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1. In FM mode the microcontroller is internally grounded to pin 4 The TDA9830 output is muted 6 Sound amplification The device TDA7267A is a mono audio amplifier in powerDIP package specially designed for TV application Thanks to the fully complementary output configuration the device delivers a rail to rail voltage swing without need of bootstrap capacitors No external heat sink is needed as the Cu ground plane of the PCB is used as heat dissipation 7 Vertical deflection The vertical driver circuit is a bridge configuration The deflection coil is connected between the output amplifiers which are driven in phase opposition The differential input circuit is voltage driven The input circuit is especially intended for direc connection to driver circuits which deliver symmetrical current signals but is also suitable for asymmetrical currents The output current of these devices is converted to voltages at the input pins via resistors R350 and R351 The differential input voltage is compared with the output current through the deflection coils measured as voltage across R302 which provides internal feed back information The voltage across R302 is proportional to the output current Flyback voltage The flyback voltage is determined by an additional supply voltage The principle of operation with two supply voltages class G makes it possible to fix the supply voltage Vp optimum for the scan voltage and the second supply voltage Vib
2. To obtain an accurate biasing of the picture tube the Continuous Cathode Calibration system has been included in these ICs A black level off set can be made with respect to the level which is generated by the black current stabilisation system In this way different colour temperatures can be obtained for the bright and the dark part of the picture The black current stabilisation system checks the output level of the 3 channels and indicates whether the black level of the highest output is in a certain window or below or above this window This indication is read from the status byte 01 and is used for automatic adjustment of the Vg2d voltage during the production of the TV receiver During switch off of the TV receiver a fixed beam current is generated by the black current control circuit This current ensures that the picture tube capacitance is discharged During the switch off period the vertical deflection is placed in an overscan position so that the discharge is not visible on the screen 2 IF The TDA9361 TDA9381 has an alignment free IF PLL demodulator The fully integrated oscillator is automatically calibrated using the 12 MHz crystal as a frequency reference The IF frequency is simply set in TV Processor by 2 bus The AFC information is available via I2C bus from the TV Processor status bytes The controlling software uses this information for tuner frequency tracking automatic following The AFC window is typically 125Kh
3. HEAT SINK A1050P H24 T2 0 717430081 1 SCREW TAPPTITE TT2 RND 3X8 MFZN 4859200401 SOCKET RGB YRS21 R1 4859109950 JACK PIN BOARD PH JB 9710A 58H0000020 COIL H LINEARITY L 76 76 5UH 5PLF20A1 FILTER LINE LF 20A1 4853533600 HOLDER LED P P BK 4859240120 CONN WAFER YFW500 06 4850708N08 CONNECTOR BIC 08T 25T C 20T ULW 400 4859908110 CORD POWER AS 1 L0 H03VVH2 F HOU 2200 PTJ2SW7200 HEAT SINK 557 TST1803DH 717430101 1 TST1803DH TR ST1803DHI 4857027200 HEAT SINK AL T1 0 7174301011 SCREW TAPPTITE TT2 RND 3X10 MFZN DDC7R0M290 POSISTOR ECPCD7R0M290 RX07B339JP R CEMENT 7W 3 3 OHM J BEN 15MM 4P 4859303530 SOCKET CRT PCS629 03C 5PK7252M FILTER SAW K7252M 5540101146 SW POWER PUSH SS 160 7 B ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION 50D10A3 TRANS DRIVE TD 10A3 50H0000211 FBT 1142 5109 50M4042A7 TRANS SMPS TSM 4042A7 4859721530 TUNER VARACTOR DT5 BF18D N 5XE12R000E CRYSTAL OUARTZ HC 49 U 12 00000MHZ 30PPM 5PYXTSR5MB FILTER CERA XT 5 5MB 5PYXT6RSMB FILTER CERA XT 6 5MB 5PYXT6ROMB FILTER CERA XT 6 0MB PTMPJOD435 PCB MAIN RHU AS DTA 21V1MZ CEXF2C330V C ELECTRO 160V RSS 33MF 13X20 TP CEXF2E100V
4. IC DESCRIPTION APPENDIX 5 24C08 8 Kbit EEPROM features 8 Kbit serial 2 bus EEPROM Single supply voltage 4 5 V to 5 5 V 1 Million Erase Write cycles minimum 40 year data retention minimum Pin description Name Description EO 51 E2 Device address SDA Serial Data Address Input Output SCL Serial clock WC Write control Vcc Supply voltage Vss Ground The memory device is compatible with the 2 memory standard This is two wire serial interface that uses a bi directional data bus and serial clock The memory carries a built in 4 bit unique device type identifier code 1010 in accordance with the I2C bus definition Serial Clock SCL The SCL input is used to strobe all data in and out of the memory Serial Data SDA The SDA pin is bi directional and is used to transfer data in or out of the memory 20
5. LT2A05G TP D1N4937G DIODE LT2A05G 1N4937G TAPPING DUZ8R2BM DIODE ZENER UZ 8 2B D1N4937G DIODE 1N4937G TAPPING D1N4937G DIODE 1N4937G TAPPING DUZ8R2BM DIODE ZENER UZ 8 2B D1N4148 DIODE 1N4148 TAPPING DZY160 DIODE ZENER ZY160 DUZ2R7B DIODE ZENER UZ 2 7B DRGP15J DIODE RGP15J DUZ5R1B DIODE ZENER UZ 5 1B DUZ5R6BM DIODE ZENER UZ 5 6BM DUZ5R6BM DIODE ZENER UZ 5 6BM PART CODE PART NAME DESCRIPTION ELECTRICAL PARTS LIST REMARK DUZ5R6BM DIODE ZENER UZ 5 6BM DUZ5R6BM DIODE ZENER UZ 5 6BM DUZ5R6BM DIODE ZENER UZ 5 6BM DUZ5R6BM DIODE ZENER UZ 5 6BM DUZ5R6BM DIODE ZENER UZ 5 6BM DUZ5R6BM DIODE ZENER UZ 5 6BM 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WI
6. Vp supply voltage Vos VoB output voltage B GND GND ground Van Vilo flyback supply voltage Voa VOA output voltage A VO guard guard output voltage Va OO O O SN VM input measuring resistor Vi pos Vi ditr Vis N NO Vi diff input feedback Vi neg GND IC DESCRIPTION APPENDIX 4 TDA61070 The TDA6107Q includes three video output amplifiers in one plastic DIL Bent SIL 9 pin medium power package using high voltage DMOS technology and is intended to drive the three cathodes of a colour CRT directly To obtain maximum performance the amplifier should be used with black current control Features Typical bandwidth of 5 5 MHz for an output signal of 60 Vpp High slew rate of 900V us No external components reguireds Very simple application Single supply voltage of 200V Internal reference voltage of 2 5 V Fixed gain of 50 Black current stabilisation BCS circuit Thermal protection Pin description Description inverting input 1 inverting input 2 inverting input 3 TDA61070 ground fim black current measurement output supply voltage cathode output 3 cathode output 2 O OO DO BR OJN cathode output 1 MIRROR 1 TDA6107Q Voce Voc lotm MIRROR 2 MGK278
7. R CARBON FILM 1 6 1K OHM J RD AZ103J R CARBON FILM 1 6 10K OHM J RD AZ102J R CARBON FILM 1 6 1K OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ223J R CARBON FILM 1 6 22K OHM J RD AZ103J R CARBON FILM 1 6 10K OHM J RD AZ562J R CARBON FILM 1 6 5 6K OHM J RD 4Z102J R CARBON FILM 1 4 1K OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ432J R CARBON FILM 1 6 4 3K OHM J RD AZ122J R CARBON FILM 1 6 1 2K OHM J RD AZ272J R CARBON FILM 21 1 6 2 7K OHM J ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRIPTION REMARK R575 RD AZ272J R CARBON FILM 1 6 2 7K OHM J R580 RD AZ561J R CARBON FILM 1 6 560 OHM J R585 RD 4Z224J R CARBON FILM 1 4 220K OHM J R586 RD AZ221J R CARBON FILM 1 6 220 OHM J R591 RD AZ221J R CARBON FILM 1 6 220 OHM J R592 RD AZ103J R CARBON FILM 1 6 10K OHM J R593 RD AZ103J R CARBON FILM 1 6 10K OHM J R594 RD AZ103J R CARBON FILM 1 6 10K OHM J R595 RD AZ473J R CARBON FILM 1 6 47K OHM J R596 RD AZ302J R CARBON FILM 1 6 3K OHM J R597 RD AZ153J R CARBON FILM 1 6 15K OHM J R598 RD AZ153J R CARBON
8. 1 4W 1 5K 1 4W 1K 1 4W 1 2K 1 4W 1 5K 1 6W 7 5K 1 6W 6 8K 1 6W 5 6K 1W 2 OHM 1W 2 4 OHM 1W 1 2 OHM ODY M1401 CDY S2017 W ITC PULSE A34JLL90X A4BAGY13X A51EFK155X01 21015 1015 1 38 8597 s do DC 21SF a vertical 3 36 RSN RER 518 10u R305 0360 B Te 1303 VN 733 1 430 LED an R71 430 7 48 ov 2 20 3 N WE 6584 TDA7267A s Ko i R50 C408 RET 24 68 7 6871 100 0807 a AE 1401 25156 6818 KTAI266Y ES T OPTION 6 0 Horizontal i T 87 z gt 4 dy Gos 0812 750 782 16V 560 22000 cgi D813 14957 100V 1N4148 7401 tou T TD 10A3 p 0402 0808 602 TKSC3207Y 184937 AZO004V C P cen L ome son T 7 jem T801 7 2 0403 TSM4042 160V lt 4 4 KTC3198Y 0421 EE gs 5 03
9. 1 6 KV 9100PF 1 6KV 8200PF 1 6KV 7500PF C MYLAR 200V 0 62uF 200V 0 47 pF 200V 0 43uF 200V 0 47 ERROR AMP DP123 DP123 DP133 DP123 COIL H LIN NONE NONE NONE L 76 POSISTOR ECPCC140M290 ECPCD7ROM290 ECPCD7RM290 ECPCD7R0M290 SOCKET CRT PCS633A PCS629 03C PCS633A PCS629 03C CONN WAFER YFW500 05 YFW500 05 YFW500 05 YFW500 06 WIRE COPPER AWG22 1 0 65 AWG22 1 0 65 AWG22 1 0 65 NONE R METAL FILM 1 4W 1K OHM 1 4 1 2K OHM 1 4W 1 2K OHM 1 4W 1 5K OHM R METAL FILM 1 4W 1K OHM 1 4 1 2K OHM 1 4W 1 2K OHM 1 4W 1 5K OHM R METAL FILM 1 6W 7 5K OHM 1 6 6 8K OHM 1 6 6 8K OHM 1 6 5 6K OHM R METAL FILM 1 4W 6 8K OHM 1 4 7 5K OHM 1 4W 7 5K OHM 1 4W 7 5K OHM R METAL OXIDE 1W 0 82 OHM 1W 0 68 OHM 1W 3 0 OHM 1W 2 7 OHM COIL DY ODY M1401 CDY S2017 ODY M2050 ITC CRT MAGNET CP NY 225 NY 88DTA NY 225 ITC CRT CRT A34JLL90X A48AGY13X A48JLL92X A51EFK155X01 CRT GND NET 1401S 1015 1P 20015 1015 1P 20015 1015 1P 21015 1015 1 COIL DEG DC 1450 DC 20SF 24 DC 20SF DC 21SF DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC E mail djkoo web dwe co kr TEL 82 2 360 7806
10. 25V RSS 47MF 5X11 TP CMXM2A104J C MYLAR 100V 0 1MF J TP CMXM2A104J C MYLAR 100V 0 1MF J TP CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP CEXF1H109V C ELECTRO 50V RSS 1MF 5X11 TP CEXF1H109V C ELECTRO 50V RSS 1MF 5X11 TP CEXF1H479V C ELECTRO 50V RSS 4 7MF 5X11 TP CMXM2A104J C MYLAR 100V 0 1MF J TP CMXM2A104J C MYLAR 100V 0 1MF J TP CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP CEXF1H229V C ELECTRO 50V RSS 2 2MF 5X11 TP CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP CEXF1H108V C ELECTRO 50V RSS 0 1MF 5X11 TP CEXF1C101V C ELECTRO 16V RSS 100MF 6 3X11 TP CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP CCXF3A472Z C CERA 1KV F 4700PF Z T CCXF3A472Z C CERA 1KV F 4700PF Z T CMXM2A222J C MYLAR CMXM2A102J C MYLAR 100V 2200PF J TP 100V 1000PF J TP CCXB3A471K CCERA 1KV B 470PF K T CEXF2A100V C ELECTRO 100V RSS 10MF 6 3X11 C
11. A 8 5 KTAIZ66Y N4148 N a 5877 RESISTANCE MEASUREMENTS SHOULD BE PERFORMED TO DETERMINE THAT 1 5K X3 209i ud 1 4W 1K CO ABL T EXPOSED PARTS ARE PROPERLY INSULATED FROM THE SUPPLY CIRCUIT Raas 8556 556 RADI P501A1 PAR 6 8K NC O oan EXT V IN J A g 10u 39 1 L 10K 058 1510 Voltage Heater 8595 47K lt JEXT A IN R575 2 7K xy veer k 6 10 56 58 JR567 C500 27 279 5 0 47 12MHz 2 se 2 s7 ss 55 54 3 53 3 52 537 26539 28238 28533 amp 281 28 ST Cay 95 2 49 o fpe S 27 S 46 S fas ss 22 5 1 to ss POWER 0 047u 1 6KV 9100PF 1 6KV 7500PF 200V 0 47UF 200V 0 68UF 3 3 60 gt Reset N X tal out 056 GND CVBS Vin AVL DEC o a AudDeem S DECOUP ING loop filter NONE NONE L 76 140M290 7ROM290 7ROM290 PCS633A PCS629 03C PCS629 03C WIRE COPPER WIRE COPPER NONE 1 4W IK 1 4W 1 2K
12. C ELECTRO 250V RSS 10MF 10X20 TP CBXB3D102K C CERA SEMI 2KV BL N 1000PF K T CEXF2C101V C ELECTRO 160V RSS 100MF 16X25 CEXF2C101V C ELECTRO CEXF1C222V C ELECTRO TP 160V RSS 100MF 16X25 TP 16V RSS 2200MF 13X25 TP CEXF1E102V C ELECTRO 25V RSS 1000MF 13X20 TP CCXB3D102K CCERA 2KV B 1000PF K TAPPING PTMPJBD435 PCB MAIN M 10 AS DTA 21V1MZ 2TM18006BE TAPE MASKING 6 2X500 4856310300 EYE LET BSR 0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYE LET BSR T0 2 R1 6 4856310300 EYELET BSR 0 2 R1 6 4856310300 EY
13. optimum for the flyback voltage Using this method very high efficiency is achieved The supply voltage Vm is almost totally available as fly back voltage across the coil this being possible due to the absence of a coupling capacitor Protection The output circuit has protection circuits for Too high die temperature overvoltage of output stage A Guard circuit The guard signal is not used by the TDA9361 TDA9381 to blank the screen in case of a fault condition Damping resistor For HF loop stability a damping resistor R305 is connected across the deflection coil IC DESCRIPTION APPENDIX 1 TDA9361 TV signal processor Teletext decoder with embedded p Controller TDA9381 TV signal processor with embedded p Controller TV signal Processor Multi standard vision IF circuit with alignment free PLL demodulator Internal switchable time constant for the IF AGC circuit Mono intercarrier with a selective FM PLL demodulator which can be switched to the different FM sound frequencies 5 5 6 0 6 5 MHz Source selection between Internal CVBS and external CVBS or Y C signals Integrated chrominance trap circuit Integrated luminance delay line with adjustable delay time Asymmetrical delay line type peaking in the luminance channel Black stretching for non standard luminance signals Integrated chroma band pass filter with switchable centre frequency Only one reference 12 MHz crystal required for
14. typical Switching between internal FM external AM or external audio from SCART is controlled internally by software FUNCTIONAL DESCRIPTION APPENDIX Fast R G B insertion The external R G B insertion needs a fast switching and cannot be controlled by the software instruction cycle of 1u sec The fast switching pin 16 of SCART is directly connected to the TV processor pin 45 Fast blanking input The display is synchronised with the selected video source i e to get stable R G B signal insertion they must be synchronised with the selected video source 4 u Controller I O pin configuration and function The I O pins of the Controller can be configured many ways All port functions can be individually programmed by the controlling software Each I O port pin can be individually programmed in these configurations Open drain In this mode the port can function as input and output It requires an external pull up resistor The maximum allowable supply voltage for this pull up resistor is 5V So in this mode it is possible to interface a 5 Volt environment like 12C while the u Controller has a 3 3 Volt supply Push Pull The push pull mode can be used for output only Both sinking and sourcing is active which leads to steep slopes The levels are 0 and Vddp the supply voltage 3 3Volts High impedance This mode can be used for input only operation of the port Special port for LED Pin 10 and 11 have the same func
15. 0 Increase RF AGC level and stop when the level on pin 6 of 1501 goes below 2 5 Vdc SCHEMATIC DIAGRAM NOTE 1 RESISTANCE IS SHOWN IN OHM K 1000 M 1000000 2 UNLESS OTHERWISE NOTED IN SCHEMATIC ALL CAPACITOR VALUES ARE EXPRESSED IN uF 3 VOLTAGES READ WITH VTVM FROM POINT INDICATED TO CHASSIS GROUND CP 185C amp 185N SCHMETIC DIAGRAM s k Seo 09 SEP 2001 BKEY OPTION EXT A OUT EXT A IN C3 0002 if USING A COLOR BAR SIGNAL WITH ALL CONTROLS AT NORMAL LINE 230V AC RA20 DA4 cas Ne VOLTAGE READINGS SHOWN ARE NORMAL VALUES AND MAY VARY 20 EXCEPT H V 1901 1DA6107Q 47K 75 6 N 4 THIS CIRCUIT DIAGRAM IS A STANDARD ONE CIRCUIT PRINTED MAY BE Ed SUBJECT TO CHANGE FOR PRODUCT IMPROVEMENT WITHOUT PRIOR NOTICE WARNING BEFORE SERVICING THE CHASSIS READ X RAY RADIATION SAFETY RA05 10K R554 CA01 RAOZ 6 f wi wo fs p 0531 NC u u E ops nd E Top E um PRECAUTION AND PRODUCT SAFETY NOTICE IN SERVICE MANUAL 15 6 ss 6 8905 M 0554 0555 CIN 8404 CAUTION TO SERVICE TECHNICIANS 4 NC BEFORE RETURNING THE RECEIVER TO CUSTOMER LEAKAGE CURRENT QR 0955 0535 NC 552 R557 RA1D 2 81 09
16. 1 6 10K OHM J 22 ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRIPTION REMARK R829 RD AZ102J R CARBON FILM 1 6 1K OHM J R830 RD AZ151J R CARBON FILM 1 6 150 OHM J R831 RD 4Z100J R CARBON FILM 1 4 10 OHM J R901 RD AZ102J R CARBON FILM 1 6 1K OHM J R902 RD AZ102J R CARBON FILM 1 6 1K OHM J R903 RD AZ102J R CARBON FILM 1 6 1K OHM J R904 RD 2Z152J R CARBON FILM 1 2 1 5K OHM J R905 RD 2Z152J R CARBON FILM 1 2 1 5K OHM J R906 RD 2Z152J R CARBON FILM 1 2 1 5K OHM J R954 RD AZ103J R CARBON FILM 1 6 10K OHM J RAO1 RD AZ680J R CARBON FILM 1 6 68 OHM J RA02 RD AZ101J R CARBON FILM 1 6 100 OHM J RA03 RD AZ101J R CARBON FILM 1 6 100 OHM J RA04 RD AZ101J R CARBON FILM 1 6 100 OHM J RA06 RD AZ750J R CARBON FILM 1 6 75 OHM J RA07 RD AZ390J R CARBON FILM 1 6 39 OHM J RA08 RD AZ750J R CARBON FILM 1 6 75 OHM J RA09 RD AZ750J R CARBON FILM 1 6 75 OHM J RA10 RD AZ101J R CARBON FILM 1 6 100 OHM J RA11 RD AZ102J R CARBON FILM 1 6 1K OHM J RA12 RD AZ471J R CARBON FILM 1 6470 OHM J RA16 RD AZ680J R CARBON FILM 1 6 68 OHM J RA19 RD AZ750J R CARBON FILM 1 6 75 OHM J RA20 RD AZ473J R CARBON FILM 1 6 47K OHM J RA30 RD AZ102J R CARBON FILM 1 6 1K OHM J RA44 RD AZ682J R CARBON FILM 1 6 6 8K OHM J 23 PART NAME DIFFERENT PART LIST 14 INCH 20 INCH CPT CRT 20 INCH ORING CRT 21 INCH C MYLAR 1 6KV 7500PF
17. 20V3 REMARKS CHING DIA CUTTING MATERIAL 1 20v3 4 1 pv e TAPPING CRT FIXING 45 R RUBBER IN IN PART NAME EXPLODED VIEW 3 21V3 2 a RE E b 6 5 s 5 2 812 E 8 a 5 g e aleja l z 2285 e x 2 a 2 1 OE p u x 3 z lt 8 E 8 E gt x 5 E al x E EIE EI ale N 5 E S EX S 3 x 9t ajsjalajzjejsjejejz alela a a 2 PRINTED CIRCUIT BOARD ELECTRICAL PARTS LIST CAUTION A is safety part so it must be used the same part is a recommendable part for essential stock PART CODE 48B3740A10 PART NAME TRANSMITTER REMOCON DESCRIPTION REMARK R 40A10 PTACPWD434 ACCESSORY AS DTA 20V1MZ 4850Q00910 BATTERY ROS NN 48586002E2 MANUAL INSTRUCTION ENGLISH ARABIC 4858213800 BAG INSTRUCTION L D P E T0 05X250X400 PTBCSHD435 COVER BACK AS DTA 21V1MZ 4852151601 COVER BACK HIPS BK 4855415800 SPEC PLATE 150ART P E FILM C TV 4857820
18. FILM 1 6 15K OHM J R599 RD AZ392J R CARBON FILM 1 6 3 9K OHM J R601 RD 42332J R CARBON FILM 1 4 3 3K OHM J R602 RD AZ152J R CARBON FILM 1 6 1 5K OHM J R610 RD 42332J R CARBON FILM 1 4 3 3K OHM J R710 RD AZ431J R CARBON FILM 1 6 430 OHM J R711 RD AZ431J R CARBON FILM 1 6 430 OHM J R713 RD AZ100J R CARBON FILM 1 6 10 OHM J R720 RD AZ122J R CARBON FILM 1 6 1 2K OHM J R721 RD AZ181J R CARBON FILM 1 6 180 OHM J R722 RD AZ221 J R CARBON FILM 1 6 220 OHM J R723 RD AZ331J R CARBON FILM 1 6 330 OHM J R724 RD AZ471J R CARBON FILM 1 6 470 OHM J R803 RD 4Z185J R CARBON FILM 1 4 1 8M OHM J R804 RD 4Z185J R CARBON FILM 1 4 1 8M OHM J R805 RD 4Z114J R CARBON FILM 1 4 110K OHM J R806 RD 4Z244J R CARBON FILM 1 4 240K OHM J R807 RD 4Z201J R CARBON FILM 1 4 200 OHM J R808 RD 4Z162J R CARBON FILM 1 4 1 6K OHM J R809 RD 4Z510J R CARBON FILM 1 451 OHM J R810 RD 4Z752J R CARBON FILM 1 4 7 5K OHM J R811 RD 42241J R CARBON FILM 1 4 240 OHM J R812 RD 4Z102J R CARBON FILM 1 4 1K OHM J R813 RC 2Z565KP R CARBON COMP 1 2 5 6M OHM K R814 RD AZ102J R CARBON FILM 1 6 1K OHM J R815 RD AZ102J R CARBON FILM 1 6 1K OHM J R816 RD AZ472J R CARBON FILM 1 6 4 7K OHM J R817 RD AZ223J R CARBON FILM 1 6 22K OHM J R818 RD AZ103J R CARBON FILM 1 6 10K OHM J R823 RD 42561J R CARBON FILM 1 4 560 OHM J R825 RD AZ222J R CARBON FILM 1 6 2 2K OHM J R826 RD AZ751J R CARBON FILM 1 6 750 OHM J R827 RD AZ472J R CARBON FILM 1 6 4 7K OHM J R828 RD AZ103J R CARBON FILM
19. TACT THVH472GCA 5550101090 SW TACT THVH472GCA 5550101090 SW TACT THVH472GCA 5550101090 SW TACT THVH472GCA PTMPJAD435 PCB MAIN AXIAL AS DTA 21V1MZ 2TM14006LB TAPE MASKING 3M 232 6 0X2000M 2TM10006LB TAPE MASKING 3M 232 MAP C 6 2X2000M 4859805293 PCB MAIN 246X246 S1B CCZF1H473Z CCERA 50V F 0 047MF Z CCZB1H222K CCERA 50V B 2200PF K AXIAL CCZF1H103Z C CERA 50V F 0 01MF Z CBZF1H104Z C CERA SEMI 50V F 0 1MF Z CBZR1C222M C CERA 16V Y5R 2200PF M AXIAL CBZR1C472M C CERA 16V Y5R 4700PF M AXIAL CBZF1H104Z C CERA SEMI 50V F 0 1MF Z CCZB1H221K C CERA 50V B 220PF K AXIAL CCZB1H221K C CERA 50V B 220PF K AXIAL CCZF1H103Z C CERA 50V F 0 01MF Z CCZB1H102K C CERA 50V B 1000PF K AXIAL CCZF1H473Z C CERA 50V F 0 047MF Z CCZF1H473Z C CERA 50V F 0 047MF Z CCZB1H102K C CERA 50V B 1000PF K AXIAL CCZF1H223Z C CERA 50V F 0 022MF Z CCZF1H223Z C CERA 50V F 0 022MF Z CCZF1H223Z C CERA 50V F 0 022MF Z CBZR1C472M C CERA 16V Y5R 4700PF M AXIAL CCZB1H821K CCERA 50V B 820PF K AXIAL CBZR1C222M CCERA 16V Y5R 2200PF M AXIAL CZCH1H270J CCERA CH 50V 27PF J AXL 52MM ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK CZCH
20. X RAY RADIATION protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage wattage etc Replacement parts which have these spe cial safety characteristics are identified in this manual and its supplements electrical components having such features are identified by designated symbol on the parts list Before replacing any of these components read the parts list in this manual carefully The use of substitutes replacement parts which do not have the same safety characteristics as specified in the parts list may create X RAY Radiation SPECIFICATIONS 21Pin EURO SCART SIGNAL DESCRIPTION MATCHING VALUE Audio Output Right 0 5 Vrms Impedance lt 1kQ RF 54 Mod Audio Input Right 0 5Vrms Impedance gt 10kQ Audio Output Left 0 5 Vrms Impedance lt 1kQ RF 54 Mod Audio Earth Blue Earth Audio Input Left 0 5Vrms Impedance gt 10kQ Blue Input 0 7Vpp 0 1V Inpedance 750 Slow Switching TV 0 to 2V AV 4 5 to 12V Impedance gt 10kQ c o o o AJOJN Green Earth N C Green Input 0 7Vpp 0 1V Impedance 75Q N C Red Earth Blanking Earth Red Input Chroma Input 0 7Vpp 0 1V Impedance 750 308 for a luminance signal of 1 Vpp Fast Switching 0 to 0 4V Logic 1 to Logic 1 Impedance 750 Video Out Earth Video In Earth Video Output
21. is important to use an accurate and reliable high voltage meter 2 The only source of X RAY Radiation in this TV receiver is the picture tube For continued X RAY RADIATION protection the replacement tube must be exactly the same type tube as specified in the parts list m SAFETY PRECAUTION 1 Potentials of high voltage are present when this receiver is operating Operation of the receiver outside the cabinet or with the back cover removed involves a shock hazard from the receiver 1 Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage eguipment 2 Discharge the high potential of the picture tube before handling the tube The picture tube is highly evacuated and if broken glass fragments will be violently expelled 2 If any Fuse in this TV receiver is blown replace it with the FUSE specified in the Replacement Parts List 3 When replacing a high wattage resistor oxide metal film resistor in circuit board keep the resistor body 10 mm away from the circuit board 4 Keep wires away from high voltage or high temperature components 5 This receiver must operate under AC 230 volts 50 Hz NEVER connect to a DC supply of any other voltage or freguency m PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this equipment have special safety related characteristics These characteristics are often passed unnoticed by a visual inspection and the
22. narrow band PLL filter SNDIF n u HOUT horizontal output FBISO flyback input sandcastle output AUDEXT external audio input EHTO EHT Overvoltage protection PLLIF IF PLL loop filter IFVO IF video output main supply voltage TV processor CVBSINT internal CVBS input GND1 ground 1 for TV processor CVBS Y external CVBS Y input CHROMA chrominance input SVHS AUDOUT audio out INSSW2 2nd RGB insertion input R2IN 2nd R input G2IN 2nd G input B2IN 2nd B input BCLIN beam current limiter input BLKIN black current input RO RED Output 30 GREEN Output BO BLUE Output VDDA analog supply of Teletext decoder and digital supply of TV Processor 3 3V VPE OTP programming supply VDDC digital supply to core 3 3V OSCGND oscillator ground supply XTALIN crystal oscillator input XTALOUT crystal oscillator output RESET reset VDDP digital supply to periphery 3 3V Audio Mute Port 1 0 Audio mute output PushPull Power Port 1 1 Power output PushPull IR in Interrupt input O R C Infrared input IC DESCRIPTION APPENDIX P1 3 T1 m P2 1 INTO P1 6 SCL E ZI P1 1 TO P1 7 SDA P1 0 INTI P2 0 TPMW 1 VDDP P3 0 ADCD RESET P3 1 ADC1 E XTALOUT P3 2 ADC
23. the u Controller Teletext and the colour decoder PAL NTSC or multistandard colour decoder with automatic search system Internal base band delay line RGB control circuit with Continuous Cathode Calibration white point and black level off set adjustment so that the colour temperature of the dark and the bright parts of the screen can be chosen independently Linear RGB or YUV input with fast blanking for external RGB YUV sources The Text OSD signals are internally supplied from the u Controller Teletext decode Contrast reduction possibility during mixed mode of OSD and Text signals Horizontal synchronisation with two control loops and alignment free horizontal oscillator Vertical count down circuit Vertical driver optimised for DC coupled vertical output stages Horizontal and vertical geometry processing Controller 80C51 controller core standard instruction set and timing e 1us machine cycle 64Kx8 bit programmed ROM e 3 12Kx8 bit Auxiliary RAM shared with Display and Acquisition e Interrupt controller for individual enable disable with two level priority e Two 16 bit Timer Counter registers e watchdog timer Auxiliary RAM page pointer 16 bit Data pointer IDLE and Power Down PD mode 8 bit A D converter 4 pins which can be programmed as general 1 0 pin or ADC input IC DESCRIPTION APPENDIX Data Capture Text memory 10 pages Inventory of transmitted Teletext pages stored i
24. 1 Vpp 3dB Impedance 75Q Video Input 1 Vpp 3dB Impedance 750 Common Earth lt 9 lt a x O e m O 1501 EEPROM 1101 lt Speaker SCART Front RCA Audio Amplifier ex AGE m HS In 1601 Chroma in Ext Audio gt Audio Out gt 5 Ext Video n g 4 v v y Trap 5 5MHz S gt ja P Vv Video Out E n 5 Demphasis o o Audio Line Out A E c o Ext Audio in Audio AM Input Video Out Video In Ext Video In Microcontroller Narrow 2 Band PLL x Teletext decoder Video Processor Demodulator 5 5 MHz Software Controlled Tape BPF AM X Demodulator S 38 9 MHz N AF output Mute Control SCL SDA AGC A 23 24 1 Input A SFI AM Demodulator 1101 Tuner LOSI p SF2 IF Input AM Demodulator Mute SECAM L model only ALIGNMENT INSTRUCTIONS Microcontroller configuration Service mode To switch the TV setinto service mode please see instruction below 1 Select pr number 91 2 Adjust sharpness to minimum and exit all menu 3 Quickly press the key sequence RED GREEN menu To exit SERVICE menu
25. 1H270J CCERA CH 50V 27PF J AXL 52MM CCZF1H103Z C CERA 50V F 0 01MF Z CBZF1H104Z C CERA SEMI 50V F 0 1MF Z CCZB1H101K C CERA 50V B 100PF K AXIAL CCZB1H101K C CERA 50V B 100PF K AXIAL CCZB1H101K C CERA CCZB1H102K C CERA 50V B 100PF K AXIAL 50V B 1000PF K AXIAL D1N4148 DIODE 1N4148 TAPPING DUZ33B DIODE ZENER UZ 33B D1N4004S DIODE 1N4004S DUZ12BM DIODE ZENER UZ 12BM UNIZON DUZ15BN DIODE ZENER UZ 15BM DUZ33B DIODE ZENER UZ 33B DUZ33B DIODE ZENER UZ 33B DUZ33B DIODE ZENER UZ 33B DUZ33B DIODE ZENER UZ 33B DUZ33B DIODE ZENER UZ 33B D1N4937G DIODE 1N4937G TAPPING D1N4937G DIODE D1N4937G DIODE 1N4937G TAPPING D1N4937G DIODE 1N4937G TAPPING 1N4937G TAPPING D1N4148 DIODE 1N4148 TAPPING D1N4148 DIODE 1N4148 TAPPING D1N4148 DIODE 1N4148 TAPPING D1N4148 DIODE D1N4148 DIODE 1N4148 TAPPING D1N4148 DIODE 1N4148 TAPPING 1N4148 TAPPING DUZ2R4B DIODE ZENER UZ 2 4B DMTZJ5R1A DIODE ZENER MTZJ 5 1A DLT2A05G DIODE LT2A05G TP DLT2A05G DIODE LT2A05G TP DLT2A05G DIODE DLT2A05G DIODE
26. 1UC3104M C LINE ACROSS WORLD AC250V 0 1UF M R 47 CEYN2W151P C ELECTRO 450V LHS 150MF 25X40 PART CODE PART NAME DESCRIPTION ELECTRICAL PARTS LIST REMARK CH1AFE222M C CERA AC 4KV 2200PF M KX DE1210 A DSML1216W LED SML1216W DRGP30J DIODE RGP30J 5FSGB4022L FUSE GLASS TUBE SEMKO TL 4A 250V MF51 A 4SG0DX0001 SPARK GAP SSG 102 A1 1 0KV 4SG0DX0001 SPARK GAP SSG 102 A1 1 0KV 4SG0DX0001 SPARK GAP 4SG0DX0001 SPARK GAP SSG 102 A1 1 0KV SSG 102 A1 1 0KV PTA2SW5405 HEAT SINK ASS Y 1TDA8357J 7174301011 1TDA8357J IC VERTICAL TDA8357J 4857025405 HEAT SINK A1050P H24 T 2 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN 1DW3812EB1 IC MICOM DW9381 N1 2S 2B1 1TDA7267A IC AMP TDA7267A 1AT24C08PC IC AT24C08 10PC 1SRV21M IC PREAMP SRV 21M PTA2SW7919 HEAT SINK ASS Y 1MA8920 7174301211 1MA8920 IC POWER MA8920 4857027919 HEAT SINK AL EX 7174301211 SCREW TAPPTITE TT2 RND 3X12 MFZN 4853938501 BRKT TR SBHG1 A T1 5 1LTV8170 IC PHOTO COUPLER LTV 817C 1DP123 ERROR DP123 1KA7805 IC REGULATOR KA7805 PTC3SW1100 HEAT SINK ASS Y 1TDA6107Q 717430081 1 1TDA6107Q IC VIDEO TDA6107Q 4857031100
27. 2 XTALIN P3 3 ADC3 m OSCGND VSSC P Fil vDDC PO 5 VPE 0 VDDA VSSA BO SECPLL o Liceo VP2 8 Cro DECDIG m a BLKIN PH2LF E iE BCLIN PHILF O B2 uUIN GND3 o G2 YIN DECBG J ORIVIN AVL EWD Ea a INSSW2 VDRB E AUDOUT AMOUT VDRA CHROMA IFINT CVBS Y IFIN2 GNDI IREF CVBSINT VSC m vP1 TUNERAGC mi IFVO SVO AUDEEM SIFIN1 DI DECSDEM DIFIN2 C EHTO GND2 ti W esso SNDPLL SIFAGC FBISO AVL REFO AMOUTDI HOUT IC DESCRIPTION APPENDIX 2 TDA 7267A deliver 3w the 10 14 5V 8Q Internal fixed gain 32dB No feedback capacitor No boucherot cell Thermal protection Ac short circuit trotection Svr capacitor for better ripple Rejection PowerDIP 8 8 Low turn on off pop Stand by mode ORDERING NUMBER TDA7267A Decription The device TDA7267A is a new technology Mono Audio Amplifier in Power DIP package specifically designed for TV application Thanks to the fully complementary output configuration the device delivers a rail to rail voltage swing without need of boostrap capacitors Black Diagram OVs 14 5V C4 100uF C1 0 1uF IN C5 470uF IN lt 80 C3 47 D98AU827 IC DESCRIPTION APPENDIX ABSOLUTE MAXIMUM RATINGS Parameter Operating Supp
28. 300 CLOTH BLACK 0 5 L 150 PTPKCPD435 PACKING AS DTA 21V1MZ 6520010100 STAPLE PIN AUTO W65 485805063B BOX CARTON DW 3A 4858186800 PAD EPS 21V1 4858211800 BAG P E L D P E T0 03X1300X1100 4851945310 CRT GROUND NET 21015 1015 1 58G0000147 COIL DEGAUSSING DC 21SF PTCACAD435 CABINET AS DTA 21V1MZ 4856013300 SCREW CRT FIXING 30X80 BK 4856215402 WASHER RUBBER CR T2 0 4856013302 SCREW CRT FIXING 30X190 BK 7172401412 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK 7172401412 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK 4854939403 BUTTON POWER ABS BK 4855930900 DECO TERM PVC CL TO 2 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN 4859625560 CRT A51EFK155X01 PTFMSJD435 MASK FRONT AS DTA 21V1MZ 4851932302 BUTTON CTRL 4939402 5536301 4852067601 MASK FRONT HIPS BK 48556159SS MARK BRAND SILVER ETCHING DIA CUTTIN PTSPPWA652 SPEAKER AS DTA 14C4TFF 4850703850 CONNECTOR YH025 03 35098 ULW 200 4858314010 SPEAKER SP 5070F01 3W 8 OHM PTMPMSD435 PCB MAIN MANUAL AS DTA 21V1MZ 2193102005 SOLDER BAR SN PB 63 47 S63S 1320 2291050616 FLUX SOLDER JS 64T3 2291050301 FLUX SOLVENT IM 1000 CMYH3C752J C MYLAR 1 6KV BUP 7500PF J CMYE2D474J C MYLAR 200V PU 0 47MF J CL
29. 50 8360 508 4 O Vertical Amp 25 55 I AT402 i 56015 Aposisron I301 TDA8357J T142 xxxx Vp HV Vo 689 Vfb 45V Vo Vguard R808 C350 S C417 kv Ue 0049 Ion era 50077 479 cas msi 2885 VA w 7 R431 n 4700p VU yaw o G 3 25 1 12 1 4W R430 z2 2200740 K of 8h Ga L 1 4W 22K 95 nm pP pap PRODUCT SAFETY NOTE a NET ra TAS ZA A 4045 497 5 bw TU ER BIZA aos dato RS THE COMPONENTS MARKED WITH I ARE IMPORTANT FOR MAINTAINING Ec 1000p M E 12K 5 1008 ns all WR 200V 1 Te 4 50v9 4 Disi 0222 Video voltage Eh THE SAFETY OF THE SET AND SHOULD BE REPLACED ONLY WITH TYPES BE 28 64 1801 25 253 250 CO C uz l 8402 BUS MA8920 z a 2 ROM IDENTICAL TO THOSE IN THE ORIGINAL OR SPECIFIED ONE IN THE PART LIST CORD POWER PSB 22sP FANI 250V CAUTION LIVE MAINS DON T DEGRADE THE SAFETY OF THE SET THROUGH IMPROPER SERVICING WAVEFORMS TEST CONDITIONS PAL B G COLOR BAR NOR 1 2 38 Vpp 0 8 Vp 5 3 48 3 84 Vpp p 12 Vpp 11 6 Vpp 15 625KHz EXPLODED VIEW 1 14V3 REMARKS MATERIAL 1 4 TRS 4X16 MFZN BK FR HIPS BK PART NAME ey No PART CODE EXPLODED VIEW 2
30. CP 185N C DW9381 N3 DE1 English Russian Arabic note x is the software version Melayu Thailand HIND PINNING SYMBOL DESCRIPTION n u Port 1 3 Not used SCL I2C bus clock line SDA I2C Data line SECAM L out Port 2 0 FM sound PushPull Low AM SECAM L PushPull High AM SECAM L High Impedance OCP Port 3 0 Over Current Protection RF AGC in ADC 1 For program sorting in ATSS High Impedance Key in ADC 2 local key input High impedance S SW ADC 3 Scart Slow switching input VssC P digital ground for controller core and peripheral LED 1 port 0 5 8mA current sinking capability LED 2 port 0 6 8mA current sinking capability VSSA analog ground of teletext decoder and digital ground of TV processor SEC PLL SECAM PLL decoupling VP2 2nd supply voltage TV processor DECDIG decoupling digital supply of TV processor PH2LF phase 2 filter PH1LF phase 1 filter GND3 ground 3 for TV processor DECBG bandgap decoupling AVL n u VDRB vertical drive B output VDRA vertical drive A output IC DESCRIPTION APPENDIX SYMBOL DESCRIPTION IFIN1 IF input 1 IFIN2 IF input 2 IREF Reference current input VSC vertical sawtooth capacitor TUNERAGC tuner AGC output AUDEEM audio deemphasis DECSDEM decoupling sound demodulator GND2 ground 2 for TV processor SNDPLL
31. E LET BSR T0 2 R1 6 4856310300 EYELET BSR T0 2 R1 6 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R1 6 BSR T0 2 R2 3 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4856310600 EYE LET BSR T0 2 R2 3 4857417500 TERM PIN BSR T0 2 R2 3 4 DA IB0214 D2 3 DY 4857417500 TERM PIN DA IB0214 D2 3 DY 4857417500 TERM PIN 4857417500 TERM PIN DA IB0214 D2 3 DY PIN DA IB0214 D2 3 D
32. EXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 CEXF1E101V C ELECTRO CEXF1E101V C ELECTRO 25V RSS 100MF 6 3 11 CEXF1E101V C ELECTRO TP TP 25V RSS 100MF 6 3X11 TP TP TP 25V RSS 100MF 6 3X11 CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP CEXF1C221V C ELECTRO 16V RSS 220MF 8X11 5 TP CMXL2E104K C MYLAR 250V MEU 0 1MF K CCXB1H561K C CERA 50V B 560PF K TAPPING CEXD1H229F C ELECTRO 50V RND 2 2MF 5X11 TP CCXB1H102K C CERA 50V B 1000PF K TAPPING 4857415001 CLIP FUSE PFC5000 0702 4857415001 CLIP FUSE PFC5000 0702 58C9430599 COIL CHOKE AZ 9004Y 94MH TKTC3198Y TR KTC3198Y TKTC3207 TR KTC3207 TP ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK TKTC3198Y TR KTC3198Y TKTA1266Y TR KTA1266Y TP TKTC3198Y TR KTC3198Y TKTC3198Y TR KTC3198Y TKTA1266Y TR KTA1266Y TP TKTA1266Y TR KTA1266Y TP TKTC3198Y TR KTC3198Y TKTA1266Y TR KTA1266Y TP TKTC3205Y TR KTC3205Y TP TKTA1266Y TR KTA1266Y TP TKTC3198Y TR KTC3198Y TKTC3198Y TR KTC3198Y TKTC3198Y TR KTC3198Y TKTC3198Y TR KTC3198Y TKTC3198Y TR KTC3198Y 5550101090 SW TACT THVH472GCA 5550101090 SW
33. FAX 82 2 360 7877 APPENDIX FUNCTIONAL DESCRIPTION For CP 185C N FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR Vision IF amplifier The vision IF amplifier can demodulate signals with positive and negative modulation The PLL demodulator is completely alignment free The VCO of the PLL circuit is internal and the freguency is fixed to the reguired value by using the clock freguency of the p Controller Teletext decoder as a reference The setting of the various frequencies is made by the controlling software in subaddress 27H 33 9 MHz for system L and 38 9 MHz for all other systems Because of the internal VCO the IF circuit has a high immunity to EMC interference 1 IF demodulator and audio amplifier The FM demodulator is realised as a narrow band PLL with external loop filter which provides the necessary selectivity without using an extra band pass filter To obtain good selectivity a linear phase detector and a constant input signal amplitude are required For this reason the intercarrier signal is internally supplied to the demodulator via a gain controlled amplifier and AGC circuit The nominal frequency of the demodulator is set via a gain controlled amplifier and AGC circuit The nominal frequency of the demodulator is tuned to the required frequency 5 5 6 0 6 5 MHz by means of a calibration circuit which uses the clock frequency of the microcontroller as a reference Selection of the required frequency is done by the controlling sof
34. HM J RD 2Z751J R CARBON FILM 1 2 750 OHM J RD AZ102J R CARBON FILM 1 6 1K OHM J RD AZ473J R CARBON FILM 1 6 47K OHM J RD AZ102J R CARBON FILM 1 6 1K OHM J RD 42223J R CARBON FILM 1 4 22K OHM J RD 4Z303J R CARBON FILM 1 4 30K OHM J RD 2Z103J R CARBON FILM 1 2 10K OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ332J R CARBON FILM 1 6 3 3K OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ332J R CARBON FILM 1 6 3 3K OHM J RD AZ681J R CARBON FILM 1 6 680 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ153J R CARBON FILM 1 6 15K OHM J RD AZ393J R CARBON FILM 1 6 39K OHM J RD AZ102J R CARBON FILM 1 6 1K OHM J RD AZ273J R CARBON FILM 1 6 27K OHM J RD AZ183J R CARBON FILM 1 6 18K OHM J RD AZ391J R CARBON FILM 1 6 390 OHM J RD AZ221J R CARBON FILM 1 6 220 OHM J RD AZ331J R CARBON FILM 1 6 330 OHM J RD AZ561J R CARBON FILM 1 6 560 OHM J RD AZ104J R CARBON FILM 1 6 100K OHM J RD 42479J R CARBON FILM 1 4 4 7 OHM J RD AZ431J R CARBON FILM 1 6 430 OHM J RD AZ221J R CARBON FILM 1 6 220 OHM J RD AZ470J R CARBON FILM 1 6 47 OHM J RD AZ102J
35. IRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM 5CPZ100K04 COIL PEAKING 10UH 10 5MM K LALO4TB 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 5CPZ100K04 COIL PEAKING 10UH 10 5
36. MM K LALO4TB 5CPZ829K02 COIL PEAKING 8 2UH K AXIAL 3 5MM 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM 5CPZ100K02 COIL PEAKING 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM 10UH K AXIAL 3 5MM 5MC0000100 COIL BEAD HC 3550 5MC0000100 COIL BEAD HC 3550 RD AZ473J R CARBON FILM 1 6 47K OHM J RD AZ472J R CARBON FILM 1 6 4 7K OHM J RD AZ123J R CARBON FILM 1 6 12k OHM J RD AZ104J R CARBON FILM 1 6 100K OHM J RD AZ392J R CARBON FILM 1 6 3 9K OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD AZ101J R CARBON FILM 1 6 100 OHM J RD 22332J R CARBON FILM 1 2 3 3K OHM J RD 2Z109J R CARBON FILM 1 21 OHM J RD 22331J R CARBON FILM 1 2 330 OHM J RD 4Z564J R CARBON FILM 1 4 560K OHM J RD 4Z102J R CARBON FILM 1 4 1K OHM J RD 4Z102J R CARBON FILM 1 4 1K OHM J RD 42473J R CARBON FILM 1 4 47K OHM J RN 421501F R METAL FILM 1 4 1 50K OHM F RN 421501F R METAL FILM 1 4 1 50K OHM F RD AZ272J R CARBON FILM 1 6 2 7K OHM J RD 4Z562J R CARBON FILM 20 1 4 5 6K OHM J PART CODE PART NAME DESCRIPTION ELECTRICAL PARTS LIST REMARK RD 42472J R CARBON FILM 1 4 4 7K O
37. PPLICATION HINTS For 14 5V supply and 8Q speaker application its maximum power dissipation is about 1 8W Assumming that max ambient temperature is 70 C the required thermal resistance of the device mounted on the PCB with a dissipating area must be equal to 150 70 1 8 44 4 C W Junction to pin thermal resistance of the package is about 15 C W That means external heat sink of about 30 C C W is required Cu ground plane of PCB can be used as heat dissipating means 16 IC DESCRIPTION APPENDIX 3 TDA8357J Vertical Amplifier The TDA8357J is a power circuit for use in 90 TV systems for field frequencies of 25 to 200Hz and 16 9 picture tubes The cir cuit provides a DC driven vertical deflection output circuit operating as a highly efficient class G system Due to the full bridge output circuit the deflection coils can be DC coupled The IC is constructed in a Low Voltage DMOS process that combines Bipolar CMOS and DMOS devices MOS transistors are used in the output stage because of the absence of second breakdown Features Few external components Highly efficient fully DC coupled vertical output bridge circuit Short rise and fall time of the vertical flyback switch Guard circuit Temperature thermal protection High EMC because of common mode inputs IC DESCRIPTION APPENDIX Pinning Symbol Description V xpos Vi pos input voltage positive Vignes Vi neg input voltage negative Vp
38. RE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING RD AZ221 J R CARBON FILM 1 6 220 OHM J 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING 85801 065GY W
39. RUCTIONS 5 1 Service mode 22 2 5 2 Microcontroller configuration SO nto quseque pues i 5 3 TV SET Alignment cfe teh vrl Uh see e ER prid ex re er FEE dc Sate 5 6 SCHEMATIC DIAGRAM due atte edite Bad din ettet m k 7 EXPLODED VIEW 0 oe 8 10 PRINTED CIRCUIT 11 SERVICE PABTS EIST AG te aas 12 23 The different parts 24 APPENDIX Appendix is provide only by internet http svc dwe co kr FUNCTIONAL DESCRIPTION remettre 1 6 IC DESCRIPTION roe Dod mox Ea edit 7 20 SAFETY INSTRUCTION WARNING Only competent service personnel may carry out work involving the testing or repair of this eguipment X RAY RADIATION PRECAUTION Excessive high voltage can produce potentially hazardous X RAY RADIATION To avoid such hazards the high voltage must not exceed the specified limit The nominal value of the high voltage of this receiver is 22 23 kV 14 24 26 kV 20 21 at max beam current The high voltage must not under any circumstances exceed 27 5 kV 14 20 29KV 21 Each time a receiver requires servicing the high voltage should be checked It
40. S M No TCP185C NEF Service Manual Color Television CHASSIS CP 185N and CP 185C Specification Version Pal multi system TV Standard PAL SECAM B G D K H NTSC AV Only Sound system Mono Power consumption 1 Speaker 14 49W 20 60W 21 68W 28peaker 14 57W 20 64W 21 74W Speaker 3W 8 Ohm o 7 5W 8 Ohm Teletext system Option Aerial Input 75 Ohm unbalanced Channel coverage off air channels S cable channels and hyperband Tuning system Ferquency synthesiser tuning system Visual screen size 14 34cm 20 48 21 51 Channel indication On screen display Program selection 100 Programmes Auxiliary Outpup Terminal RCA jack Audio input and Vidio input ERUO SCART Jack Audio Video and R G B input Sloe and fast swtching SVHsin Audio Video jack on front of cabinet in common connection with EURO SCART Headphone jack on front of cabinet Remote control R 40A10 None teletext AAA Battery type R 40A01 With teletext AAA Battery type R 44C05 With teletext AA Battery type DAEWOO ELECTRONICS CO LTD http svc dwe co kr Sep 2001 TABLE OF CONTENTS SAFETY INSTRUCTION aded imi pn 2 SPECIFICATIONS bed ede ZO 3 21 Bin EURO SGART Sie ee RP D E E de peed de PSE SEs pst i ue eq det 3 CIRCUIT BLOCK eee 4 ALIGNMENT INST
41. Y PIN 4859291625 CONN WAFER YW025 03 STICK RS02Z129JS R M OXIDE FILM 2W 1 2 OHM J SMALL RS01Z279J R M OXIDE FILM 1W 2 7 OHM J TAPPING 85022102 5 R M OXIDE FILM 2W 1K OHM J SMALL RS02Z473JS R M OXIDE FILM 2W 47K OHM J SMALL RSO2Z180JS R M OXIDE FILM 2W 18 OHM J SMALL RS02Z101JS R M OXIDE FILM 2W 100 OHM J SMALL RSO2Z560JS R M OXIDE FILM 2W 56 OHM J SMALL PTMPJRD435 PCB MAIN RADIAL AS DTA 21V1MZ CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 CEXF1E470V C ELECTRO CEXF1H100V C ELECTRO 5X11 TP 25V RSS 47MF 5X11 TP 50V RSS 10MF 5X11 TP CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP CEXF1E221V C ELECTRO 25V RSS 220MF 8X11 5 TP CMXM2A104J C MYLAR 100V 0 1MF J TP CMXM2A104J C MYLAR 100V 0 1MF J TP CEXF2C229V C ELECTRO 160V RSS 2 2MF 8X1 1 5 TP CMXM2A104J C MYLAR 100V 0 1MF J TP CXSL2H470J CCERA 500V SL 47PF J TAPPING CMXM2A104J C MYLAR 100V 0 1MF J TP CCXB1H102K CCERA 50V B 1000PF K TAPPING CEXF1H478V C ELECTRO 50V RSS 0 47 MF 5X11 CEXF1H100V C ELECTRO 50V RSS 10ME 5X11 TP ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP CMXM2A332J C MYLAR 100V 3300PF J TP CEXF1E470V C ELECTRO
42. ers 4 WST Character sets GO G2 in single device e g Latin Cyrillic Greek Arabic G1 Mosaic graphics Limited G3 Line drawing characters WST Character sets and Closed Caption Character set in single device Data Capture The Data Capture section takes in the analogue Composite Video and Blanking Signal CVBS and from this extracts the required data which is then decoded and stored in memory The extraction of the data is performed in the digital domain The first stage is to convert the analogue CVBS signal into a digital form This is done using an ADC sampling at 12MHz The data and clock recovery is then performed by a Multi Rate Video Input Processor MulVIP From the recovered data and clock the following data types are extracted WST Teletext 625 525 Closed Caption VPS WSS The extracted data is stored in either memory DRAM via the Memory Interface or in SFR locations IC DESCRIPTION APPENDIX Data Capture Features Video Signal Ouality detector Data Capture for 625 line WST Data Capture for 525 line WST Data Capture for US Closed Caption Data Capture for VPS data PDC system A Data Capture for Wide Screen Signalling WSS bit decoding Automatic selection between 525 WST 625WST Automatic selection between 625WST VPS on line 16 of VBI Real time capture and decoding for WST Teletext in Hardware to enable optimised microprocessor throughput 10 pages stored On Chip Inventory of transmit
43. ing a serial bus This bus is controlled by dedicated hardware which uses a simple handshake system for software synchronisation For compatibility reasons and possible re use of software blocks the TV processor is controlled by 20 bus The TV processor control registers cannot be read Only the status registers can be read Read address 8A The SECAM decoder contains an auto calibrating PLL demodulator which has two references via the divided 12 MHz reference frequency obtained from the u Controller which is used to tune the PLL to the desired free running frequency and the bandgap reference to obtain the correct absolute value of the output signal The VCO of the PLL is calibrated during each vertical blanking period when the IC is in search or SECAM mode The base band delay line TDA 4665 function is integrated This delay line is also active during NTSC reception to obtain a good suppression of cross colour effects The demodulated colour difference signals are internally supplied to the delay line FUNCTIONAL DESCRIPTION APPENDIX RGB output circuit and black current stabilization In the RGB control circuit the signal is controlled on contrast brightness and saturation The ICs have a linear input for external RGB signals The signals for OSD and text are internally supplied to the control circuit The output signal has an amplitude of about 2 Volts black to white at nominal input signals and nominal settings of the various controls
44. ly Voltage Output Put Peak Current 1 5 Operating Temperature Range 0to 70 Junction Temperature 150 Storage Temperature Range 40 to 125 PIN CONNECTION Top View Vs 1 P GND OUT 2 P GND SVR 3 P GND IN 4 P GND N C 5 P GND S GND 6 P GND N C 7 P GND N C 8 P GND D98AU829 Rth with on Board Sguare heat Sink vs Copper Area Example of heatsink using PC board copper THERMAL RESISTANCE JUNCTION TO AMBIENT C W ON BOARD HEAT SINK AREA sg cm IC DESCRIPTION APPENDIX THERAML DATA Symbol Parameter Rth j amb Thermal Rasistance junction to ambient Rth j case Thermal Resistance Junction to case ELECTRICAL CHARACTERISTICS Tamb 25 C Vs 14 5V RL 8Q f 1KHz nuless otherwise specified Vs Supply Voltage Range 5 18 V ls Quiescent Current 23 35 mA Isb Stand By Current Pin 3 shorted to GND 0 3 mA Vo Quiescent Output Voltage 75 V Av voltage Gain 31 33 dB RIN Input Impedance 50 100 KQ Po Output Power THD 10 2 7 3 W THD Distortion Po 1W 0 1 0 3 SVR Supply Voltage Rejection Vripple 150mVrms 50 dB Fripple 1KHz EI Input Noise Voltage Rg 10KQ BW 20Hz to 20KHz 5 10 5 Stand By Enable Voltage 1 V Figure1 Application Circuit 0 Vs 14 5V C4 100uF C5 470uF C10 1uF N 010 STAND BY 03 P GND D98AU828 A
45. n the Transmitted Page Table TPT and Subtitle Page Table SPT Data Capture for 525 625 line WST VPS PDC system A and Wide Screen Signalling WSS bit decoding Automatic selection between 525 WST 625 WST Automatic selection between 625 WST VPS on line 16 of VBI Real time capture and decoding for WST Teletext in Hardware to enable optimised processor throughput Automatic detection of FASTEXT transmission Real time packet 26 engine in Hardware for processing accented G2 and G3 characters Signal quality detector for video and WST VPS data types Comprehensive teletext language coverage Full Field and Vertical Blanking Interval VBI data capture of WST data Display Teletext and Enhanced OSD modes Features of lever 1 5 WST Serial and Parallel Display Attributes Single Double Quadruple Width and Height for characters Scrolling of display region Variable flash rate controlled by software Enhanced display features including overlining underlining and italics Soft colours using CLUT with 4096 colour palette Globally selectable scan lines per row 9 10 13 16 and character matrix 12x10 12x13 12x16 VxH Fringing Shadow selectable from N S E W direction Fringe colour selectable Meshing of defined area Contrast reduction of defined area Cursor Special Graphics Characters with two planes allowing four colours per character 32 software redefinable On Screen display charact
46. ocessing The chroma band pass and trap circuits including the SECAM cloche filter are realised by means of gyrators and are tuned to the right frequency by comparing the tuning frequency with the reference frequency of the colour decoder The luminance delay line and the delay cells for the peaking circuit are also realised with gyrators The circuit contains a black stretcher functi on which corrects the black level for incoming signals which have a difference between the black level and the blanking level Colour decoder The ICs can decode PAL NTSC and SECAM signals The PAL NTSC decoder does not need external reference crystals but has an internal clock generator which is stabilised to the required frequency by using the 12 MHz clock signal from the referenc oscillator of the u Controller Teletext decoder The Automatic Colour Limiting ACL circuit switchable via the ACL bit in subaddress 2OH prevents oversaturation occurring when signals with a high chroma to burst ratio are received The ACL circuit is designed such that it only reduces the chroma signal and not the burst signal This has the advantage that the colour sensitivity is not affected by this function SOFTWARE CONTROL The CPU communicates with the peripheral functions using Special function Registers SFRS which are addressed as RAM locations The registers for the Teletext decoder appear as normal SFRs in the u Controller memory map and are written to these functions by us
47. press menu key or Std By key In Service Mode press OK to the microcontroller i e the 2 bus is free and the set can be controlled by external equipment Press OK again to allow the microcontroller to control the set again Microcontroller configuration Tuner Option Tuner maker DAEWOO SAMSUNG LIPS tuner internal AGC PHILIPS Video processor AGC TV set Alignment 1 G2 alignment Set TV in NORMAL mode TV in AV mode without video signal Black screen TV preset with WP Red WP Green and WP Blue equal to 32 TV preset with Black R Black G equal to 8 Adjust screen volume on FBT such that the highest cathode cut off voltage measured on CRT board is Vcut off 5V Screen size Vcut off 14 115V 20 amp 21 125V 2 White balance Select a dark picture and adjust Black G and Black R to the desired colour temperature Select a bright picture and adjust WP Red WP Green WP Blue to the desired colour temperature ALIGNMENT INSTRUCTIONS 3 Focus Adjust the Focus volume on FBT to have the best resolution on screen 4 Vertical geometry Adjust the Vertical Amplitude Shift S Correction and Slope to compensate for vertical distortion 5 Horizontal picture centering Adjust H Shift to have the picture in the center of the screen 7 AGC Adjust the antenna signal level to 68dBUV 2 for Daewoo tuner 63dBuV 1 for Philips tuner Set RF AGC to
48. s 3 Source switching Video The TDA9361 TDA9381 has only one external video input The SCART video in pin 20 is connected to the front RCA video input The controlling software via 2 bus selects the signal source Video signal from tuner Pin 40 External video External SVHS from SCART The sound source switching is done in the video processor part and in the AM demodulator by the u Controller via 2 bus The video processor pin 28 has multiple functions and provides in this applicationbus Deemphasis time constant Audio monitor output External AM input Deemphasis time constant The time constant is given by the capacitor C504 needer to obtain the 54us time time constant for standarad PAL signal Audio monitor output the nominal output signal is 500 mVrms for all standards The signal is also internally connected through to the audio switch This signal is not controlled by the volume setting and can be used for SCART audio output The signal is buffered to avoid influencing the deemphasis time constant and to adjust the output level External AM input By software the deemphasis pin can be converted into an input pin External AM signal for SECAM is directly connected to this pin In this configuration the FM sound is internally muted DC level remains at 3Vdc An external sound signal of 500mVrms is applied to pin 35 via a coupling capacitor The input impedance of this pin is 25
49. ted Teletext pages stored in the Transmitted Page Table TPT and Subtitle Page Table SPT Automatic detection of FASTEXT transmission Real time packet 26 engine in Hardware for processing accented G2 and G3 characters Signal quality detector for WST VPS data types Comprehensive Teletext language coverage Full Field and Vertical Blanking Interval VBI data capture of WST data APPENDIX IC DESCRIPTION 5 8 SOUND k g TRAP T a T z h 8 SDAB z 43 3V TUNERAGC 219 E E By 6 ay lt Pal wiesa M VISION IF 685 SOUND IF 8 8 n ALIGNMENT FREE ENHANCED SRANSCEINCE LL DEMOD AGC AFG 655 MIXER 80651 CPU filing HENORY VIDEO AMP AM DEMODULTOR VIDEO SWITCH CVBS Y FE VIDEO IDENT LUMA DELAY PEAKING BLACK STRETCH TELETEXT ACOUISITION TELETEKT OSD ROM RAM DISPLAY CONTIVBRIGHTN 51 PAL SECAM NTSC OSDITEXT INSERT 52 DECODER E HN SYNC SEP ERNE RGB YUV INSERT y p EW GEOMETRY RGB YUV MATRIX H OSG PLL GEOMETRY SATURATION YUV RGB MATRIX I l I EWD RA G Y BU BL V DRIvE 10 IC DESCRIPTION APPENDIX IC marking and version Chassis IC marking line 3 OSD languages Text CP 185 DW9361 N1 3 DE1 English Russian English Russian note x is the software version g 9 Arabic Melayu Arabic Melayu
50. tionality as the general I O pins but in addition their current source and sink capacity is 8 mA instead of 4 mA These pins are used for driving LED s via a series current limiting resistor Controller I O pin configuration and function table configuration description Stand by TV on n u High impedance High impedance not used SCL Open Drain Open Drain Serial clock line SDA Open Drain Open Drain Serial data line SECAM L High impedance Push Pull High impedance SIF filter switching AM FM switching OCP High impedance High impedance Over Current Protection Switch the set OFF if the voltage on this pin is lt 2 3V RF AGC in High impedance High impedance Used during ATSS to measure 7RF signal level Key in High impedance High impedance Local keyboard input S SW High impedance High impedance external video switch Red LED High impedance Open Drain Green LED Open Drain High impedance Audio mute Push Pull High impedance FUNCTIONAL DESCRIPTION APPENDIX 5 SECAM L L sound switching circuit The microcontroller pin 4 is a three levels output The voltage and configuration of this port is described below Sound mode Port configuration Voltage FM Push Pull Internally shorted to ground AML Push Pull Pull up to 3 3V AM L High Impedance Fixed by R511 R156 R157
51. tware Video switches The video switch has one input for an external CVBS or Y C signal The selected CVBS signal can be supplied to pin 38 the IF video output The selection between both signals is realised by the controlling software in subaddress 22H The video ident circuit is connected to the selected signal This ident circuit is independent of the synchronisation Synchronisation circuit The IC contains separator circuits for the horizontal and vertical sync pulses and a data slicing circuit which extracts the digital teletext data from the analogue signal The horizontal drive signal is obtained from an internal VCO which is running at a frequency of 25 MHz This oscillator is stabilised to this frequency by using a 12 MHz signal coming from the reference oscillator of the u Controller Teletext decoder The horizontal drive is switched on and off via the soft start stop procedure This function is realised by means of variation of the TON of the horizontal drive pulses FUNCTIONAL DESCRIPTION APPENDIX The vertical synchronisation is realised by means of a divider circuit The vertical ramp generator needs an external resistor and capacitor For the vertical drive a differential output current is available The outputs are DC coupled to the vertical output stage The following geometry parameters can be adjusted Horizontal shift Vertical amplitude Vertical slope S correction Vertical shift Chroma and luminance pr
52. z wide The minimum frequency step of the tuner is 62 5 kHz This AFC function is disabled when a program is tuned using the direct frequency entry or after fine tuning adjustment Therefore it is recommended to tune a channel with the TV search function manual or ATSS or by using the direct channel entry to enable the Automatic Frequency Control FUNCTIONAL DESCRIPTION APPENDIX For SECAM L and L the TDA9361 TDA9381 is switched to positive modulation via 26 bus SECAM L transmission only occur in VHF band and have their picture and sound carrier interchanged compared to SECAM L and PAL B G channels For SECAML the picture carrier is situated at 33 9 MHz and the AM sound carrier at 40 40 MHz The IF PLL reference is tuned from 38 9 to 33 9 MHz this is done via I2C Bus and the SIF filter is switched from channel 2 to channel 1 this is done by pin 4 of TDA 9361 The tuner AGC time constant is slower for positive than for negative modulation because the TDA9361 reduces its AGC current To make the AGC time constant even slower an extra series resistor R103 is added To prevent IF overload when jumping from a very strong transmitter to a weak transmitter a diode D101 has been added The SAW filter SF1 has a double Nyquist slope at 38 9 MHz and 33 9 MHz needed for this multistandard application The disadvantage of this choice is that a 5 5 MHz trap filter 2501 is needed to suppress the residual sound carrier in the video for B G signal

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