Akai 21CTS92FS Скачать руководство пользователя страница 19 | Manualshive

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Содержание 21CTS92FS

Страница 1: ...SERVICE MANUAL Model 21CTS92FS www akai ru COLOUR TV SET ...

Страница 2: ...17 1 Technology Specification and Feature I2 C Bus Control Auto Search Off On Timer Teletext Rated Voltage AC 140V 250V 50Hz 60Hz Power Consumption 65 W Sound output 2 W 2 Screen size Picture tube 54 cm System RF PAL B G SECAM D K AV PAL NTSC 3 58 4 43 Channel coverage VHF Low channel VL 48 25 to 147 25 MHz VHF high channel VH 154 25 to 463 25 MHz UHF channel U 471 25 to 863 25 MHz IF 38 9MHz Exte...

Страница 3: ... chips instruction 1 T c T TDA93X1 he UOC Ultimate One Chip TDA93X1 is adopted in this chassis This IC is the first available component that contains the complete ontrol and small signal functionality needed for a TV application in one device he UOC TDA93X1 pins function description total 64 pins Pin1 Standby control 1 is on 0 is off Pin2 SCL Pin3 SDA Pin4 Tuning PWM output Pin5 Auto AV control SW...

Страница 4: ...resistor to ground The optimal reference current is 100mA which is determined by this resistor The 100mA reference current should not be changed ecause the geometry processor is optimised for this current Furthermore the output current of ertical drive and EW are proportional to this current Pin26 Vertical sawtooth This pin requires a capacitor to ground of 100nF Pin27 AGC output This output is us...

Страница 5: ...signal output to the CRT board Pin54 3 3V Pin55 GND Pin56 3 3V Pin57 Pin58 Pin59 12MHz crystal Pin60 Reset NC in this chassis Pin61 3 3V Pin62 This pin is connected to the HEF4052 Functions expanding Pin63 This pin is connected to the HEF4052 Functions expanding Pin64 IR signal input 2 Memory AT24C08 is an E2 PROM of 8k pins describe as follows Pin1 Pin2 Pin3 Pin4 Pin7 GND Pin8 5V supply Pin5 SDA ...

Страница 6: ...he TDA9859 is the audio effect processor the AN7522N is the driver The TDA9859 includes bass treble balance surround effect shortcut options Through Synchronous separating circuit the video signal is divided into orizontal Synchronizing signal and Vertical Synchronizing signal The horizontal Sync pulse coming from the pin 33 is ransferred to the horizontal drive transistor and will be used to driv...

Страница 7: ... generator has a separate supply voltage of V on pin 6 On pin 4 a vertical guard signal is available For HF loop stability a damping resistor R407 is connected across the deflection coil 6 6 T Power supply he IC of KA5Q0765RT is adapted in this chassis it is the product of Fairchild It supplies four DC voltages one is the B 110V another is Hcc 26V the third is 13V the sound drive voltage the fourt...

Страница 8: ...7 ...

Страница 9: ...Fig 2 HEF4052BP illustration Fig 3 TDA8177 illustration 8 Thermal Protection AMP Pump up 1 INVERTING INPUT 5 VER OUTPUT 2 Vcc 6 OUTPUT STAGE VCC 3 PUMP UP OUT 7 NON INV PUT 4 GND ...

Страница 10: ...Fig 4 AN17821A illustration 9 ...

Страница 11: ...Fig 5 KA5Q0765RT illustration 10 ...

Страница 12: ...11 Fig 6 TDA9859 illustration ...

Страница 13: ...12 ...

Страница 14: ...st VSHIFT value the center horizontal line correspond to CRT vertical center 3 Adjust Vamp value to get 90 of vertical picture contents would be displayed on CRT 4 Adjust HSHIFT value to get the picture horizontal center correspond to CRT horizontal center 5 Receive standard Crosshatch pattern signal for NTSC system and again adjust 7 3 MENU7 AGC TOP adjustment Receive 60dBu 1mv VH color bar signa...

Страница 15: ...ow selection of narrow band sound PLL FFI ON OFF OFF Fast filter if PLL OSO ON OFF ON Switch off in vertical overscan FCO ON OFF OFF Compulsory colorful switch of weak signal WOOFER ON OFF OFF Have the heavy bass function choice switch of hour of TDA9860 DUAL OUT 0 1 1 Have the TDA9874 a track companion sound of hour to output Volume mode 0 1 1 One choice of the companion sound curve VOL PIN OPEN ...

Страница 16: ...TXT DEF 0 3 0 The diagram text district constitution switch know well to see Note1 TXT BRI 0 32 8 A constitution of hour of the diagram text appearance TXT LIST 0 1 0 The diagram text fast index function constitution switch Know well to see the annotation 2 Note2 M4 SUBCON 0 63 36 Sub contrast SUBCOL 0 63 63 Sub colour SUBSHP 0 63 25 Pay the clear degree regulate SUBTINT 0 63 32 Pay the tone regul...

Страница 17: ...nd curve 1 the recommendation be worth 20 SP16 0 63 52 2 spots of the companion sound curve 16 the recommendation be worth 35 SP32 0 63 56 2 spots of the companion sound curve 32 the recommendation be worth 45 SP48 0 63 58 2 spots of the companion sound curve 48 the recommendation be worth 60 START TIME 0 15 6 Switch on time constitution M8 VSLOPE 50HZ 34 60HZ 34 hight line position regulate VSHIF...

Страница 18: ...nian Slovenian Czech Slovak Rumanian The EAST2 diagram text includes the following language Polish German Swedish Fin Dan Hungarian Lettish Russian Slovenian Czech Slovak Estonian Note 2 Make use of 4 color keys of the remote control browse 4 pages of the enactment quickly namely index function The TV AV sets the saving key for the index While using this function the TXT LIST establishes for ON in...

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