27 POWER & DEF/CRT-D BOARD PD1386A-1/A-2 (28Z33B) POWER & DEF/CRT-D BOARD PD1386A-1/A-2 (28Z33B) POWER & DEF/CRT-D BOARD PD1386B-1/B-2 (32Z33B) POWER & DEF/CRT-D BOARD PD1386B-1/B-2 (32Z33B) TOP (COMPONENT) SIDE BOTTOM (FOIL) SIDE R914 R905 P902B R905 Q901 R914 L903 Q901 L903 C914 C904...
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- Page 29 TERMINAL VIEW OF TRANSISTORS 2SD2253 2SC3852 2SC752GTM 2SC752 2SA1788 (old) 2SD1763A 2SA562TM 2SC2482 2SC1569 2SC5243 2SC2655 2SA1015 2SC5570 2SC4544 2SC4721P 2SC1815 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 ON4409 RN2203 2SD1554 RN2201 2SD2253 2SD1556 RN2004 RN1203 2SC5143 RN1204 2SD2553 RN2204 RN1205 RN1202 RN1201...
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Page 31: Schematic Diagram
SCHEMATIC DIAGRAM MODEL : 28Z33B/32Z33B 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 32 – 36 –...
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Page 33: Terminal View Of Transistors
SPECIFICATIONS Broadcast systems/channels PAL-I UHF UK21-UK69 Video Input PAL, SECAM, NTSC 3.58/4.43 External connections EXT1 Input 21-pin Scart RGB, A/V EXT2 Input 21-pin Scart A/V, S-video EXT3 Input (front) Phono jack Video Phono jacks Audio L + R Programme Positions Stereo Nicam 2 carrier system... - Page 34 TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...