Beko K1 CHASSIS, Service Manual

Page 1: ...Service Manual K1 CHASSIS ...

Page 2: ...cifications 3 o Remote Control 4 o Preparations 5 o Operating Your TV 6 o Block Diagram 10 o IC Datasheets Specs 11 o Pin Voltages of IC s 18 o Oscillosgraphs Of Some IC Pins 20 o Electrical Adjustments 24 o Channel Frequency Tables 29 o Spare Part List 31 ...

Page 3: ...f the plug 2 Turn the receiver s power switch on 3 Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the receiver such as screw heads aerials connectors control shafts etc When the exposed metallic part a return path to the chassis the reading should be between 4Mohm and the 20Mohm When the exposed metal does not have a return path...

Page 4: ...D CH21 69 Audio outputs 7W RMS at 10 THD 20 21 High Voltage 25 0 5 KV 20 21 Focus voltage 25 6 38 of EHT Grid 2 voltage 0 1400 V Heater voltage 6 2 0 2 Vrms Video Audio Terminals AV1 IN Video 1 Vpp 75 Ohm Audio 0 5 Vrms 10 Kohm RGB AV1OUT Video 1 Vpp 75 Ohm Audio 0 5 Vrms 1 Kohm AV2 IN RCA optional Video 1 Vpp 75 Ohm Audio 0 5 Vrms 10 Kohm Operating temperature 0 45 Degrees Safety IEC 65 BS P2N X ...

Page 5: ... see the function on screen and to control them efficiently Infrared Remote Control Virtual Dolby Surround optional Dynamic Bass optional Multi language menu system On Timer Off Timer Stereo headphone socket optional Scart Socket Video cassette recorder satellite receiver video disc player DVD TV games or a home computer can be connected to this AV socket with an appropriate connecting cable Secon...

Page 6: ...pplied into the compartment on the rear of the remote control ensure you follow the polarity diagram inside the compartment 4 4 PIN CONNECTIONS FOR SCART SOCKET 1 Audio output Right 11 RGB input Green 2 Audio input Right 12 3 Audio output Left Mono 13 Red ground 4 Audio ground 14 Ground 5 Blue ground 15 RGB input Red 6 Audio input Left Mono 16 Blanking Signal 7 RGB input Blue 17 Video output groun...

Page 7: ...s the AVbutton again to return toTV C TUNING THE TELEVISION There are two ways of tuning your television Manual where you control the tuning process or Autoprogram where the television does it all automatically The TV sets equipped with ATS Automatic Tuning System sorts the channels regarding the broadcasting system of your country optionally Please Note If the TV is set to a channel with no signa...

Page 8: ... the Program up button to select again SEARCH and continue the tuning procedure until you have tuned in all the programmes you want or the television can receive Tuning with channel numbers Enter the SETUP menu by pressing the blue button Press the OK button to enter the CHANNEL row Use the OK button to select S for cable channels and C for terrestrial broadcast Use Volume up button to select the ...

Page 9: ...ORE and press the OK button D FEATURES 1 TV GUIDE Optional You can see the TV Guide information on the screen by pressing DOUB button while a provider channel or a supported channel by provider is selected The information of the current and next programmes which is sent by provider is displayed on the screen Note TV Guide information may not have for all programmes It depends on the broadcasting a...

Page 10: ...In this case if you open the provider channel Mini Guide occurs on the screen 2 PAT Picture and Text OPTIONAL In the double window function you can also display the teletext screen in the second window 3 PIP Picture Position Change Press the POS button repeatedly until desired position is achieved The PIP picture moves clockwise ...

Page 11: ...10 6 BLOCK DIAGRAM OF E1 CHASSIS ...

Page 12: ...ported by a powerful OSD generator with integrated Teletext CC acquisition including on chip page memory Features The VCT 49xyI family offers a rich feature set overing the whole range of state of the art 50 60 Hz TV applications PSSDIP88 1 2 package PMQFP144 2 package Submicron CMOS technology Low power standby mode Single 20 25 MHz reference crystal 8 bit 8051 instruction set compatible CPU Up t...

Page 13: ...nputs 4H adaptive comb filter PAL NTSC multi standard color decoder PAL NTSC SECAM Nonlinear horizontal scaling panorama vision Luma and chroma transient improvement LTI CTI Non linear color space enhancement NCE Dynamic black level expander BLE Scan velocity modulation output Soft start stop of H drive Vertical angle and bow correction Average and peak beam current limiter Nonlinear and dynamic E...

Page 14: ...5 VREFIF OBL Reference Voltage IF ADCs 16 IFIN IN VREFıf Differential IF Input 17 IFIN IN VREFıf Differential IF Input 18 RESETQ IN OUT OBL Reset Input Output 19 VSUP5 0FE SUPPLY OBL Supply Voltage Analog IF Front end 5 0 V 20 VSUP5 0IF SUPPLY OBL Supply Voltage IF ADC 5 0 V 21 VSUP3 3DIG SUPPLY OBL Supply Voltage Digital Core 3 3 V 22 GND SUPPLY OBL Ground Platform 23 GND SUPPLY OBL Ground Platfo...

Page 15: ...d Video DACs 64 VSUP3 3DAC SUPPLY OBL Supply Voltage Video DACs 3 3 V 65 VSUP3 3IO SUPPLY OBL Supply Voltage I O Ports 3 3 V main and Standby supply 66 GND SUPPLY OBL Ground Platform 67 GND SUPPLY OBL Ground Platform 68 VSUP3 3BE SUPPLY OBL Supply Voltage Analog Video Back end 3 3 V 69 XREF OBL Reference Current for RGB DACs 70 VRD OBL Reference Voltage for RGB DACs 71 BOUT OUT VSUP5 0BE Analog Bl...

Page 16: ...d EMC performance due to differential inputs SYMBOL PARAMETERS CONDITIONS MIN TYP MAX UNIT Vp Supply voltage 7 5 12 18 V VFB flyback supply voltage 2 x VP 45 66 V Iq P av average quiescent supply current during scan 10 15 mA Iq FB av Iq FB av during scan 10 mA Ptot total power dissipation 8 W Vi p p input voltage peak to peak value 1000 1500 mV Io p p output current peak to peak value 2 0 A Io pea...

Page 17: ... must be left open 7 4 AN5277 Dual Channel SEPP Power Amplifier The AN5277 is a monolithic integrated circuit designed for 10 0 W 26 V 8 W output audio power amplifier It is a dual channel SEPP IC suitable for stereo operation in TV application Features Few external components No Boucherot cells output C R No Bootstrap Capacitors No Negative Feedback Capacitors Built in muting circuit Built in sta...

Page 18: ... a minimum of 20 kHz in standby mode This function is performed by a digital circuit to avoid any jitter also with periodically pulsed loads To provide extremely low power consumption at light loads this device can be switched into Standby Burst Mode This is also possible without standby control signal for adapter application Additionally the start up current is very low To avoid switching stresse...

Page 19: ...C 5 0 V 4 92 1 64 VSUP3 3DAC Supply Voltage Video DACs 3 3 V 3 29 1 21 VSUP3 3DIG Supply Voltage Digital Core 3 3 V 3 14 1 65 VSUP3 3IO Supply Voltage I O Ports 3 3 V main and Standby supply 3 31 3 31 22 GND Ground Platform 0 0 66 GND Ground Platform 0 0 23 GND Ground Platform 0 0 67 GND Ground Platform 0 0 24 VSUP1 8DIG Supply Voltage Digital Core 1 8 V main and stand by supply 1 85 1 97 68 VSUP3...

Page 20: ...ifier Pin No Pin Name Short Description V DC ST BY Pin No Pin Name Short Description V DC ST BY 1 N C NOT CONNECTED 0 0 5 OFC OVERVOLTAGE FAULT COMPARATOR 0 0 2 PCS PRIMARY CURRENT SIMULATION 1 3 9 06 6 GND GROUND 0 0 3 RZI REGULATION AND ZERO CROSSING INPUT 1 35 0 04 7 OUT OUTPUT 1 79 0 4 SRC SOFT START AND REGULATION CPACITOR 2 76 0 34 8 Vcc SUPPLY VOLTAGE 11 4 10 1 IC 501 TDA 8357 VERTICAL DEFL...

Page 21: ...ur Bar sound 1 kHZ 9 1 VCTI IC 101 Pin 02 Supply Voltage Analog Audio 15625 kHz Pin 06 Analog Audio 1 Output Left 15625 kHz Pin 07 Analog Audio Output Right 15625 kHz Pin 08 Analog Audio 3 Input Left 15625 kHz Pin 09 Analog Audio 3 Input Right 15625kHz Pin 38 Analog Video 2 Input 15625kHz ...

Page 22: ... Video 1 Output 15625 kHz Pin 41 Analog Video 2 Output 15625 kHz Pin 60 Horizontal Drive Ouput 15625 kHz Pin 61 Horizontal Fylback Input 15625 kHz Pin 71 Analog Blue Ouput 15625 kHz Pin 72 Analog Green Ouput 15625 kHz ...

Page 23: ...Ouput 15625 kHz Pin 80 Sense ADC Input 15625 kHz Pin 84 Differential Vert Sawtooth Out VERT 15625 kHz Pin 85 Differential Vert Sawtooth Out VERT 15625 kHz 9 2 TDA 2822 IC 301 Pin 1 Input A 15625 kHz Pin 2 Input B 15625 kHz ...

Page 24: ...23 Pin 3 Supply Voltage 15625 kHz Pin 4 Output B 15625 kHz Pin 6 Flyback Supply Voltage 15625 kHz Pin 7 Output A 15625 kHz Pin 8 Guard Output 15625 kHz Pin 9 Feedback Input 15625 kHz ...

Page 25: ...ss 9301 Press 0 button to exit the Service Mode To exit from the service menu TV TX button should be typed on the Remote Control While the service menu is on screen version and the date of the software are written on right bottom of the screen For Example SK12256 01 T01 20 29 29 24 12 04 2 1 AGC Adjustment Switch to Service Menu Find the AGC METHOD under OPTIONS sub menu with P P Set its value to ...

Page 26: ...om corners with LOWER CORNER 1 and LOWER CORNER 2 Adjust the horizontal OSD centering with HORIZONTAL OSD POSITION and vertical OSD centering with VERTICAL OSD POSITION For NTSC adjustments connect an NTSC signal from AV1 follow the adjustments explained above under the sub menus 60Hz GEOM 60Hz GEOM HOR II 60Hz GEOM EHT Exit from the Service Menu 2 5 Options Menu Enter the Service Menu with the Se...

Page 27: ...MER AVAILABLE N A DEMO 0 Otoprogram in first start closed 1 open 2 6 Sound Options Menu BG EUROPE BG Europe NEW ZELLAND BG New Zelland AUSTRALIA BG Australia N A BG not avaliable DK AVAILABLE N A I AVAILABLE N A L L AVAILABLE N A FM RADIO TV GUIDE NONE Radio EPG not available FM RADIO Only radio avaliable TV GUIDE Only TV Guide avaliable NICAM AVAILABLE N A DOLBY VITUAL AVAILABLE N A BASS OPTION D...

Page 28: ...P 380 500 500 S CORRECTION 41 30 0 PWL TIME CONSTANT 1 1 1 VERTICAL ANGLE 0 0 0 PWL 60 70 70 VERTICAL BOW 0 0 0 SVM GAIN 0 0 0 START LINE MEASUR 11 12 12 SVM CORING 0 0 0 VER BLANKING STOP 20 18 18 SVM LIMITTER 0 0 0 VER BLANKING START 310 333 333 SVM DELAY 0 0 0 HORIZONTAL WIDTH 0 0 0 SVM DIFF WINDOW 0 0 0 HORIZONTAL SHIFT 61 61 48 PIP POSITION TRAPEZE CORR I 0 0 0 HORIZONTAL CUSHION CORR I 0 0 0...

Page 29: ...00 400 400 S CORRECTION 41 100 140 PWL TIME CONSTANT 1 1 1 VERTICAL ANGLE 0 0 0 PWL 90 70 90 VERTICAL BOW 0 0 0 SVM GAIN 0 0 0 START LINE MEASUR 11 16 11 SVM CORING 0 0 0 VER BLANKING STOP 18 21 18 SVM LIMITTER 0 0 0 VER BLANKING START 333 333 333 SVM DELAY 0 0 0 HORIZONTAL WIDTH 0 0 57 SVM DIFF WINDOW 0 0 0 HORIZONTAL SHIFT 42 50 42 PIP POSITION TRAPEZE CORR I 0 0 0 HORIZONTAL CUSHION CORR I 0 0 ...

Page 30: ...29 11 CHANNEL FREQUENCY TABLE ...

Page 31: ...30 ...

Page 32: ...R TAPE 293478R C316 C317 CC CHIP 470NF K 16V 0805 X7R 294476R C318 C321 CC CHIP 1NF K 50V 0603 X7R 292114R C322 EC 100UF 25V 11 6 R 5 252113R C323 C324 CC CHIP 1 5NF K 50V 0603 X7R TAPE 292153R C325 CC CHIP 68NF K 50V 0603 X7R 293685R C326 EC 1500UF 35V 20 13 R 5 253155R C327 C328 EC 1000UF 16V 20 10 R 5 253115R C329 C330 C PEM 100NF J 100V R 5 274107R C331 C CE 100NF 50V K R 5 224112R C401 EC 4 7...

Page 33: ...0 AS D01 LED IR SIR563SB3F 23 940 303991R D102 DIODE 1N5819 SHOTH 303246R D201 DIODE 4148 MELF SOD 80C 303195R D202 DIODE 1N4148 52MM 302289R D203 JUMPER WIRE D 6 500700 KD D401 D405 DIODE 4148 MELF SOD 80C 303195R D406 LED L 513LR1D KIRM L 25 4 PARALIGHT 303295R D501 DIODE 1N4148 52MM 302289R D504 D505 DIODE 4148 MELF SOD 80C 303195R D506 JUMPER WIRE D 6 500700 KD D508 D511 DIODE BA157 300311R D6...

Page 34: ... 0603 172751R R305 R306 RC CHIP 10K J 1 16W 0603 173108R R307 RC CHIP 6 8K J 1 16W 0603 172686R R308 RC CHIP 1K J 1 10W 0805 172101R R311 CFR 1K J 1 4W 6 52MM 102101R R312 R313 RC CHIP 3 3K J 1 16W 0603 172336R R317 R318 RC CHIP 56K J 1 16W 0603 173563R R319 R320 RC CHIP 4 7K J 1 16W 0603 TAPE 172479R R323 R324 CFR 4 7R J 1 4W 6 26MM 109473R R325 RC CHIP 18K J 1 10W 0805 173182 R401 RC CHIP 470R J...

Page 35: ... 1 16W 0603 TAPE 171392R R663 RC CHIP 365R 1 1 16W 0603 TAPE 171363R R664 RC CHIP 390R 1 1 16W 0603 TAPE 171392R R665 RC CHIP 470R 1 1 16W 0603 TAPE 171479R R666 RC CHIP 120R J 1 10W 0805 171122 R666 RC CHIP 120R 1 1 16W 0805 171128R R667 RC CHIP 820R 1 1 16W 0603 TAPE 171825R R702 R705 RC CHIP 1K J 1 16W 0603 172104R R706 R708 CFR 1K J 1 2W 6 52MM 102105R R709 R711 RC CHIP 220R J 1 16W 0603 TAPE ...

Page 36: ...75 POW 12 6 RED 31797 X703 CRT SOCKET NARROW INCHANG 31532 See the CPT Difference List too X920 CABLE HARNESS 3 3P L 400 HP MOD 7KY537 AS X921 KONN CINCH YELLOW HOR 14 1 031165R X922 KONN CINCH RED HOR 14 1 031164R X923 KONN CINCH WHITE HOR 14 1 031163R X940 CABLE HARNESS 3P L 360 HP MOD 7XY517 AS ZD501 DIODE Z BZX55C 15V 303826R ZD502 DIODE Z BZX55C33 52MM 302318R ZD503 DIODE Z BZX55C8V2 26MM 302...

Page 37: ...ALL2 26 AUDIO SEL 27 AUDIO SEL 28 SC1 F IN 29 SC1 B IN 30 SC1 G IN 31 SC1 R IN 32 SC1 CVBS IN 33 SC2 CHR 34 SC2 Y 35 GND 45 VSUP3 3FE 46 MUTE 47 ST BY 48 IR 49 LED 50 STATUS 1 51 STATUS 2 52 STATUS 3 53 KB 54 P20 DFVBL 55 P21 PWMV 56 SCL 57 SDA 58 VPROT 59 HOUT 60 HFLB 61 SAFETY 62 GNDDAC 63 VSUP3 3DAC 64 VSUP3 3IO 65 GND 66 GND 67 VSUP3 3BE 68 XREF 69 VRD 70 BOUT 71 GOUT 72 ROUT 73 SVMOUT 74 BIN ...

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