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SERVICE MANUAL

CTW3250S-1

76CM WS CTV

CHASSIS : 11AK33

SEP02

CTW3250S-1

Содержание CT-W3250S-1

Страница 1: ...SERVICE MANUAL CTW3250S 1 76CM WS CTV CHASSIS 11AK33 SEP02 CTW3250S 1 ...

Страница 2: ...11 AK 33 Service Manual ...

Страница 3: ...ER TDA 9181_________________________________________10 10 POWER SUPPLY SMPS _______________________________________10 11 POWER FACTOR CORRECTION ________________________________10 12 MICROCONTROLLER SDA555X ________________________________10 12 1 General Features ________________________________________________ 10 12 2 External Crystal and Programmable clock speed______________________ 10 12 3 Mic...

Страница 4: ..._______________________________ 21 16 10 1 Description ________________________________________________________21 16 10 2 Applications _______________________________________________________21 16 10 3 General features ____________________________________________________21 16 11 ST24C08 ______________________________________________________ 21 16 11 1 General description ___________________________...

Страница 5: ...hich is higher then 66 dB The sensitivity of the circuit is comparable The video signal is demodulated by means of an alignment free PLL carrier regenerator with an internal VCO This VCO is calibrated by means of a digital control circuit which uses the clock frequency of the m Controller Teletext decoder as a reference The frequency setting for the various standards 33 4 33 9 38 38 9 45 75 and 58...

Страница 6: ...sed as drive signal for a PIP decoder If the Y C 3 signal is selected for one of the outputs the luminance and chrominance signals are added so that a CVBS signal is obtained again 2 3 Sound Circuit The sound IF amplifier is similar to the vision IF amplifier and has a gain control range of about 66 dB The AGC circuit is related to the SIF carrier levels average level of AM or FM carriers and ensu...

Страница 7: ...ndition is detected the horizontal output drive signal will be switched off via the slow stop procedure but it is also possible that the drive is not switched off and that just a protection indication is given in the I 2 C bus output bytes The choice is made via the input bit PRD When PRD 1 and an overvoltage is detected the drive is switched off and the STB bit is set to 0 Switching on of the dri...

Страница 8: ...um stretching is obtained when signals with a low video level are received For bright pictures the stretching is not active Dynamic skin tone flesh control This function is realised in the YUV domain by detecting the colourss near to the skin tone The correction angle can be controlled via the I2 C bus 2 8 RGB output circuit and black current stabilisation The ICs have a very flexible control circ...

Страница 9: ... the black current control circuit generates a fixed beam current This current ensures that the picture tube capacitance is discharged During the switch off period the vertical deflection can be placed in an overseen position so that the discharge is not visible on the screen 2 9 EAST WEST OUTPUT STAGE In order to obtain correct tracking of the vertical and horizontal EHT correction the EW output ...

Страница 10: ... input Each input can be used as a normal input or as a MAC or Chroma input with external Resistor Bridge All the switching possibilities are changed through the BUS Driving 75ohm load needs an external resistor It is possible to have the same input connected to several outputs 5 MULTI STANDARD SOUND PROCESSOR The MSP 34x0D is designed to perform demodulation of FM or AM Mono TV sound Alternativel...

Страница 11: ...WER SUPPLY SMPS The DC voltages required at various parts of the chassis are provided by an SMPS transformer controlled by the IC MC44608 which is designed for driving controlling and protecting switching transistor of SMPS The transformer produces 150V for FBT input 14V for audio output IC S 3 3 S 5V and 8V for TDA8885 11 POWER FACTOR CORRECTION The MC33260 is a controller for Power Factor Correc...

Страница 12: ...rs per DRCS Character One out of Eight Colours for Foreground and Background Colours for 1 bit DRCS and 12 6 ROM Characters Shadowing Contrast Reduction Pixel by Pixel Shiftable Cursor With up to 4 Different Colours Support of Progressive Scan and 100 Hz 3 X 4Bits RGB DACs On Chip Free Programmable Pixel Clock from 10 MHz to 32MHz Pixel Clock Independent from CPU Clock Multinorm H V Display Synchr...

Страница 13: ...F8583 MC33260 STV9379 MSP34XXG LM358N 16 1 TDA8885 16 1 1 GENERAL DESCRIPTION The TDA 8885 is I 2 C bus controlled singlechip TV processors which are intended to be applied in PAL NTSC and multi standard television receivers These ICs are largely compatible with the TDA 884X 5X series Also in this IC family we have versions with a mono intercarrier FM sound channel and versions with a QSS IF ampli...

Страница 14: ...der NTSC decoder Additional RGB YUV input Black stretch and Blue stretch Dynamic skin tone control and coring on complete video signal Video dependent coring and Colour Transient Improvement White stretch and green enhancement Horizontal geometry EW Horizontal and vertical zoom Horizontal parallelogram and angle correction 2 nd CVBS output Additional YUV RGB input with saturation control 2 I 2 C b...

Страница 15: ...lyback input sandcastle output 58 phase 2 filter 59 phase 1 filter 60 output switch 2 I 2 C 61 ground 2 filters CTI control and geometry 62 east west drive output Automatic Volume Levelling 63 vertical drive B output 64 vertical drive A output SYMBOL PARAMETER MIN TYP MAX UNIT Supply VP supply voltage 8 0 V IP supply current tbf mA Input voltages Vi VIF rms video IF amplifier sensitivity RMS value...

Страница 16: ...chanical dimensions and pinning Compact size PINNING PIN VALUE 1 Gain control voltage AGC 4 0V Max 4 5V 2 Tuning voltage 3 High band switch 5V Min 4 75V Max 5 5V 4 Mid band switch 5V Min 4 75V Max 5 5V 5 Low band switch 5V Min 4 75V Max 5 5V 6 Supply voltage 5V Min 4 75V Max 5 5V 7 Not connected 8 Not connected 9 Not connected 10 Symmetrical IF output 1 11 Symmetrical IF output 2 Bandswitching tab...

Страница 17: ... Internal address can be changed by pin 7 voltage 8 inputs CVBS RGB Mac CHROMA 6 Outputs Possibility of MAC or chroma signal for each input by switching off the clamp with an external resistor bridge Bus controlled 6 5dB gain between any input and output 55dB crosstalk at 5MHz Fully ESD protected PINNING PIN VALUE 1 Input Max 2Vpp Input Current 1mA Max 3mA 2 Data Low level 0 3V Max 1 5V High level...

Страница 18: ...Q The TDA6108Q consists of three monolithic video output amplifiers The amplifier can be seen as an operational amplifier with negative feedback The advantage of negative feedback is that the amplifier characteristics do not play an important role up to certain frequencies The internal flash diodes protect the amplifiers against flash over in the picture tube The only protections required at the c...

Страница 19: ...gh flexibility and reliability The device also features a very high efficiency stand by management consisting of an effective Pulsed Mode operation This technique enables the reduction of the stand by power consumption to approximately 1W while delivering 300mW in a 150W SMPS Integrated start up current source Lossless off line start up Direct off line operation Fast start up 16 7 2 General Featur...

Страница 20: ...e 3 3 V 12 CVBS input 1 Vpp 13 Analogue supply voltage 2 5 V 14 Analogue ground 15 Wake Interrupt Low Level 0V High Level 3 3 V 16 AV 1 status input Low Level 0V High Level 3 3 V 17 AV 2 status input Low Level 0V High Level 3 3 V 18 Shortcut protection Low Level 0V High Level 3 3 V 19 SAND input Low Level 0V High Level 3 3 V 20 ODD EVEN output Low Level 0V High Level 3 3 V 21 DVD 12 V Sense Low Le...

Страница 21: ...lect input Pin 9 FSC color subcarrier input signal Pin 10 SYS2 standart select 2 input Pin 11 SYS1 standart select 1 input Pin 12 Y CVBS1 luminance or CVBS input signal Pin 13 analogue GND Pin 14 Y CVBSout luminance or CVBS output signal Pin 15 OUTSEL output switch select input Pin 16 Cout chrominance output signal 16 9 1 General Features One chip multistandart adaptive comb filter Cross luminance...

Страница 22: ...V pd 1 6 kV Rated isolation voltage RMS includes DC V IOWM 600 V RMS 848 V peak Rated recurring peak voltage repetitive V IORM 600 V RMS 16 10 3 General features CTR offered in 9 groups Isolation materials according to UL94 VO Pollution degree 2 DIN VDE 0110 resp IEC 664 Climatic classification 55 100 21 IEC 68 part 1 Special construction Therefore extra low coupling capacity of typical 0 2 pF hig...

Страница 23: ...ormance high signal to noise ratio high slew rate low distortion Large output voltage swing PINNING PIN VALUE 1 Output A Voltage swing Min 0 75V Max 4 25V 2 Inverting input A Vo clip Min 1400mVrms 3 Non inverting input A 2 5V 4 Ground 0V 5 Non inverting input B 2 5V 6 Inverting input B Vo clip Min 1400mVrms 7 Output B Voltage swing Min 0 75V Max 4 25V 8 Positive supply 5V Min 3 0V Max 7 0V 16 13 P...

Страница 24: ...SDA 5 serial data line SCL 6 serial clock line INT 7 open drain interrupt output active LOW VDD 8 positive supply 16 14 MC33260 16 14 1 General Features Standard Constant Output Voltage or Follower Boost Mode Switch Mode Operation Voltage Mode Latching PWM for Cycle by Cycle On Time Control Constant On Time Operation That Saves the Use of an Extra Multiplier Totem Pole Output Gate Drive Undervolta...

Страница 25: ...s according to the German or Korean terrestrial specs It is also possible to do AM demodulation according to the SECAM system There is AGC for analog inputs 0 14 3Vpp All demodulation and filtering is performed on chip and is individually programmable All digital NICAM standards B G L and I are realised Only one crystal clock 18 432Mhz is necessary External capacitors at each crystal pin to ground...

Страница 26: ...42 Analog reference voltage high voltage part 9 I S clock 43 Analog ground 10 Not connected 44 Volume capacitor MAIN 11 Standby low active 45 Analog power supply 8 0V 12 I C Bus address select 46 Volume capacitor AUX 13 Digital control output 0 47 Scart output 1 left 14 Digital control output 1 48 Scart output 1 right 15 Not connected 49 Reference ground 1 high voltage part 16 Not connected 50 Sca...

Страница 27: ...M1558 LM1458 dual op amp 16 17 4 Features Available in 8 Bump micro SMD chip sized package Internally frequency compensated for unity gain n Large dc voltage gain 100 dB Wide bandwidth unity gain 1 MHz temperature compensated Wide power supply range Single supply 3V to 32V or dual supplies 1 5V to 16V Very low supply current drain 500 µA essentially independent of supply voltage Low input offset v...

Страница 28: ...nt group delay distortion so for an equal delay of the luminance and chrominance signal the delay must be set at a value of 160nS This means the adjustment must be set to the maximum value ADJUST 08 Y Delay NTSC Enter an NTSC colour and black white bar test pattern via RF Adjust Y Delay NTSC till the colour transients on the colour bar of the pattern become as sharper and colours between transient...

Страница 29: ...of the picture frame become parallel to vertical sides of picture tube Check and readjust EW Parabola Width item if the adjustment becomes improper after some other geometric adjustments are done 4 3 EW UPPER CORNER PARABOLA ADJUSTMENT only for 110ø picture tubes ADJUST 19 4 3 EW Corner Parabola Enter a PAL B G test pattern via RF Change EW Upper Corner Parabola till vertical lines at the corners ...

Страница 30: ... remark that some adjustments are fixed to default values in order to get correct geometry in all picture modes 4 3 16 9 Cinema Subtitle Super zoom ...

Страница 31: ... P A U S ET V PIP D V D I N T E R N E TT V S M P S M C4 4 6 0 8 M O T O R O L A A C T I V EP F C M C3 3 2 6 0 M O T O R O L A S O U N DP R O C E S S O R D O L B Y M S P3 4 5 2G V I R T U A LD O L B Y M S P3 4 1 1 G G SN I C A MS T E R E O M S P3 4 1 0G B T S CS T E R E O M S P3 4 3 0 G D O L B YD I G I T A L M S P4 4 5 0 G D P L4 5 1 9 G M A S3 5 2 8 E M I C R O N A S V I D E O S W I T C H T E A6 ...

Страница 32: ...33 AK33F003 0 00 20103273 IC 24C16 R100YD1410101K1101 0 00 20108337 PR IC 33 AK33F006 0 00 20110573 CHS ASSY 33J 11C1K1221331612286 0 00 30000071 CAP MKT 10NF 63V J C122 0 0200 USD C606 30000074 CAP MKT 100NF 63V J C260 C764 C768 C643 C644 0 0400 USD C772 C502 30000075 CAP MKT 100NF 250V K DC C900 C907 0 0900 USD C601 C604 30000076 CAP MKT 100NF 275V M AC C180 0 1400 USD 30000092 CAP MKT 220NF 63V...

Страница 33: ...0PF 50V J SL C111 0 0200 USD 30000283 CAP CER 1NF 50V K B C865 C265 0 0120 USD 30000287 CAP CER 10NF 50V K B C638 0 0100 USD 30000290 CAP CER 10NF 50V Z F C524 C526 C525 C527 0 0120 USD 30000295 CAP CER 100NF 50V Z F C908 C904 0 0300 USD C130 C142 C152 C153 30000296 CAP CER 100NF 100V Z F C623 0 0207 USD 30000316 CAP CER 220NF 25V Z F C642 0 0400 USD 30000323 CAP CER 33NF 50V K B C257 0 0300 USD 3...

Страница 34: ...L 220UF 16V M C149 C150 C147 0 0300 USD 30000383 CAP EL 2200UF 25V M C137 C138 0 0500 USD 30000384 CAP EL 2 2UF 50V M C262 C283 0 0120 USD 30000385 CAP EL 2 2UF 250V M C909 0 4100 USD 30000393 CAP EL 3 3UF 50V M C740 C760 0 0120 USD 30000395 CAP EL 47UF 6 3V M 4 7MM C100 0 0120 USD 30000400 CAP EL 47UF 50V M C148 0 0300 USD 30000402 CAP EL 47UF 100V M C607 0 0300 USD 30000406 CAP EL 47UF 250V M HR...

Страница 35: ...R122 R561 R206 R207 30000460 RES CF 1 4W 100R G R329 0 0127 USD 30000466 RES CF 1 4W 1K J R709 R712 R713 R714 0 0120 USD R287 R536 R608 R650 R148 30000471 RES CF 1 4W 10K J R101 R102 0 0120 USD R501 R513 R611 R130 R629 R279 R506 R113 R298 R626 R505 R159 R918 30000477 RES CF 1 4W 100K J R907 R912 R908 0 0120 USD R145 30000500 RES CF 1 4W 12K J R500 0 0120 USD 30000513 RES CF 1 4W 130K J R128 0 0120...

Страница 36: ...4W 330K J R748 0 0120 USD 30000706 RES CF 1 4W 47R J R323 0 0120 USD 30000712 RES CF 1 4W 470R J R157 0 0120 USD 30000718 RES CF 1 4W 4 7K J R111 0 0120 USD R530 30000719 RES CF 1 6W 4 7K J 0 00 30000729 RES CF 1 4W 470K J R114 0 0114 USD 30000734 RES CF 1 4W 4 7R J R719 R720 0 0114 USD 30000748 RES CF 1 4W 5 6K J R369 0 0114 USD 30000767 RES CF 1 4W 68R J R106 0 0100 USD 30000770 RES CF 1 4W 680R...

Страница 37: ...001178 RES MO 5W 5 1K J R614 0 0614 USD 30001208 RES FUSE 1W 10R J R917 0 1100 USD 30001215 RES FUSE 1W 1R J R617 0 0400 USD 30001232 RES FUSE 1 4W 2 7R J R612 0 0120 USD 30001244 RES FUSE 1 2W 0 47R J R604 R606 J118 0 0079 USD 30001245 RES FUSE 1 4W 0 47R J R652 0 0400 USD 30001257 RES MG 1 2W 4 7M J R118 0 0700 USD 30001259 RES WW 5W 1R J R100 0 0400 USD 30001270 PTC 9 OHM TH100 0 4000 USD 30001...

Страница 38: ...01427 TR BF422 Q900 0 1300 USD 30001428 TR BF423 Q106 0 0312 USD 30001429 TR BUK444 200A Q604 0 4250 USD 30001435 TR BC639 Q600 0 0300 USD 30001441 TR BU2508AF Q602 0 5401 USD 30001452 TR BC327 Q102 0 0400 USD 30001454 TR BC548B Q901 0 0500 USD Q103 Q105 Q101 30001455 TR BC558B Q605 0 0500 USD 30001500 IC LM7808 IC103 0 2800 USD 30001506 IC TL431 IC116 IC601 0 3300 USD 30001518 IC TDA1308 IC704 0 ...

Страница 39: ... BLUE PL200 0 0300 USD 30001833 CONN MALE 2P SIDE BLUE PL120 0 0400 USD 30001835 CONN MALE 3P TOP WHITE PL705 0 0300 USD 30001838 CONN MALE 3P TOP YELLOW PL211 0 0500 USD PL105 30001839 CONN MALE 3P TOP GREEN PL700 0 0500 USD 30001844 CONN MALE 3P SIDE GREEN PL120 0 0600 USD 30001850 CONN MALE 6P TOP WHITE PL903 0 0500 USD PL600 30001855 SOCKET CRT NARROWNECK W GND PL900 0 5100 USD 30001882 RCA JA...

Страница 40: ...PE TR600 0 5300 USD 30002104 LINE FILTER 2X22MH AK16 L107 L108 0 7400 USD 30002174 SWITCH ON OFF 4A 64A 0 3968 USD 30002181 SWITCH TACT S101 S102 S103 S104 S105 0 0600 USD 30002183 RELAY MON15 KI S 212M RL100 1 0900 USD 30002238 CABLE 2 20 R2 6 WO SOCKET AK16 0 0400 USD 30002287 CONN ASSY 7 42 FL KEYBOARD 0 1683 USD 30002335 CONN ASSY 3 60 FC PRE AMP 0 0931 USD 30002349 CONN ASSY 2 90 R2 6 SPK W G...

Страница 41: ...0007708 CAP CER 1NF 1KV K PULSE C540 C182 0 0800 USD C167 30007758 DIODE BRIDGE GBU4M 4A 1000V 150A D132 0 2863 USD 30007771 FIXED COIL 100UH L603 0 1020 USD 30007793 IC STV9379FA IC600 1 2655 USD 30007794 IC TDA7265 IC701 1 6154 USD 30007858 CAP MKT 470NF 275V M AC P 22 5MM C101 0 1547 USD 30008721 IC TDA6108 0 9251 USD 30009085 CABLE 1P R2 6 35 W CLIPS CAB1 0 0343 USD 30009208 CAP CER 470PF 1KV ...

Страница 42: ...L213 L214 L215 L216 30013690 CAP EL 220UF 450V M 105 C116 1 5155 USD 30014059 POWER CORD 2 2MT W FILTER AUST TYPE 1 8483 USD 30014060 CONN ASSY FRONT AV SVHS W FERRITE 0 0000 USD 30014175 TRF FBT 110 AK33 16 9 SLOT TR601 6 0223 USD 30014261 FILTER SAW K3958M Z201 0 7080 USD 30014359 IC MSP3400G SDIP64 IC700 3 7922 USD 30014528 CONN ASSY 2 100 R2 6 SPK W BL CONN 0 0000 USD 30014610 PIN F 24P 2 5MM ...

Страница 43: ...X ASSY 8270 71 3250 51 1 3133 USD 20013967 SNOW BOX TOP 8270 71 0 4332 USD 20013968 SNOW BOX BOTTOM 8270 71 0 4332 USD 20050372 LENS 3250 I 0 1874 USD 20050376 LENS LED 3250 51 I 0 1790 USD 20061521 BUTTON ASSY 3250 SILVER P 0 00 20061522 BUTTON FUNCTION 3250 EKO GRAY I 0 00 20061523 BUTTON ON OFF 3250 EKO GRAY I SM BASKI 0 2277 USD 20061524 BUTTON FUNCTION 3250 SILVER P 0 2313 USD 20061525 BUTTON...

Страница 44: ...USD 40005467 LENS RC2040 I 0 0309 USD 40006432 MOUNTING BUTTON MB 10 0 0213 USD 40007645 BRACKET RUBBER FOOT L121003 0 0355 USD 40007992 SPACER SUPPORT PINGOOD SCC 19 A 0 0319 USD 40010894 ADJUSTABLE BOOS 84XX NON EC 0 00 60000927 CRYSTAL PS NATURAL 0 0120 USD ARTWORK 20013018 LBL BCK CVR ASSY TV WO UL 0 0130 USD 20079973 R C 2040 NOBRAND SILVER P F 1 8678 USD 20105820 LBL BCK CVR TEAC CTW3250S 1 ...

Страница 45: ...50025239 WARRANTY CARD TEAC ENG 3 0 00 50025305 LBL SERVICE TEAC 4 AUST 0 00 50029817 I B TEAC CTW3250S PLL 5533 2040 ENG 0 00 50030217 CARTON BOX TEAC CTW3250S SILVER 33 0 00 ...

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