Beko E1 CHASSIS Service Manual
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Beko E1 CHASSIS Service Manual

Beko E1 CHASSIS Service Manual

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E1 CHASSIS

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Summary of Contents for Beko E1 CHASSIS

  • Page 1 Service Manual E1 CHASSIS...

  • Page 2: Table Of Contents

    CONTENTS PAGE o Safety Instructions o Technical Specifications o Remote Control o Preperations o Operating Your TV o Block Diagram o IC Specs o Pin Voltages of IC’s o OSCILLOSGRAPHS OF SOME IC PINS o Electrical Adjustments o Channel Frequency Tables o Spare Part List...

  • Page 3: Safety Instructions

    SAFETY INSTRUCTIONS GENERAL GUIDELINES the receiver, such as screw heads, aerials, 1. It is advised to insert an isolation transformer connectors, control shafts etc. When the in the AC supply before servicing a hot exposed metallic part a return path to the chassis.

  • Page 4: Technical Specifications

    AND MULTIMETER (SELECT VDC) AND THEN SHORT CIRCUIT DIRECTLY TO DISCHARGE COMPLETELY TECHNICAL SPECIFICATIONS Power source: 220-240V AC, 50-60Hz Power consumption (nom.) : 40 W 14” 50 W 20”, 21” Standby power consumption : Aerial impedance : 75Ohm, coaxial type Receiving system PAL BG PAL SECAM BG...

  • Page 5: Remote Control

    REMOTE CONTROL 1. MUTE button 2. Ten key program button 3. Two digit program button (-/--) 4. MENU button 5. Program up button 6. Volume decrease button 7. Return to selected programme button (SWAP) 8. Information button (i) 9. STAND-BY button 10.
  • Page 6 PREPARATIONS MAIN SUPPLY CONNECTIONS Connect the TV mains plug into your domestic mains socket outlet (230 V 50Hz AC). Press the Program up, Program down button or Numeric Buttons on the remote handset to switch the TV on. AERIAL CONNECTION Using a 75Ω...

  • Page 7: Operating Your Tv

    OPERATING YOUR TV A. ZAPP FUNCTİON (OPTİONAL) D. TUNING THE TELEVISION Select the programme you would like to recall There are two ways of tuning your television: by pressing SWAP button. Selected programme • Manual, where you control the tuning process number will appear on the upper left side of the or Autoprogram where the television does it all screen.
  • Page 8 Starting with Program P1, tune in the first Enter the desired program number channel as follows: by using the Ten key program Use the Program up button to select buttons SEARCH.Press the Volume up or Use the Volume up/down buttons to Volume down button to start the select the program number.
  • Page 9 Use the Program down button to • Picture Menu select AUTOPROGRAM and press the OK button. To reach the picture menu press one time to MENU button. BRIGHTNESS Please Note: CONTRAST a) On the TV sets equipped with ATS a COLOUR COUNTRY SELECTION menu will appear.
  • Page 10 d) Language 1- Select the SLEEP TIMER in the FEATURES menu. Select the desired time by using Volume down or Volume up buttons. There are many languages available for the On 2- You can also use the YELLOW ( ) button on Screen Displays (OSD).

  • Page 11: Block Diagram

    BLOCK DIAGRAM OF E1 CHASSIS...
  • Page 12 IC DATASHEETS&SPECS TDA 9345 GENERAL DESCRIPTION The various versions of the TDA9345 and TDA9345 PS-N3 combine the functions of a video processor together with a µ-Controller, a Teletext decoder and US Closed Caption decoder. The Teletext decoder has an internal RAM memory for 1 page(TDA 9345) or 10 page(TDA 9346) text. The ICs are intended to be used in economy television receivers with picture tubes up to 100°.
  • Page 13 c) Data Capture • Automatic selection between 625 WST/VPS • Cursor • Special Graphics Characters with two planes, on line 16 of VBI • Real-time capture and decoding for WST allowing Teletext in Hardware, to enable optimized µ- four colours per character •...
  • Page 15 TDA 8357J GENERAL DESCRIPTION The TDA8357J is a power circuit for use in 90° and 110° colour deflection systems for 25 to 200 Hz field frequencies, and for 4 : 3 and 16 : 9 picture tubes. The IC contains a vertical deflection output circuit, operating as a high efficiency class G system.
  • Page 16 HEF 4053B DESCRIPTION The HEF4053B is a triple 2-channel analogue multiplexer/demulti plexer with a common enable input (E). Each multiplexer/demultiplexer has two independent inputs/outputs (Y0 and Y1), a common input/output (Z), and select inputs (Sn). Each also contains two-bidirectional analogue switches, each with one side connected to an independent input/output (Y0 and Y1) and the other side connected to a common input/output (Z).
  • Page 17 TDA 9830 TV sound AM-demodulator and audio source switch SYMBOL DESCRIPTION IFIN sound IF differential input signal n.c. not connected CAGC AGC capacitor CREF REF voltage filtering capacitor n.c. not connected AMOUT AM demodulator output AMIN input signal (from AM) to audio switch AFOUT output signal from audio switch EXTIN...

  • Page 18: Pin Voltages Of Ic's

    PIN VOLTAGES OF IC’s IC101(TDA 9345) TV signal processor-Teletext decoder with embedded Controller SYMBOL DESCRIPTION V DC(*) PIN SYMBOL DESCRIPTION V DC(*) P1.3/T1 port 1.3 or Counter/Timer 1 input 2,46(2,4) HOUT horizontal output 0,88(3,12) P1.6/SCL port 1.6 or I2C-bus clock line 4,88(0) FBISO flyback input/sandcastle output...

  • Page 19: Oscillosgraphs Of Some Ic Pins

    OSCILLOSGRAPHS OF SOME IC PINS Note : A pattern Generator is connected to the TV (Colour Bar, sound 1 kHZ) TDA 9345-IC 101 Pin 22 VDRA Vertical Drive Output A, 15625 kHz Pin 21 VDRB Vertical Drive Output B, 15625 kHz Pin 34 FBISO Flyback Input/Sandcastle Output, 15625 kHz Pin 33 HOUT Horizontal Output, 15625 kHz...
  • Page 20 Pin 39 VP1 main supply voltage TV processor, 15625 kHz Pin 40 CVBS1 internal CVBS input, 15625 kHz Pin 50 BLKIN Black current input / V-guard input,15625 kHz Pin 44 AUDOUT Audio Output, 15625 kHz Pin 51 Ro Red Output, 15625 kHz Pin 52 Go Green Output, 15625 kHz...
  • Page 21 Pin 53 Bo Blue Output, 15625 kHz Pin 58 XTALIN crystal oscillator input, 15625 kHz Pin 59 XTALOUT crystal oscillator Output, 15625 kHz TDA 2822-IC 301 Pin 6 Output 1, 15625 kHz Pin 1 Input 1(+), 15625 kHz...

  • Page 22: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1.1 Supply Voltage Adjustment Connect a digital voltmeter to the cathode of diode D609 at the AV mode of the TV and set the screen voltage to the minimum with the screen potentiometer. Adjust the main supply voltage (B+) with P601 potentiometer to the following value (after supply adjustment, readjust Screen and focus voltage).
  • Page 23 • Set the value of “BLACK LEVEL G” and “WHITE POINT B” to “30” and “32” with V+ / V- buttons. • Adjust “WHITE POINT R” and “WHITE POINT G” for red and green drives • If white balance can not be adjusted properly slightly change the values of “BLACK LEVEL G” and “WHITE POINT B”.
  • Page 24 2.7 Factory Settings for Service Mode Values given in Table 1 are typical values and can vary according to the CRT type. 21" 14" 15" 20" AGC(UHF) Automatic Gain Control 1(UHF) AGC(VHF) Automatic Gain Control 2(VHF) Automatic Gain Control for AGC(LPRIME) SECAM LL’...

  • Page 25: Channel Frequency Tables

    CHANNEL FREQUENCY TABLE...
  • Page 27 POSITION NO DECRIPTION PART NO NOTES C0001-C0002 C-PEM 220NF J 100V R:5 274230 C0003 CC 220PF K 50V NPO R:5 201222 C0004 CC 220PF K 50V NPO R:5 201222 C-ELA 47UF M 6.3V 11*5 R:5 251487 C02-C03 CC-CHIP 100PF J 50V /1206 NPO 291101 C101-C104 CC-CHIP 10NF K 50V /0603 X7R...
  • Page 28 POSITION NO DECRIPTION PART NO NOTES C217 CC-CHIP 10NF K 50V /0603 X7R 293113 C218 EC 4.7UF 50V 11*5 R:5 250479 C219 CC-CHIP 100NF K 16V /0603 X7R 294118 C220 EC 10UF 63V 11*5 R:5 251116 C301 CC-CHIP 10NF K 50V /0603 X7R 293113 C302 CC-CHIP 2.2NF K 50V/0603 X7R...
  • Page 29 POSITION NO DECRIPTION PART NO NOTES C704-C706 CC-CHIP 390PF J 50V /0603 NPO TAPE 291393 C707 EC 10UF 250V 16*10 R:5 251109 C708-C710 CC-CHIP 470PF J 50V /0603 NP0 T&R 291476 C711 C-CE 2.2NF K 2KV Y5P R:7.5 202221 C712 C-PEM 100NF J 250V R:10 274105 LED IR SIR563SB3F 23/940...
  • Page 30 POSITION NO DECRIPTION PART NO NOTES R108 RC-CHIP 3.3K J 1/16W /0603 172336 R109 RC-CHIP 2.2K J 1/16W/0603 TAPE 172224 R110 RC-CHIP 1.5K J 1/16W /0603 TAPE 172154 R111 RC-CHIP 0R /0805 2*1.25 179001 R112 RC-CHIP 0R /0603 1.6*0.8 TAPE 179005 R113 CFR 3.3K J 1/4W /6 52MM...
  • Page 31 POSITION NO DECRIPTION PART NO NOTES R215-R216 RC-CHIP 180R J 1/16W /0603 171184 R217-R222 RC-CHIP 1K J 1/16W /0603 172104 R224 RC-CHIP 3.9K J 1/16W/0603 TAPE 172393 R225 JUMPER WIRE D=.6 500700-KD R226 RC-CHIP 5.6K J 1/16W /0603 TAPE 172567 R228 RC-CHIP 68K J 1/16W /0603 173685...
  • Page 32 POSITION NO DECRIPTION PART NO NOTES R615 RC-CHIP 0R /0603 1.6*0.8 TAPE 179005 R616 RM 1M J 1W 52MM 115103 R617 RM 3.9M J 1W 52MM 115391 R618 RC-CHIP 39K J 1/16W /0603 TAPE 173394 R619 CFR 15K J 1/4W 52MM 103155 R621 CFR 47R J 1/4W /6 52MM...
  • Page 33 POSITION NO DECRIPTION PART NO NOTES ZD503 DIODE Z.TZMC5V6-5.6V SOD80C 303864 ZD601 DIODE Z. BZX55C33 52MM 302318 ZD701 DIODE Z. C8V2 26MM 302294 CPT VC A51EFS13X191 056321-VC6 DEGAUSSING COIL HOLDER FASON 871273 DEGAUSSING COIL HOLDER A99273 DEGAUSSING COIL ASSY 21" BAND 621167-AS FLUX RF 800NO CLEAN 60163...
  • Page 34 CRT BOARD 155V_crt tp98 tp100 R195 X101 100R SDA1 100R X702 CRT SOKET C707 SCL1 tp111 10u/250V 1N 007 KEYB 155V_crt R703 SERVICE n.c. R723 BLUE T701 D703 220R 2SC2 82 1N 1 8 tp92 R715 tp108 2.7k tp101 R720 R132 R705 C705...

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