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Model no.: .CT-21CBP5CP.doc
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32

1.3 Sound power amplifier TDA7057AQ

2×8W Stereo BTL Audio Output Amplifier with DC Volume Control

3) Block Diagram

Fig.12

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Содержание CT-21CBP5CP

Страница 1: ...C C Co o ol l lo o or r r T T TV V V S S Se e er r rv v vi i ic c ce e e M M Ma a an n nu u ua a al l l...

Страница 2: ...Model no CT 21CBP5CP doc version 1 0 2 Model CT 21CBP5CP C C Ch h ha a as s ss s si i is s s E E EX X X 1 1 1A A A...

Страница 3: ...USTMENTS 9 SET UP ADJUSTMENTS 9 CIRCUIT ADJUSTMENTS 12 STRUCTURE AND CHASSIS FUNCTION DESCRIPTION 19 STRUCTION BLOCK DIAGRAM 19 BLOCK DIAGRAM FOR SUPPLY VOLTAGE SYSTEM 20 CHASSIS DESCRIPTION 21 SERVIC...

Страница 4: ...using an accurate EHT voltmeter 2 The only source of X RAY radiation in this TV is the CRT The TV minimizes X RAY radiation which ensures safety during normal operation To prevent X ray radiation the...

Страница 5: ...und when the TV is in operation Install a suitable isolating transformer of beyond rated overall power when servicing or connecting any test equipment for the sake of safety 4 When replacing ICs use s...

Страница 6: ...ad the parts list in this manual carefully Substitute replacement components which do not have the same safety characteristics as specified in the parts list may create X ray radiation 2 Do not slap o...

Страница 7: ...Model no CT 21CBP5CP doc version 1 0 7 SAFETY SYMBOL DESCRIPTION...

Страница 8: ...Allow enough space at least 10cm between the TV and wall or enclosures for proper ventilation 4 Slots and openings in the cabinet should never be blocked by clothes or other objects 5 Please power of...

Страница 9: ...ch of the TV set 1 3 Operate the TV for at least 15 minutes 1 4 Degauss the TV set using a specific degaussing coil 1 5 Set the brightness and contrast to maximum 1 6 Counter clockwise rotate the R B...

Страница 10: ...sharp picture 2 1 3 Adjust two tabs of the 4 pole magnet to change the angle between them and red and blue vertical lines are superimposed each other on the center of the screen 2 1 4 Turn both tabs a...

Страница 11: ...cumference 2 2 5 Fix the deflection yoke position and put the third wedge in either upper space Fasten the deflection yoke assembly on the picture tube 2 2 6 Detach the temporarily mounted wedge and p...

Страница 12: ...voltage is within the range of the rated value 2 2 Connect a digital voltmeter to the B voltage output terminal of the TV set Power on the TV and set the brightness and sub brightness to minimum 2 3...

Страница 13: ...ttings 6 1 1 Set the volume to 0 Then press and hold the MUTE button on the remote control and press the MENU button on the TV to enter the SERVICE mode In this case the S mode cannot be stored in the...

Страница 14: ...Model no CT 21CBP5CP doc version 1 0 14...

Страница 15: ...t may differ dependent on different models 3 The data sheet may differ dependent on different CRTs for the same model 6 3 Option set With remote control system software TDA935X all options can be set...

Страница 16: ...Model no CT 21CBP5CP doc version 1 0 16...

Страница 17: ...Model no CT 21CBP5CP doc version 1 0 17 Note Do not change the data marked with _ in Data column...

Страница 18: ...Model no CT 21CBP5CP doc version 1 0 18...

Страница 19: ...Model no CT 21CBP5CP doc version 1 0 19 STRUCTURE and CHASSIS FUNCTION DESCRIPTION 1 STRUCTURE BLOCK DIAGRAM...

Страница 20: ...Model no CT 21CBP5CP doc version 1 0 20 2 BLOCK DIAGRAM FOR SUPPLY VOLT AGE SYSTEM...

Страница 21: ...2 C bus controlled IC With combination of microcontroller and small signal processor the TDA935X 6X 8X series feature high integration high performance to price ratio and high reliability and advanced...

Страница 22: ...DIP envelope with 64 pins The features are given in the following feature list The differences between the various ICs are given in the table on page 4 2 Features TV signal processor Multi standard v...

Страница 23: ...ntroller TDA935X 6X 8X PS N2 series Controller 80C51 ontroller core standard instruction set and timing 1 s machine cycle 16 128Kx8 bit late programmed ROM 3 12Kx8 bit DATA RAM shared between Display...

Страница 24: ...lining underlining and italics Soft colours using CLUT with 4098 colour palette Globally selectable scan lines per row 9 10 13 16 and chartercter matrix 12x10 12x13 12x16 VxH Fringing Shadow selectabl...

Страница 25: ...Model no CT 21CBP5CP doc version 1 0 25 3 Block Diagram...

Страница 26: ...Model no CT 21CBP5CP doc version 1 0 26...

Страница 27: ...3 18 ground 3 for TV processor DECBG 19 bandgap decoupling AVL EWD 1 20 Automatic Volume Levelling East West drive output VDRB 21 vertical drive B output VDRA 22 vertical drive A output IFIN1 23 IF in...

Страница 28: ...32 35 and 44 is dependent on the IC version mono intercarrier FM demodulator QSS IF amplifier and East West output or not and on some software control bits The valid combinations are given in table 2...

Страница 29: ...Model no CT 21CBP5CP doc version 1 0 29 Fig 8 Pin Configuration SDIP 64...

Страница 30: ...Model no CT 21CBP5CP doc version 1 0 30 1 2 Electronic switch circuit HEF4053 Triple 2 channel Analog Multiplexer Demultiplexer...

Страница 31: ...nt flows into terminals Y the voltage drop across the bidirecctional switch must not exceed 0 4 V If the switch current flows into terminal Z no VDD current will flow out of terminals Y in this case t...

Страница 32: ...Model no CT 21CBP5CP doc version 1 0 32 1 3 Sound power amplifier TDA7057AQ 2 8W Stereo BTL Audio Output Amplifier with DC Volume Control 3 Block Diagram Fig 12...

Страница 33: ...A guard signal in zoom mode 2 General Description The TDA8356 is a power circuit for use in 90 and 110 colour deflection systems for field frequencies of 50 to 120 Hz The circuit provides a DC driven...

Страница 34: ...peaker control In 1 0dbsteps for balance facility independent mute function All function are programmable via Serial Bus 2 Descripion The TDA7449 is a volume tone bass and treble Balance left right pr...

Страница 35: ...Model no CT 21CBP5CP doc version 1 0 35 4 Pin Connection Fig 16 5 Electrical Characteristics...

Страница 36: ...Tamb 25 C VS 9V RL 10K RG 600 all controls flat G 0dB unless otherwise specified NOTE1 1 The device is functionally good at Vs 5V a step down on Vs to 4V does t reset the device 2 BASS and TREBLE res...

Страница 37: ...wer CMOS Vcc 2 7 to 5 5V operation Two wire serial interface bus I 2 C Bus compatible Filtered inputs for noise suppression with Schmitt trigger Clock frequency up to 400 kHz High programming flexibil...

Страница 38: ...wer supply units Cycle by cycle current limiting under voltage lockout with hysteresis over voltage protection and thermal shutdown protects the power supply during the normal overload and fault condi...

Страница 39: ...ion for STR F6654 Pin No Symbol Function Description 1 OCP FB Over current protection detection signal voltage limiting signal input 2 S MOSFET source 3 D MOSFET drain 4 VIN Supply voltage input for c...

Страница 40: ...Model no CT 21CBP5CP doc version 1 0 40 WAVEFORMS OF KEY POINTS...

Страница 41: ...Model no CT 21CBP5CP doc version 1 0 41 Notes The waveforms are only for reference The waveforms may differ dependent on different models...

Страница 42: ...23 6 10 Guard output 16 0 2 4 2 4 11 Pincushion output 2 4 55 1 23 6 12 Pincushion input negative 0 13 Pincushion input positive 0 8 9 0 8 8 Table 4 Function and Service Data of TDA8356 N401 s Pins D...

Страница 43: ...16 Supply voltage 7 8 0 0 Table 6 Function and Service Data of TDA7449 N650 s Pins Digital Multimeter Victor DT890D Pin No Symbol Reference Voltage V Positive Resistance K Nerative Resistance K 1 CREF...

Страница 44: ...5 8 P3 3 ADC2 PWM3 0 7 10 7 9 3 9 VSSC P 0 0 0 10 P0 5 0 01 13 3 13 3 11 P0 6 4 2 11 6 11 0 12 VSSA 0 0 0 13 SECPLL 2 3 27 6 21 7 14 VP2 8 0 1 8 1 8 15 DECDIG 5 0 23 1 16 1 16 PH2LF 3 2 27 5 21 0 17...

Страница 45: ...AUDOUT AMOUT 1 3 3 27 5 21 5 45 INSSW2 1 6 1 0 1 0 46 R2 VIN 2 6 28 0 21 7 47 G2 YIN 2 6 28 0 21 7 48 B2 UIN 2 6 28 0 21 7 49 BCLIN 2 5 27 6 20 8 50 BLKIN 6 0 27 9 21 3 51 RO 2 6 1 1 1 1 52 GO 2 5 1...

Страница 46: ...Model no CT 21CBP5CP doc version 1 0 46 APPENDIX...

Страница 47: ...Model no CT 21CBP5CP doc version 1 0 47...

Страница 48: ...Model no CT 21CBP5CP doc version 1 0 48...

Страница 49: ...Model no CT 21CBP5CP doc version 1 0 49...

Страница 50: ...RES RC 05K273JT 2 R233 R235 51905104JW5 CHIP RES RC 05K104JT 5 R232 R519 R520 R595 RS100 50810012400 CHIP CAP 0805CG330J500NT 2 C200 C200A 50810012410 CHIP CAP 0805CG470J500NT 2 C582 C585 50810012430...

Страница 51: ...CAP 2222 366 76104 1 C167 52369104J10 MYLAR CAP ECQV1104JMW 52367224J10 MYLAR CAP CL21X 50V 0 22 FJ 5 C154 C155 C214 C216 C333 5236C104J10 MYLAR CAP CL21X 250V 0 1 FJ 1 C481 5246Q104KB0 POLYPROPYLENE...

Страница 52: ...2920 CHIP RES RC 05K472JT 1 R210 51113103JU0 CARBON RES RT13 0 166W 10K J 2 R601 RS602 51113104JU0 CARBON RES RT13 0 166W 100K J 2 R603 RS604 50620071310 CARBON RES RT14 0 25W 4 7K J 2 R649 R650 52532...

Страница 53: ...2 108 1 GZ01 53610210800 GZS CRT SOCKET GZS10 2 AC2 51224111493 FUSE RF10 2W 1 5 J 1 R931 515271P5J90 FUSE RF11 2W 1 5 J 55623101J30 INDUCTOR LGA0307 10 HJ 2 LK01 LK02 8782003010G FUCNTION KEY PCB JUC...

Страница 54: ......

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