Table of Contents
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SERVICE MANUAL
1、 Caution.................................................................................2
2、 Specification...........................................................................6
3、 Alignment Procedure......... ...................................................... 8
4、 Block Diagram............... ................................................... ... 13
5、 Circuit Theory Introduction........................ ..............................14
6、 Troubleshooting ......... ............ ............... ............ ...............16
7、 Schematic Diagram ........................... ....................................18
8、 Main IC Introduction............ ...... ..........................................20
9、 BOM list........................ ......................................................30
This manual is the latest at the time of printing, and does not
include the modification which may be made after the printing, by
the constant improvement of product
TCL
CRT CHASSIS SY33
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Summary of Contents for TCL SY33
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Page 1: Service Manual
SERVICE MANUAL CRT CHASSIS SY33 1、 Caution………………………………………………………………………2 2、 Specification…………………………………………………………………6 3、 Alignment Procedure……… ……………………………………………… 8 4、 Block Diagram…………… …………………………………………… … 13 5、 Circuit Theory Introduction…………………… …………………………14 6、 Troubleshooting ……… ………… …………… ………… ……………16 7、 Schematic Diagram ……………………… ………………………………18 8、 Main IC Introduction………… …… ……………………………………20 9、... -
Page 2: Caution
1、 CAUTION: Use of controls, adjustments or procedures other than those specified herein may result in hazardous radiation exposure. CA UTION: TO REDUCE THE RISK OF CAUTION ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE RISK RISK OF OF ELECTRI ELECTRIC C PARTS INSIDE. -
Page 3: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS CAUTION: Read all of these instructions. Save these instructions for later use. Follow all Warnings and Instructions marked on the audio equipment. 1. Read Instructions- All the safety and operating instructions should be read before the product is operated. 2. - Page 4 PROTECTION AND LOCATION OF YOUR SET Do not use this television set near water ... for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, etc. Never expose the set to rain or water. If the set has been exposed to rain or water, unplug the set from the wall outlet and refer servicing to qualified service personnel.
- Page 5 OPERATION OF YOUR SET 18. This television set should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply at your home, consult your television dealer or local power company. For television sets designed to operate from battery power, refer to the operating instructions.
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Page 6: Specification
2、Specification Chassis SY33 SY33 Target Market S.America APAC/Russia matching CRT size 21" 21" Slim CRT √ √ PAL(BG DK I) ★√ Color System PAL(M N) √ (TV) SECAM ★√ NTSC √ ★√ ★√ Sound System ★√ (TV) √ √ Global NICAM... - Page 7 YPbPr ★√ ★√ HDMI (1)English/Russian/Arabic; Language English/Portuguese/French/ Spanish (2)English/Vietnamese/Thai；★ Thai Bilingual digital module DVB-T / ATSC...
- Page 8 3、Alignment Procedure Method for Entering Factory Mode： a. Production mode: Press the key [Fac] in remote control to enter or exit factory mode(But only display 4 pages); b. Engineer mode: Press key [DISPLAY] to display channel information（Setup for display picture on bottom left of screen, press the number key [6][1][5][8] ;...
- Page 9 H-BLK L 0…7 H-BLK R 0…7 H-SIZE 0…63 H.SIZE COMP/50 0…7 TRAPE/50 0…63 PARABOLAO/50 0…63 U.CORNER TOP/50 0…15 U.CORNER BTM/50,60 0…15 *** PAGE 2 ****** Init Range H.PHASE/60 0…31 H-BLK L 0…7 H-BLK R 0…7 H-SIZE 0…63 H.SIZE COMP/60 0…7 TRAPE/60 0…63 PARABOLAO/60...
- Page 10 OPT-SVIDEO NO/YES OPT-DVD NO/YES OPT-AV3 NO/YES AMERICA USA/ （N/S） TUNE-SPEED 0…3 CH6 BAND *** PAGE 6 ****** Init Range OSD THEME 0…7 OPT-LOGO HALF TONE 0…3 *** PAGE 7 ***CHROMA Init Range COL-AUTO ON/OFF COL-NTSC ON/OFF COL-PAL/M ON/OFF COL-PAL/N ON/OFF C.TRAP ADJ/PAL 0…7 C.TRAP ADJ/NTSC...
- Page 11 *** PAGE 11 ***PIC. Init Range 0…3 BLK.STR.START BLK.STR.GAIN 0…3 *** PAGE 12 ***PIC. Init Range BRT.ABL.DEF MID.STP.DEF BRT.ABL.TH 0…7 CORING GAIN 0…3 WPL OPE.POINT 0…3 Y GAMMA 0…3 0…3 DC.REST COL.KILLER OPE. 0…7 RGB TEMP SW *** PAGE 13 ***PIC. Init Range SH ADJUST...
- Page 12 OPT-ABL.P OFF/ON ABL-LOW LIMIT 0…63 *** PAGE 16 ***IF Init Range OVER.MOD.SW OFF/ON OVER.MOD.LEVEL 0…15 PRE-SHOOT ADJ 0…3 OVER-SHOOT ADJ 0…3 VIDEO LEVEL 0…7 VIDEO.LVL.OFFSET 0…3 S.TRAP ADJ 0…7 IF VCO ADJ 0…3...
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Page 13: Block Diagram
4、Block Diagram Antenna IR1001 Key Board MUTE STB BY Z101 Tuner Q101 LBN3 Preamplifier Q502/Q504/ Q506 Video Preamplifier IC201 C BUS IC001 LA76933 24C16 EEPROM IFamplifier/ Video detection IC301 V SCAN /Sound detectionj/ Y&C LA78041 FOCUS S Video Y Separation/ Color decode/ V-amplifier H SCAN SCREEN... - Page 14 5、Circuit Flow Introduction 1)、Chassis summarize The main chip of SY33 chassis adopt IC LA76933 of SANYO company ,audio power amplifier adopts IC LA42352,power supply adopts IC STRW6553, and vertical scan amplifier adopts IC LA78041.The chassis has low cost and steady function, it has been adopts for 25M63,21M63 model.
- Page 15 Video signal of AV2 from pin4of P901 is sent to pin54 of IC201 to decode process. Sound signals of AV2 from pin5 and pin6 of P901 is sent to pin1 and pin 12 to choose signal,.After being choosed, the signal flow same as TV sound. 3) High-Definition signal flow.
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Page 16: Troubleshooting
6、Troubleshooting LED ok,No Picture, No sound Check if 112V is short Replace Q402 to ground? Check if 18V is short Replace IC601 to ground? Check which branch Check IC201 power short to ground and supply +5V ok? repairing Check waveform of Replace X001 X001ok? The waveform of... - Page 17 No LED,No Picture Check Q815, 300V ok? IC801 ambient parts Check D801-D804, F801 ok? RT801,C806 Replace Check Replace D801-d804,Q815 No Sound,Picture ok Check which channel AV no sound TV no sound no sound Check pin5 Replace IC901 IC 901sound output ok? IC201 or repairing the output ok?
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Page 18: Schematic Diagram
7ÿSchematic Diagram... -
Page 19: Main Ic Introduction
LA76933 7X(X:J∼N)/LA76933 7FB Tentative 8ÿMain IC Introduction 内部結線 LA76933 Pin Assignment Internal connections FUNCTION FUNCTION FUNCTION PAD Name μCOM SIF Output VIF Input1 VIF AGC VIF Input2 PInt01 C_Sync PSYNC SIF Input IF Ground PInt02 CLOCK FM Filter RF AGC Output PInt03 DATA 5 FM Output / Selected Audio... - Page 21 2ÿ TEA1506 TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT FEATURES APPLICATIONS Besides typical application areas, i.e. TV and monitor Distinctive features supplies, the device can be used in adapters and chargers • Universal mains supply operation (70 to 276 V AC) and all applications that demand an efficient and •...
- Page 22 This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in _white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.
- Page 23 Philips Semiconductors Product specification TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT PINNING SYMBOL DESCRIPTION DIP8 SO14 supply voltage ground CTRL control input input from auxiliary winding for demagnetization timing; overvoltage and overpower protection programmable current sense input sense DRIVER gate driver output 12, 13 high voltage safety spacer;...
- Page 24 Philips Semiconductors Product specification TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT FUNCTIONAL DESCRIPTION The TEA1506 is the controller of a compact flyback converter, and is situated at the primary side. An auxiliary MGU233 V sense(max) handbook, halfpage winding of the transformer provides demagnetization detection and powers the IC after start-up.
- Page 25 Philips Semiconductors Product specification TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT Cycle skipping At very low power levels, a cycle skipping mode will be MGU509 activated. A high control voltage will reduce the switching handbook, halfpage (kHz) frequency to a minimum of 25 kHz. If the voltage on the 175 kHz control pin is raised even more, switch-on of the external power MOSFET will be inhibited until the voltage on the...
- Page 26 Philips Semiconductors Product specification TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT Demagnetization Regarding the TEA1506, the IC will not start switching again. Subsequently, V will drop again to the UVLO The system will be in discontinuous conduction mode all level, etc.
- Page 27 Philips Semiconductors Product specification TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT Valley switching lowest drain voltage before starting a new primary stroke. This method is called valley detection. A new cycle starts when the power MOSFET is switched Figure 9 shows the drain voltage together with the valley on (see Fig.9).
- Page 28 Philips Semiconductors Product specification TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT Short winding protection After the leading edge blanking time, the short winding MGU236 protection circuit is activated. If the ‘sense’ voltage handbook, halfpage V sense(max) exceeds the short winding protection voltage V , the 0.52 V converter will stop switching.
- Page 29 Philips Semiconductors Product specification TEA1506P; TEA1506AP; GreenChip™II SMPS control IC TEA1506T; TEA1506AT Control pin protection If pin CTRL is open-circuit or not connected, a fault condition is assumed and the converter will stop switching. handbook, halfpage Operation will recommence as soon as the fault condition is removed.
- Page 30 10、B0M List MATERIAL CONCENTRATIVE BOM PRINT MATERIAL NO.: 03-DM62SAB-SC60S MATERIAL NAME: S21M62Q/CS-SY33-LA Parent Child Description BOM text Unit ASS'Y-REMOTE CONTROL BD 03-DM62SAB-SC60S T6-016W31-A009XZ 1 PC OF ARTEQU REMOTE CONTROLLER T6-016W31-A009XZ 06-016W31-A009X 1 PC RC1663108 03-DM62SAB-SC60S T8-21RFLN-HF4AB ASS'Y - MATCH TUBE 1 PC T8-21RFLN-HF4AB T8-21RFLN-FHF4AB ASS'Y - MATCH TUBE(F.CAB)
- Page 31 Q504;Q502;Q T8-DM62SAB-CRY 11-TC3207-0BX TRANSISTOR KTC3207 3 PC RES. C.F. 100 OHM 1/6W R510;R501;R T8-DM62SAB-CRY 18-CB0101-JNX 3 PC +/-5% RES. C.F. 1.8K OHM 1/6W T8-DM62SAB-CRY 18-CB0182-JNX 1 PC R514 +/-5% RES. C.F. 3.3K OHM 1/6W T8-DM62SAB-CRY 18-CB0332-JNX 2 PC R515;R522 +/-5% R513;R511;R RES.
- Page 32 FELT TAPE T8-DM62SAB-FCN 54-114002-00X 6 PC (360MMX19MMX0.3MM) T8-DM62SAB-FCN 54-205140-000 SPACER CRT MOUNTING T=2MM 4 PC CRT&F.CAB CRT FIBRE SHEET T8-DM62SAB-FCN 54-314740-0X0 12 PC CHASSIN&CRT (22MMX22MMX0.8MM) T8-DM62SAB-FCN 57-389890-000 WIRE MOUNTS 80MMX2.2MM 3 PC BRACKET ABS-KINGFA 606 T8-DM62SAB-FCN 62-227680-0UA 1 PC (UO) T8-DM62SAB-FCN 62-227680-1UA FBT BRACKET...
- Page 33 ASS'Y - INFRARED RECEIVE T8-DM62SAB-MANSM T8-DM62SAB-IRY 1 PC IR RECEIVER MODULE T8-DM62SAB-IRY 02-IRR001-XX1 1 PC IR1101 HRM380017 TRANSISTOR 2SC1815-Y T8-DM62SAB-IRY 11-SC1815-YBX 1 PC Q1101 (NPN) T8-DM62SAB-IRY 14-LED03R-XX1 LED RED Φ3MM FO203 1 PC D1101 RES. C.F. 1.5K OHM 1/6W T8-DM62SAB-IRY 18-CB0152-JNX 1 PC R1102 +/-5%...
- Page 34 T8-DM62SAB-MAN 10-0RU3YX-FBX DIODE RU3YX 2 PC D830;D841 T8-DM62SAB-MAN 10-1N4001-EBX DIODE 1N4001 (RECTIFIER) 1 PC D301 T8-DM62SAB-MAN 10-1N4007-EBX DIODE IN4007 1 PC D816 D204;D206;D 819;D203;D2 02;D201;D84 0;D814;D210 ;D602;D211; T8-DM62SAB-MAN 10-1N4148-ABX DIODE 1N4148 (SWITCHING) 21 PC D302;D406;D 470;D306;D2 20;D862;D86 3;D601;D601 A;D603 T8-DM62SAB-MAN 10-79C18V-DBX DIODE ZENER 18V 1/2W 5% 1 PC D821...
- Page 35 R915;R274;R RES. C.F. 100 OHM 1/6W 916;R261;R2 T8-DM62SAB-MAN 18-CB0101-JNX 8 PC +/-5% 03;R202;R20 1;R255 R923;R922;R 605;R475;R4 RES. C.F. 1K OHM 1/6W +/- 11;R221;R01 T8-DM62SAB-MAN 18-CB0102-JNX 13 PC 3;R020A;R10 7;R220;R620 ;R860;J220 R006;R004;R 606;R003;R8 40;R851;R31 RES. C.F. 10K OHM 1/6W 2;R017;R020 T8-DM62SAB-MAN 18-CB0103-JNX 16 PC +/-5%...
- Page 36 RES. C.F. 2.7K OHM 1/6W T8-DM62SAB-MAN 18-CB0272-JNX 1 PC R835 +/-5% TCL18-CB0274-JNX= RES. T8-DM62SAB-MAN 18-CB0274-JNX 2 PC R471;R215 C.F. 270K OHM 1/6 RES. C.F. 3K OHM 1/6W +/- R080;R081;R T8-DM62SAB-MAN 18-CB0302-JNX 4 PC 252;R281 RES. C.F. 330 OHM 1/6W T8-DM62SAB-MAN 18-CB0331-JNX 2 PC R224;R207 +/-5%...
- Page 37 RES. C.F. 680K OHM 1/6W T8-DM62SAB-MAN 18-CB0684-JNX 1 PC R226 +/-5% R911;R910;R RES. C.F. 75 OHM 1/6W +/- T8-DM62SAB-MAN 18-CB0750-JNX 6 PC 909;R920;R9 06;R904 RES. C.F. 820 OHM 1/6W T8-DM62SAB-MAN 18-CB0821-JNX 1 PC R118 +/-5% RES. C.F. 100 OHM 1/4W T8-DM62SAB-MAN 18-CD0101-JNX 1 PC R813...
- Page 38 RES. M.O. 330K OHM 2W T8-DM62SAB-MAN 18-FG0334-JHX 1 PC R804 +/-5% RES. M.O. 3.9 OHM 2W +/- T8-DM62SAB-MAN 18-FG0399-JHX 1 PC R470 RES. M.O. 68K OHM 2W +/- T8-DM62SAB-MAN 18-FG0683-JHX 1 PC R810 RES. GLASS GLAZE 1M OHM T8-DM62SAB-MAN 18-KE0105-JNX 1 PC R802 1/2W +/-5% RES.
- Page 39 CAP. ELEC 100 UF 35V +/- T8-DM62SAB-MAN 25-BEB101-M1X 1 PC C303 CAP. ELEC 47 UF 35V +/- T8-DM62SAB-MAN 25-BEB470-M1X 1 PC C431 C605A;C605; CAP. ELEC 2.2 UF 50V +/- T8-DM62SAB-MAN 25-BFB229-M1X 6 PC C292;C262;C 242;C226 CAP. ELEC 0.47 UF 50V +/- T8-DM62SAB-MAN 25-BFB478-M1X 1 PC C267...
- Page 40 CAP. CER 470PF 400VAC +/- T8-DM62SAB-MAN 26-APK471-KBX 2 PC C803;C804 10% B CAP. CER 4700PF 250VAC T8-DM62SAB-MAN 26-AQK472-ZFX 2 PC C807;C808 +80% -20% F TCL26-EBP100-JCS= CAP. C106;C107;C T8-DM62SAB-MAN 26-EBP100-JCS 3 PC CER 10 PF 50V +/- CAP. CER 1000 PF 50V +/- C914;C839;C T8-DM62SAB-MAN 26-EBP102-KBS...
- Page 41 CAP. P.E. 0.01UF 63V +/- T8-DM62SAB-MAN 27-PBC103-J0X 1 PC C254 TCL27-PBC152-J0X= CAP. T8-DM62SAB-MAN 27-PBC152-J0X 1 PC C204 P.E 0.0015UF 63V CAP. P.E 0.015UF 63V +/- T8-DM62SAB-MAN 27-PBC153-J0X 1 PC C257 CAP. P.E 0.022 UF 63V +/- T8-DM62SAB-MAN 27-PBC223-J0X 2 PC C252;C260 CAP.
- Page 42 J207;J225;J 215;J929;J9 13;J926;J92 8;J903;J902 T8-DM62SAB-MAN 41-WJ0075-B00 WIREBAREJUMPER7.5MM 18 PC ;J901;J805; J822;J605;J 305;J250;J2 33;J812;J82 J202;J255;J T8-DM62SAB-MAN 41-WJ0070-B00 WIREBAREJUMPER7MM 3 PC J911;J210;J T8-DM62SAB-MAN 41-WJ0085-B00 WIREBAREJUMPER8.5MM 5 PC 402;J209;J9 J205;J206;J 203;J401;J4 T8-DM62SAB-MAN 41-WJ0100-B00 WIREBAREJUMPER10MM 7 PC 18;J208;J03 T8-DM62SAB-MAN 41-WJ0065-B00 1 R=N 2 PC J221;J218 RES.
- Page 43 TCL46-32535H-04XG= HS T8-DM62SAB-MAN 46-32535H-04XG 1 PC P003 4P24 550 TJC3-4Y/S FOR M. P201 HS 2468#24 420 TJC3- T8-DM62SAB-MAN 46-30953H-05XG 1 PC TO P503 5Y/SCN-5Y （CRT BD） T8-DM62SAB-MAN 46-35063W-03XG PIN BASE *3 VH-3A 1 PC P802 FOR M. P402 HS 4P24 460 F/W TJC3- T8-DM62SAB-MAN 46-30615H-04XG 1 PC...
- Page 44 T8-DM62SAB-MAN 67-H38012-UA0 RAW HEATSINK U 30 00 R=N 1 PC FOR IC601 T8-DM62SAB-MAN 67-H40390-4A0 HEAT SINK 2 PC FOR IC301 T8-DM62SAB-MAN 67-H40413-2A0 STANDARD HEAT SINK 1 PC FOR Q815 T8-DM62SAB-MAN 67-M40068-1E4 HEAT SINK BRACKET 2 PC Q815;FOR IC301 STICK ON T8-DM62SAB-MAN 71-DYP000-WX1 LABEL...
- Page 45 03-DM62SAB-SC60S T8-DM62SAB-PAN ASS'Y - PACKING 1 PC T8-DM62SAB-PAN 75-DM62LL-CC0 POLYFOAM_LL 1 PC T8-DM62SAB-PAN 75-DM62LR-CC0 POLYFOAM_LR 1 PC T8-DM62SAB-PAN 75-DM62UL-CC0 POLYFOAM_UL 1 PC T8-DM62SAB-PAN 75-DM62UR-CC0 POLYFOAM_UR 1 PC T8-DM62SAB-PAN T8-DM62SAB-PANZ ASS'Y - PACKING(ART) 1 PC T8-DM62SAB-PANZ 72-D62SAB-E601A OPERATION MANUAL 1 PC T8-DM62SAB-PANZ 74-104097-3WD POLYBAG (104CMX97CM) 1 PC...