Teac CT-W2850S1 Service Manual Download Page 36

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Summary of Contents for CT-W2850S1

Page 1: ...SERVICE MANUAL CTW2850S1 16 19 CTV 11AK33 CHASSIS JUN03 SERVCTW2850S1...

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

Page 3: ...R TDA 9181_________________________________________10 10 POWER SUPPLY SMPS _______________________________________10 11 POWER FACTOR CORRECTION ________________________________10 12 MICROCONTROLLER SD...

Page 4: ...______________________________ 21 16 10 1 Description ________________________________________________________21 16 10 2 Applications _______________________________________________________21 16 10 3...

Page 5: ...ich 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...

Page 6: ...ed 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 Th...

Page 7: ...dition 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...

Page 8: ...m 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 b...

Page 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...

Page 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 externa...

Page 11: ...ER 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 switch...

Page 12: ...s 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 Dif...

Page 13: ...8583 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 standa...

Page 14: ...er 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 stre...

Page 15: ...yback 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...

Page 16: ...hanical 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...

Page 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 B...

Page 18: ...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...

Page 19: ...h 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...

Page 20: ...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 L...

Page 21: ...ct 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 CVBS...

Page 22: ...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 mater...

Page 23: ...rmance 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 No...

Page 24: ...DA 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 Boo...

Page 25: ...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...

Page 26: ...2 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 Volum...

Page 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 MH...

Page 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...

Page 29: ...f 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 E...

Page 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...

Page 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...

Page 32: ...24C16 R100YD1410101K1101 0 00 20103274 CHS ASSY 33J 11C1K12213316122B2 0 00 20108337 PR IC 33 AK33F006 0 00 30000071 CAP MKT 10NF 63V J C606 0 0200 USD C122 30000074 CAP MKT 100NF 63V J C502 0 0400 U...

Page 33: ...3 CAP CER 180PF 50V J CH C103 C104 0 0200 USD 30000234 CAP CER 270PF 50V J SL C905 0 0129 USD 30000266 CAP CER 560PF 50V J SL C111 0 0200 USD 30000283 CAP CER 1NF 50V K B C865 C265 0 0120 USD 30000287...

Page 34: ...L 1UF 250V M C173 0 0198 USD 30000371 CAP EL 22UF 50V M C501 C503 C514 C515 C517 0 0200 USD C728 C732 C347 C776 C780 C778 C781 30000375 CAP EL 220UF 16V M C001 0 0300 USD C149 C150 C147 30000383 CAP E...

Page 35: ...2 2NF 4KV M C119 0 0500 USD 30000444 CAP CER 470PF 1KV KB C636 C637 0 0083 USD 30000452 RES CF 1 4W 10R J R110 0 0120 USD R405 R411 30000459 RES CF 1 4W 100R J R711 0 0120 USD R902 R904 R903 R309 R331...

Page 36: ...4W 22K J R107 R109 0 0115 USD 30000599 RES CF 1 4W 220K J R921 0 0120 USD 30000628 RES CF 1 4W 2 7K J R605 0 0114 USD 30000633 RES CF 1 4W 27K J R278 0 0120 USD 30000650 RES CF 1 4W 33R J R111 R112 0...

Page 37: ...23 0 0095 USD 30001138 RES MO 1W 2 7K J R601 R603 0 0100 USD 30001159 RES MO 1W 0 33R J R116 0 0200 USD 30001162 RES MO 1W 390R J R625 0 0114 USD 30001170 RES MO 1W 4 7K J R916 0 0115 USD 30001174 RES...

Page 38: ...6 2V 1 2W D909 0 0200 USD 30001368 DIODE ZENER 3V D136 0 0220 USD 30001372 DIODE ZENER 9 1V ZPD D123 0 0129 USD 30001377 DIODE ZENER 33V UZT 33B D615 0 1700 USD 30001384 TR MCR22 6 Q107 0 2300 USD 30...

Page 39: ...ALE 5P 2005 PL502 0 0500 USD 30001785 CONN MALE 7P 2007 PL509 0 0700 USD 30001792 CONN MALE 2P MOLEX PL602 PL101 0 0500 USD 30001795 CONN MALE 3P DEG PL100 0 0600 USD 30001829 CONN MALE 2P TOP WHITE P...

Page 40: ...00 L101 30001987 FIXED COIL 4 7UH Q70 K A L507 0 0200 USD 30001992 FIXED COIL 10UH Q65 K A L500 L501 L502 L503 L504 0 0300 USD L210 L105 L209 30001996 FIXED COIL 22UH Q40 K L700 L701 L708 L702 L704 0...

Page 41: ...D 30006758 RES MO 1W 0 82R J R144 0 0100 USD 30006940 CAP CER 2 7NF 1KV K B C117 0 0210 USD 30007202 RES MF 1 4W 56K F R658 0 0100 USD 30007308 CAP CER 220PF 1KV K PULSE C115 C123 C124 C126 C155 0 033...

Page 42: ...USD C255 30010921 DOUBLE DECK SCART SOCKET PL207 0 3993 USD 30010964 FERRITE BEAT 805 BLM21A601RPT L103 0 0279 USD L713 L714 30011443 XTAL REZ 429KHZ 0 9MM X100 0 0273 USD 30011968 IC MC44608 IC106 0...

Page 43: ...1 1 4202 USD 30016421 CONN ASSY 2 60 VRT PL601 0 0434 USD 30016483 CONN ASSY 2 60 HRZ PL602 0 0776 USD 30016755 TR STP8NC70ZFP PLASTIC Q102 0 8196 USD 30017085 LINEARITY COIL 20UH L602 0 3688 USD 3001...

Page 44: ...0 2896 USD 40000020 TR HOLDER TR 06A 0 0600 USD 40000026 EJECTOR CLIP CLAP 0 2900 USD 40000127 SWITCH INSULATION DOOR LK101 0 0400 USD 40001898 MACARON 12cm Is ile daralan 0 0100 USD 40005299 BATTERY...

Page 45: ...01939 LOGO TEAC BIG GRAY W P 0 3200 USD 50006060 CARTON BOX 7289 99 16 9 CR W TV EMPTY 0 00 50011720 LABEL HIGH END 0 1621 USD 50018915 LBL SCREEN TEAC CTW2850S 0 00 50025239 WARRANTY CARD TEAC ENG 3...

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